Merge branch 'feature/backend' into develop

.dockerignore

@@ -1,2 +1,4 @@
-/node_modules
+/client/node_modules
 /build
+/data
+/server/vendor

.gitignore

@@ -1,4 +1,8 @@
-node_modules
+/client/node_modules
-/dist
+/client/dist
-/*.log
+*.log
 /.vscode
+/server/bin
+/server/data
+/server/vendor
+/release

Dockerfile

@@ -1,23 +1,37 @@
-FROM alpine:3.11 AS build
+FROM golang:1.13 AS build
 
-RUN apk add --no-cache nodejs npm git make
+ARG HTTP_PROXY=
+ARG HTTPS_PROXY=
+ARG http_proxy=
+ARG https_proxy=
+
+RUN apt-get update && apt-get install -y build-essential git bash curl
+
+RUN curl -sL https://deb.nodesource.com/setup_12.x | bash - \
+    && apt-get install -y nodejs
 
 COPY . /src
+
 WORKDIR /src
 
-RUN npm install && make build
+RUN ( cd client && npm install ) \
+    && ( cd server && go mod vendor ) \
+    && make ARCH_TARGETS=amd64 release
 
-FROM alpine:3.11
+FROM busybox
 
-COPY --from=build /src/dist /app
+COPY --from=build /src/release/server-linux-amd64 /app
 
 WORKDIR /app
 
-RUN apk add --no-cache caddy
+COPY misc/dokku/CHECKS /client/CHECKS
-
-COPY misc/dokku/Caddyfile /app/Caddyfile
-COPY misc/dokku/CHECKS /app/CHECKS
 
 EXPOSE 80
 
-CMD ["caddy"]
+VOLUME /data
+
+ENV GUESSTIMATE_HTTP_ADDRESS=:80
+ENV GUESSTIMATE_HTTP_PUBLIC_DIR=/app/public
+ENV GUESSTIMATE_DATA_PATH=/data/guesstimate.db
+
+CMD ["/app/bin/server", "-config", "config.yml"]

LICENCE

@@ -0,0 +1,661 @@
+                    GNU AFFERO GENERAL PUBLIC LICENSE
+                       Version 3, 19 November 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
+  The GNU Affero General Public License is a free, copyleft license for
+software and other kinds of works, specifically designed to ensure
+cooperation with the community in the case of network server software.
+
+  The licenses for most software and other practical works are designed
+to take away your freedom to share and change the works.  By contrast,
+our General Public Licenses are intended to guarantee your freedom to
+share and change all versions of a program--to make sure it remains free
+software for all its users.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
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+
+  Developers that use our General Public Licenses protect your rights
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+
+  The Free Software Foundation may publish revised and/or new versions of
+the GNU Affero General Public License from time to time.  Such new versions
+will be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+  Each version is given a distinguishing version number.  If the
+Program specifies that a certain numbered version of the GNU Affero General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation.  If the Program does not specify a version number of the
+GNU Affero General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+  If the Program specifies that a proxy can decide which future
+versions of the GNU Affero General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If your software can interact with users remotely through a computer
+network, you should also make sure that it provides a way for users to
+get its source.  For example, if your program is a web application, its
+interface could display a "Source" link that leads users to an archive
+of the code.  There are many ways you could offer source, and different
+solutions will be better for different programs; see section 13 for the
+specific requirements.
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU AGPL, see
+<https://www.gnu.org/licenses/>.

Makefile

@@ -1,13 +1,21 @@
 DOKKU_URL := dokku@dev.lookingfora.name:guesstimate
 
 watch:
-	npm run dev
+	modd
 
-build: clean
+install-deps:
-	npm run build
+	cd client && npm install
+
+build: clean build-server build-client
+
+build-client:
+	cd client && npm run build
+
+build-server:
+	cd server && CGO_ENABLED=0 go build -mod=vendor -v -o bin/server ./cmd/server
 
 clean:
-	rm -rf dist
+	rm -rf client/dist server/bin release
 
 dokku-build:
 	docker build \
@@ -20,3 +28,7 @@ dokku-run:
 dokku-deploy:
 	$(if $(shell git config remote.dokku.url),, git remote add dokku $(DOKKU_URL))
 	git push -f dokku $(shell git rev-parse HEAD):refs/heads/master
+
+.PHONY: release
+release: clean
+	@misc/script/release.sh

client/package-lock.json

@@ -82,6 +82,11 @@
       "integrity": "sha512-q95SP4FdkmF0CwO0F2q0H6ZgudsApaY/yCtAQNRn1gduef5fGpyEphzy0YCq/N0UFvDSnLg5V8jFK/YGXlDiCw==",
       "dev": true
     },
+    "@types/json-merge-patch": {
+      "version": "0.0.4",
+      "resolved": "https://registry.npmjs.org/@types/json-merge-patch/-/json-merge-patch-0.0.4.tgz",
+      "integrity": "sha1-pSgtqWkKgSpiEoo0cIr0dqMI2UE="
+    },
     "@types/minimatch": {
       "version": "3.0.3",
       "resolved": "https://registry.npmjs.org/@types/minimatch/-/minimatch-3.0.3.tgz",
@@ -1729,7 +1734,6 @@
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/deep-equal/-/deep-equal-1.1.1.tgz",
       "integrity": "sha512-yd9c5AdiqVcR+JjcwUQb9DkhJc8ngNr0MahEBGvDiJw8puWab2yZlh+nkasOnZP+EGTAP6rRp2JzJhJZzvNF8g==",
-      "dev": true,
       "requires": {
         "is-arguments": "^1.0.4",
         "is-date-object": "^1.0.1",
@@ -1753,7 +1757,6 @@
       "version": "1.1.3",
       "resolved": "https://registry.npmjs.org/define-properties/-/define-properties-1.1.3.tgz",
       "integrity": "sha512-3MqfYKj2lLzdMSf8ZIZE/V+Zuy+BgD6f164e8K2w7dgnpKArBDerGYpM46IYYcjnkdPNMjPk9A6VFB8+3SKlXQ==",
-      "dev": true,
       "requires": {
         "object-keys": "^1.0.12"
       }
@@ -2041,7 +2044,6 @@
       "version": "1.17.5",
       "resolved": "https://registry.npmjs.org/es-abstract/-/es-abstract-1.17.5.tgz",
       "integrity": "sha512-BR9auzDbySxOcfog0tLECW8l28eRGpDpU3Dm3Hp4q/N+VtLTmyj4EUN088XZWQDW/hzj6sYRDXeOFsaAODKvpg==",
-      "dev": true,
       "requires": {
         "es-to-primitive": "^1.2.1",
         "function-bind": "^1.1.1",
@@ -2060,7 +2062,6 @@
       "version": "1.2.1",
       "resolved": "https://registry.npmjs.org/es-to-primitive/-/es-to-primitive-1.2.1.tgz",
       "integrity": "sha512-QCOllgZJtaUo9miYBcLChTUaHNjJF3PYs1VidD7AwiEj1kYxKeQTctLAezAOH5ZKRH0g2IgPn6KwB4IT8iRpvA==",
-      "dev": true,
       "requires": {
         "is-callable": "^1.1.4",
         "is-date-object": "^1.0.1",
@@ -3351,8 +3352,7 @@
     "function-bind": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/function-bind/-/function-bind-1.1.1.tgz",
-      "integrity": "sha512-yIovAzMX49sF8Yl58fSCWJ5svSLuaibPxXQJFLmBObTuCr0Mf1KiPopGM9NiFjiYBCbfaa2Fh6breQ6ANVTI0A==",
+      "integrity": "sha512-yIovAzMX49sF8Yl58fSCWJ5svSLuaibPxXQJFLmBObTuCr0Mf1KiPopGM9NiFjiYBCbfaa2Fh6breQ6ANVTI0A=="
-      "dev": true
     },
     "get-caller-file": {
       "version": "1.0.3",
@@ -3482,7 +3482,6 @@
       "version": "1.0.3",
       "resolved": "https://registry.npmjs.org/has/-/has-1.0.3.tgz",
       "integrity": "sha512-f2dvO0VU6Oej7RkWJGrehjbzMAjFp5/VKPp5tTpWIV4JHHZK1/BxbFRtf/siA2SWTe09caDmVtYYzWEIbBS4zw==",
-      "dev": true,
       "requires": {
         "function-bind": "^1.1.1"
       }
@@ -3505,8 +3504,7 @@
     "has-symbols": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/has-symbols/-/has-symbols-1.0.1.tgz",
-      "integrity": "sha512-PLcsoqu++dmEIZB+6totNFKq/7Do+Z0u4oT0zKOJNl3lYK6vGwwu2hjHs+68OEZbTjiUE9bgOABXbP/GvrS0Kg==",
+      "integrity": "sha512-PLcsoqu++dmEIZB+6totNFKq/7Do+Z0u4oT0zKOJNl3lYK6vGwwu2hjHs+68OEZbTjiUE9bgOABXbP/GvrS0Kg=="
-      "dev": true
     },
     "has-value": {
       "version": "1.0.0",
@@ -4013,8 +4011,7 @@
     "is-arguments": {
       "version": "1.0.4",
       "resolved": "https://registry.npmjs.org/is-arguments/-/is-arguments-1.0.4.tgz",
-      "integrity": "sha512-xPh0Rmt8NE65sNzvyUmWgI1tz3mKq74lGA0mL8LYZcoIzKOzDh6HmrYm3d18k60nHerC8A9Km8kYu87zfSFnLA==",
+      "integrity": "sha512-xPh0Rmt8NE65sNzvyUmWgI1tz3mKq74lGA0mL8LYZcoIzKOzDh6HmrYm3d18k60nHerC8A9Km8kYu87zfSFnLA=="
-      "dev": true
     },
     "is-binary-path": {
       "version": "1.0.1",
@@ -4034,8 +4031,7 @@
     "is-callable": {
       "version": "1.1.5",
       "resolved": "https://registry.npmjs.org/is-callable/-/is-callable-1.1.5.tgz",
-      "integrity": "sha512-ESKv5sMCJB2jnHTWZ3O5itG+O128Hsus4K4Qh1h2/cgn2vbgnLSVqfV46AeJA9D5EeeLa9w81KUXMtn34zhX+Q==",
+      "integrity": "sha512-ESKv5sMCJB2jnHTWZ3O5itG+O128Hsus4K4Qh1h2/cgn2vbgnLSVqfV46AeJA9D5EeeLa9w81KUXMtn34zhX+Q=="
-      "dev": true
     },
     "is-data-descriptor": {
       "version": "0.1.4",
@@ -4060,8 +4056,7 @@
     "is-date-object": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/is-date-object/-/is-date-object-1.0.2.tgz",
-      "integrity": "sha512-USlDT524woQ08aoZFzh3/Z6ch9Y/EWXEHQ/AaRN0SkKq4t2Jw2R2339tSXmwuVoY7LLlBCbOIlx2myP/L5zk0g==",
+      "integrity": "sha512-USlDT524woQ08aoZFzh3/Z6ch9Y/EWXEHQ/AaRN0SkKq4t2Jw2R2339tSXmwuVoY7LLlBCbOIlx2myP/L5zk0g=="
-      "dev": true
     },
     "is-descriptor": {
       "version": "0.1.6",
@@ -4158,7 +4153,6 @@
       "version": "1.0.5",
       "resolved": "https://registry.npmjs.org/is-regex/-/is-regex-1.0.5.tgz",
       "integrity": "sha512-vlKW17SNq44owv5AQR3Cq0bQPEb8+kF3UKZ2fiZNOWtztYE5i0CzCZxFDwO58qAOWtxdBRVO/V5Qin1wjCqFYQ==",
-      "dev": true,
       "requires": {
         "has": "^1.0.3"
       }
@@ -4173,7 +4167,6 @@
       "version": "1.0.3",
       "resolved": "https://registry.npmjs.org/is-symbol/-/is-symbol-1.0.3.tgz",
       "integrity": "sha512-OwijhaRSgqvhm/0ZdAcXNZt9lYdKFpcRDT5ULUuYXPoT794UNOdU+gpT6Rzo7b4V2HUl/op6GqY894AZwv9faQ==",
-      "dev": true,
       "requires": {
         "has-symbols": "^1.0.1"
       }
@@ -4214,6 +4207,14 @@
       "integrity": "sha1-mGbfOVECEw449/mWvOtlRDIJwls=",
       "dev": true
     },
+    "json-merge-patch": {
+      "version": "0.2.3",
+      "resolved": "https://registry.npmjs.org/json-merge-patch/-/json-merge-patch-0.2.3.tgz",
+      "integrity": "sha1-+ixrWvh9p3uuKWalidUuI+2B/kA=",
+      "requires": {
+        "deep-equal": "^1.0.0"
+      }
+    },
     "json-parse-better-errors": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/json-parse-better-errors/-/json-parse-better-errors-1.0.2.tgz",
@@ -4772,14 +4773,12 @@
     "object-inspect": {
       "version": "1.7.0",
       "resolved": "https://registry.npmjs.org/object-inspect/-/object-inspect-1.7.0.tgz",
-      "integrity": "sha512-a7pEHdh1xKIAgTySUGgLMx/xwDZskN1Ud6egYYN3EdRW4ZMPNEDUTF+hwy2LUC+Bl+SyLXANnwz/jyh/qutKUw==",
+      "integrity": "sha512-a7pEHdh1xKIAgTySUGgLMx/xwDZskN1Ud6egYYN3EdRW4ZMPNEDUTF+hwy2LUC+Bl+SyLXANnwz/jyh/qutKUw=="
-      "dev": true
     },
     "object-is": {
       "version": "1.1.2",
       "resolved": "https://registry.npmjs.org/object-is/-/object-is-1.1.2.tgz",
       "integrity": "sha512-5lHCz+0uufF6wZ7CRFWJN3hp8Jqblpgve06U5CMQ3f//6iDjPr2PEo9MWCjEssDsa+UZEL4PkFpr+BMop6aKzQ==",
-      "dev": true,
       "requires": {
         "define-properties": "^1.1.3",
         "es-abstract": "^1.17.5"
@@ -4788,8 +4787,7 @@
     "object-keys": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/object-keys/-/object-keys-1.1.1.tgz",
-      "integrity": "sha512-NuAESUOUMrlIXOfHKzD6bpPu3tYt3xvjNdRIQ+FeT0lNb4K8WR70CaDxhuNguS2XG+GjkyMwOzsN5ZktImfhLA==",
+      "integrity": "sha512-NuAESUOUMrlIXOfHKzD6bpPu3tYt3xvjNdRIQ+FeT0lNb4K8WR70CaDxhuNguS2XG+GjkyMwOzsN5ZktImfhLA=="
-      "dev": true
     },
     "object-path": {
       "version": "0.11.4",
@@ -4810,7 +4808,6 @@
       "version": "4.1.0",
       "resolved": "https://registry.npmjs.org/object.assign/-/object.assign-4.1.0.tgz",
       "integrity": "sha512-exHJeq6kBKj58mqGyTQ9DFvrZC/eR6OwxzoM9YRoGBqrXYonaFyGiFMuc9VZrXf7DarreEwMpurG3dd+CNyW5w==",
-      "dev": true,
       "requires": {
         "define-properties": "^1.1.2",
         "function-bind": "^1.1.1",
@@ -5609,7 +5606,6 @@
       "version": "1.3.0",
       "resolved": "https://registry.npmjs.org/regexp.prototype.flags/-/regexp.prototype.flags-1.3.0.tgz",
       "integrity": "sha512-2+Q0C5g951OlYlJz6yu5/M33IcsESLlLfsyIaLJaG4FA2r4yP8MvVMJUUP/fVBkSpbbbZlS5gynbEWLipiiXiQ==",
-      "dev": true,
       "requires": {
         "define-properties": "^1.1.3",
         "es-abstract": "^1.17.0-next.1"
@@ -6461,7 +6457,6 @@
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/string.prototype.trimend/-/string.prototype.trimend-1.0.1.tgz",
       "integrity": "sha512-LRPxFUaTtpqYsTeNKaFOw3R4bxIzWOnbQ837QfBylo8jIxtcbK/A/sMV7Q+OAV/vWo+7s25pOE10KYSjaSO06g==",
-      "dev": true,
       "requires": {
         "define-properties": "^1.1.3",
         "es-abstract": "^1.17.5"
@@ -6471,7 +6466,6 @@
       "version": "2.1.2",
       "resolved": "https://registry.npmjs.org/string.prototype.trimleft/-/string.prototype.trimleft-2.1.2.tgz",
       "integrity": "sha512-gCA0tza1JBvqr3bfAIFJGqfdRTyPae82+KTnm3coDXkZN9wnuW3HjGgN386D7hfv5CHQYCI022/rJPVlqXyHSw==",
-      "dev": true,
       "requires": {
         "define-properties": "^1.1.3",
         "es-abstract": "^1.17.5",
@@ -6482,7 +6476,6 @@
       "version": "2.1.2",
       "resolved": "https://registry.npmjs.org/string.prototype.trimright/-/string.prototype.trimright-2.1.2.tgz",
       "integrity": "sha512-ZNRQ7sY3KroTaYjRS6EbNiiHrOkjihL9aQE/8gfQ4DtAC/aEBRHFJa44OmoWxGGqXuJlfKkZW4WcXErGr+9ZFg==",
-      "dev": true,
       "requires": {
         "define-properties": "^1.1.3",
         "es-abstract": "^1.17.5",
@@ -6493,7 +6486,6 @@
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/string.prototype.trimstart/-/string.prototype.trimstart-1.0.1.tgz",
       "integrity": "sha512-XxZn+QpvrBI1FOcg6dIpxUPgWCPuNXvMD72aaRaUQv1eD4e/Qy8i/hFTe0BUmD60p/QA6bh1avmuPTfNjqVWRw==",
-      "dev": true,
       "requires": {
         "define-properties": "^1.1.3",
         "es-abstract": "^1.17.5"

client/package.json

@@ -5,9 +5,11 @@
   "main": "src/index.js",
   "dependencies": {
     "@types/bs58": "^4.0.1",
+    "@types/json-merge-patch": "0.0.4",
     "bs58": "^4.0.1",
     "bulma": "^0.8.2",
     "bulma-switch": "^2.0.0",
+    "json-merge-patch": "^0.2.3",
     "preact": "^10.4.1",
     "preact-markup": "^1.6.0",
     "preact-render-to-string": "^5.1.6",

client/src/components/editable-text/index.tsx

@@ -15,9 +15,14 @@ const EditableText: FunctionalComponent<EditableTextProps> = ({ onChange, value,
     const [ editMode, setEditMode ] = useState(false);
 
     useEffect(() => {
+      if (internalValue === value) return;
       if (onChange) onChange(internalValue);
     }, [internalValue]);
 
+    useEffect(() => {
+      setInternalValue(value);
+    }, [value])
+    
     const onEditIconClick = () => {
         setEditMode(true);
     };

client/src/hooks/use-debounce.tsx

@@ -0,0 +1,19 @@
+import { useMemo, useState } from "preact/hooks";
+
+export default function useDebounce(func: Function, delay: number) {
+  const [id, setId] = useState<number|null>(null)
+  return useMemo(
+    (...args) => {
+      if (id) {
+        clearTimeout(id)
+      } else {
+        setId(
+          window.setTimeout(() => {
+            setId(null)
+            func(...args)
+          }, delay)
+        )
+      }
+    }, [func]
+  )
+}

client/src/hooks/use-previous.ts

@@ -0,0 +1,11 @@
+import { useEffect, useRef } from "preact/hooks";
+
+export function usePrevious<T>(value: T): T|undefined {
+  const ref = useRef();
+
+  useEffect(() => {
+    ref.current = value;
+  }, [value]);
+  
+  return ref.current as T|undefined;
+}

client/src/hooks/use-project-estimations.ts

@@ -0,0 +1,35 @@
+import { Project } from "../models/project";
+import { useState, useEffect } from "preact/hooks";
+import { getProjectWeightedMean, getProjectStandardDeviation } from "../util/stat";
+
+export interface Estimation {
+  e: number
+  sd: number
+}
+
+export interface ProjetEstimations {
+  p99: Estimation
+  p90: Estimation
+  p68: Estimation
+}
+
+export function useProjectEstimations(p :Project): ProjetEstimations {
+  const [ estimations, setEstimations ] = useState({
+    p99: { e: 0, sd: 0 },
+    p90: { e: 0, sd: 0 },
+    p68: { e: 0, sd: 0 },
+  });
+  
+  useEffect(() => {
+    const projectWeightedMean = getProjectWeightedMean(p)
+    const projectStandardDeviation = getProjectStandardDeviation(p);
+    
+    setEstimations({
+      p99: { e: projectWeightedMean, sd: (projectStandardDeviation * 3) },
+      p90: { e: projectWeightedMean, sd: (projectStandardDeviation * 1.645) },
+      p68: { e: projectWeightedMean, sd: (projectStandardDeviation) },
+    })
+  }, [p.tasks]);
+  
+  return estimations;
+}

client/src/hooks/use-project-reducer.ts

@@ -0,0 +1,325 @@
+import { Project } from "../models/project";
+import { Task, TaskID, EstimationConfidence, TaskCategoryID, TaskCategory } from "../models/task";
+import { useReducer } from "preact/hooks";
+import { generate as diff } from "json-merge-patch";
+import { applyPatch } from "../util/patch";
+
+
+export interface Action {
+  type: string
+}
+
+export type ProjectReducerActions =
+AddTask |
+RemoveTask |
+UpdateTaskEstimation |
+UpdateProjectLabel |
+UpdateTaskLabel |
+UpdateParam |
+UpdateTaskCategoryLabel |
+UpdateTaskCategoryCost |
+AddTaskCategory |
+RemoveTaskCategory |
+PatchProject
+
+export function useProjectReducer(project: Project) {
+  return useReducer(projectReducer, project);
+}
+
+export function projectReducer(project: Project, action: ProjectReducerActions): Project {
+  console.log(action);
+  switch(action.type) {
+    case ADD_TASK:
+    return handleAddTask(project, action as AddTask);
+    
+    case REMOVE_TASK:
+    return handleRemoveTask(project, action as RemoveTask);
+    
+    case UPDATE_TASK_ESTIMATION:
+    return handleUpdateTaskEstimation(project, action as UpdateTaskEstimation);
+    
+    case UPDATE_PROJECT_LABEL:
+    return handleUpdateProjectLabel(project, action as UpdateProjectLabel);
+    
+    case UPDATE_TASK_LABEL:
+    return handleUpdateTaskLabel(project, action as UpdateTaskLabel);
+    
+    case UPDATE_PARAM:
+    return handleUpdateParam(project, action as UpdateParam);
+    
+    case ADD_TASK_CATEGORY:
+    return handleAddTaskCategory(project, action as AddTaskCategory);
+    
+    case REMOVE_TASK_CATEGORY:
+    return handleRemoveTaskCategory(project, action as RemoveTaskCategory);
+    
+    case UPDATE_TASK_CATEGORY_LABEL:
+    return handleUpdateTaskCategoryLabel(project, action as UpdateTaskCategoryLabel);
+    
+    case UPDATE_TASK_CATEGORY_COST:
+    return handleUpdateTaskCategoryCost(project, action as UpdateTaskCategoryCost);
+    
+    case PATCH_PROJECT:
+    return handlePatchProject(project, action as PatchProject);
+  }
+  
+  return project;
+}
+
+export interface AddTask extends Action {
+  task: Task
+}
+
+export const ADD_TASK = "ADD_TASK";
+
+export function addTask(task: Task): AddTask {
+  return { type: ADD_TASK, task };
+}
+
+export function handleAddTask(project: Project, action: AddTask): Project {
+  const task = { ...action.task };
+  return {
+    ...project,
+    tasks: {
+      ...project.tasks,
+      [task.id]: task,
+    }
+  };
+}
+
+export interface RemoveTask extends Action {
+  id: TaskID
+}
+
+export const REMOVE_TASK = "REMOVE_TASK";
+
+export function removeTask(id: TaskID): RemoveTask {
+  return { type: REMOVE_TASK, id };
+}
+
+export function handleRemoveTask(project: Project, action: RemoveTask): Project {
+  const tasks = { ...project.tasks };
+  delete tasks[action.id];
+  return {
+    ...project,
+    tasks
+  };
+}
+
+export interface UpdateTaskEstimation extends Action {
+  id: TaskID
+  confidence: string
+  value: number
+}
+
+export const UPDATE_TASK_ESTIMATION = "UPDATE_TASK_ESTIMATION";
+
+export function updateTaskEstimation(id: TaskID, confidence: EstimationConfidence, value: number): UpdateTaskEstimation {
+  return { type: UPDATE_TASK_ESTIMATION, id, confidence, value };
+}
+
+export function handleUpdateTaskEstimation(project: Project, action: UpdateTaskEstimation): Project {
+  const estimations = {
+    ...project.tasks[action.id].estimations,
+    [action.confidence]: action.value
+  };
+  
+  if (estimations.likely < estimations.optimistic) {
+    estimations.likely = estimations.optimistic;
+  }
+  
+  if (estimations.pessimistic < estimations.likely) {
+    estimations.pessimistic = estimations.likely;
+  }
+  
+  return {
+    ...project,
+    tasks: {
+      ...project.tasks,
+      [action.id]: {
+        ...project.tasks[action.id],
+        estimations: estimations,
+      }
+    }
+  };
+}
+
+
+export interface UpdateProjectLabel extends Action {
+  label: string
+}
+
+export const UPDATE_PROJECT_LABEL = "UPDATE_PROJECT_LABEL";
+
+export function updateProjectLabel(label: string): UpdateProjectLabel {
+  return { type: UPDATE_PROJECT_LABEL, label };
+}
+
+export function handleUpdateProjectLabel(project: Project, action: UpdateProjectLabel): Project {
+  return {
+    ...project,
+    label: action.label
+  };
+}
+
+export interface UpdateTaskLabel extends Action {
+  id: TaskID
+  label: string
+}
+
+export const UPDATE_TASK_LABEL = "UPDATE_TASK_LABEL";
+
+export function updateTaskLabel(id: TaskID, label: string): UpdateTaskLabel {
+  return { type: UPDATE_TASK_LABEL, id, label };
+}
+
+export function handleUpdateTaskLabel(project: Project, action: UpdateTaskLabel): Project {
+  return {
+    ...project,
+    tasks: {
+      ...project.tasks,
+      [action.id]: {
+        ...project.tasks[action.id],
+        label: action.label,
+      }
+    }
+  };
+}
+
+export interface UpdateParam extends Action {
+  name: string
+  value: any
+}
+
+export const UPDATE_PARAM = "UPDATE_PARAM";
+
+export function updateParam(name: string, value: any): UpdateParam {
+  return { type: UPDATE_PARAM, name, value };
+}
+
+export function handleUpdateParam(project: Project, action: UpdateParam): Project {
+  return {
+    ...project,
+    params: {
+      ...project.params,
+      [action.name]: action.value,
+    }
+  };
+}
+
+export interface UpdateTaskCategoryLabel extends Action {
+  categoryId: TaskCategoryID
+  label: string
+}
+
+export const UPDATE_TASK_CATEGORY_LABEL = "UPDATE_TASK_CATEGORY_LABEL";
+
+export function updateTaskCategoryLabel(categoryId: TaskCategoryID, label: string): UpdateTaskCategoryLabel {
+  return { type: UPDATE_TASK_CATEGORY_LABEL, categoryId, label };
+}
+
+export function handleUpdateTaskCategoryLabel(project: Project, action: UpdateTaskCategoryLabel): Project {
+  return {
+    ...project,
+    params: {
+      ...project.params,
+      taskCategories: {
+        ...project.params.taskCategories,
+        [action.categoryId]: {
+          ...project.params.taskCategories[action.categoryId],
+          label: action.label
+        },
+      }
+    }
+  };
+}
+
+export interface UpdateTaskCategoryCost extends Action {
+  categoryId: TaskCategoryID
+  costPerTimeUnit: number
+}
+
+export const UPDATE_TASK_CATEGORY_COST = "UPDATE_TASK_CATEGORY_COST";
+
+export function updateTaskCategoryCost(categoryId: TaskCategoryID, costPerTimeUnit: number): UpdateTaskCategoryCost {
+  return { type: UPDATE_TASK_CATEGORY_COST, categoryId, costPerTimeUnit };
+}
+
+export function handleUpdateTaskCategoryCost(project: Project, action: UpdateTaskCategoryCost): Project {
+  return {
+    ...project,
+    params: {
+      ...project.params,
+      taskCategories: {
+        ...project.params.taskCategories,
+        [action.categoryId]: {
+          ...project.params.taskCategories[action.categoryId],
+          costPerTimeUnit: action.costPerTimeUnit
+        },
+      }
+    }
+  };
+}
+
+export const ADD_TASK_CATEGORY = "ADD_TASK_CATEGORY";
+
+export interface AddTaskCategory extends Action {
+  taskCategory: TaskCategory
+}
+
+export function addTaskCategory(taskCategory: TaskCategory): AddTaskCategory {
+  return { type: ADD_TASK_CATEGORY, taskCategory };
+}
+
+export function handleAddTaskCategory(project: Project, action: AddTaskCategory): Project {
+  const taskCategory = { ...action.taskCategory };
+  return {
+    ...project,
+    params: {
+      ...project.params,
+      taskCategories: {
+        ...project.params.taskCategories,
+        [taskCategory.id]: taskCategory,
+      }
+    }
+  };
+}
+
+export interface RemoveTaskCategory extends Action {
+  taskCategoryId: TaskCategoryID
+}
+
+export const REMOVE_TASK_CATEGORY = "REMOVE_TASK_CATEGORY";
+
+export function removeTaskCategory(taskCategoryId: TaskCategoryID): RemoveTaskCategory {
+  return { type: REMOVE_TASK_CATEGORY, taskCategoryId };
+}
+
+export function handleRemoveTaskCategory(project: Project, action: RemoveTaskCategory): Project {
+  const taskCategories = { ...project.params.taskCategories };
+  delete taskCategories[action.taskCategoryId];
+  return {
+    ...project,
+    params: {
+      ...project.params,
+      taskCategories
+    }
+  };
+}
+
+export interface PatchProject extends Action {
+  from: Project
+}
+
+export const PATCH_PROJECT = "PATCH_PROJECT";
+
+export function patchProject(from: Project): PatchProject {
+  return { type: PATCH_PROJECT, from };
+}
+
+export function handlePatchProject(project: Project, action: PatchProject): Project {
+  const p = diff(project, action.from);
+  console.log('patch to apply', p);
+  if (!p) return project;
+  return applyPatch(project, p) as Project;
+}

client/src/hooks/use-server-sync.ts

@@ -0,0 +1,108 @@
+import { Project } from "../models/project";
+import { usePrevious } from "./use-previous";
+import { useEffect, useState } from "preact/hooks";
+import { generate as diff } from "json-merge-patch";
+import useDebounce from "./use-debounce";
+
+export interface ServerSyncOptions {
+  projectURL: string
+  refreshInterval: number
+  syncDelay: number
+}
+
+export const defaultOptions = {
+  refreshInterval: 10000,
+  projectURL: `//${window.location.host}/api/v1/projects`,
+  syncDelay: 5000,
+}
+
+export function useServerSync(project: Project, applyServerUpdate: (project: Project) => void, options: ServerSyncOptions = defaultOptions) {
+  options = Object.assign({}, defaultOptions, options);
+
+  const [ version, setVersion ] = useState(0);
+
+  const handleAPIResponse = (res: Response) => {
+    // If the project does not yet exist, create it
+    if (res.status === 404) {
+      return createProject(project, options)
+        .then(res => res.json())
+        .then(result => {
+          setVersion(result.version);
+        })
+      ;
+    }
+
+    // In case of conflict, notify of new server version
+    if (res.status === 409) {
+      return res.json().then((result: any) => {
+        applyServerUpdate(result.project);
+        setVersion(result.version);
+      });
+    }
+
+    // If the server version is not modified, do nothing
+    if (res.status === 304) {
+      return;
+    }
+    
+    return res.json().then((result: any) => {
+      applyServerUpdate(result.project);
+      setVersion(result.version);
+    });
+  };
+
+  // Force refresh periodically
+  useEffect(() => {
+    const intervalId = window.setInterval(() => {
+      refreshProject(project, version, options).then(handleAPIResponse);
+    }, options.refreshInterval);
+    return () => clearInterval(intervalId);
+  }, [version]);
+
+  useEffect(() => {
+    const timeoutId =window.setTimeout(() => {
+      console.log('executing debounced patch');
+
+      let previousProject: Project|any = usePrevious(project);
+      if (!previousProject) previousProject = {};
+
+      // Trigger patch if project has changed
+
+      const patch = diff(previousProject, project);
+
+      console.log('generated patch', patch);
+      
+      if (!patch) return;
+
+      patchProject(project, patch, version, options).then(handleAPIResponse);
+    }, options.syncDelay);
+    return () => clearTimeout(timeoutId);
+  });
+
+}
+
+function refreshProject(project: Project, version: number, options: ServerSyncOptions): Promise<Response> {
+  return fetch(`${options.projectURL}/${project.id}?version=${version}`, {
+    method: 'GET'
+  });
+}
+
+function createProject(project: Project, options: ServerSyncOptions): Promise<Response> {
+  return fetch(`${options.projectURL}/${project.id}`, {
+    method: 'POST',
+    headers: {
+      'Content-Type': 'application/json',
+    },
+    body: JSON.stringify({ project })
+  });
+}
+
+function patchProject(project: Project, patch: Object, version: number, options: ServerSyncOptions): Promise<any> {
+  return fetch(`${options.projectURL}/${project.id}`, {
+    method: 'PATCH',
+    headers: {
+      'Content-Type': 'application/json',
+    },
+    body: JSON.stringify({ version, patch })
+  });
+};

client/src/models/project.ts

@@ -0,0 +1,29 @@
+import { Task, TaskCategory, TaskID } from './task';
+import { Params, defaults } from "./params";
+import { uuidV4 } from "../util/uuid";
+
+export type ProjectID = string;
+
+export interface Project {
+  id: ProjectID
+  label: string
+  description: string
+  tasks: Tasks
+  params: Params
+}
+
+export interface Tasks {
+  [id: string]: Task
+}
+
+export function newProject(id?: string): Project {
+  return {
+    id: id ? id : uuidV4(),
+    label: "",
+    description: "",
+    tasks: {},
+    params: {
+      ...defaults
+    },
+  };
+}

client/src/routes/project/index.tsx

@@ -1,8 +1,8 @@
 import { FunctionalComponent, h } from "preact";
 import { useEffect } from "preact/hooks";
 import style from "./style.module.css";
-import { newProject } from "../../models/project";
+import { newProject, Project } from "../../models/project";
-import { useProjectReducer, updateProjectLabel } from "../../hooks/use-project-reducer";
+import { useProjectReducer, updateProjectLabel, patchProject } from "../../hooks/use-project-reducer";
 import { getProjectStorageKey } from "../../util/storage";
 import { useLocalStorage } from "../../hooks/use-local-storage";
 import EditableText from "../../components/editable-text";
@@ -10,6 +10,7 @@ import Tabs from "../../components/tabs";
 import EstimationTab from "./estimation-tab";
 import ParamsTab from "./params-tab";
 import ExportTab from "./export-tab";
+import { useServerSync } from "../../hooks/use-server-sync";
 
 export interface ProjectProps {
     projectId: string
@@ -20,6 +21,10 @@ const Project: FunctionalComponent<ProjectProps> = ({ projectId }) => {
     const [ storedProject, storeProject ] = useLocalStorage(projectStorageKey, newProject(projectId));
     const [ project, dispatch ] = useProjectReducer(storedProject);
     
+    useServerSync(project, (project: Project) => {
+      dispatch(patchProject(project));
+    });
+
     const onProjectLabelChange = (projectLabel: string) => {
         dispatch(updateProjectLabel(projectLabel));
     };

client/src/util/patch.ts

@@ -0,0 +1,45 @@
+
+// React/Redux compatible implementation of RFC 7396
+// See https://tools.ietf.org/html/rfc7396
+//
+// Pseudo algorithm:
+//
+// define MergePatch(Target, Patch):
+//   if Patch is an Object:
+//     if Target is not an Object:
+//       Target = {} # Ignore the contents and set it to an empty Object
+//     for each Name/Value pair in Patch:
+//       if Value is null:
+//         if Name exists in Target:
+//           remove the Name/Value pair from Target
+//       else:
+//         Target[Name] = MergePatch(Target[Name], Value)
+//     return Target
+//   else:
+//     return Patch
+
+export function applyPatch(target: any, patch: any): Object {
+  if (!isObject(patch)) {
+    return patch;
+  }
+
+  if (!isObject(target)) {
+    target = {};
+  }
+
+  Object.keys(patch).forEach((key: any) => {
+    const value = patch[key];
+    target = { ...target };
+    if (value === null) {
+      delete target[key];
+    } else {
+      target[key] = applyPatch(target[key], value);
+    }
+  });
+
+  return target;
+}
+
+function isObject(value: any): boolean {
+  return value === Object(value);
+}

client/webpack.config.js

@@ -23,6 +23,11 @@ module.exports = {
     port: 8080,
     historyApiFallback: true,
     hot: env.NODE_ENV === 'development',
+    proxy: {
+      '/api': {
+        target: 'http://127.0.0.1:8081',
+      }
+    }
   },
   module: {
     rules: [

misc/dokku/Caddyfile

@@ -1,6 +0,0 @@
-*:80
-gzip
-log stderr
-rewrite {
-    to {path} {path}/ /index.html
-}

misc/script/release.sh

@@ -0,0 +1,126 @@
+#!/bin/bash
+
+set -eo pipefail
+
+OS_TARGETS=( linux )
+ARCH_TARGETS=${ARCH_TARGETS:-amd64 arm 386}
+
+DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null && pwd )"
+PROJECT_DIR="$DIR/../.."
+
+function build {
+
+  local name=$1
+  local srcdir=$2
+  local os=$3
+  local arch=$4
+
+  local dirname="$name-$os-$arch"
+  local destdir="$PROJECT_DIR/release/$dirname"
+
+  rm -rf "$destdir"
+  mkdir -p "$destdir"
+
+  echo "building $dirname..."
+
+  CGO_ENABLED=0 GOOS="$os" GOARCH="$arch" go build \
+    -mod=vendor \
+    -ldflags="-s -w -X 'main.GitRef=$(current_commit_ref)' -X 'main.ProjectVersion=$(current_version)' -X 'main.BuildDate=$(current_date)'" \
+    -gcflags=-trimpath="${PWD}" \
+    -asmflags=-trimpath="${PWD}" \
+    -o "$destdir/bin/$name" \
+    "$srcdir"
+}
+
+function current_date {
+  date '+%Y-%m-%d %H:%M'
+}
+
+function current_commit_ref {
+  git log -n 1 --pretty="format:%h"
+}
+
+function current_version {
+  local latest_tag=$(git describe --abbrev=0 2>/dev/null)
+  echo ${latest_tag:-0.0.0}
+}
+
+function copy {
+
+  local name=$1
+  local os=$2
+  local arch=$3
+  local src=$4
+  local dest=$5
+
+  local dirname="$name-$os-$arch"
+  local destdir="$PROJECT_DIR/release/$dirname"
+
+  echo "copying '$src' to '$destdir/$dest'..."
+
+  mkdir -p "$(dirname $destdir/$dest)"
+
+  cp -rfL $src "$destdir/$dest"
+
+}
+
+function dump_default_conf {
+  # Generate and copy configuration file
+  local command=$1
+  local os=$2
+  local arch=$3
+  local tmp_conf=$(mktemp)
+
+  go run "$PROJECT_DIR/server/cmd/$command" -dump-config > "$tmp_conf"
+  copy "$command" $os $arch "$tmp_conf" "config.yml"
+  rm -f "$tmp_conf" "$patched_conf"
+}
+
+function compress {
+
+  local name=$1
+  local os=$2
+  local arch=$3
+
+  local dirname="$name-$os-$arch"
+  local destdir="$PROJECT_DIR/release/$dirname"
+
+  echo "compressing $dirname..."
+  tar -czf "$destdir.tar.gz" -C "$destdir/../" "$dirname"
+}
+
+function build_guesstimate_client {
+  (
+    cd client
+    npm run build
+  )
+}
+
+function release_guesstimate {
+  local os=$1
+  local arch=$2
+  
+  # Build and copy server files
+  (
+    cd server
+    build 'server' "$PROJECT_DIR/server/cmd/server" $os $arch
+    dump_default_conf 'server' $os $arch
+  )
+  
+  copy 'server' $os $arch "$PROJECT_DIR/client/dist" "public"
+  copy 'server' $os $arch "$PROJECT_DIR/README.md" "README.md"
+  compress 'server' $os $arch
+
+}
+
+function main {
+  build_guesstimate_client
+  
+  for os in ${OS_TARGETS[@]}; do
+    for arch in ${ARCH_TARGETS[@]}; do
+      release_guesstimate $os $arch
+    done
+  done
+}
+
+main

modd.conf

@@ -0,0 +1,19 @@
+server/**/*.go
+!server/**/*_test.go
+server/data/config.yml
+.env
+modd.conf {
+  prep: make build-server
+  prep: cd server && [ -e data/config.yml ] || ( mkdir -p data && bin/server -dump-config > data/config.yml )
+  prep: cd server && [ -e .env ] || ( cp .env.dist .env ) 
+  daemon: cd server &&  ( set -o allexport && source .env && set +o allexport && bin/server -config data/config.yml )
+}
+
+{
+  daemon: cd client && npm run dev
+}
+
+server/**/*.go
+server/**/*_test.go {
+  prep: cd server && go clean -testcache && go test -race -v ./...
+}

server/.env

@@ -0,0 +1 @@
+GUESSTIMATE_DATA_PATH=data/guesstimate.db

server/.env.dist

@@ -0,0 +1 @@
+GUESSTIMATE_DATA_PATH=data/guesstimate.db

server/cmd/server/container.go

@@ -0,0 +1,28 @@
+package main
+
+import (
+	"forge.cadoles.com/wpetit/guesstimate/internal/config"
+	"forge.cadoles.com/wpetit/guesstimate/internal/model"
+	"forge.cadoles.com/wpetit/guesstimate/internal/storm"
+	"gitlab.com/wpetit/goweb/service"
+	"gitlab.com/wpetit/goweb/service/build"
+)
+
+func getServiceContainer(conf *config.Config) (*service.Container, error) {
+	// Initialize and configure service container
+	ctn := service.NewContainer()
+
+	ctn.Provide(build.ServiceName, build.ServiceProvider(ProjectVersion, GitRef, BuildDate))
+
+	// Create and expose config service provider
+	ctn.Provide(config.ServiceName, config.ServiceProvider(conf))
+
+	ctn.Provide(storm.ServiceName, storm.ServiceProvider(
+		storm.WithPath(conf.Data.Path),
+		storm.WithObjects(&model.ProjectEntry{}),
+		storm.WithInit(true),
+		storm.WithReIndex(true),
+	))
+
+	return ctn, nil
+}

server/cmd/server/main.go

@@ -0,0 +1,117 @@
+package main
+
+import (
+	"net/http"
+
+	"forge.cadoles.com/wpetit/guesstimate/internal/route"
+	"github.com/go-chi/chi"
+	"github.com/go-chi/chi/middleware"
+	"gitlab.com/wpetit/goweb/middleware/container"
+
+	"flag"
+	"fmt"
+	"log"
+
+	"os"
+
+	"forge.cadoles.com/wpetit/guesstimate/internal/config"
+	"github.com/pkg/errors"
+)
+
+//nolint: gochecknoglobals
+var (
+	configFile = ""
+	workdir    = ""
+	dumpConfig = false
+	version    = false
+)
+
+// nolint: gochecknoglobals
+var (
+	GitRef         = "unknown"
+	ProjectVersion = "unknown"
+	BuildDate      = "unknown"
+)
+
+//nolint: gochecknoinits
+func init() {
+	flag.StringVar(&configFile, "config", configFile, "configuration file")
+	flag.StringVar(&workdir, "workdir", workdir, "working directory")
+	flag.BoolVar(&dumpConfig, "dump-config", dumpConfig, "dump configuration and exit")
+	flag.BoolVar(&version, "version", version, "show version and exit")
+}
+
+func main() {
+	flag.Parse()
+
+	if version {
+		fmt.Printf("%s (%s) - %s\n", ProjectVersion, GitRef, BuildDate)
+
+		os.Exit(0)
+	}
+
+	// Switch to new working directory if defined
+	if workdir != "" {
+		if err := os.Chdir(workdir); err != nil {
+			log.Fatalf("%+v", errors.Wrapf(err, "could not change working directory to '%s'", workdir))
+		}
+	}
+
+	// Load configuration file if defined, use default configuration otherwise
+	var conf *config.Config
+
+	var err error
+
+	if configFile != "" {
+		conf, err = config.NewFromFile(configFile)
+		if err != nil {
+			log.Fatalf("%+v", errors.Wrapf(err, "could not load config file '%s'", configFile))
+		}
+	} else {
+		if dumpConfig {
+			conf = config.NewDumpDefault()
+		} else {
+			conf = config.NewDefault()
+		}
+
+	}
+
+	// Dump configuration if asked
+	if dumpConfig {
+		if err := config.Dump(conf, os.Stdout); err != nil {
+			log.Fatalf("%+v", errors.Wrap(err, "could not dump config"))
+		}
+
+		os.Exit(0)
+	}
+
+	if err := config.WithEnvironment(conf); err != nil {
+		log.Fatalf("%+v", errors.Wrap(err, "could not override config with environment"))
+	}
+
+	// Create service container
+	ctn, err := getServiceContainer(conf)
+	if err != nil {
+		log.Fatalf("%+v", errors.Wrap(err, "could not create service container"))
+	}
+
+	r := chi.NewRouter()
+
+	// Define base middlewares
+	r.Use(middleware.Logger)
+	r.Use(middleware.Recoverer)
+
+	// Expose service container on router
+	r.Use(container.ServiceContainer(ctn))
+
+	// Define routes
+	if err := route.Mount(r, conf); err != nil {
+		log.Fatalf("%+v", errors.Wrap(err, "could not mount http routes"))
+	}
+
+	log.Printf("listening on '%s'", conf.HTTP.Address)
+
+	if err := http.ListenAndServe(conf.HTTP.Address, r); err != nil {
+		log.Fatalf("%+v", errors.Wrapf(err, "could not listen on '%s'", conf.HTTP.Address))
+	}
+}

server/go.mod

@@ -0,0 +1,18 @@
+module forge.cadoles.com/wpetit/guesstimate
+
+go 1.14
+
+require (
+	github.com/asdine/storm/v3 v3.1.1
+	github.com/caarlos0/env/v6 v6.2.1
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/go-chi/chi v4.1.1+incompatible
+	github.com/gorilla/websocket v1.4.2 // indirect
+	github.com/pkg/errors v0.9.1
+	gitlab.com/wpetit/goweb v0.0.0-20200418152305-76dea96a46ce
+	golang.org/x/net v0.0.0-20200324143707-d3edc9973b7e // indirect
+	gopkg.in/evanphx/json-patch.v4 v4.5.0
+	gopkg.in/yaml.v2 v2.2.8
+)
+
+// replace gitlab.com/wpetit/goweb => ../goweb

server/go.sum

@@ -0,0 +1,268 @@
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+google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
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server/internal/config/config.go

@@ -0,0 +1,79 @@
+package config
+
+import (
+	"io"
+	"io/ioutil"
+
+	"github.com/caarlos0/env/v6"
+	"github.com/pkg/errors"
+
+	"gopkg.in/yaml.v2"
+)
+
+type Config struct {
+	HTTP HTTPConfig `yaml:"http"`
+	Data DataConfig `ymal:"data"`
+}
+
+type HTTPConfig struct {
+	Address   string `yaml:"address" env:"GUESSTIMATE_HTTP_ADDRESS"`
+	PublicDir string `yaml:"publicDir" env:"GUESSTIMATE_PUBLIC_DIR"`
+}
+
+type DataConfig struct {
+	Path string `yaml:"path" env:"GUESSTIMATE_DATA_PATH"`
+}
+
+// NewFromFile retrieves the configuration from the given file
+func NewFromFile(filepath string) (*Config, error) {
+	config := NewDefault()
+
+	data, err := ioutil.ReadFile(filepath)
+	if err != nil {
+		return nil, errors.Wrapf(err, "could not read file '%s'", filepath)
+	}
+
+	if err := yaml.Unmarshal(data, config); err != nil {
+		return nil, errors.Wrapf(err, "could not unmarshal configuration")
+	}
+
+	return config, nil
+}
+
+func WithEnvironment(conf *Config) error {
+	if err := env.Parse(conf); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func NewDumpDefault() *Config {
+	config := NewDefault()
+	return config
+}
+
+func NewDefault() *Config {
+	return &Config{
+		HTTP: HTTPConfig{
+			Address:   ":8081",
+			PublicDir: "public",
+		},
+		Data: DataConfig{
+			Path: "guesstimate.db",
+		},
+	}
+}
+
+func Dump(config *Config, w io.Writer) error {
+	data, err := yaml.Marshal(config)
+	if err != nil {
+		return errors.Wrap(err, "could not dump config")
+	}
+
+	if _, err := w.Write(data); err != nil {
+		return err
+	}
+
+	return nil
+}

server/internal/config/provider.go

@@ -0,0 +1,9 @@
+package config
+
+import "gitlab.com/wpetit/goweb/service"
+
+func ServiceProvider(config *Config) service.Provider {
+	return func(ctn *service.Container) (interface{}, error) {
+		return config, nil
+	}
+}

server/internal/config/service.go

@@ -0,0 +1,33 @@
+package config
+
+import (
+	"github.com/pkg/errors"
+	"gitlab.com/wpetit/goweb/service"
+)
+
+const ServiceName service.Name = "config"
+
+// From retrieves the config service in the given container
+func From(container *service.Container) (*Config, error) {
+	service, err := container.Service(ServiceName)
+	if err != nil {
+		return nil, errors.Wrapf(err, "error while retrieving '%s' service", ServiceName)
+	}
+
+	srv, ok := service.(*Config)
+	if !ok {
+		return nil, errors.Errorf("retrieved service is not a valid '%s' service", ServiceName)
+	}
+
+	return srv, nil
+}
+
+// Must retrieves the config service in the given container or panic otherwise
+func Must(container *service.Container) *Config {
+	srv, err := From(container)
+	if err != nil {
+		panic(err)
+	}
+
+	return srv
+}

server/internal/model/project.go

@@ -0,0 +1,29 @@
+package model
+
+type ProjectID string
+
+type ProjectEntry struct {
+	ID      ProjectID `storm:"id"`
+	Version uint64    `storm:"index"`
+	Project *Project
+}
+
+type Project struct {
+	ID          ProjectID       `json:"id" storm:"id"`
+	Label       string          `json:"label"`
+	Description string          `json:"description"`
+	Tasks       map[TaskID]Task `json:"tasks"`
+	Params      Params          `json:"params"`
+}
+
+type Params struct {
+	TaskCategories     map[TaskCategoryID]TaskCategory `json:"taskCategories"`
+	TimeUnit           TimeUnit                        `json:"timeUnit"`
+	Currency           string                          `json:"currency"`
+	RoundUpEstimations bool                            `json:"roundUpEstimations"`
+}
+
+type TimeUnit struct {
+	Acronym string `json:"acronym"`
+	Label   string `json:"label"`
+}

server/internal/model/task.go

@@ -0,0 +1,24 @@
+package model
+
+type TaskID string
+
+type Task struct {
+	ID          TaskID          `json:"id"`
+	Label       string          `json:"label"`
+	Estimations TaskEstimations `json:"estimations"`
+	CategoryID  TaskCategoryID  `json:"category"`
+}
+
+type TaskEstimations struct {
+	Optimistic  float64 `json:"optimistic"`
+	Likely      float64 `json:"likely"`
+	Pessimistic float64 `json:"pessimistic"`
+}
+
+type TaskCategoryID string
+
+type TaskCategory struct {
+	ID              TaskCategoryID `json:"id"`
+	Label           string         `json:"label"`
+	CostPerTimeUnit float64        `json:"costPerTimeUnit"`
+}

server/internal/route/mount.go

@@ -0,0 +1,32 @@
+package route
+
+import (
+	"net/http"
+	"path"
+
+	"forge.cadoles.com/wpetit/guesstimate/internal/config"
+	"github.com/go-chi/chi"
+	"gitlab.com/wpetit/goweb/static"
+)
+
+func Mount(r *chi.Mux, config *config.Config) error {
+	r.Route("/api/v1", func(r chi.Router) {
+		r.Get("/projects/{projectID}", handleGetProject)
+		r.Post("/projects/{projectID}", handleCreateProject)
+		r.Patch("/projects/{projectID}", handlePatchProject)
+		r.Delete("/projects/{projectID}", handleDeleteProject)
+	})
+
+	clientIndex := path.Join(config.HTTP.PublicDir, "index.html")
+
+	serveClientIndex := func(w http.ResponseWriter, r *http.Request) {
+		http.ServeFile(w, r, clientIndex)
+	}
+
+	r.Get("/p/*", serveClientIndex)
+
+	notFoundHandler := r.NotFoundHandler()
+	r.Get("/*", static.Dir(config.HTTP.PublicDir, "", notFoundHandler))
+
+	return nil
+}

server/internal/route/project.go

@@ -0,0 +1,248 @@
+package route
+
+import (
+	"encoding/json"
+	"log"
+	"net/http"
+	"strconv"
+
+	jsonpatch "gopkg.in/evanphx/json-patch.v4"
+
+	"forge.cadoles.com/wpetit/guesstimate/internal/model"
+	"forge.cadoles.com/wpetit/guesstimate/internal/storm"
+	"github.com/go-chi/chi"
+	"github.com/pkg/errors"
+	"gitlab.com/wpetit/goweb/middleware/container"
+)
+
+type projectResponse struct {
+	Version uint64         `json:"version"`
+	Project *model.Project `json:"project"`
+}
+
+func handleGetProject(w http.ResponseWriter, r *http.Request) {
+	ctn := container.Must(r.Context())
+	db := storm.Must(ctn)
+
+	projectID := getProjectID(r)
+
+	var (
+		version uint64
+		err     error
+	)
+
+	rawVersion := r.URL.Query().Get("version")
+	if rawVersion != "" {
+		version, err = strconv.ParseUint(rawVersion, 10, 64)
+		if err != nil {
+			http.Error(w, http.StatusText(http.StatusBadRequest), http.StatusBadRequest)
+
+			return
+		}
+	}
+
+	tx, err := db.Begin(false)
+	if err != nil {
+		panic(errors.Wrap(err, "could not start transaction"))
+	}
+
+	defer func() {
+		if err := tx.Rollback(); err != nil && err != storm.ErrNotInTransaction {
+			panic(errors.Wrap(err, "could not rollback transaction"))
+		}
+	}()
+
+	entry := &model.ProjectEntry{}
+	if err := tx.One("ID", projectID, entry); err != nil {
+		if err == storm.ErrNotFound {
+			http.Error(w, http.StatusText(http.StatusNotFound), http.StatusNotFound)
+
+			return
+		}
+
+		panic(errors.Wrapf(err, "could not find project '%s'", projectID))
+	}
+
+	if rawVersion != "" && entry.Version == version {
+		http.Error(w, http.StatusText(http.StatusNotModified), http.StatusNotModified)
+
+		return
+	}
+
+	if err := writeJSON(w, http.StatusOK, &projectResponse{entry.Version, entry.Project}); err != nil {
+		panic(errors.Wrap(err, "could not write json"))
+	}
+}
+
+type createRequest struct {
+	Project *model.Project `json:"project"`
+}
+
+func handleCreateProject(w http.ResponseWriter, r *http.Request) {
+	ctn := container.Must(r.Context())
+	db := storm.Must(ctn)
+
+	projectID := getProjectID(r)
+
+	log.Printf("handling create request for project %s", projectID)
+
+	createReq := &createRequest{}
+	if err := parseJSONBody(r, createReq); err != nil {
+		http.Error(w, http.StatusText(http.StatusBadRequest), http.StatusBadRequest)
+
+		panic(errors.Wrap(err, "could not parse create request"))
+	}
+
+	tx, err := db.Begin(true)
+	if err != nil {
+		panic(errors.Wrap(err, "could not start transaction"))
+	}
+
+	defer func() {
+		if err := tx.Rollback(); err != nil && err != storm.ErrNotInTransaction {
+			panic(errors.Wrap(err, "could not rollback transaction"))
+		}
+	}()
+
+	entry := &model.ProjectEntry{}
+
+	err = tx.One("ID", projectID, entry)
+	if err == nil {
+		http.Error(w, http.StatusText(http.StatusConflict), http.StatusConflict)
+		return
+	}
+
+	if err != storm.ErrNotFound {
+		panic(errors.Wrapf(err, "could not check project '%s'", projectID))
+	}
+
+	entry.ID = projectID
+	entry.Project = createReq.Project
+	entry.Version = 0
+
+	if err := tx.Save(entry); err != nil {
+		panic(errors.Wrap(err, "could not save project"))
+	}
+
+	if err := tx.Commit(); err != nil {
+		panic(errors.Wrap(err, "could not commit transaction"))
+	}
+
+	if err := writeJSON(w, http.StatusCreated, &projectResponse{entry.Version, entry.Project}); err != nil {
+		panic(errors.Wrap(err, "could not write json response"))
+	}
+}
+
+type patchRequest struct {
+	Version uint64          `json:"version"`
+	Patch   json.RawMessage `json:"patch"`
+}
+
+func handlePatchProject(w http.ResponseWriter, r *http.Request) {
+	ctn := container.Must(r.Context())
+	db := storm.Must(ctn)
+
+	projectID := getProjectID(r)
+
+	log.Printf("handling patch request for project %s", projectID)
+
+	patchReq := &patchRequest{}
+	if err := parseJSONBody(r, patchReq); err != nil {
+		http.Error(w, http.StatusText(http.StatusBadRequest), http.StatusBadRequest)
+
+		panic(errors.Wrap(err, "could not parse patch request"))
+	}
+
+	tx, err := db.Begin(true)
+	if err != nil {
+		panic(errors.Wrap(err, "could not start transaction"))
+	}
+
+	defer func() {
+		if err := tx.Rollback(); err != nil && err != storm.ErrNotInTransaction {
+			panic(errors.Wrap(err, "could not rollback transaction"))
+		}
+	}()
+
+	entry := &model.ProjectEntry{}
+	if err := tx.One("ID", projectID, entry); err != nil {
+		if err == storm.ErrNotFound {
+			http.Error(w, http.StatusText(http.StatusNotFound), http.StatusNotFound)
+
+			return
+		}
+
+		panic(errors.Wrapf(err, "could not find project '%s'", projectID))
+	}
+
+	if entry.Version != patchReq.Version {
+		if err := writeJSON(w, http.StatusConflict, &projectResponse{entry.Version, entry.Project}); err != nil {
+			panic(errors.Wrap(err, "could not write json response"))
+		}
+
+		return
+	}
+
+	projectData, err := json.Marshal(entry.Project)
+	if err != nil {
+		panic(errors.Wrap(err, "could not marshal project"))
+	}
+
+	projectData, err = jsonpatch.MergePatch(projectData, patchReq.Patch)
+	if err != nil {
+		panic(errors.Wrap(err, "could not merge project patch"))
+	}
+
+	newProject := &model.Project{}
+	if err := json.Unmarshal(projectData, newProject); err != nil {
+		panic(errors.Wrap(err, "could not merge project patch"))
+	}
+
+	entry.Version++
+	entry.Project = newProject
+
+	if err := tx.Save(entry); err != nil {
+		panic(errors.Wrap(err, "could not save project"))
+	}
+
+	if err := tx.Commit(); err != nil {
+		panic(errors.Wrap(err, "could not commit transaction"))
+	}
+
+	if err := writeJSON(w, http.StatusOK, &projectResponse{entry.Version, entry.Project}); err != nil {
+		panic(errors.Wrap(err, "could not write json response"))
+	}
+}
+
+func handleDeleteProject(w http.ResponseWriter, r *http.Request) {
+
+}
+
+func getProjectID(r *http.Request) model.ProjectID {
+	return model.ProjectID(chi.URLParam(r, "projectID"))
+}
+
+func parseJSONBody(r *http.Request, payload interface{}) (err error) {
+	decoder := json.NewDecoder(r.Body)
+
+	defer func() {
+		if err = r.Body.Close(); err != nil {
+			err = errors.Wrap(err, "could not close request body")
+		}
+	}()
+
+	if err := decoder.Decode(payload); err != nil {
+		return errors.Wrap(err, "could not decode request body")
+	}
+
+	return nil
+}
+
+func writeJSON(w http.ResponseWriter, statusCode int, data interface{}) error {
+	encoder := json.NewEncoder(w)
+	encoder.SetIndent("", " ")
+	w.WriteHeader(statusCode)
+	w.Header().Set("Content-Type", "application/json")
+
+	return encoder.Encode(data)
+}

server/internal/storm/error.go

@@ -0,0 +1,10 @@
+package storm
+
+import (
+	"github.com/asdine/storm/v3"
+)
+
+var (
+	ErrNotFound         = storm.ErrNotFound
+	ErrNotInTransaction = storm.ErrNotInTransaction
+)

server/internal/storm/option.go

@@ -0,0 +1,51 @@
+package storm
+
+type Option struct {
+	Path    string
+	Objects []interface{}
+	ReIndex bool
+	Init    bool
+}
+
+type OptionFunc func(*Option)
+
+func DefaultOption() *Option {
+	return MergeOption(
+		&Option{},
+		WithPath("data.db"),
+		WithInit(true),
+		WithReIndex(true),
+	)
+}
+
+func MergeOption(opt *Option, funcs ...OptionFunc) *Option {
+	for _, fn := range funcs {
+		fn(opt)
+	}
+
+	return opt
+}
+
+func WithPath(path string) OptionFunc {
+	return func(opt *Option) {
+		opt.Path = path
+	}
+}
+
+func WithReIndex(reindex bool) OptionFunc {
+	return func(opt *Option) {
+		opt.ReIndex = reindex
+	}
+}
+
+func WithInit(init bool) OptionFunc {
+	return func(opt *Option) {
+		opt.Init = init
+	}
+}
+
+func WithObjects(objects ...interface{}) OptionFunc {
+	return func(opt *Option) {
+		opt.Objects = objects
+	}
+}

server/internal/storm/provider.go

@@ -0,0 +1,48 @@
+package storm
+
+import (
+	"reflect"
+
+	"github.com/asdine/storm/v3"
+	"github.com/pkg/errors"
+	"gitlab.com/wpetit/goweb/service"
+)
+
+func ServiceProvider(funcs ...OptionFunc) service.Provider {
+	opt := MergeOption(
+		DefaultOption(),
+		funcs...,
+	)
+
+	db, err := storm.Open(opt.Path)
+
+	if err == nil && opt.Objects != nil {
+		err = migrate(db, opt.Objects, opt.Init, opt.ReIndex)
+	}
+
+	return func(ctn *service.Container) (interface{}, error) {
+		if err != nil {
+			return nil, err
+		}
+		return db, nil
+	}
+}
+
+func migrate(db *storm.DB, objects []interface{}, init, reindex bool) error {
+	for _, o := range objects {
+		if init {
+			if err := db.Init(o); err != nil {
+				return errors.Wrapf(err, "could not init object '%s'", reflect.TypeOf(o).String())
+			}
+		}
+
+		if reindex {
+			if err := db.ReIndex(o); err != nil {
+				return errors.Wrapf(err, "could not reindex object '%s'", reflect.TypeOf(o).String())
+			}
+		}
+
+	}
+
+	return nil
+}

server/internal/storm/service.go

@@ -0,0 +1,34 @@
+package storm
+
+import (
+	"github.com/asdine/storm/v3"
+	"github.com/pkg/errors"
+	"gitlab.com/wpetit/goweb/service"
+)
+
+const ServiceName service.Name = "storm"
+
+// From retrieves the storm service in the given container
+func From(container *service.Container) (*storm.DB, error) {
+	service, err := container.Service(ServiceName)
+	if err != nil {
+		return nil, errors.Wrapf(err, "error while retrieving '%s' service", ServiceName)
+	}
+
+	srv, ok := service.(*storm.DB)
+	if !ok {
+		return nil, errors.Errorf("retrieved service is not a valid '%s' service", ServiceName)
+	}
+
+	return srv, nil
+}
+
+// Must retrieves the storm service in the given container or panic otherwise
+func Must(container *service.Container) *storm.DB {
+	srv, err := From(container)
+	if err != nil {
+		panic(err)
+	}
+
+	return srv
+}

src/hooks/use-project-estimations.ts

@@ -1,35 +0,0 @@
-import { Project } from "../models/project";
-import { useState, useEffect } from "preact/hooks";
-import { getProjectWeightedMean, getProjectStandardDeviation } from "../util/stat";
-
-export interface Estimation {
-    e: number
-    sd: number
-}
-
-export interface ProjetEstimations {
-    p99: Estimation
-    p90: Estimation
-    p68: Estimation
-}
-
-export function useProjectEstimations(p :Project): ProjetEstimations {
-    const [ estimations, setEstimations ] = useState({
-        p99: { e: 0, sd: 0 },
-        p90: { e: 0, sd: 0 },
-        p68: { e: 0, sd: 0 },
-    });
-
-    useEffect(() => {
-        const projectWeightedMean = getProjectWeightedMean(p)
-        const projectStandardDeviation = getProjectStandardDeviation(p);
-
-        setEstimations({
-            p99: { e: projectWeightedMean, sd: (projectStandardDeviation * 3) },
-            p90: { e: projectWeightedMean, sd: (projectStandardDeviation * 1.645) },
-            p68: { e: projectWeightedMean, sd: (projectStandardDeviation) },
-        })
-    }, [p.tasks]);
-
-    return estimations;
-}

src/hooks/use-project-reducer.ts

@@ -1,301 +0,0 @@
-import { Project } from "../models/project";
-import { Task, TaskID, EstimationConfidence, TaskCategoryID, TaskCategory } from "../models/task";
-import { useReducer } from "preact/hooks";
-
-export interface Action {
-    type: string
-}
-
-export type ProjectReducerActions =
-    AddTask |
-    RemoveTask |
-    UpdateTaskEstimation |
-    UpdateProjectLabel |
-    UpdateTaskLabel |
-    UpdateParam |
-    UpdateTaskCategoryLabel |
-    UpdateTaskCategoryCost |
-    AddTaskCategory |
-    RemoveTaskCategory
-
-export function useProjectReducer(project: Project) {
-    return useReducer(projectReducer, project);
-}
-
-export function projectReducer(project: Project, action: ProjectReducerActions): Project {
-    console.log(action);
-    switch(action.type) {
-        case ADD_TASK:
-            return handleAddTask(project, action as AddTask);
-
-        case REMOVE_TASK:
-            return handleRemoveTask(project, action as RemoveTask);
-
-        case UPDATE_TASK_ESTIMATION:
-            return handleUpdateTaskEstimation(project, action as UpdateTaskEstimation);
-
-        case UPDATE_PROJECT_LABEL:
-            return handleUpdateProjectLabel(project, action as UpdateProjectLabel);
-
-        case UPDATE_TASK_LABEL:
-            return handleUpdateTaskLabel(project, action as UpdateTaskLabel);
-
-        case UPDATE_PARAM:
-            return handleUpdateParam(project, action as UpdateParam);
-
-        case ADD_TASK_CATEGORY:
-            return handleAddTaskCategory(project, action as AddTaskCategory);
-        
-        case REMOVE_TASK_CATEGORY:
-            return handleRemoveTaskCategory(project, action as RemoveTaskCategory);
-
-        case UPDATE_TASK_CATEGORY_LABEL:
-            return handleUpdateTaskCategoryLabel(project, action as UpdateTaskCategoryLabel);
-        
-        case UPDATE_TASK_CATEGORY_COST:
-            return handleUpdateTaskCategoryCost(project, action as UpdateTaskCategoryCost);
-    }
-
-    return project;
-}
-
-export interface AddTask extends Action {
-    task: Task
-}
-
-export const ADD_TASK = "ADD_TASK";
-
-export function addTask(task: Task): AddTask {
-    return { type: ADD_TASK, task };
-}
-
-export function handleAddTask(project: Project, action: AddTask): Project {
-    const task = { ...action.task };
-    return {
-        ...project,
-        tasks: {
-            ...project.tasks,
-            [task.id]: task,
-        }
-    };
-}
-
-export interface RemoveTask extends Action {
-    id: TaskID
-}
-
-export const REMOVE_TASK = "REMOVE_TASK";
-
-export function removeTask(id: TaskID): RemoveTask {
-    return { type: REMOVE_TASK, id };
-}
-
-export function handleRemoveTask(project: Project, action: RemoveTask): Project {
-    const tasks = { ...project.tasks };
-    delete tasks[action.id];
-    return {
-        ...project,
-        tasks
-    };
-}
-
-export interface UpdateTaskEstimation extends Action {
-    id: TaskID
-    confidence: string
-    value: number
-}
-
-export const UPDATE_TASK_ESTIMATION = "UPDATE_TASK_ESTIMATION";
-
-export function updateTaskEstimation(id: TaskID, confidence: EstimationConfidence, value: number): UpdateTaskEstimation {
-    return { type: UPDATE_TASK_ESTIMATION, id, confidence, value };
-}
-
-export function handleUpdateTaskEstimation(project: Project, action: UpdateTaskEstimation): Project {
-    const estimations = {
-        ...project.tasks[action.id].estimations,
-        [action.confidence]: action.value
-    };
-
-    if (estimations.likely < estimations.optimistic) {
-        estimations.likely = estimations.optimistic;
-    }
-
-    if (estimations.pessimistic < estimations.likely) {
-        estimations.pessimistic = estimations.likely;
-    }
-
-    return {
-        ...project,
-        tasks: {
-            ...project.tasks,
-            [action.id]: {
-                ...project.tasks[action.id],
-                estimations: estimations,
-            }
-        }
-    };
-}
-
-
-export interface UpdateProjectLabel extends Action {
-    label: string
-}
-
-export const UPDATE_PROJECT_LABEL = "UPDATE_PROJECT_LABEL";
-
-export function updateProjectLabel(label: string): UpdateProjectLabel {
-    return { type: UPDATE_PROJECT_LABEL, label };
-}
-
-export function handleUpdateProjectLabel(project: Project, action: UpdateProjectLabel): Project {
-    return {
-        ...project,
-        label: action.label
-    };
-}
-
-export interface UpdateTaskLabel extends Action {
-    id: TaskID
-    label: string
-}
-
-export const UPDATE_TASK_LABEL = "UPDATE_TASK_LABEL";
-
-export function updateTaskLabel(id: TaskID, label: string): UpdateTaskLabel {
-    return { type: UPDATE_TASK_LABEL, id, label };
-}
-
-export function handleUpdateTaskLabel(project: Project, action: UpdateTaskLabel): Project {
-    return {
-        ...project,
-        tasks: {
-            ...project.tasks,
-            [action.id]: {
-                ...project.tasks[action.id],
-                label: action.label,
-            }
-        }
-    };
-}
-
-export interface UpdateParam extends Action {
-    name: string
-    value: any
-}
-
-export const UPDATE_PARAM = "UPDATE_PARAM";
-
-export function updateParam(name: string, value: any): UpdateParam {
-    return { type: UPDATE_PARAM, name, value };
-}
-
-export function handleUpdateParam(project: Project, action: UpdateParam): Project {
-    return {
-        ...project,
-        params: {
-            ...project.params,
-            [action.name]: action.value,
-        }
-    };
-}
-
-export interface UpdateTaskCategoryLabel extends Action {
-    categoryId: TaskCategoryID
-    label: string
-}
-
-export const UPDATE_TASK_CATEGORY_LABEL = "UPDATE_TASK_CATEGORY_LABEL";
-
-export function updateTaskCategoryLabel(categoryId: TaskCategoryID, label: string): UpdateTaskCategoryLabel {
-    return { type: UPDATE_TASK_CATEGORY_LABEL, categoryId, label };
-}
-
-export function handleUpdateTaskCategoryLabel(project: Project, action: UpdateTaskCategoryLabel): Project {
-    return {
-        ...project,
-        params: {
-            ...project.params,
-            taskCategories: {
-                ...project.params.taskCategories,
-                [action.categoryId]: {
-                    ...project.params.taskCategories[action.categoryId],
-                    label: action.label
-                },
-            }
-        }
-    };
-}
-
-export interface UpdateTaskCategoryCost extends Action {
-    categoryId: TaskCategoryID
-    costPerTimeUnit: number
-}
-
-export const UPDATE_TASK_CATEGORY_COST = "UPDATE_TASK_CATEGORY_COST";
-
-export function updateTaskCategoryCost(categoryId: TaskCategoryID, costPerTimeUnit: number): UpdateTaskCategoryCost {
-    return { type: UPDATE_TASK_CATEGORY_COST, categoryId, costPerTimeUnit };
-}
-
-export function handleUpdateTaskCategoryCost(project: Project, action: UpdateTaskCategoryCost): Project {
-    return {
-        ...project,
-        params: {
-            ...project.params,
-            taskCategories: {
-                ...project.params.taskCategories,
-                [action.categoryId]: {
-                    ...project.params.taskCategories[action.categoryId],
-                    costPerTimeUnit: action.costPerTimeUnit
-                },
-            }
-        }
-    };
-}
-
-export const ADD_TASK_CATEGORY = "ADD_TASK_CATEGORY";
-
-export interface AddTaskCategory extends Action {
-    taskCategory: TaskCategory
-}
-
-export function addTaskCategory(taskCategory: TaskCategory): AddTaskCategory {
-    return { type: ADD_TASK_CATEGORY, taskCategory };
-}
-
-export function handleAddTaskCategory(project: Project, action: AddTaskCategory): Project {
-    const taskCategory = { ...action.taskCategory };
-    return {
-        ...project,
-        params: {
-            ...project.params,
-            taskCategories: {
-                ...project.params.taskCategories,
-                [taskCategory.id]: taskCategory,
-            }
-        }
-    };
-}
-
-export interface RemoveTaskCategory extends Action {
-    taskCategoryId: TaskCategoryID
-}
-
-export const REMOVE_TASK_CATEGORY = "REMOVE_TASK_CATEGORY";
-
-export function removeTaskCategory(taskCategoryId: TaskCategoryID): RemoveTaskCategory {
-    return { type: REMOVE_TASK_CATEGORY, taskCategoryId };
-}
-
-export function handleRemoveTaskCategory(project: Project, action: RemoveTaskCategory): Project {
-    const taskCategories = { ...project.params.taskCategories };
-    delete taskCategories[action.taskCategoryId];
-    return {
-        ...project,
-        params: {
-            ...project.params,
-            taskCategories
-        }
-    };
-}

src/models/project.ts

@@ -1,29 +0,0 @@
-import { Task, TaskCategory, TaskID } from './task';
-import { Params, defaults } from "./params";
-import { uuidV4 } from "../util/uuid";
-
-export type ProjectID = string;
-
-export interface Project {
-    id: ProjectID
-    label: string
-    description: string
-    tasks: Tasks
-    params: Params
-}
-
-export interface Tasks {
-    [id: string]: Task
-}
-
-export function newProject(id?: string): Project {
-    return {
-        id: id ? id : uuidV4(),
-        label: "",
-        description: "",
-        tasks: {},
-        params: {
-          ...defaults
-        },
-    };
-}