#!/bin/bash

set -eo pipefail

GITEA_PACKAGE_BASE_URL=${GITEA_BASE_URL:-https://forge.cadoles.com}
GITEA_PACKAGE_USERNAME=${GITEA_PACKAGE_USERNAME}
GITEA_PACKAGE_PASSWORD=${GITEA_PACKAGE_PASSWORD}
GITEA_PACKAGE_OWNER=${GITEA_PACKAGE_OWNER}
GITEA_PACKAGE_FILES=${GITEA_PACKAGE_FILES}
GITEA_PACKAGE_CURL_MAX_RETRY=${GITEA_PACKAGE_CURL_MAX_RETRY:-3}
GITEA_PACKAGE_TYPE=${GITEA_PACKAGE_TYPE:-generic}

function check_dependencies {
    assert_command_available 'curl'
    assert_command_available 'jq'
}

function assert_command_available {
    local command=$1
    local command_path=$(which $command)

    if [ -z "$command_path" ]; then
        echo "The '$command' command could not be found. Please install it before using this script." 1>&2
        exit 1
    fi
}

function check_environment {
    assert_environment GITEA_PACKAGE_BASE_URL
    assert_environment GITEA_PACKAGE_FILES
    assert_environment GITEA_PACKAGE_OWNER
}

function source_env_file {
    if [ ! -f '.env' ]; then
        return 0
    fi
    set -o allexport
    source .env
    set +o allexport
}

function assert_environment {
    local name=$1
    local value=${!name}

    if [ -z "$value" ]; then
        echo "The $"$name" environment variable is empty." 1>&2
        exit 1
    fi
}

function ask_credentials {
    if [ -z "$GITEA_PACKAGE_USERNAME" ]; then
        echo -n "Username: "
        read GITEA_PACKAGE_USERNAME
        
    fi
    if [ -z "$GITEA_PACKAGE_PASSWORD" ]; then
        echo -n "Password: "
        stty -echo
        read GITEA_PACKAGE_PASSWORD
        stty echo 
        echo
    fi
}

function upload_package {
    echo "Uploading package(s)..."
    case "$GITEA_PACKAGE_TYPE" in
        generic)
            upload_generic_package
            ;;
        alpine)
            upload_alpine_package
            ;;
        *)
            echo "Unknown package type '$GITEA_PACKAGE_TYPE'. Please check $"$GITEA_PACKAGE_TYPE" environment variable value." 1>&2
            exit 1
    esac
    echo "Done"
}

function upload_generic_package {
    assert_environment GITEA_PACKAGE_GENERIC_PACKAGE_NAME
    assert_environment GITEA_PACKAGE_GENERIC_PACKAGE_VERSION

    for f in $GITEA_PACKAGE_FILES; do
        local filename=$(basename $f)
        echo "Uploading file '$f' as generic package $GITEA_PACKAGE_OWNER/$GITEA_PACKAGE_GENERIC_PACKAGE_NAME/$GITEA_PACKAGE_GENERIC_PACKAGE_VERSION..."
        gitea_api "/api/packages/$GITEA_PACKAGE_OWNER/generic/$GITEA_PACKAGE_GENERIC_PACKAGE_NAME/$GITEA_PACKAGE_GENERIC_PACKAGE_VERSION/$filename" \
            -X PUT \
            --upload-file "$f"
    done
}

function upload_alpine_package {
    assert_environment GITEA_PACKAGE_ALPINE_PACKAGE_BRANCH
    assert_environment GITEA_PACKAGE_ALPINE_PACKAGE_REPOSITORY

    for f in $GITEA_PACKAGE_FILES; do
        local filename=$(basename $f)
        echo "Uploading file '$f' as alpine package $GITEA_PACKAGE_OWNER/$GITEA_PACKAGE_ALPINE_PACKAGE_BRANCH/$GITEA_PACKAGE_ALPINE_PACKAGE_REPOSITORY..."
        gitea_api "/api/packages/$GITEA_PACKAGE_OWNER/alpine/$GITEA_PACKAGE_ALPINE_PACKAGE_BRANCH/$GITEA_PACKAGE_ALPINE_PACKAGE_REPOSITORY" \
            -X PUT \
            --upload-file "$f"
    done
}

function gitea_api {
    local path=$1
    local args=${@:2}

    curl -L \
        --fail \
        --ipv4 \
        --progress-bar \
        --retry "$GITEA_PACKAGE_CURL_MAX_RETRY" \
        -u "$GITEA_PACKAGE_USERNAME:$GITEA_PACKAGE_PASSWORD" \
        $GITEA_PACKAGE_CURL_ARGS \
        ${args} \
        "$GITEA_PACKAGE_BASE_URL$path"
}

function main {
    check_dependencies
    source_env_file
    check_environment
    ask_credentials
    upload_package
}

main