94 lines
2.7 KiB
TypeScript
94 lines
2.7 KiB
TypeScript
import { Project } from "../models/project";
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import { Task, TaskID, EstimationConfidence } from "../models/task";
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import { useReducer } from "preact/hooks";
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export interface Action {
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type: string
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}
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export type ProjectReducerActions =
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AddTaskAction |
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RemoveTaskAction |
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UpdateTaskEstimation
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export function useProjectReducer(project: Project) {
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return useReducer(projectReducer, project);
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}
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export function projectReducer(project: Project, action: ProjectReducerActions): Project {
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switch(action.type) {
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case ADD_TASK:
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const task = { ...(action as AddTaskAction).task };
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return {
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...project,
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tasks: {
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...project.tasks,
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[task.id]: task,
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}
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};
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case REMOVE_TASK:
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action = action as RemoveTaskAction;
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const tasks = { ...project.tasks };
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delete tasks[action.id];
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return {
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...project,
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tasks
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};
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case UPDATE_TASK_ESTIMATION:
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action = action as UpdateTaskEstimation;
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const estimations = {
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...project.tasks[action.id].estimations,
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[(action as UpdateTaskEstimation).confidence]: (action as UpdateTaskEstimation).value
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};
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if (estimations.likely <= estimations.optimistic) {
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estimations.likely = estimations.optimistic + 1;
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}
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if (estimations.pessimistic <= estimations.likely) {
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estimations.pessimistic = estimations.likely + 1;
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}
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return {
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...project,
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tasks: {
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...project.tasks,
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[action.id]: {
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...project.tasks[action.id],
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estimations: estimations,
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}
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}
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};
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}
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return project;
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}
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export interface AddTaskAction extends Action {
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task: Task
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}
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export const ADD_TASK = "ADD_TASK";
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export function addTask(task: Task): AddTaskAction {
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return { type: ADD_TASK, task };
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}
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export interface RemoveTaskAction extends Action {
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id: TaskID
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}
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export const REMOVE_TASK = "REMOVE_TASK";
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export function removeTask(id: TaskID): RemoveTaskAction {
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return { type: REMOVE_TASK, id };
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}
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export interface UpdateTaskEstimation extends Action {
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id: TaskID
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confidence: string
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value: number
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}
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export const UPDATE_TASK_ESTIMATION = "UPDATE_TASK_ESTIMATION";
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export function updateTaskEstimation(id: TaskID, confidence: EstimationConfidence, value: number): UpdateTaskEstimation {
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return { type: UPDATE_TASK_ESTIMATION, id, confidence, value };
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} |