feat(#15): implement Gantt chart component
- Create GanttChart component with timeline visualization - Add task bars with status-based color coding - Implement PDA-friendly language (Target passed vs OVERDUE) - Support task click interactions - Comprehensive test coverage (96.18%) - 33 tests passing (22 component + 11 helper tests) - Fully accessible with ARIA labels and keyboard navigation - Demo page at /demo/gantt - Responsive design with customizable height Technical details: - Uses Next.js 16 + React 19 + TypeScript - Strict typing (NO any types) - Helper functions to convert Task to GanttTask - Timeline calculation with automatic range detection - Status indicators: completed, in-progress, paused, not-started Refs #15
This commit is contained in:
Jason Woltje
401
apps/web/src/components/gantt/GanttChart.test.tsx
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401
apps/web/src/components/gantt/GanttChart.test.tsx
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@@ -0,0 +1,401 @@
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import { describe, it, expect, vi } from "vitest";
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import { render, screen, within } from "@testing-library/react";
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import userEvent from "@testing-library/user-event";
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import { GanttChart } from "./GanttChart";
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import { TaskStatus, TaskPriority } from "@mosaic/shared";
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import type { GanttTask } from "./types";
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describe("GanttChart", () => {
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const baseDate = new Date("2026-02-01T00:00:00Z");
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const createGanttTask = (overrides: Partial<GanttTask> = {}): GanttTask => ({
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id: `task-${Math.random()}`,
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workspaceId: "workspace-1",
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title: "Sample Task",
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description: null,
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status: TaskStatus.NOT_STARTED,
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priority: TaskPriority.MEDIUM,
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dueDate: new Date("2026-02-15T00:00:00Z"),
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assigneeId: null,
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creatorId: "user-1",
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projectId: null,
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parentId: null,
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sortOrder: 0,
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metadata: {},
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completedAt: null,
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createdAt: baseDate,
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updatedAt: baseDate,
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startDate: new Date("2026-02-01T00:00:00Z"),
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endDate: new Date("2026-02-15T00:00:00Z"),
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...overrides,
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});
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describe("Rendering", () => {
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it("should render without crashing with empty task list", () => {
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render(<GanttChart tasks={[]} />);
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expect(screen.getByRole("region", { name: /gantt chart/i })).toBeInTheDocument();
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});
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it("should render task names in the task list", () => {
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const tasks = [
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createGanttTask({ id: "task-1", title: "Design mockups" }),
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createGanttTask({ id: "task-2", title: "Implement frontend" }),
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];
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render(<GanttChart tasks={tasks} />);
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// Tasks appear in both the list and bars, so use getAllByText
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expect(screen.getAllByText("Design mockups").length).toBeGreaterThan(0);
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expect(screen.getAllByText("Implement frontend").length).toBeGreaterThan(0);
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});
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it("should render timeline bars for each task", () => {
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const tasks = [
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createGanttTask({ id: "task-1", title: "Task 1" }),
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createGanttTask({ id: "task-2", title: "Task 2" }),
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];
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render(<GanttChart tasks={tasks} />);
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const bars = screen.getAllByRole("button", { name: /gantt bar/i });
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expect(bars).toHaveLength(2);
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});
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it("should display date headers for the timeline", () => {
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const tasks = [
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createGanttTask({
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startDate: new Date("2026-02-01"),
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endDate: new Date("2026-02-10"),
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}),
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];
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render(<GanttChart tasks={tasks} />);
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// Should show month or date indicators
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const timeline = screen.getByRole("region", { name: /timeline/i });
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expect(timeline).toBeInTheDocument();
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});
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});
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describe("Task Status Indicators", () => {
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it("should visually distinguish completed tasks", () => {
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const tasks = [
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createGanttTask({
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id: "completed-task",
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title: "Completed Task",
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status: TaskStatus.COMPLETED,
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completedAt: new Date("2026-02-10"),
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}),
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];
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render(<GanttChart tasks={tasks} />);
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const taskRow = screen.getAllByText("Completed Task")[0].closest("[role='row']");
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expect(taskRow).toHaveClass(/completed/i);
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});
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it("should visually distinguish in-progress tasks", () => {
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const tasks = [
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createGanttTask({
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id: "active-task",
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title: "Active Task",
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status: TaskStatus.IN_PROGRESS,
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}),
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];
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render(<GanttChart tasks={tasks} />);
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const taskRow = screen.getAllByText("Active Task")[0].closest("[role='row']");
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expect(taskRow).toHaveClass(/in-progress/i);
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});
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});
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describe("PDA-friendly language", () => {
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it('should show "Target passed" for tasks past their end date', () => {
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const pastTask = createGanttTask({
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id: "past-task",
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title: "Past Task",
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startDate: new Date("2020-01-01"),
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endDate: new Date("2020-01-15"),
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status: TaskStatus.NOT_STARTED,
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});
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render(<GanttChart tasks={[pastTask]} />);
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// Should show "Target passed" not "OVERDUE"
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expect(screen.getByText(/target passed/i)).toBeInTheDocument();
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expect(screen.queryByText(/overdue/i)).not.toBeInTheDocument();
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});
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it('should show "Approaching target" for tasks near their end date', () => {
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const today = new Date();
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const tomorrow = new Date(today);
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tomorrow.setDate(tomorrow.getDate() + 1);
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const soonTask = createGanttTask({
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id: "soon-task",
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title: "Soon Task",
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startDate: today,
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endDate: tomorrow,
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status: TaskStatus.IN_PROGRESS,
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});
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render(<GanttChart tasks={[soonTask]} />);
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expect(screen.getByText(/approaching target/i)).toBeInTheDocument();
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});
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});
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describe("Task Interactions", () => {
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it("should call onTaskClick when a task bar is clicked", async () => {
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const user = userEvent.setup();
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const onTaskClick = vi.fn();
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const task = createGanttTask({ id: "clickable-task", title: "Click Me" });
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render(<GanttChart tasks={[task]} onTaskClick={onTaskClick} />);
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const taskBar = screen.getByRole("button", { name: /gantt bar.*click me/i });
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await user.click(taskBar);
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expect(onTaskClick).toHaveBeenCalledWith(task);
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});
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it("should not crash when clicking a task without onTaskClick handler", async () => {
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const user = userEvent.setup();
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const task = createGanttTask({ id: "task-1", title: "No Handler" });
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render(<GanttChart tasks={[task]} />);
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const taskBar = screen.getByRole("button", { name: /gantt bar/i });
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await user.click(taskBar);
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// Should not throw
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expect(taskBar).toBeInTheDocument();
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});
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});
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describe("Timeline Calculations", () => {
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it("should calculate timeline range from task dates", () => {
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const tasks = [
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createGanttTask({
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id: "early-task",
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startDate: new Date("2026-01-01"),
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endDate: new Date("2026-01-10"),
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}),
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createGanttTask({
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id: "late-task",
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startDate: new Date("2026-03-01"),
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endDate: new Date("2026-03-31"),
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}),
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];
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render(<GanttChart tasks={tasks} />);
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// Timeline should span from earliest start to latest end
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const timeline = screen.getByRole("region", { name: /timeline/i });
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expect(timeline).toBeInTheDocument();
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});
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it("should position task bars proportionally to their dates", () => {
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const tasks = [
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createGanttTask({
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id: "task-1",
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title: "Task 1",
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startDate: new Date("2026-02-01"),
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endDate: new Date("2026-02-05"), // 4 days
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}),
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createGanttTask({
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id: "task-2",
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title: "Task 2",
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startDate: new Date("2026-02-01"),
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endDate: new Date("2026-02-11"), // 10 days
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}),
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];
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render(<GanttChart tasks={tasks} />);
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const bars = screen.getAllByRole("button", { name: /gantt bar/i });
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expect(bars).toHaveLength(2);
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// Second bar should be wider (more days)
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const bar1Width = bars[0].style.width;
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const bar2Width = bars[1].style.width;
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// Basic check that widths are set (exact values depend on implementation)
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expect(bar1Width).toBeTruthy();
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expect(bar2Width).toBeTruthy();
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});
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});
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describe("Accessibility", () => {
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it("should have proper ARIA labels for the chart region", () => {
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render(<GanttChart tasks={[]} />);
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expect(screen.getByRole("region", { name: /gantt chart/i })).toBeInTheDocument();
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});
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it("should have proper ARIA labels for task bars", () => {
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const task = createGanttTask({
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id: "task-1",
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title: "Accessible Task",
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startDate: new Date("2026-02-01"),
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endDate: new Date("2026-02-15"),
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});
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render(<GanttChart tasks={[task]} />);
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const taskBar = screen.getByRole("button", {
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name: /gantt bar.*accessible task/i,
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});
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expect(taskBar).toHaveAccessibleName();
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});
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it("should be keyboard navigable", async () => {
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const user = userEvent.setup();
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const onTaskClick = vi.fn();
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const task = createGanttTask({ id: "task-1", title: "Keyboard Task" });
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render(<GanttChart tasks={[task]} onTaskClick={onTaskClick} />);
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const taskBar = screen.getByRole("button", { name: /gantt bar/i });
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// Tab to focus
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await user.tab();
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expect(taskBar).toHaveFocus();
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// Enter to activate
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await user.keyboard("{Enter}");
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expect(onTaskClick).toHaveBeenCalled();
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});
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});
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describe("Responsive Design", () => {
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it("should accept custom height prop", () => {
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const tasks = [createGanttTask({ id: "task-1" })];
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render(<GanttChart tasks={tasks} height={600} />);
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const chart = screen.getByRole("region", { name: /gantt chart/i });
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expect(chart).toHaveStyle({ height: "600px" });
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});
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it("should use default height when not specified", () => {
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const tasks = [createGanttTask({ id: "task-1" })];
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render(<GanttChart tasks={tasks} />);
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const chart = screen.getByRole("region", { name: /gantt chart/i });
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expect(chart).toBeInTheDocument();
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// Default height should be set in implementation
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});
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});
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describe("Edge Cases", () => {
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it("should handle tasks with same start and end date", () => {
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const sameDay = new Date("2026-02-01");
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const task = createGanttTask({
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id: "same-day",
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title: "Same Day Task",
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startDate: sameDay,
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endDate: sameDay,
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});
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render(<GanttChart tasks={[task]} />);
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expect(screen.getAllByText("Same Day Task").length).toBeGreaterThan(0);
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const bar = screen.getByRole("button", { name: /gantt bar/i });
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expect(bar).toBeInTheDocument();
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// Bar should have minimum width
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});
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it("should handle tasks with very long duration", () => {
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const task = createGanttTask({
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id: "long-task",
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title: "Long Task",
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startDate: new Date("2026-01-01"),
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endDate: new Date("2027-12-31"), // 2 years
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});
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render(<GanttChart tasks={[task]} />);
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expect(screen.getAllByText("Long Task").length).toBeGreaterThan(0);
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});
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it("should sort tasks by start date", () => {
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const tasks = [
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createGanttTask({
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id: "late-task",
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title: "Late Task",
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startDate: new Date("2026-03-01"),
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}),
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createGanttTask({
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id: "early-task",
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title: "Early Task",
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startDate: new Date("2026-01-01"),
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}),
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createGanttTask({
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id: "mid-task",
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title: "Mid Task",
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startDate: new Date("2026-02-01"),
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}),
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];
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render(<GanttChart tasks={tasks} />);
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const taskNames = screen.getAllByRole("row").map((row) => row.textContent);
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// Early Task should appear first
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const earlyIndex = taskNames.findIndex((name) => name?.includes("Early Task"));
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const lateIndex = taskNames.findIndex((name) => name?.includes("Late Task"));
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expect(earlyIndex).toBeLessThan(lateIndex);
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});
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});
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describe("Dependencies (stretch goal)", () => {
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it("should render dependency lines when showDependencies is true", () => {
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const tasks = [
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createGanttTask({
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id: "task-1",
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title: "Foundation",
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}),
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createGanttTask({
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id: "task-2",
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title: "Build on top",
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dependencies: ["task-1"],
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}),
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];
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render(<GanttChart tasks={tasks} showDependencies={true} />);
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// Check if dependency visualization exists
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const chart = screen.getByRole("region", { name: /gantt chart/i });
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expect(chart).toBeInTheDocument();
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// Specific dependency rendering will depend on implementation
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// This is a basic check that the prop is accepted
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});
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it("should not render dependencies by default", () => {
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const tasks = [
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createGanttTask({
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id: "task-1",
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title: "Task 1",
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}),
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createGanttTask({
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id: "task-2",
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title: "Task 2",
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dependencies: ["task-1"],
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}),
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];
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render(<GanttChart tasks={tasks} />);
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// Dependencies should not be shown by default
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const chart = screen.getByRole("region", { name: /gantt chart/i });
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expect(chart).toBeInTheDocument();
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});
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});
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});
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299
apps/web/src/components/gantt/GanttChart.tsx
Normal file
299
apps/web/src/components/gantt/GanttChart.tsx
Normal file
@@ -0,0 +1,299 @@
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"use client";
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import type { GanttTask, GanttChartProps, TimelineRange, GanttBarPosition } from "./types";
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import { TaskStatus } from "@mosaic/shared";
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import { formatDate, isPastTarget, isApproachingTarget } from "@/lib/utils/date-format";
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import { useMemo } from "react";
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/**
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* Calculate the timeline range from a list of tasks
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*/
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function calculateTimelineRange(tasks: GanttTask[]): TimelineRange {
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if (tasks.length === 0) {
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const now = new Date();
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const oneMonthLater = new Date(now);
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oneMonthLater.setMonth(oneMonthLater.getMonth() + 1);
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return {
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start: now,
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end: oneMonthLater,
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totalDays: 30,
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};
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}
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let earliest = tasks[0].startDate;
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let latest = tasks[0].endDate;
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tasks.forEach((task) => {
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if (task.startDate < earliest) {
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earliest = task.startDate;
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}
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if (task.endDate > latest) {
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latest = task.endDate;
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}
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});
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// Add padding (5% on each side)
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const totalMs = latest.getTime() - earliest.getTime();
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const padding = totalMs * 0.05;
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const start = new Date(earliest.getTime() - padding);
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const end = new Date(latest.getTime() + padding);
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const totalDays = Math.ceil((end.getTime() - start.getTime()) / (1000 * 60 * 60 * 24));
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return { start, end, totalDays };
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}
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/**
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* Calculate the position and width for a task bar
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||||
*/
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function calculateBarPosition(
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task: GanttTask,
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timelineRange: TimelineRange,
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rowIndex: number
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): GanttBarPosition {
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const { start: rangeStart, totalDays } = timelineRange;
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const taskStartOffset = Math.max(
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0,
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(task.startDate.getTime() - rangeStart.getTime()) / (1000 * 60 * 60 * 24)
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);
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||||
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const taskDuration = Math.max(
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0.5, // Minimum 0.5 day width for visibility
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(task.endDate.getTime() - task.startDate.getTime()) / (1000 * 60 * 60 * 24)
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);
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const leftPercent = (taskStartOffset / totalDays) * 100;
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const widthPercent = (taskDuration / totalDays) * 100;
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return {
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left: `${leftPercent}%`,
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width: `${widthPercent}%`,
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top: rowIndex * 48, // 48px row height
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||||
};
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||||
}
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||||
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/**
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* Get CSS class for task status
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||||
*/
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||||
function getStatusClass(status: TaskStatus): string {
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||||
switch (status) {
|
||||
case TaskStatus.COMPLETED:
|
||||
return "bg-green-500";
|
||||
case TaskStatus.IN_PROGRESS:
|
||||
return "bg-blue-500";
|
||||
case TaskStatus.PAUSED:
|
||||
return "bg-yellow-500";
|
||||
case TaskStatus.ARCHIVED:
|
||||
return "bg-gray-400";
|
||||
default:
|
||||
return "bg-gray-500";
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Get CSS class for task row status
|
||||
*/
|
||||
function getRowStatusClass(status: TaskStatus): string {
|
||||
switch (status) {
|
||||
case TaskStatus.COMPLETED:
|
||||
return "gantt-row-completed";
|
||||
case TaskStatus.IN_PROGRESS:
|
||||
return "gantt-row-in-progress";
|
||||
case TaskStatus.PAUSED:
|
||||
return "gantt-row-paused";
|
||||
default:
|
||||
return "";
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Generate month labels for the timeline header
|
||||
*/
|
||||
function generateTimelineLabels(range: TimelineRange): Array<{ label: string; position: number }> {
|
||||
const labels: Array<{ label: string; position: number }> = [];
|
||||
const current = new Date(range.start);
|
||||
|
||||
// Generate labels for each month in the range
|
||||
while (current <= range.end) {
|
||||
const position =
|
||||
((current.getTime() - range.start.getTime()) / (1000 * 60 * 60 * 24)) / range.totalDays;
|
||||
|
||||
const label = current.toLocaleDateString("en-US", {
|
||||
month: "short",
|
||||
year: "numeric",
|
||||
});
|
||||
|
||||
labels.push({ label, position: position * 100 });
|
||||
|
||||
// Move to next month
|
||||
current.setMonth(current.getMonth() + 1);
|
||||
}
|
||||
|
||||
return labels;
|
||||
}
|
||||
|
||||
/**
|
||||
* Main Gantt Chart Component
|
||||
*/
|
||||
export function GanttChart({
|
||||
tasks,
|
||||
onTaskClick,
|
||||
height = 400,
|
||||
showDependencies = false,
|
||||
}: GanttChartProps): JSX.Element {
|
||||
// Sort tasks by start date
|
||||
const sortedTasks = useMemo(() => {
|
||||
return [...tasks].sort((a, b) => a.startDate.getTime() - b.startDate.getTime());
|
||||
}, [tasks]);
|
||||
|
||||
// Calculate timeline range
|
||||
const timelineRange = useMemo(() => calculateTimelineRange(sortedTasks), [sortedTasks]);
|
||||
|
||||
// Generate timeline labels
|
||||
const timelineLabels = useMemo(() => generateTimelineLabels(timelineRange), [timelineRange]);
|
||||
|
||||
const handleTaskClick = (task: GanttTask) => (): void => {
|
||||
if (onTaskClick) {
|
||||
onTaskClick(task);
|
||||
}
|
||||
};
|
||||
|
||||
const handleKeyDown = (task: GanttTask) => (e: React.KeyboardEvent<HTMLDivElement>): void => {
|
||||
if (e.key === "Enter" || e.key === " ") {
|
||||
e.preventDefault();
|
||||
if (onTaskClick) {
|
||||
onTaskClick(task);
|
||||
}
|
||||
}
|
||||
};
|
||||
|
||||
return (
|
||||
<div
|
||||
role="region"
|
||||
aria-label="Gantt Chart"
|
||||
className="gantt-chart bg-white rounded-lg border border-gray-200 overflow-hidden"
|
||||
style={{ height: `${height}px` }}
|
||||
>
|
||||
<div className="gantt-container flex h-full">
|
||||
{/* Task list column */}
|
||||
<div className="gantt-task-list w-64 border-r border-gray-200 overflow-y-auto flex-shrink-0">
|
||||
<div className="gantt-task-list-header bg-gray-50 p-3 border-b border-gray-200 font-semibold sticky top-0 z-10">
|
||||
Tasks
|
||||
</div>
|
||||
<div className="gantt-task-list-body">
|
||||
{sortedTasks.map((task, index) => {
|
||||
const isPast = isPastTarget(task.endDate);
|
||||
const isApproaching = !isPast && isApproachingTarget(task.endDate);
|
||||
|
||||
return (
|
||||
<div
|
||||
key={task.id}
|
||||
role="row"
|
||||
className={`gantt-task-row p-3 border-b border-gray-100 h-12 flex items-center ${getRowStatusClass(
|
||||
task.status
|
||||
)}`}
|
||||
>
|
||||
<div className="flex-1 min-w-0">
|
||||
<div className="text-sm font-medium text-gray-900 truncate">
|
||||
{task.title}
|
||||
</div>
|
||||
{isPast && task.status !== TaskStatus.COMPLETED && (
|
||||
<div className="text-xs text-amber-600">Target passed</div>
|
||||
)}
|
||||
{isApproaching && task.status !== TaskStatus.COMPLETED && (
|
||||
<div className="text-xs text-orange-600">Approaching target</div>
|
||||
)}
|
||||
</div>
|
||||
</div>
|
||||
);
|
||||
})}
|
||||
</div>
|
||||
</div>
|
||||
|
||||
{/* Timeline column */}
|
||||
<div className="gantt-timeline flex-1 overflow-x-auto overflow-y-auto">
|
||||
<div role="region" aria-label="Timeline" className="gantt-timeline-container min-w-full">
|
||||
{/* Timeline header */}
|
||||
<div className="gantt-timeline-header bg-gray-50 border-b border-gray-200 h-12 sticky top-0 z-10 relative">
|
||||
{timelineLabels.map((label, index) => (
|
||||
<div
|
||||
key={index}
|
||||
className="absolute top-0 bottom-0 flex items-center text-xs text-gray-600 px-2"
|
||||
style={{ left: `${label.position}%` }}
|
||||
>
|
||||
{label.label}
|
||||
</div>
|
||||
))}
|
||||
</div>
|
||||
|
||||
{/* Timeline grid and bars */}
|
||||
<div className="gantt-timeline-body relative">
|
||||
{/* Grid lines */}
|
||||
<div className="gantt-grid absolute inset-0 pointer-events-none">
|
||||
{timelineLabels.map((label, index) => (
|
||||
<div
|
||||
key={index}
|
||||
className="absolute top-0 bottom-0 w-px bg-gray-200"
|
||||
style={{ left: `${label.position}%` }}
|
||||
/>
|
||||
))}
|
||||
</div>
|
||||
|
||||
{/* Task bars */}
|
||||
{sortedTasks.map((task, index) => {
|
||||
const position = calculateBarPosition(task, timelineRange, index);
|
||||
const statusClass = getStatusClass(task.status);
|
||||
|
||||
return (
|
||||
<div
|
||||
key={task.id}
|
||||
role="button"
|
||||
tabIndex={0}
|
||||
aria-label={`Gantt bar for ${task.title}, from ${formatDate(
|
||||
task.startDate
|
||||
)} to ${formatDate(task.endDate)}`}
|
||||
className={`gantt-bar absolute h-8 rounded cursor-pointer transition-all hover:opacity-80 focus:outline-none focus:ring-2 focus:ring-blue-500 ${statusClass}`}
|
||||
style={{
|
||||
left: position.left,
|
||||
width: position.width,
|
||||
top: `${position.top + 8}px`, // Center in row
|
||||
}}
|
||||
onClick={handleTaskClick(task)}
|
||||
onKeyDown={handleKeyDown(task)}
|
||||
>
|
||||
<div className="px-2 text-xs text-white truncate leading-8">
|
||||
{task.title}
|
||||
</div>
|
||||
</div>
|
||||
);
|
||||
})}
|
||||
|
||||
{/* Spacer for scrolling */}
|
||||
<div
|
||||
style={{
|
||||
height: `${sortedTasks.length * 48}px`,
|
||||
}}
|
||||
/>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
{/* CSS for status classes */}
|
||||
<style jsx>{`
|
||||
.gantt-row-completed {
|
||||
background-color: #f0fdf4;
|
||||
}
|
||||
.gantt-row-in-progress {
|
||||
background-color: #eff6ff;
|
||||
}
|
||||
.gantt-row-paused {
|
||||
background-color: #fefce8;
|
||||
}
|
||||
`}</style>
|
||||
</div>
|
||||
);
|
||||
}
|
||||
7
apps/web/src/components/gantt/index.ts
Normal file
7
apps/web/src/components/gantt/index.ts
Normal file
@@ -0,0 +1,7 @@
|
||||
/**
|
||||
* Gantt Chart component exports
|
||||
*/
|
||||
|
||||
export { GanttChart } from "./GanttChart";
|
||||
export type { GanttTask, GanttChartProps, TimelineRange, GanttBarPosition } from "./types";
|
||||
export { toGanttTask, toGanttTasks } from "./types";
|
||||
204
apps/web/src/components/gantt/types.test.ts
Normal file
204
apps/web/src/components/gantt/types.test.ts
Normal file
@@ -0,0 +1,204 @@
|
||||
import { describe, it, expect } from "vitest";
|
||||
import { toGanttTask, toGanttTasks } from "./types";
|
||||
import { TaskStatus, TaskPriority, type Task } from "@mosaic/shared";
|
||||
|
||||
describe("Gantt Types Helpers", () => {
|
||||
const baseDate = new Date("2026-02-01T00:00:00Z");
|
||||
|
||||
const createTask = (overrides: Partial<Task> = {}): Task => ({
|
||||
id: "task-1",
|
||||
workspaceId: "workspace-1",
|
||||
title: "Sample Task",
|
||||
description: null,
|
||||
status: TaskStatus.NOT_STARTED,
|
||||
priority: TaskPriority.MEDIUM,
|
||||
dueDate: new Date("2026-02-15T00:00:00Z"),
|
||||
assigneeId: null,
|
||||
creatorId: "user-1",
|
||||
projectId: null,
|
||||
parentId: null,
|
||||
sortOrder: 0,
|
||||
metadata: {},
|
||||
completedAt: null,
|
||||
createdAt: baseDate,
|
||||
updatedAt: baseDate,
|
||||
...overrides,
|
||||
});
|
||||
|
||||
describe("toGanttTask", () => {
|
||||
it("should convert a Task with metadata.startDate to GanttTask", () => {
|
||||
const task = createTask({
|
||||
metadata: {
|
||||
startDate: "2026-02-05",
|
||||
},
|
||||
dueDate: new Date("2026-02-15"),
|
||||
});
|
||||
|
||||
const ganttTask = toGanttTask(task);
|
||||
|
||||
expect(ganttTask).not.toBeNull();
|
||||
expect(ganttTask?.startDate).toBeInstanceOf(Date);
|
||||
expect(ganttTask?.endDate).toBeInstanceOf(Date);
|
||||
expect(ganttTask?.startDate.getTime()).toBe(new Date("2026-02-05").getTime());
|
||||
expect(ganttTask?.endDate.getTime()).toBe(new Date("2026-02-15").getTime());
|
||||
});
|
||||
|
||||
it("should use createdAt as startDate if metadata.startDate is not provided", () => {
|
||||
const task = createTask({
|
||||
createdAt: new Date("2026-02-01"),
|
||||
dueDate: new Date("2026-02-15"),
|
||||
});
|
||||
|
||||
const ganttTask = toGanttTask(task);
|
||||
|
||||
expect(ganttTask).not.toBeNull();
|
||||
expect(ganttTask?.startDate.getTime()).toBe(new Date("2026-02-01").getTime());
|
||||
});
|
||||
|
||||
it("should use current date as endDate if dueDate is null", () => {
|
||||
const beforeConversion = Date.now();
|
||||
const task = createTask({
|
||||
dueDate: null,
|
||||
metadata: {
|
||||
startDate: "2026-02-01",
|
||||
},
|
||||
});
|
||||
|
||||
const ganttTask = toGanttTask(task);
|
||||
const afterConversion = Date.now();
|
||||
|
||||
expect(ganttTask).not.toBeNull();
|
||||
expect(ganttTask?.endDate.getTime()).toBeGreaterThanOrEqual(beforeConversion);
|
||||
expect(ganttTask?.endDate.getTime()).toBeLessThanOrEqual(afterConversion);
|
||||
});
|
||||
|
||||
it("should extract dependencies from metadata", () => {
|
||||
const task = createTask({
|
||||
metadata: {
|
||||
startDate: "2026-02-01",
|
||||
dependencies: ["task-a", "task-b"],
|
||||
},
|
||||
dueDate: new Date("2026-02-15"),
|
||||
});
|
||||
|
||||
const ganttTask = toGanttTask(task);
|
||||
|
||||
expect(ganttTask).not.toBeNull();
|
||||
expect(ganttTask?.dependencies).toEqual(["task-a", "task-b"]);
|
||||
});
|
||||
|
||||
it("should handle missing dependencies in metadata", () => {
|
||||
const task = createTask({
|
||||
metadata: {
|
||||
startDate: "2026-02-01",
|
||||
},
|
||||
dueDate: new Date("2026-02-15"),
|
||||
});
|
||||
|
||||
const ganttTask = toGanttTask(task);
|
||||
|
||||
expect(ganttTask).not.toBeNull();
|
||||
expect(ganttTask?.dependencies).toBeUndefined();
|
||||
});
|
||||
|
||||
it("should handle non-array dependencies in metadata", () => {
|
||||
const task = createTask({
|
||||
metadata: {
|
||||
startDate: "2026-02-01",
|
||||
dependencies: "not-an-array",
|
||||
},
|
||||
dueDate: new Date("2026-02-15"),
|
||||
});
|
||||
|
||||
const ganttTask = toGanttTask(task);
|
||||
|
||||
expect(ganttTask).not.toBeNull();
|
||||
expect(ganttTask?.dependencies).toBeUndefined();
|
||||
});
|
||||
|
||||
it("should preserve all original task properties", () => {
|
||||
const task = createTask({
|
||||
id: "special-task",
|
||||
title: "Special Task",
|
||||
description: "This is special",
|
||||
status: TaskStatus.IN_PROGRESS,
|
||||
priority: TaskPriority.HIGH,
|
||||
metadata: {
|
||||
startDate: "2026-02-01",
|
||||
},
|
||||
});
|
||||
|
||||
const ganttTask = toGanttTask(task);
|
||||
|
||||
expect(ganttTask).not.toBeNull();
|
||||
expect(ganttTask?.id).toBe("special-task");
|
||||
expect(ganttTask?.title).toBe("Special Task");
|
||||
expect(ganttTask?.description).toBe("This is special");
|
||||
expect(ganttTask?.status).toBe(TaskStatus.IN_PROGRESS);
|
||||
expect(ganttTask?.priority).toBe(TaskPriority.HIGH);
|
||||
});
|
||||
});
|
||||
|
||||
describe("toGanttTasks", () => {
|
||||
it("should convert multiple tasks to GanttTasks", () => {
|
||||
const tasks = [
|
||||
createTask({
|
||||
id: "task-1",
|
||||
metadata: { startDate: "2026-02-01" },
|
||||
dueDate: new Date("2026-02-10"),
|
||||
}),
|
||||
createTask({
|
||||
id: "task-2",
|
||||
metadata: { startDate: "2026-02-11" },
|
||||
dueDate: new Date("2026-02-20"),
|
||||
}),
|
||||
];
|
||||
|
||||
const ganttTasks = toGanttTasks(tasks);
|
||||
|
||||
expect(ganttTasks).toHaveLength(2);
|
||||
expect(ganttTasks[0].id).toBe("task-1");
|
||||
expect(ganttTasks[1].id).toBe("task-2");
|
||||
});
|
||||
|
||||
it("should filter out tasks that cannot be converted", () => {
|
||||
const tasks = [
|
||||
createTask({
|
||||
id: "task-1",
|
||||
metadata: { startDate: "2026-02-01" },
|
||||
dueDate: new Date("2026-02-10"),
|
||||
}),
|
||||
createTask({
|
||||
id: "task-2",
|
||||
metadata: { startDate: "2026-02-11" },
|
||||
dueDate: new Date("2026-02-20"),
|
||||
}),
|
||||
];
|
||||
|
||||
const ganttTasks = toGanttTasks(tasks);
|
||||
|
||||
// All valid tasks should be converted
|
||||
expect(ganttTasks).toHaveLength(2);
|
||||
});
|
||||
|
||||
it("should handle empty array", () => {
|
||||
const ganttTasks = toGanttTasks([]);
|
||||
|
||||
expect(ganttTasks).toEqual([]);
|
||||
});
|
||||
|
||||
it("should maintain order of tasks", () => {
|
||||
const tasks = [
|
||||
createTask({ id: "first", metadata: { startDate: "2026-03-01" } }),
|
||||
createTask({ id: "second", metadata: { startDate: "2026-02-01" } }),
|
||||
createTask({ id: "third", metadata: { startDate: "2026-01-01" } }),
|
||||
];
|
||||
|
||||
const ganttTasks = toGanttTasks(tasks);
|
||||
|
||||
expect(ganttTasks[0].id).toBe("first");
|
||||
expect(ganttTasks[1].id).toBe("second");
|
||||
expect(ganttTasks[2].id).toBe("third");
|
||||
});
|
||||
});
|
||||
});
|
||||
95
apps/web/src/components/gantt/types.ts
Normal file
95
apps/web/src/components/gantt/types.ts
Normal file
@@ -0,0 +1,95 @@
|
||||
/**
|
||||
* Gantt chart types
|
||||
* Extends base Task type with start/end dates for timeline visualization
|
||||
*/
|
||||
|
||||
import type { Task, TaskStatus, TaskPriority } from "@mosaic/shared";
|
||||
|
||||
/**
|
||||
* Extended task type for Gantt chart display
|
||||
* Adds explicit start and end dates required for timeline visualization
|
||||
*/
|
||||
export interface GanttTask extends Task {
|
||||
/** Start date for the task (required for Gantt visualization) */
|
||||
startDate: Date;
|
||||
/** End date for the task (maps to dueDate but explicit for clarity) */
|
||||
endDate: Date;
|
||||
/** Optional array of task IDs that this task depends on */
|
||||
dependencies?: string[];
|
||||
}
|
||||
|
||||
/**
|
||||
* Position and dimensions for a Gantt bar in the timeline
|
||||
*/
|
||||
export interface GanttBarPosition {
|
||||
/** Left offset from timeline start (in pixels or percentage) */
|
||||
left: string;
|
||||
/** Width of the bar (in pixels or percentage) */
|
||||
width: string;
|
||||
/** Top offset for vertical positioning */
|
||||
top: number;
|
||||
}
|
||||
|
||||
/**
|
||||
* Date range for the entire Gantt chart timeline
|
||||
*/
|
||||
export interface TimelineRange {
|
||||
/** Earliest date to display */
|
||||
start: Date;
|
||||
/** Latest date to display */
|
||||
end: Date;
|
||||
/** Total number of days in the range */
|
||||
totalDays: number;
|
||||
}
|
||||
|
||||
/**
|
||||
* Props for the main GanttChart component
|
||||
*/
|
||||
export interface GanttChartProps {
|
||||
/** Tasks to display in the Gantt chart */
|
||||
tasks: GanttTask[];
|
||||
/** Optional callback when a task bar is clicked */
|
||||
onTaskClick?: (task: GanttTask) => void;
|
||||
/** Optional height for the chart container */
|
||||
height?: number;
|
||||
/** Whether to show task dependencies (default: false) */
|
||||
showDependencies?: boolean;
|
||||
}
|
||||
|
||||
/**
|
||||
* Helper to convert a base Task to GanttTask
|
||||
* Uses createdAt as startDate if not in metadata, dueDate as endDate
|
||||
*/
|
||||
export function toGanttTask(task: Task): GanttTask | null {
|
||||
// For Gantt chart, we need both start and end dates
|
||||
const startDate =
|
||||
(task.metadata?.startDate as string | undefined)
|
||||
? new Date(task.metadata.startDate as string)
|
||||
: task.createdAt;
|
||||
|
||||
const endDate = task.dueDate || new Date();
|
||||
|
||||
// Validate dates
|
||||
if (!startDate || !endDate) {
|
||||
return null;
|
||||
}
|
||||
|
||||
return {
|
||||
...task,
|
||||
startDate,
|
||||
endDate,
|
||||
dependencies: Array.isArray(task.metadata?.dependencies)
|
||||
? (task.metadata.dependencies as string[])
|
||||
: undefined,
|
||||
};
|
||||
}
|
||||
|
||||
/**
|
||||
* Helper to get all GanttTasks from an array of Tasks
|
||||
* Filters out tasks that don't have valid date ranges
|
||||
*/
|
||||
export function toGanttTasks(tasks: Task[]): GanttTask[] {
|
||||
return tasks
|
||||
.map(toGanttTask)
|
||||
.filter((task): task is GanttTask => task !== null);
|
||||
}
|
||||
Reference in New Issue
Block a user