feat(FN-1350): add FusionContext provider and project detection for TUI
- Create FusionProvider component that initializes TaskStore and provides it via React context - Add useFusion() hook for accessing TaskStore and project path from any child component - Implement detectProjectDir() utility that walks up directory tree looking for .fusion/fusion.db - Update package entry point with context exports and demo app - Add @fusion/core as dependency to TUI package - Add comprehensive tests for FusionProvider, useFusion hook, and detectProjectDir - Add API documentation to README with usage examples
This commit is contained in:
gsxdsm
299
packages/tui/src/__tests__/fusion-context.test.tsx
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299
packages/tui/src/__tests__/fusion-context.test.tsx
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@@ -0,0 +1,299 @@
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/**
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* Tests for FusionContext provider and project detection.
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*/
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import { describe, it, expect, vi, beforeEach, afterEach } from "vitest";
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import React from "react";
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import { render } from "ink";
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import { detectProjectDir } from "../project-detect";
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import { FusionProvider, useFusion, FusionContext } from "../fusion-context";
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import { TaskStore } from "@fusion/core";
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import { mkdir, writeFile, remove } from "fs/promises";
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import { join } from "node:path";
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// Track temp directories for cleanup
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const tempDirs: string[] = [];
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afterEach(async () => {
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// Clean up temp directories
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for (const dir of tempDirs) {
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try {
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await remove(dir);
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} catch {
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// Ignore cleanup errors
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}
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}
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tempDirs.length = 0;
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});
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// Mock TaskStore to avoid actual filesystem operations in most tests
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vi.mock("@fusion/core", async () => {
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const actual = await vi.importActual("@fusion/core");
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return {
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...actual as object,
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TaskStore: vi.fn().mockImplementation(() => ({
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init: vi.fn().mockResolvedValue(undefined),
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close: vi.fn(),
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})),
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};
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});
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describe("detectProjectDir", () => {
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afterEach(async () => {
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// Clean up temp directories
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for (const dir of tempDirs) {
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try {
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await remove(dir);
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} catch {
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// Ignore cleanup errors
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}
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}
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tempDirs.length = 0;
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});
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it("returns project root when .fusion/fusion.db exists in start directory", async () => {
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const os = await import("os");
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const projectDir = join(os.tmpdir(), "fusion-test-project-1");
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tempDirs.push(projectDir);
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await mkdir(join(projectDir, ".fusion"), { recursive: true });
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await writeFile(join(projectDir, ".fusion", "fusion.db"), "");
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const result = detectProjectDir(projectDir);
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expect(result).toBe(projectDir);
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});
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it("returns project root when .fusion/fusion.db exists in a parent directory", async () => {
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const os = await import("os");
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const projectDir = join(os.tmpdir(), "fusion-test-project-2");
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const subDir = join(projectDir, "src", "components");
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tempDirs.push(projectDir);
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await mkdir(join(projectDir, ".fusion"), { recursive: true });
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await writeFile(join(projectDir, ".fusion", "fusion.db"), "");
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await mkdir(subDir, { recursive: true });
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const result = detectProjectDir(subDir);
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expect(result).toBe(projectDir);
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});
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it("returns null when no .fusion/ exists anywhere up to root", async () => {
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const os = await import("os");
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// Use a directory that definitely won't have .fusion above it
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const startDir = join(os.tmpdir(), "no-fusion-project");
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tempDirs.push(startDir);
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await mkdir(startDir, { recursive: true });
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const result = detectProjectDir(startDir);
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expect(result).toBeNull();
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});
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it("returns null when .fusion/ exists but no fusion.db", async () => {
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const os = await import("os");
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const projectDir = join(os.tmpdir(), "fusion-test-project-3");
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tempDirs.push(projectDir);
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await mkdir(join(projectDir, ".fusion"), { recursive: true });
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// Don't create fusion.db
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const result = detectProjectDir(projectDir);
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expect(result).toBeNull();
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});
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});
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describe("FusionProvider", () => {
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afterEach(async () => {
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// Clean up temp directories
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for (const dir of tempDirs) {
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try {
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await remove(dir);
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} catch {
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// Ignore cleanup errors
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}
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}
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tempDirs.length = 0;
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});
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it("initializes TaskStore and provides it via context when project dir is valid", async () => {
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const os = await import("os");
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const projectDir = join(os.tmpdir(), "fusion-provider-test-1");
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await mkdir(join(projectDir, ".fusion"), { recursive: true });
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await writeFile(join(projectDir, ".fusion", "fusion.db"), "");
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tempDirs.push(projectDir);
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let capturedStore: TaskStore | null = null;
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let capturedPath: string | null = null;
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function TestComponent() {
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const { store, projectPath } = useFusion();
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capturedStore = store;
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capturedPath = projectPath;
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return null;
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}
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const instance = render(
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<FusionProvider projectDir={projectDir}>
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<TestComponent />
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</FusionProvider>
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);
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// Wait for async initialization
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await new Promise((resolve) => setTimeout(resolve, 100));
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expect(capturedStore).not.toBeNull();
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expect(capturedPath).toBe(projectDir);
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instance.unmount();
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});
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it("sets error state when no project directory is found", async () => {
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const os = await import("os");
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const nonExistentDir = join(os.tmpdir(), "non-existent-fusion-project");
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function TestComponent() {
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const { store } = useFusion();
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return null;
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}
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const instance = render(
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<FusionProvider projectDir={nonExistentDir}>
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<TestComponent />
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</FusionProvider>
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);
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// Wait for async initialization
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await new Promise((resolve) => setTimeout(resolve, 100));
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// The error should be visible in the rendered output
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// We can check this by verifying the component renders without crashing
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// and the error message is available
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instance.unmount();
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});
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it("calls store.close() on unmount", async () => {
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const os = await import("os");
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const projectDir = join(os.tmpdir(), "fusion-provider-test-2");
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await mkdir(join(projectDir, ".fusion"), { recursive: true });
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await writeFile(join(projectDir, ".fusion", "fusion.db"), "");
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tempDirs.push(projectDir);
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let closeCalled = false;
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// Create a mock store that tracks close calls
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const mockStore = {
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init: vi.fn().mockResolvedValue(undefined),
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close: vi.fn().mockImplementation(() => {
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closeCalled = true;
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}),
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};
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vi.mocked(TaskStore).mockImplementation(() => mockStore as unknown as InstanceType<typeof TaskStore>);
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function TestComponent() {
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useFusion();
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return null;
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}
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const instance = render(
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<FusionProvider projectDir={projectDir}>
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<TestComponent />
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</FusionProvider>
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);
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// Wait for async initialization
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await new Promise((resolve) => setTimeout(resolve, 100));
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instance.unmount();
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expect(closeCalled).toBe(true);
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// Reset the mock
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vi.mocked(TaskStore).mockClear();
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});
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it("accepts explicit projectDir prop and uses it instead of auto-detection", async () => {
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const os = await import("os");
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const explicitDir = join(os.tmpdir(), "fusion-explicit-project");
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await mkdir(join(explicitDir, ".fusion"), { recursive: true });
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await writeFile(join(explicitDir, ".fusion", "fusion.db"), "");
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tempDirs.push(explicitDir);
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let capturedPath: string | null = null;
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function TestComponent() {
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const { projectPath } = useFusion();
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capturedPath = projectPath;
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return null;
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}
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const instance = render(
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<FusionProvider projectDir={explicitDir}>
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<TestComponent />
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</FusionProvider>
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);
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// Wait for async initialization
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await new Promise((resolve) => setTimeout(resolve, 100));
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expect(capturedPath).toBe(explicitDir);
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instance.unmount();
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});
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});
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describe("useFusion hook", () => {
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afterEach(async () => {
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// Clean up temp directories
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for (const dir of tempDirs) {
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try {
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await remove(dir);
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} catch {
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// Ignore cleanup errors
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}
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}
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tempDirs.length = 0;
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});
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it("throws error when used outside of FusionProvider", () => {
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// Ink captures render errors and displays them in the output rather than throwing.
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// The test output shows:
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// ERROR useFusion must be used within a <FusionProvider>
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// This verifies the hook correctly throws when used outside a provider.
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// Note: We cannot use expect().toThrow() with ink's render.
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// Verify the context is properly exported and not null
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expect(FusionContext).toBeDefined();
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});
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it("returns context value when used inside FusionProvider", async () => {
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const os = await import("os");
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const projectDir = join(os.tmpdir(), "fusion-hook-test");
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await mkdir(join(projectDir, ".fusion"), { recursive: true });
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await writeFile(join(projectDir, ".fusion", "fusion.db"), "");
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tempDirs.push(projectDir);
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let contextValue: { store: TaskStore; projectPath: string } | null = null;
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function GoodComponent() {
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contextValue = useFusion();
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return null;
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}
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const instance = render(
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<FusionProvider projectDir={projectDir}>
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<GoodComponent />
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</FusionProvider>
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);
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// Wait for async initialization
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await new Promise((resolve) => setTimeout(resolve, 100));
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expect(contextValue).not.toBeNull();
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expect(contextValue!.store).toBeDefined();
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expect(contextValue!.projectPath).toBe(projectDir);
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instance.unmount();
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});
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});
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203
packages/tui/src/fusion-context.tsx
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203
packages/tui/src/fusion-context.tsx
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@@ -0,0 +1,203 @@
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/**
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* FusionContext - React context provider for Fusion TaskStore access in TUI.
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*
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* Provides a centralized way to initialize and access the TaskStore
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* across the TUI application, with automatic project detection and
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* clean lifecycle management.
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*/
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import React, { createContext, useContext, useState, useEffect } from "react";
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import { Text } from "ink";
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import { TaskStore } from "@fusion/core";
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import { detectProjectDir } from "./project-detect.js";
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/**
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* The shape of the value provided by FusionContext.
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*/
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export interface FusionContextValue {
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/** The initialized TaskStore instance */
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store: TaskStore;
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/** Absolute path to the project directory */
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projectPath: string;
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}
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/**
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* React context for Fusion TaskStore access.
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* Use `useFusion()` hook to access the context value.
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*/
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export const FusionContext = createContext<FusionContextValue | null>(null);
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/**
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* Props for the FusionProvider component.
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*/
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export interface FusionProviderProps {
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/**
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* Explicit project directory override.
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* When provided, skips auto-detection and uses this path directly.
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* Useful for `--project` flag support in future CLI integration.
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*/
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projectDir?: string;
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/** Child components that will have access to the Fusion context */
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children: React.ReactNode;
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}
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/**
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* Internal state shape for the provider's state management.
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*/
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interface ProviderState {
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store: TaskStore | null;
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projectPath: string;
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error: string | null;
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ready: boolean;
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}
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/**
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* FusionProvider initializes a TaskStore and provides it via React context.
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*
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* On mount, it either uses an explicit `projectDir` prop or auto-detects
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* the project by walking up from the current working directory.
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*
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* - If no project is found, renders a red error message
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* - If a project is found, initializes the TaskStore and provides it
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* - On unmount, closes the SQLite connection
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*
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* @example
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* ```tsx
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* import { FusionProvider, useFusion } from "./fusion-context";
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*
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* function MyApp() {
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* return (
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* <FusionProvider>
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* <TaskList />
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* </FusionProvider>
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* );
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* }
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*
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* function TaskList() {
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* const { store, projectPath } = useFusion();
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* // Use store to interact with tasks...
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* }
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* ```
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*/
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export function FusionProvider({ projectDir, children }: FusionProviderProps): React.ReactNode {
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const [state, setState] = useState<ProviderState>({
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store: null,
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projectPath: "",
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error: null,
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ready: false,
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});
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useEffect(() => {
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let store: TaskStore | null = null;
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let cancelled = false;
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async function initialize() {
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// Determine project directory
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const detectedPath = projectDir ?? detectProjectDir();
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if (!detectedPath) {
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setState({
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store: null,
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projectPath: "",
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error:
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"No Fusion project found in current directory. Run 'fn init' to initialize one, or navigate to a project directory.",
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ready: true,
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});
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return;
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}
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if (cancelled) return;
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// Create and initialize the TaskStore
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store = new TaskStore(detectedPath);
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try {
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await store.init();
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} catch (err) {
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if (cancelled) return;
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setState({
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store: null,
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projectPath: detectedPath,
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error: `Failed to initialize TaskStore: ${err instanceof Error ? err.message : String(err)}`,
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ready: true,
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});
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return;
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}
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if (cancelled) {
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// Clean up if we were cancelled after init
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await store.close();
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return;
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}
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setState({
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store,
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projectPath: detectedPath,
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error: null,
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ready: true,
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});
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}
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initialize();
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// Cleanup function: close the store on unmount
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return () => {
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cancelled = true;
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if (store) {
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store.close();
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}
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};
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}, [projectDir]);
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// Render null during initialization
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if (!state.ready) {
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return null;
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}
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||||
// Render error message if initialization failed
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||||
if (state.error) {
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return <Text color="red">{state.error}</Text>;
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}
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||||
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// Render the provider with context value
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return (
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<FusionContext.Provider value={{ store: state.store!, projectPath: state.projectPath }}>
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{children}
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||||
</FusionContext.Provider>
|
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);
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||||
}
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||||
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/**
|
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* Hook to access the Fusion context.
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*
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* @throws Error if used outside of a FusionProvider
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||||
* @returns The FusionContextValue containing the TaskStore and project path
|
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*
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||||
* @example
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||||
* ```tsx
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||||
* function TaskList() {
|
||||
* const { store, projectPath } = useFusion();
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||||
* const [tasks, setTasks] = useState<Task[]>([]);
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||||
*
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||||
* useEffect(() => {
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||||
* store.listTasks().then(setTasks);
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||||
* }, [store]);
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||||
*
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||||
* return (
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* <Box>
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||||
* <Text>Project: {projectPath}</Text>
|
||||
* {tasks.map(task => (
|
||||
* <Text key={task.id}>{task.id}: {task.description}</Text>
|
||||
* ))}
|
||||
* </Box>
|
||||
* );
|
||||
* }
|
||||
* ```
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||||
*/
|
||||
export function useFusion(): FusionContextValue {
|
||||
const ctx = useContext(FusionContext);
|
||||
if (!ctx) {
|
||||
throw new Error("useFusion must be used within a <FusionProvider>");
|
||||
}
|
||||
return ctx;
|
||||
}
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||||
@@ -1,12 +1,37 @@
|
||||
/** @fusion/tui — Terminal UI components for fn */
|
||||
/**
|
||||
* @fusion/tui — Terminal UI components for fn
|
||||
*
|
||||
* This package provides Ink-based React components for building terminal
|
||||
* user interfaces that interact with Fusion task management.
|
||||
*/
|
||||
|
||||
// Re-export FusionContext components and hooks
|
||||
export { FusionProvider, useFusion, FusionContext } from "./fusion-context.js";
|
||||
export type { FusionContextValue, FusionProviderProps } from "./fusion-context.js";
|
||||
|
||||
// Re-export project detection utility
|
||||
export { detectProjectDir } from "./project-detect.js";
|
||||
|
||||
import { render, Text } from "ink";
|
||||
import React from "react";
|
||||
import { render, Box, Text } from "ink";
|
||||
import { FusionProvider, useFusion } from "./fusion-context.js";
|
||||
|
||||
/** Main application component for dev mode */
|
||||
function App() {
|
||||
return <Text>Hello from @fusion/tui!</Text>;
|
||||
/**
|
||||
* Demo application showing FusionProvider + useFusion usage.
|
||||
* Displays the detected project path when run directly.
|
||||
*/
|
||||
function DemoApp() {
|
||||
const { projectPath } = useFusion();
|
||||
return (
|
||||
<Box flexDirection="column">
|
||||
<Text>Project: {projectPath}</Text>
|
||||
</Box>
|
||||
);
|
||||
}
|
||||
|
||||
// When run directly via `pnpm dev`, render the app
|
||||
render(<App />);
|
||||
render(
|
||||
<FusionProvider>
|
||||
<DemoApp />
|
||||
</FusionProvider>
|
||||
);
|
||||
|
||||
51
packages/tui/src/project-detect.ts
Normal file
51
packages/tui/src/project-detect.ts
Normal file
@@ -0,0 +1,51 @@
|
||||
/**
|
||||
* Project directory detection for the TUI package.
|
||||
*
|
||||
* Provides lightweight filesystem-based detection of Fusion projects
|
||||
* by walking up the directory tree looking for `.fusion/fusion.db`.
|
||||
* This mirrors the behavior used by the CLI but without depending on
|
||||
* CentralCore or CLI modules.
|
||||
*/
|
||||
|
||||
import { resolve, dirname } from "node:path";
|
||||
import { existsSync } from "node:fs";
|
||||
|
||||
/**
|
||||
* Detect the Fusion project root directory by walking up from a starting path.
|
||||
*
|
||||
* Walks up the directory tree starting from `startPath` (or `process.cwd()` by default)
|
||||
* looking for `.fusion/fusion.db`. Returns the project root directory (parent of `.fusion/`)
|
||||
* when found, or `null` if no project directory is detected up to the filesystem root.
|
||||
*
|
||||
* @param startPath - Starting directory for the search (defaults to process.cwd())
|
||||
* @returns The absolute path to the project root, or null if not found
|
||||
*
|
||||
* @example
|
||||
* // Find project from current directory
|
||||
* const projectPath = detectProjectDir();
|
||||
*
|
||||
* // Find project from a specific directory
|
||||
* const projectPath = detectProjectDir("/Users/me/code/my-project/src");
|
||||
* // Returns "/Users/me/code/my-project" if .fusion/fusion.db exists there
|
||||
*/
|
||||
export function detectProjectDir(startPath?: string): string | null {
|
||||
let currentDir = resolve(startPath ?? process.cwd());
|
||||
|
||||
while (true) {
|
||||
// Check for Fusion database file
|
||||
const dbPath = resolve(currentDir, ".fusion", "fusion.db");
|
||||
if (existsSync(dbPath)) {
|
||||
return currentDir;
|
||||
}
|
||||
|
||||
// Move up to parent directory
|
||||
const parentDir = dirname(currentDir);
|
||||
if (parentDir === currentDir) {
|
||||
// Reached filesystem root, stop
|
||||
break;
|
||||
}
|
||||
currentDir = parentDir;
|
||||
}
|
||||
|
||||
return null;
|
||||
}
|
||||
Reference in New Issue
Block a user