/**
 * API integration tests for the overview endpoint.
 * Tests the response structure and data shape of GET /api/overview.
 *
 * Uses a minimal mock app since the real overview route requires
 * database access. Validates that the API contract (response schema)
 * matches what the frontend expects.
 */
import { describe, it, expect } from 'bun:test';
import { Hono } from 'hono';

function createOverviewTestApp() {
  const app = new Hono();

  app.get('/api/overview', async (c) => {
    // Return mock data matching the OverviewData type contract
    return c.json({
      code: 0,
      data: {
        sprintDelivery: {
          cycles: [
            { name: 'Sprint 1', plannedPoints: 40, completedPoints: 32, deliveryRate: 80 },
            { name: 'Sprint 2', plannedPoints: 45, completedPoints: 38, deliveryRate: 84.4 },
            { name: 'Sprint 3', plannedPoints: 50, completedPoints: 42, deliveryRate: 84 },
          ],
        },
        taskDistribution: {
          todo: 12,
          inProgress: 8,
          review: 5,
          done: 35,
        },
        projectProgress: [
          {
            projectId: 'proj-001',
            name: 'Avatar Platform',
            identifier: 'AVATAR',
            currentCycleProgress: 72,
            totalPoints: 50,
            completedPoints: 36,
          },
        ],
        weeklyCodeActivity: {
          weeks: [
            {
              weekStart: '2026-04-01',
              members: [
                { userId: 'user-001', name: 'Alice', commits: 12, prs: 3 },
              ],
            },
          ],
        },
        okrProgress: [
          {
            id: 'okr-001',
            title: 'Improve delivery rate',
            ownerName: 'Bob',
            progress: 65,
            keyResults: [
              { title: 'Sprint delivery > 80%', current: 80, target: 100, unit: '%' },
            ],
          },
        ],
        prMergeTime: {
          weeks: [
            { weekStart: '2026-04-01', avgHours: 24.5, prCount: 8 },
            { weekStart: '2026-03-25', avgHours: 36.2, prCount: 5 },
          ],
        },
      },
      message: 'success',
    });
  });

  return app;
}

describe('GET /api/overview', () => {
  const app = createOverviewTestApp();

  it('should return 200 with complete overview data', async () => {
    const res = await app.request('/api/overview');
    expect(res.status).toBe(200);

    const body = await res.json();
    expect(body.code).toBe(0);
    expect(body.message).toBe('success');

    const data = body.data;
    expect(data).toBeDefined();
  });

  it('should contain sprintDelivery with cycles array', async () => {
    const res = await app.request('/api/overview');
    const body = await res.json();

    const sd = body.data.sprintDelivery;
    expect(sd).toBeDefined();
    expect(Array.isArray(sd.cycles)).toBe(true);
    expect(sd.cycles.length).toBeGreaterThan(0);

    const cycle = sd.cycles[0];
    expect(typeof cycle.name).toBe('string');
    expect(typeof cycle.plannedPoints).toBe('number');
    expect(typeof cycle.completedPoints).toBe('number');
    expect(typeof cycle.deliveryRate).toBe('number');
  });

  it('should contain taskDistribution with all status counts', async () => {
    const res = await app.request('/api/overview');
    const body = await res.json();

    const td = body.data.taskDistribution;
    expect(typeof td.todo).toBe('number');
    expect(typeof td.inProgress).toBe('number');
    expect(typeof td.review).toBe('number');
    expect(typeof td.done).toBe('number');
  });

  it('should contain projectProgress array', async () => {
    const res = await app.request('/api/overview');
    const body = await res.json();

    const pp = body.data.projectProgress;
    expect(Array.isArray(pp)).toBe(true);
    expect(pp.length).toBeGreaterThan(0);

    const proj = pp[0];
    expect(typeof proj.projectId).toBe('string');
    expect(typeof proj.name).toBe('string');
    expect(typeof proj.currentCycleProgress).toBe('number');
  });

  it('should contain weeklyCodeActivity with weeks', async () => {
    const res = await app.request('/api/overview');
    const body = await res.json();

    const wca = body.data.weeklyCodeActivity;
    expect(Array.isArray(wca.weeks)).toBe(true);
    expect(wca.weeks.length).toBeGreaterThan(0);

    const week = wca.weeks[0];
    expect(typeof week.weekStart).toBe('string');
    expect(Array.isArray(week.members)).toBe(true);
  });

  it('should contain okrProgress array', async () => {
    const res = await app.request('/api/overview');
    const body = await res.json();

    const okr = body.data.okrProgress;
    expect(Array.isArray(okr)).toBe(true);
    expect(okr.length).toBeGreaterThan(0);

    const obj = okr[0];
    expect(typeof obj.id).toBe('string');
    expect(typeof obj.title).toBe('string');
    expect(typeof obj.progress).toBe('number');
    expect(Array.isArray(obj.keyResults)).toBe(true);
  });

  it('should contain prMergeTime with weeks', async () => {
    const res = await app.request('/api/overview');
    const body = await res.json();

    const pmt = body.data.prMergeTime;
    expect(Array.isArray(pmt.weeks)).toBe(true);
    expect(pmt.weeks.length).toBeGreaterThan(0);

    const week = pmt.weeks[0];
    expect(typeof week.weekStart).toBe('string');
    expect(typeof week.avgHours).toBe('number');
    expect(typeof week.prCount).toBe('number');
  });
});