import { describe, it, expect, beforeAll, afterAll } from 'vitest';
import { buildServer } from '../../src/index.js';
import { users, agents, agentGroups, agentGroupMembers, agentJobs, teams } from '../../src/db/schema.js';
import { sql, eq } from 'drizzle-orm';

describe('Agent API', () => {
  let server: Awaited<ReturnType<typeof buildServer>>;
  let user1Id: string;
  let user2Id: string;
  let teamId: string;
  let agent1Id: string;
  let agent2Id: string;

  beforeAll(async () => {
    server = await buildServer();

    // Clean up leftover test data
    await server.db.execute(sql`DELETE FROM agent_group_members WHERE group_id IN (SELECT id FROM agent_groups WHERE user_id IN (SELECT id FROM users WHERE clerk_id LIKE 'agtest_%'))`);
    await server.db.execute(sql`DELETE FROM agent_jobs WHERE user_id IN (SELECT id FROM users WHERE clerk_id LIKE 'agtest_%')`);
    await server.db.execute(sql`DELETE FROM agent_groups WHERE user_id IN (SELECT id FROM users WHERE clerk_id LIKE 'agtest_%')`);
    await server.db.execute(sql`DELETE FROM agents WHERE user_id IN (SELECT id FROM users WHERE clerk_id LIKE 'agtest_%')`);
    await server.db.execute(sql`DELETE FROM team_members WHERE team_id IN (SELECT id FROM teams WHERE slug LIKE 'agtest-%')`);
    await server.db.execute(sql`DELETE FROM team_capability_requests WHERE team_id IN (SELECT id FROM teams WHERE slug LIKE 'agtest-%')`);
    await server.db.execute(sql`DELETE FROM team_capability_overrides WHERE team_id IN (SELECT id FROM teams WHERE slug LIKE 'agtest-%')`);
    await server.db.execute(sql`DELETE FROM team_capability_policies WHERE team_id IN (SELECT id FROM teams WHERE slug LIKE 'agtest-%')`);
    await server.db.execute(sql`DELETE FROM teams WHERE slug LIKE 'agtest-%'`);
    await server.db.execute(sql`DELETE FROM users WHERE clerk_id LIKE 'agtest_%'`);

    // Create test users
    const [u1] = await server.db.insert(users).values({
      clerkId: 'agtest_user1',
      displayName: 'Agent User 1',
      email: 'agentuser1@test.com',
    }).returning();
    user1Id = u1.id;

    const [u2] = await server.db.insert(users).values({
      clerkId: 'agtest_user2',
      displayName: 'Agent User 2',
      email: 'agentuser2@test.com',
    }).returning();
    user2Id = u2.id;

    // Create a team for job tests
    const [team] = await server.db.insert(teams).values({
      name: 'Agent Test Team',
      slug: 'agtest-team',
      ownerId: user1Id,
    }).returning();
    teamId = team.id;

    // Override auth handler for tests
    server._authHandler.fn = async function (request, reply) {
      const testUserId = request.headers['x-test-user-id'] as string;
      if (!testUserId) {
        return reply.code(401).send({ error: 'Missing x-test-user-id header' });
      }
      request.userId = testUserId;
      request.clerkId = 'test';
    };
  });

  afterAll(async () => {
    await server.db.execute(sql`DELETE FROM agent_group_members WHERE group_id IN (SELECT id FROM agent_groups WHERE user_id IN (SELECT id FROM users WHERE clerk_id LIKE 'agtest_%'))`);
    await server.db.execute(sql`DELETE FROM agent_jobs WHERE user_id IN (SELECT id FROM users WHERE clerk_id LIKE 'agtest_%')`);
    await server.db.execute(sql`DELETE FROM agent_groups WHERE user_id IN (SELECT id FROM users WHERE clerk_id LIKE 'agtest_%')`);
    await server.db.execute(sql`DELETE FROM agents WHERE user_id IN (SELECT id FROM users WHERE clerk_id LIKE 'agtest_%')`);
    await server.db.execute(sql`DELETE FROM team_members WHERE team_id IN (SELECT id FROM teams WHERE slug LIKE 'agtest-%')`);
    await server.db.execute(sql`DELETE FROM team_capability_requests WHERE team_id IN (SELECT id FROM teams WHERE slug LIKE 'agtest-%')`);
    await server.db.execute(sql`DELETE FROM team_capability_overrides WHERE team_id IN (SELECT id FROM teams WHERE slug LIKE 'agtest-%')`);
    await server.db.execute(sql`DELETE FROM team_capability_policies WHERE team_id IN (SELECT id FROM teams WHERE slug LIKE 'agtest-%')`);
    await server.db.execute(sql`DELETE FROM teams WHERE slug LIKE 'agtest-%'`);
    await server.db.execute(sql`DELETE FROM users WHERE clerk_id LIKE 'agtest_%'`);
    await server.close();
  });

  it('creates an agent with custom model, tools, and system prompt', async () => {
    const response = await server.inject({
      method: 'POST',
      url: '/api/agents',
      headers: { 'x-test-user-id': user1Id },
      payload: {
        name: 'Research Agent',
        role: 'researcher',
        systemPrompt: 'You are a research agent.',
        model: 'claude-sonnet-4-20250514',
        tools: ['web_search', 'read_file'],
        config: { maxTokens: 4096 },
      },
    });

    expect(response.statusCode).toBe(201);
    const body = JSON.parse(response.body);
    expect(body.name).toBe('Research Agent');
    expect(body.role).toBe('researcher');
    expect(body.systemPrompt).toBe('You are a research agent.');
    expect(body.model).toBe('claude-sonnet-4-20250514');
    expect(body.tools).toEqual(['web_search', 'read_file']);
    expect(body.config).toEqual({ maxTokens: 4096 });
    expect(body.userId).toBe(user1Id);
    agent1Id = body.id;
  });

  it('creates a second agent for user1', async () => {
    const response = await server.inject({
      method: 'POST',
      url: '/api/agents',
      headers: { 'x-test-user-id': user1Id },
      payload: {
        name: 'Coding Agent',
        model: 'claude-haiku-4-5',
        tools: ['execute_code'],
      },
    });

    expect(response.statusCode).toBe(201);
    agent2Id = JSON.parse(response.body).id;
  });

  it('lists agents returns only the user\'s agents', async () => {
    // Create an agent for user2
    await server.inject({
      method: 'POST',
      url: '/api/agents',
      headers: { 'x-test-user-id': user2Id },
      payload: { name: 'User2 Agent' },
    });

    const response = await server.inject({
      method: 'GET',
      url: '/api/agents',
      headers: { 'x-test-user-id': user1Id },
    });

    expect(response.statusCode).toBe(200);
    const body = JSON.parse(response.body);
    expect(Array.isArray(body)).toBe(true);
    expect(body.length).toBe(2);
    expect(body.every((a: { userId: string }) => a.userId === user1Id)).toBe(true);
  });

  it('updates agent model and config', async () => {
    const response = await server.inject({
      method: 'PATCH',
      url: `/api/agents/${agent1Id}`,
      headers: { 'x-test-user-id': user1Id },
      payload: {
        model: 'claude-haiku-4-5',
        config: { maxTokens: 2048, temperature: 0.7 },
      },
    });

    expect(response.statusCode).toBe(200);
    const body = JSON.parse(response.body);
    expect(body.model).toBe('claude-haiku-4-5');
    expect(body.config).toEqual({ maxTokens: 2048, temperature: 0.7 });
  });

  it('user cannot update another user\'s agent', async () => {
    const response = await server.inject({
      method: 'PATCH',
      url: `/api/agents/${agent1Id}`,
      headers: { 'x-test-user-id': user2Id },
      payload: { model: 'hacked-model' },
    });

    expect(response.statusCode).toBe(403);
  });

  it('user cannot delete another user\'s agent', async () => {
    const response = await server.inject({
      method: 'DELETE',
      url: `/api/agents/${agent1Id}`,
      headers: { 'x-test-user-id': user2Id },
    });

    expect(response.statusCode).toBe(403);
  });

  it('creates an agent group with parallel strategy and 2 members', async () => {
    const response = await server.inject({
      method: 'POST',
      url: '/api/agent-groups',
      headers: { 'x-test-user-id': user1Id },
      payload: {
        name: 'Research Squad',
        description: 'Parallel research team',
        strategy: 'parallel',
        members: [
          { agentId: agent1Id, roleInGroup: 'worker', executionOrder: 0 },
          { agentId: agent2Id, roleInGroup: 'worker', executionOrder: 0 },
        ],
      },
    });

    expect(response.statusCode).toBe(201);
    const body = JSON.parse(response.body);
    expect(body.name).toBe('Research Squad');
    expect(body.strategy).toBe('parallel');
    expect(body.members).toHaveLength(2);
  });

  it('creates a group with coordinator strategy and a lead agent', async () => {
    const response = await server.inject({
      method: 'POST',
      url: '/api/agent-groups',
      headers: { 'x-test-user-id': user1Id },
      payload: {
        name: 'Coordinated Team',
        strategy: 'coordinator',
        members: [
          { agentId: agent1Id, roleInGroup: 'lead', executionOrder: 0 },
          { agentId: agent2Id, roleInGroup: 'worker', executionOrder: 1 },
        ],
      },
    });

    expect(response.statusCode).toBe(201);
    const body = JSON.parse(response.body);
    expect(body.strategy).toBe('coordinator');
    const lead = body.members.find((m: { roleInGroup: string; agentId: string }) => m.roleInGroup === 'lead');
    expect(lead).toBeDefined();
    expect(lead.agentId).toBe(agent1Id);
  });

  it('gets group with members', async () => {
    // List groups to get an ID
    const listResponse = await server.inject({
      method: 'GET',
      url: '/api/agent-groups',
      headers: { 'x-test-user-id': user1Id },
    });

    expect(listResponse.statusCode).toBe(200);
    const groups = JSON.parse(listResponse.body);
    expect(groups.length).toBeGreaterThanOrEqual(2);

    const groupId = groups[0].id;
    const response = await server.inject({
      method: 'GET',
      url: `/api/agent-groups/${groupId}`,
      headers: { 'x-test-user-id': user1Id },
    });

    expect(response.statusCode).toBe(200);
    const body = JSON.parse(response.body);
    expect(body.id).toBe(groupId);
    expect(body.members).toBeDefined();
    expect(Array.isArray(body.members)).toBe(true);
  });

  it('executes group run — queues a job and returns 202 with jobId', async () => {
    const listResponse = await server.inject({
      method: 'GET',
      url: '/api/agent-groups',
      headers: { 'x-test-user-id': user1Id },
    });
    const groups = JSON.parse(listResponse.body);
    const groupId = groups[0].id;

    const response = await server.inject({
      method: 'POST',
      url: `/api/agent-groups/${groupId}/run`,
      headers: { 'x-test-user-id': user1Id },
      payload: {
        task: 'Research the latest AI papers',
        teamId,
      },
    });

    expect(response.statusCode).toBe(202);
    const body = JSON.parse(response.body);
    expect(body.jobId).toBeDefined();
    expect(typeof body.jobId).toBe('string');

    // Verify the job was created in the database
    const [job] = await server.db
      .select()
      .from(agentJobs)
      .where(eq(agentJobs.id, body.jobId))
      .limit(1);
    expect(job).toBeDefined();
    expect(job.status).toBe('queued');
    expect(job.jobType).toBe('group');
    expect(job.userId).toBe(user1Id);
  });

  it('deletes an agent', async () => {
    const response = await server.inject({
      method: 'DELETE',
      url: `/api/agents/${agent2Id}`,
      headers: { 'x-test-user-id': user1Id },
    });

    expect(response.statusCode).toBe(204);

    // Verify it's gone
    const listResponse = await server.inject({
      method: 'GET',
      url: '/api/agents',
      headers: { 'x-test-user-id': user1Id },
    });
    const remaining = JSON.parse(listResponse.body);
    const ids = remaining.map((a: { id: string }) => a.id);
    expect(ids).not.toContain(agent2Id);
  });
});