/**
 * Tests for note-prompts module — CRUD + run + seed + reading-time.
 */

import { afterAll, beforeAll, beforeEach, describe, expect, it, vi } from 'vitest';
import type { FastifyInstance } from 'fastify';

const { extractAuthMock } = vi.hoisted(() => ({
  extractAuthMock: vi.fn(async () => ({ sub: 'user_1', type: 'access', role: 'editor' })),
}));

vi.mock('../../lib/auth.js', () => ({ extractAuth: extractAuthMock, requireWriter: extractAuthMock }));
vi.mock('../../lib/product-config.js', () => ({
  PRODUCT_ID: 'notelett',
  DISPLAY_NAME: 'NoteLett',
  productConfig: { productId: 'notelett', displayName: 'NoteLett' },
}));
vi.mock('../../lib/request-context.js', () => ({
  getUserId: vi.fn(() => 'user_1'),
  getRequestProductId: vi.fn(() => 'notelett'),
}));
vi.mock('../../lib/telemetry.js', () => ({ trackEvent: vi.fn() }));
vi.mock('../../lib/feature-flags.js', () => ({ isFeatureEnabled: vi.fn(() => true) }));
vi.mock('../../lib/field-encrypt.js', () => ({
  initEncryption: vi.fn(),
  getEncryptor: vi.fn(() => ({
    encrypt: vi.fn(async (v: unknown) => v),
    decrypt: vi.fn(async (v: unknown) => v),
  })),
}));
vi.mock('../../lib/llm.js', () => ({
  llm: vi.fn(() => ({
    isConfigured: () => true,
    chatCompletion: vi.fn(async () => ({
      content: 'Mock LLM response',
      model: 'mock-model',
      usage: { promptTokens: 10, completionTokens: 10, totalTokens: 20 },
      finishReason: 'stop',
    })),
  })),
  initLLM: vi.fn(),
}));
vi.mock('@bytelyst/llm', () => ({
  getLLM: vi.fn(),
  setLLM: vi.fn(),
  createLLMProvider: vi.fn(),
  buildVisionMessage: vi.fn((text: string, url: string) => ({
    role: 'user',
    content: [{ type: 'text', text }, { type: 'image_url', image_url: { url, detail: 'auto' } }],
  })),
  hasVisionContent: vi.fn(() => false),
  isVisionMessage: vi.fn(() => false),
  getMessageText: vi.fn((msg: { content: string }) => typeof msg.content === 'string' ? msg.content : ''),
}));

import { buildTestApp, resetMemoryDatastore } from '../../test-helpers.js';
import { notePromptRoutes } from './routes.js';
import { noteRoutes } from '../notes/routes.js';
import { getBuiltinTemplates } from './seed.js';
import { upsertBuiltinTemplate } from './repository.js';

let app: FastifyInstance;

beforeAll(async () => {
  app = await buildTestApp(async (fastify) => {
    await noteRoutes(fastify);
    await notePromptRoutes(fastify);
  });
});

afterAll(async () => {
  await app.close();
});

async function seedBuiltins() {
  for (const t of getBuiltinTemplates()) {
    await upsertBuiltinTemplate(t);
  }
}

describe('note-prompts CRUD', () => {
  beforeEach(() => {
    resetMemoryDatastore();
  });

  it('GET /note-prompts — lists builtins', async () => {
    await seedBuiltins();
    const res = await app.inject({ method: 'GET', url: '/api/note-prompts' });
    expect(res.statusCode).toBe(200);
    const body = res.json();
    expect(body.items.length).toBeGreaterThan(0);
    expect(body.items.some((t: { isBuiltin: boolean }) => t.isBuiltin)).toBe(true);
  });

  it('GET /note-prompts?category=transform — filters by category', async () => {
    await seedBuiltins();
    const res = await app.inject({ method: 'GET', url: '/api/note-prompts?category=transform' });
    expect(res.statusCode).toBe(200);
    const body = res.json();
    expect(body.items.every((t: { category: string }) => t.category === 'transform')).toBe(true);
  });

  it('POST /note-prompts — creates custom template', async () => {
    const res = await app.inject({
      method: 'POST',
      url: '/api/note-prompts',
      payload: {
        slug: 'my-custom-prompt',
        name: 'My Custom Prompt',
        systemPrompt: 'You are a helpful assistant.',
        userPromptTemplate: 'Do something with: {{noteBody}}',
        category: 'transform',
        inputType: 'text',
        outputType: 'replace',
      },
    });
    expect(res.statusCode).toBe(201);
    const body = res.json();
    expect(body.slug).toBe('my-custom-prompt');
    expect(body.isBuiltin).toBe(false);
    expect(body.productId).toBe('notelett');
  });

  it('PATCH + DELETE custom template lifecycle', async () => {
    // create
    const createRes = await app.inject({
      method: 'POST',
      url: '/api/note-prompts',
      payload: {
        slug: 'lifecycle-test',
        name: 'Lifecycle',
        systemPrompt: 'sys',
        userPromptTemplate: '{{noteBody}}',
      },
    });
    const id = createRes.json().id;

    // update
    const patchRes = await app.inject({
      method: 'PATCH',
      url: `/api/note-prompts/${id}`,
      payload: { name: 'Updated Name' },
    });
    expect(patchRes.statusCode).toBe(200);
    expect(patchRes.json().name).toBe('Updated Name');

    // delete
    const delRes = await app.inject({ method: 'DELETE', url: `/api/note-prompts/${id}` });
    expect(delRes.statusCode).toBe(204);
  });

  it('PATCH builtin returns 404', async () => {
    await seedBuiltins();
    const res = await app.inject({
      method: 'PATCH',
      url: '/api/note-prompts/builtin-summarize',
      payload: { name: 'Hacked' },
    });
    expect(res.statusCode).toBe(404);
  });

  it('DELETE builtin returns 404', async () => {
    await seedBuiltins();
    const res = await app.inject({ method: 'DELETE', url: '/api/note-prompts/builtin-summarize' });
    expect(res.statusCode).toBe(404);
  });
});

describe('note-prompts run', () => {
  beforeEach(() => {
    resetMemoryDatastore();
  });

  it('POST /note-prompts/run — runs builtin template', async () => {
    await seedBuiltins();
    // Create a note first
    const noteRes = await app.inject({
      method: 'POST',
      url: '/api/notes',
      payload: { id: 'n1', workspaceId: 'ws1', title: 'Test', body: 'Test content about AI.' },
    });
    expect(noteRes.statusCode).toBe(201);

    const res = await app.inject({
      method: 'POST',
      url: '/api/note-prompts/run',
      payload: { templateId: 'builtin-summarize', noteId: 'n1', workspaceId: 'ws1' },
    });
    expect(res.statusCode).toBe(200);
    const body = res.json();
    expect(body.content).toBeTruthy();
    expect(body.templateSlug).toBe('summarize');
    expect(body.outputType).toBe('new_note');
    expect(body.usage).toBeDefined();
  });

  it('POST /note-prompts/run — resolves by slug', async () => {
    await seedBuiltins();
    await app.inject({
      method: 'POST',
      url: '/api/notes',
      payload: { id: 'n2', workspaceId: 'ws2', title: 'Test', body: 'Bullet content.' },
    });

    const res = await app.inject({
      method: 'POST',
      url: '/api/note-prompts/run',
      payload: { templateId: 'bulletize', noteId: 'n2', workspaceId: 'ws2' },
    });
    expect(res.statusCode).toBe(200);
    expect(res.json().templateSlug).toBe('bulletize');
  });

  it('POST /note-prompts/run — 404 for unknown template', async () => {
    await app.inject({
      method: 'POST',
      url: '/api/notes',
      payload: { id: 'n3', workspaceId: 'ws3', title: 'T', body: 'B' },
    });

    const res = await app.inject({
      method: 'POST',
      url: '/api/note-prompts/run',
      payload: { templateId: 'nonexistent', noteId: 'n3', workspaceId: 'ws3' },
    });
    expect(res.statusCode).toBe(404);
  });

  it('POST /note-prompts/run — 404 for unknown note', async () => {
    await seedBuiltins();
    const res = await app.inject({
      method: 'POST',
      url: '/api/note-prompts/run',
      payload: { templateId: 'builtin-summarize', noteId: 'nonexistent', workspaceId: 'ws-x' },
    });
    expect(res.statusCode).toBe(404);
  });
});

describe('reading-time', () => {
  beforeEach(() => {
    resetMemoryDatastore();
  });

  it('GET /notes/:id/reading-time — returns word count and reading time', async () => {
    await app.inject({
      method: 'POST',
      url: '/api/notes',
      payload: { id: 'rt1', workspaceId: 'ws-rt', title: 'Long', body: Array(500).fill('word').join(' ') },
    });

    const res = await app.inject({
      method: 'GET',
      url: '/api/notes/rt1/reading-time?workspaceId=ws-rt',
    });
    expect(res.statusCode).toBe(200);
    const body = res.json();
    expect(body.wordCount).toBe(500);
    expect(body.readingTimeMinutes).toBe(3); // ceil(500/238)
  });

  it('GET /notes/:id/reading-time — 400 without workspaceId', async () => {
    await app.inject({
      method: 'POST',
      url: '/api/notes',
      payload: { id: 'rt2', workspaceId: 'ws-rt2', title: 'X', body: 'Y' },
    });

    const res = await app.inject({ method: 'GET', url: '/api/notes/rt2/reading-time' });
    expect(res.statusCode).toBe(400);
  });
});

describe('seed', () => {
  it('getBuiltinTemplates returns 27 templates', () => {
    const templates = getBuiltinTemplates();
    expect(templates.length).toBe(27);
    expect(templates.every((t) => t.isBuiltin)).toBe(true);
    expect(templates.every((t) => t.id.startsWith('builtin-'))).toBe(true);
  });

  it('all slugs are unique', () => {
    const templates = getBuiltinTemplates();
    const slugs = templates.map((t) => t.slug);
    expect(new Set(slugs).size).toBe(slugs.length);
  });

  it('all categories are valid', () => {
    const validCategories = ['transform', 'extract', 'generate', 'analyze', 'export'];
    const templates = getBuiltinTemplates();
    expect(templates.every((t) => validCategories.includes(t.category))).toBe(true);
  });
});