/**
 * Settings API Tests – Key/Value settings (Get / Put / Upsert)
 */
import { describe, it, expect, beforeAll, afterAll } from 'vitest';
import type { FastifyInstance } from 'fastify';
import { SqliteAdapter } from '../src/database/SqliteAdapter.js';
import { createServer } from '../src/server.js';

describe('Settings API', () => {
  let app: FastifyInstance;
  let db: SqliteAdapter;

  beforeAll(async () => {
    db = new SqliteAdapter(':memory:');
    await db.init();
    app = await createServer({ db, port: 0 });
    await app.ready();
  });

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

  // ─── Get (missing key → 404) ─────────────────────────

  describe('GET /api/settings/:key', () => {
    it('should return 404 for non-existent setting', async () => {
      const response = await app.inject({
        method: 'GET',
        url: '/api/settings/non-existent-key',
      });
      expect(response.statusCode).toBe(404);
      const body = JSON.parse(response.body);
      expect(body.error).toContain('Setting not found');
    });

    it('should return a setting that was previously set', async () => {
      // First set a value
      await app.inject({
        method: 'PUT',
        url: '/api/settings/test-key',
        payload: { value: 'test-value' },
      });

      const response = await app.inject({
        method: 'GET',
        url: '/api/settings/test-key',
      });
      expect(response.statusCode).toBe(200);
      const body = JSON.parse(response.body);
      expect(body.key).toBe('test-key');
      expect(body.value).toBe('test-value');
      expect(body.updated_at).toBeDefined();
    });
  });

  // ─── Put (upsert) ───────────────────────────────────

  describe('PUT /api/settings/:key', () => {
    it('should create a new setting', async () => {
      const response = await app.inject({
        method: 'PUT',
        url: '/api/settings/new-setting',
        payload: { value: 'new-value' },
      });
      expect(response.statusCode).toBe(200);
      const body = JSON.parse(response.body);
      expect(body.key).toBe('new-setting');
      expect(body.value).toBe('new-value');
      expect(body.updated_at).toBeDefined();
    });

    it('should update an existing setting (upsert)', async () => {
      // Create initial
      await app.inject({
        method: 'PUT',
        url: '/api/settings/upsert-key',
        payload: { value: 'initial' },
      });

      // Update it
      const response = await app.inject({
        method: 'PUT',
        url: '/api/settings/upsert-key',
        payload: { value: 'updated' },
      });
      expect(response.statusCode).toBe(200);
      const body = JSON.parse(response.body);
      expect(body.key).toBe('upsert-key');
      expect(body.value).toBe('updated');

      // Verify via GET
      const getRes = await app.inject({
        method: 'GET',
        url: '/api/settings/upsert-key',
      });
      const getBody = JSON.parse(getRes.body);
      expect(getBody.value).toBe('updated');
    });

    it('should reject setting without value', async () => {
      const response = await app.inject({
        method: 'PUT',
        url: '/api/settings/no-value-key',
        payload: {},
      });
      const body = JSON.parse(response.body);
      expect(body.error).toContain('Value is required');
    });

    it('should handle complex JSON values', async () => {
      const complexValue = JSON.stringify({ nested: { object: true }, array: [1, 2, 3] });
      const response = await app.inject({
        method: 'PUT',
        url: '/api/settings/complex-config',
        payload: { value: complexValue },
      });
      expect(response.statusCode).toBe(200);

      const getRes = await app.inject({
        method: 'GET',
        url: '/api/settings/complex-config',
      });
      const body = JSON.parse(getRes.body);
      expect(body.value).toBe(complexValue);
    });
  });
});