// Load-bearing: registers shared vi.mock / beforeEach hooks before any
// module-under-test import below. See ./setup.ts for details.
import './setup';

import { describe, expect, it, vi } from 'vitest';
import * as cache from '../../../../src/cache';
import logger from '../../../../src/logger';
import { OpenAiResponsesProvider } from '../../../../src/providers/openai/responses';
import { getOpenAiMissingApiKeyMessage } from '../shared';

describe('OpenAiResponsesProvider error handling', () => {
  it('should handle JSON schema validation errors correctly', async () => {
    const mockApiResponse = {
      error: {
        message: 'The response format is invalid. Cannot parse as JSON schema.',
        type: 'invalid_response_format',
        code: 'json_schema_validation_error',
        param: 'response_format',
      },
      status: 400,
      statusText: 'Bad Request',
    };

    vi.mocked(cache.fetchWithCache).mockResolvedValue({
      data: mockApiResponse,
      cached: false,
      status: 400,
      statusText: 'Bad Request',
    });

    const provider = new OpenAiResponsesProvider('gpt-4o', {
      config: {
        apiKey: 'test-key',
        response_format: {
          type: 'json_schema',
          json_schema: {
            name: 'InvalidSchema',
            strict: true,
            schema: {
              type: 'object',
              properties: {
                result: { type: 'string' },
              },
              // The API will complain about something even though the schema is valid
              required: ['missing_field'],
              additionalProperties: false,
            },
          },
        },
      },
    });

    // Call the API
    const result = await provider.callApi('Test prompt');

    // Assert error is present
    expect(result.error).toContain('json_schema_validation_error');
  });

  it('should handle API errors correctly', async () => {
    // Setup mock for fetchWithCache to return an error
    vi.mocked(cache.fetchWithCache).mockResolvedValue({
      data: {
        error: {
          message: 'Invalid request',
          type: 'invalid_request_error',
          code: 'invalid_api_key',
        },
      },
      cached: false,
      status: 400,
      statusText: 'Bad Request',
    });

    // Initialize the provider
    const provider = new OpenAiResponsesProvider('gpt-4o', {
      config: {
        apiKey: 'invalid-key',
      },
    });

    // Call the API
    const result = await provider.callApi('Test prompt');

    // Assertions
    expect(result.error).toContain('API error');
    expect(result.output).toBeUndefined();
  });

  it('should throw error when API key is not set', async () => {
    const provider = new OpenAiResponsesProvider('gpt-4o', {
      config: {},
    });

    vi.spyOn(provider, 'getApiKey').mockReturnValue(undefined);

    await expect(provider.callApi('Test prompt')).rejects.toThrow(getOpenAiMissingApiKeyMessage());
  });

  it('should use custom apiKeyEnvar in missing API key errors', async () => {
    const provider = new OpenAiResponsesProvider('gpt-4o', {
      config: {
        apiKeyEnvar: 'CUSTOM_RESPONSES_API_KEY',
      },
    });

    vi.spyOn(provider, 'getApiKey').mockReturnValue(undefined);

    await expect(provider.callApi('Test prompt')).rejects.toThrow(
      getOpenAiMissingApiKeyMessage('CUSTOM_RESPONSES_API_KEY'),
    );
  });

  it('should handle error in API response data correctly', async () => {
    const mockApiResponse = {
      error: {
        message: 'Content policy violation',
        type: 'content_policy_violation',
        code: 'content_filter',
      },
    };

    vi.mocked(cache.fetchWithCache).mockResolvedValue({
      data: mockApiResponse,
      cached: false,
      status: 400,
      statusText: 'Bad Request',
    });

    const provider = new OpenAiResponsesProvider('gpt-4o', {
      config: {
        apiKey: 'test-key',
      },
    });

    const result = await provider.callApi('Test prompt');

    expect(result.error).toContain('content_policy_violation');
  });

  it('should handle missing output array correctly', async () => {
    const mockApiResponse = {
      id: 'resp_abc123',
      status: 'completed',
      model: 'gpt-4o',
      // No output array
      usage: { input_tokens: 10, output_tokens: 10, total_tokens: 20 },
    };

    // Setup mock for fetchWithCache
    vi.mocked(cache.fetchWithCache).mockResolvedValue({
      data: mockApiResponse,
      cached: false,
      status: 200,
      statusText: 'OK',
    });

    // Initialize the provider
    const provider = new OpenAiResponsesProvider('gpt-4o', {
      config: {
        apiKey: 'test-key',
      },
    });

    // Call the API
    const result = await provider.callApi('Test prompt');

    // Verify error about missing output array
    expect(result.error).toContain('Invalid response format: Missing output array');
  });

  it('should handle successful JSON response payloads correctly', async () => {
    // Mock API response
    const mockApiResponse = {
      id: 'resp_abc123',
      status: 'completed',
      model: 'gpt-4o',
      output: [
        {
          type: 'message',
          role: 'assistant',
          content: [
            {
              type: 'output_text',
              text: 'Test response',
            },
          ],
        },
      ],
      usage: { input_tokens: 10, output_tokens: 10, total_tokens: 20 },
    };

    // Initialize the provider
    const provider = new OpenAiResponsesProvider('gpt-4o', {
      config: {
        apiKey: 'test-key',
      },
    });

    vi.mocked(cache.fetchWithCache).mockResolvedValue({
      data: mockApiResponse,
      cached: false,
      status: 200,
      statusText: 'OK',
    });

    // Ensure we get output without error
    const result = await provider.callApi('Test prompt');

    // Verify the API was called successfully
    expect(cache.fetchWithCache).toHaveBeenCalledWith(
      expect.stringContaining('/responses'),
      expect.anything(),
      expect.anything(),
      'json',
      undefined,
      undefined,
    );
    expect(result.output).toBe('Test response');
    expect(result.error).toBeUndefined();
  });

  it('should handle null content in message output', async () => {
    // Mock API response with content that will cause error during processing
    const mockApiResponse = {
      id: 'resp_abc123',
      status: 'completed',
      model: 'gpt-4o',
      output: [
        {
          type: 'message',
          role: 'assistant',
          content: null, // Will cause TypeError when trying to iterate
        },
      ],
      usage: { input_tokens: 10, output_tokens: 10, total_tokens: 20 },
    };

    // Setup mock for fetchWithCache
    vi.mocked(cache.fetchWithCache).mockResolvedValue({
      data: mockApiResponse,
      cached: false,
      status: 200,
      statusText: 'OK',
    });

    // Initialize the provider
    const provider = new OpenAiResponsesProvider('gpt-4o', {
      config: {
        apiKey: 'test-key',
      },
    });

    // Call the API - since there's no content, it should return an empty string
    const result = await provider.callApi('Test prompt');

    // Verify we get a result with empty output
    expect(result.output).toBe('');
    expect(result.raw).toEqual(mockApiResponse);

    // Error is not set since this is treated as an empty response, not an error
    expect(result.error).toBeUndefined();
  });

  it('should handle error processing results with non-array output', async () => {
    // Setup mock for fetchWithCache to return data that will trigger a processing error
    const mockApiResponse = {
      id: 'resp_abc123',
      status: 'completed',
      model: 'gpt-4o',
      output: 'not-an-array', // This will cause an error when trying to process as an array
      usage: { input_tokens: 10, output_tokens: 10, total_tokens: 20 },
    };

    vi.mocked(cache.fetchWithCache).mockResolvedValue({
      data: mockApiResponse,
      cached: false,
      status: 200,
      statusText: 'OK',
    });

    // Initialize the provider
    const provider = new OpenAiResponsesProvider('gpt-4o', {
      config: {
        apiKey: 'test-key',
      },
    });

    // Call the API
    const result = await provider.callApi('Test prompt');

    // This should have returned an invalid format error
    expect(result.error).toBeTruthy();
    expect(result.error).toContain('Invalid response format');
    expect(result.output).toBeUndefined();

    // The implementation doesn't include raw data when format is invalid
    // So we shouldn't test for it
  });

  // Test for lines 169-174: Testing when fetch throws an error (not just returns error status)

  it('should handle network errors correctly', async () => {
    // Setup mock to throw an error
    vi.mocked(cache.fetchWithCache).mockRejectedValue(new Error('Network error'));

    // Initialize the provider
    const provider = new OpenAiResponsesProvider('gpt-4o', {
      config: {
        apiKey: 'test-key',
      },
    });

    // Call the API
    const result = await provider.callApi('Test prompt');

    // Verify error is handled correctly
    expect(result.error).toContain('API call error:');
    expect(result.error).toContain('Network error');

    // Expect logger to be called with the error
    expect(logger.error).toHaveBeenCalledWith(expect.stringContaining('Network error'));
  });
});