import { describe, expect, it, vi } from 'vitest';
import {
  ModelWebSearchError,
  createModelWebSearchAdapter,
  type FrozenSelectedModel,
} from '../../electron/coding-runtime/pi/model-tools/web-search';

const selectedModel: FrozenSelectedModel = {
  accountId: 'niancode-user-models',
  runtimeProviderId: 'makelore-account-1',
  modelId: 'deepseek-v4-pro',
  generation: 7,
  baseUrl: 'http://127.0.0.1:13210/api/ai-proxy/v1',
  headers: {
    Authorization: 'Bearer frozen-token',
    'X-Works-Square-AI-Token': 'frozen-token',
  },
  capability: {
    schemaVersion: 1,
    adapter: 'bailian-chat-completions',
    supportsForcedSearch: true,
    sourceMode: 'inline-or-structured',
    billingAuthority: 'model-request',
  },
};

function jsonResponse(body: unknown, init?: ResponseInit): Response {
  return new Response(JSON.stringify(body), {
    ...init,
    headers: { 'content-type': 'application/json', ...init?.headers },
  });
}

describe('model Web Search adapter', () => {
  it('uses the frozen Bailian model transport with mandatory search directives', async () => {
    const fetchImpl = vi.fn<typeof fetch>().mockResolvedValue(jsonResponse({
      choices: [{
        message: { content: 'Flybird is a Flappy Bird-style game.' },
      }],
    }));
    const adapter = createModelWebSearchAdapter({ fetchImpl });

    await expect(adapter.search({
      query: ' flybird 玩法 ',
      selectedModel,
      parentTurnId: 'turn-1',
      toolCallId: 'tool-1',
    }, new AbortController().signal)).resolves.toEqual({
      schema: 'makelore-model-tool.v1',
      tool: 'web_search',
      status: 'succeeded',
      modelId: 'deepseek-v4-pro',
      answer: 'Flybird is a Flappy Bird-style game.',
      sources: [],
      sourceMode: 'inline-or-structured',
    });

    expect(fetchImpl).toHaveBeenCalledTimes(1);
    expect(fetchImpl.mock.calls[0][0]).toBe(
      'http://127.0.0.1:13210/api/ai-proxy/v1/chat/completions',
    );
    expect(fetchImpl.mock.calls[0][1]).toMatchObject({
      method: 'POST',
      headers: {
        Authorization: 'Bearer frozen-token',
        'X-Works-Square-AI-Token': 'frozen-token',
        'Content-Type': 'application/json',
      },
      body: JSON.stringify({
        model: 'deepseek-v4-pro',
        messages: [{ role: 'user', content: 'flybird 玩法' }],
        stream: false,
        enable_search: true,
        search_options: { forced_search: true },
      }),
    });
  });

  it('normalizes and stably deduplicates structured sources when present', async () => {
    const fetchImpl = vi.fn<typeof fetch>().mockResolvedValue(jsonResponse({
      choices: [{
        message: {
          content: 'Grounded answer',
          sources: [
            { title: ' First ', url: 'https://example.test/page#one' },
            { title: 'Duplicate', url: 'https://example.test/page#two' },
            { title: 'Second', url: 'https://second.test/' },
          ],
        },
      }],
    }));
    const adapter = createModelWebSearchAdapter({ fetchImpl });

    const result = await adapter.search({
      query: 'query',
      selectedModel,
      parentTurnId: 'turn-1',
      toolCallId: 'tool-1',
    }, new AbortController().signal);

    expect(result.sources).toEqual([
      { title: 'First', url: 'https://example.test/page#one' },
      { title: 'Second', url: 'https://second.test/' },
    ]);
  });

  it('uses the native Responses tool and normalizes URL citations', async () => {
    const fetchImpl = vi.fn<typeof fetch>().mockResolvedValue(jsonResponse({
      output_text: 'Current answer',
      output: [{
        type: 'message',
        content: [{
          type: 'output_text',
          text: 'Current answer',
          annotations: [{
            type: 'url_citation',
            title: 'Source',
            url: 'https://example.test/source',
          }],
        }],
      }],
    }));
    const adapter = createModelWebSearchAdapter({ fetchImpl });

    const result = await adapter.search({
      query: 'latest fact',
      selectedModel: {
        ...selectedModel,
        capability: {
          ...selectedModel.capability,
          adapter: 'openai-responses',
          sourceMode: 'structured',
        },
      },
      parentTurnId: 'turn-2',
      toolCallId: 'tool-2',
    }, new AbortController().signal);

    expect(JSON.parse(String((fetchImpl.mock.calls[0][1] as RequestInit).body))).toEqual({
      model: 'deepseek-v4-pro',
      input: 'latest fact',
      tools: [{ type: 'web_search' }],
      tool_choice: 'required',
    });
    expect(fetchImpl.mock.calls[0][0]).toBe(
      'http://127.0.0.1:13210/api/ai-proxy/v1/responses',
    );
    expect(result.sources).toEqual([
      { title: 'Source', url: 'https://example.test/source' },
    ]);
  });

  it('maps rate limiting without switching model or transport', async () => {
    const fetchImpl = vi.fn<typeof fetch>().mockResolvedValue(jsonResponse(
      { error: { message: 'slow down' } },
      { status: 429 },
    ));
    const adapter = createModelWebSearchAdapter({ fetchImpl });

    await expect(adapter.search({
      query: 'query',
      selectedModel,
      parentTurnId: 'turn-1',
      toolCallId: 'tool-1',
    }, new AbortController().signal)).rejects.toMatchObject({
      code: 'model_web_search_rate_limited',
      status: 429,
      retryable: false,
    } satisfies Partial<ModelWebSearchError>);
    expect(fetchImpl).toHaveBeenCalledTimes(1);
  });

  it('fails closed before transport for an unsupported capability', async () => {
    const fetchImpl = vi.fn<typeof fetch>();
    const adapter = createModelWebSearchAdapter({ fetchImpl });

    await expect(adapter.search({
      query: 'query',
      selectedModel: {
        ...selectedModel,
        capability: undefined,
      },
      parentTurnId: 'turn-1',
      toolCallId: 'tool-1',
    }, new AbortController().signal)).rejects.toMatchObject({
      code: 'model_web_search_unsupported',
      status: 400,
    } satisfies Partial<ModelWebSearchError>);
    expect(fetchImpl).not.toHaveBeenCalled();
  });
});