import { assertEquals } from 'jsr:@std/assert@^1.0.0';
import { ApiServer } from '../ts/api/server.ts';

Deno.test('ApiServer serves health metrics and authenticated model listings', async () => {
  const port = 18100 + Math.floor(Math.random() * 1000);
  const server = new ApiServer(
    {
      host: '127.0.0.1',
      port,
      apiKeys: ['valid-key'],
      cors: false,
      corsOrigins: [],
    },
    {
      async getAllStatus() {
        return new Map([
          ['vllm-1', { running: true, health: 'healthy' }],
        ]);
      },
      async getAllAvailableModels() {
        return new Map([
          ['meta-llama/Llama-3.1-8B-Instruct', [{ type: 'vllm' }]],
        ]);
      },
    } as never,
    {
      async getAllModels() {
        return [
          {
            id: 'meta-llama/Llama-3.1-8B-Instruct',
            engine: 'vllm',
            source: { repo: 'meta-llama/Llama-3.1-8B-Instruct' },
            capabilities: { chat: true },
            requirements: { minVramGb: 18 },
          },
        ];
      },
    } as never,
    {} as never,
    {
      getStatus() {
        return {
          localNode: null,
          nodes: [],
          models: {},
          desiredDeployments: [],
        };
      },
    } as never,
  );

  (server as unknown as {
    gpuDetector: { detectGpus: () => Promise<unknown[]> };
  }).gpuDetector = {
    async detectGpus() {
      return [{ id: 'nvidia-0' }];
    },
  };

  await server.start();

  try {
    const healthResponse = await fetch(`http://127.0.0.1:${port}/health`);
    const healthBody = await healthResponse.json();
    assertEquals(healthResponse.status, 200);
    assertEquals(healthBody.status, 'ok');
    assertEquals(healthBody.models, 1);

    const metricsResponse = await fetch(`http://127.0.0.1:${port}/metrics`);
    const metricsBody = await metricsResponse.text();
    assertEquals(metricsResponse.status, 200);
    assertEquals(metricsBody.includes('modelgrid_uptime_seconds'), true);
    assertEquals(metricsBody.includes('modelgrid_models_available 1'), true);

    const unauthenticatedModels = await fetch(`http://127.0.0.1:${port}/v1/models`);
    const unauthenticatedBody = await unauthenticatedModels.json();
    assertEquals(unauthenticatedModels.status, 401);
    assertEquals(unauthenticatedBody.error.type, 'authentication_error');

    const authenticatedModels = await fetch(`http://127.0.0.1:${port}/v1/models`, {
      headers: {
        Authorization: 'Bearer valid-key',
      },
    });
    const authenticatedBody = await authenticatedModels.json();
    assertEquals(authenticatedModels.status, 200);
    assertEquals(authenticatedBody.object, 'list');
    assertEquals(authenticatedBody.data[0].id, 'meta-llama/Llama-3.1-8B-Instruct');
  } finally {
    await server.stop();
  }
});