import { assertEquals } from 'jsr:@std/assert@^1.0.0';
import { ConfigHandler } from '../ts/cli/config-handler.ts';
import { PATHS } from '../ts/constants.ts';
import { logger } from '../ts/logger.ts';

Deno.test('ConfigHandler init writes the current default config shape', async () => {
  const tempDir = await Deno.makeTempDir();
  const originalConfigDir = PATHS.CONFIG_DIR;
  const originalConfigFile = PATHS.CONFIG_FILE;
  (PATHS as { CONFIG_DIR: string }).CONFIG_DIR = tempDir;
  (PATHS as { CONFIG_FILE: string }).CONFIG_FILE = `${tempDir}/config.json`;

  try {
    const handler = new ConfigHandler();
    await handler.init();

    const config = JSON.parse(await Deno.readTextFile(`${tempDir}/config.json`));
    assertEquals(config.ui.enabled, true);
    assertEquals(config.ui.assetSource, 'bundle');
    assertEquals(config.cluster.role, 'standalone');
    assertEquals(config.models.registryUrl, 'https://list.modelgrid.com/catalog/models.json');
    assertEquals(config.models.autoDeploy, true);
    assertEquals(config.models.defaultEngine, 'vllm');
  } finally {
    (PATHS as { CONFIG_DIR: string }).CONFIG_DIR = originalConfigDir;
    (PATHS as { CONFIG_FILE: string }).CONFIG_FILE = originalConfigFile;
    await Deno.remove(tempDir, { recursive: true });
  }
});

Deno.test('ConfigHandler show renders canonical model and ui settings', async () => {
  const tempDir = await Deno.makeTempDir();
  const originalConfigFile = PATHS.CONFIG_FILE;
  const boxes: Array<{ title: string; lines: string[] }> = [];
  const originalLog = logger.log;
  const originalLogBox = logger.logBox;

  (PATHS as { CONFIG_FILE: string }).CONFIG_FILE = `${tempDir}/config.json`;

  logger.log = (_message: string) => {};
  logger.logBox = (
    title: string,
    lines: string[],
  ) => {
    boxes.push({ title, lines });
  };

  try {
    await Deno.writeTextFile(
      `${tempDir}/config.json`,
      JSON.stringify({
        version: '1.0.0',
        api: {
          port: 8080,
          host: '0.0.0.0',
          apiKeys: ['sk-test'],
          rateLimit: 60,
          cors: true,
          corsOrigins: ['*'],
        },
        ui: {
          enabled: true,
          port: 8081,
          host: '0.0.0.0',
          assetSource: 'bundle',
        },
        docker: {
          networkName: 'modelgrid',
          runtime: 'docker',
        },
        gpus: {
          autoDetect: true,
          assignments: {},
        },
        containers: [],
        models: {
          registryUrl: 'https://example.com/catalog.json',
          autoDeploy: false,
          defaultEngine: 'vllm',
          autoLoad: ['meta-llama/Llama-3.1-8B-Instruct'],
        },
        cluster: {
          enabled: false,
          nodeName: 'modelgrid-local',
          role: 'standalone',
          bindHost: '0.0.0.0',
          gossipPort: 7946,
          heartbeatIntervalMs: 5000,
          seedNodes: [],
        },
        checkInterval: 30000,
      }),
    );

    const handler = new ConfigHandler();
    await handler.show();

    const modelsBox = boxes.find((box) => box.title === 'Models');
    assertEquals(modelsBox?.lines.some((line) => line.includes('Auto Deploy:')), true);
    assertEquals(modelsBox?.lines.some((line) => line.includes('Default Engine: vllm')), true);
    assertEquals(modelsBox?.lines.some((line) => line.includes('https://example.com/catalog.json')), true);

    const apiBox = boxes.find((box) => box.title === 'API Server');
    assertEquals(apiBox?.lines.some((line) => line.includes('Rate Limit: 60 req/min')), true);
  } finally {
    logger.log = originalLog;
    logger.logBox = originalLogBox;
    (PATHS as { CONFIG_FILE: string }).CONFIG_FILE = originalConfigFile;
    await Deno.remove(tempDir, { recursive: true });
  }
});