import assert from 'node:assert/strict';
import test from 'node:test';
import {
  createMindSpaceRemoteServerAdapter,
  mindspaceRemoteServerAdapterInternals,
} from './mindspace-remote-server-adapter.mjs';

test('buildRemoteOperationUrl normalizes endpoint and encodes operation path', () => {
  assert.equal(
    mindspaceRemoteServerAdapterInternals.buildRemoteOperationUrl(
      'https://mindspace.example.com/',
      'assetService',
      'renderAssetPreview',
      '/internal/mindspace-adapter',
    ),
    'https://mindspace.example.com/internal/mindspace-adapter/assetService/renderAssetPreview',
  );
});

test('createMindSpaceRemoteServerAdapter validates endpoint at startup', () => {
  const adapter = createMindSpaceRemoteServerAdapter({
    fetchFn: async () => {
      throw new Error('should not fetch');
    },
  });
  assert.throws(() => adapter.assertReady(), /MINDSPACE_REMOTE_BASE_URL/);
});

test('createMindSpaceRemoteServerAdapter proxies server binding methods through fetch transport', async () => {
  const calls = [];
  const adapter = createMindSpaceRemoteServerAdapter({
    endpoint: 'https://mindspace.example.com/',
    authToken: 'secret-token',
    operationBasePath: '/internal/mindspace-adapter/',
    timeoutMs: 3000,
    fetchFn: async (url, init) => {
      calls.push({ url, init });
      return {
        ok: true,
        status: 200,
        async text() {
          return JSON.stringify({ ok: true, source: 'remote' });
        },
      };
    },
    logger: { log() {}, warn() {}, error() {} },
  });

  const result = await adapter.assetService.renderAssetPreview({ userId: 'u1', assetId: 'a1' });

  assert.deepEqual(result, { ok: true, source: 'remote' });
  assert.equal(calls.length, 1);
  assert.equal(
    calls[0].url,
    'https://mindspace.example.com/internal/mindspace-adapter/assetService/renderAssetPreview',
  );
  assert.equal(calls[0].init.method, 'POST');
  assert.equal(calls[0].init.headers.Authorization, 'Bearer secret-token');
  assert.deepEqual(JSON.parse(calls[0].init.body), {
    args: [{ userId: 'u1', assetId: 'a1' }],
  });
});

test('createMindSpaceRemoteServerAdapter exposes conversation package read methods', async () => {
  const calls = [];
  const adapter = createMindSpaceRemoteServerAdapter({
    endpoint: 'https://mindspace.example.com/',
    authToken: 'secret-token',
    fetchFn: async (url, init) => {
      calls.push({ url, init });
      return {
        ok: true,
        status: 200,
        async text() {
          return JSON.stringify({ packageId: 'cp-session-1' });
        },
      };
    },
    logger: { log() {}, warn() {}, error() {} },
  });

  await adapter.conversationPackageRegistry.readManifestForSession({
    userId: 'user-1',
    sessionId: 'session-1',
  });
  await adapter.conversationPackageRegistry.readArtifactObject({
    userId: 'user-1',
    sessionId: 'session-1',
    artifactId: 'artifact-1',
  });

  assert.match(calls[0].url, /conversationPackageRegistry\/readManifestForSession$/);
  assert.match(calls[1].url, /conversationPackageRegistry\/readArtifactObject$/);
  assert.deepEqual(JSON.parse(calls[0].init.body), {
    args: [{ userId: 'user-1', sessionId: 'session-1' }],
  });
  assert.deepEqual(JSON.parse(calls[1].init.body), {
    args: [{ userId: 'user-1', sessionId: 'session-1', artifactId: 'artifact-1' }],
  });
  assert.equal(calls[0].init.headers.Authorization, 'Bearer secret-token');
  assert.equal(calls[1].init.headers.Authorization, 'Bearer secret-token');
});

test('createMindSpaceRemoteServerAdapter rejects unknown binding methods', () => {
  const adapter = createMindSpaceRemoteServerAdapter({
    endpoint: 'https://mindspace.example.com',
    fetchFn: async () => ({ ok: true, status: 204, text: async () => '' }),
    logger: { log() {}, warn() {}, error() {} },
  });

  assert.throws(() => adapter.assetService.notARealMethod, /does not expose/);
});

test('createMindSpaceRemoteServerAdapter surfaces remote conversation package errors with binding context', async () => {
  const adapter = createMindSpaceRemoteServerAdapter({
    endpoint: 'https://mindspace.example.com/',
    authToken: 'secret-token',
    fetchFn: async () => ({
      ok: false,
      status: 502,
      async text() {
        return 'upstream manifest missing';
      },
    }),
    logger: { log() {}, warn() {}, error() {} },
  });

  await assert.rejects(
    () => adapter.conversationPackageRegistry.readManifestForSession({
      userId: 'user-1',
      sessionId: 'session-1',
    }),
    /conversationPackageRegistry\.readManifestForSession\(\) failed with 502: upstream manifest missing/,
  );
});