import test from 'node:test';
import assert from 'node:assert/strict';
import fs from 'node:fs';
import { createServer } from 'node:http';
import { rm } from 'node:fs/promises';
import os from 'node:os';
import path from 'node:path';

import { createServerApp } from '../src/server.js';
import {
  createDuplicatiFixture,
  createDuplicatiServerDbFixture
} from './support/duplicatiFixture.js';

async function startTestServer() {
  const tempDirectory = fs.mkdtempSync(path.join(os.tmpdir(), 'duplicati-server-'));
  const appDbPath = path.join(tempDirectory, 'app.sqlite');
  const uploadDir = path.join(tempDirectory, 'sources');
  const runtime = await createServerApp({
    appDbPath,
    uploadDir,
    previewMaxBytes: 1024
  });

  const server = await new Promise((resolve) => {
    const instance = runtime.app.listen(0, () => resolve(instance));
  });
  const address = server.address();
  const baseUrl = `http://127.0.0.1:${address.port}`;

  return {
    baseUrl,
    appDbPath,
    uploadDir,
    runtime,
    server,
    async close() {
      await new Promise((resolve, reject) => {
        server.close((error) => {
          if (error) {
            reject(error);
            return;
          }

          resolve();
        });
      });
      await runtime.close();
      await rm(tempDirectory, { recursive: true, force: true });
    }
  };
}

async function uploadFixture(baseUrl, fixture, client = null) {
  return uploadDatabase(baseUrl, '/api/sources/upload', fixture, client);
}

async function uploadServerDbFixture(baseUrl, fixture, client = null) {
  return uploadDatabase(baseUrl, '/api/server-db/upload', fixture, client);
}

async function uploadDatabase(baseUrl, endpoint, fixture, client = null) {
  const form = new FormData();
  const bytes = await fs.promises.readFile(fixture.databasePath);
  form.set('database', new File([bytes], path.basename(fixture.databasePath), { type: 'application/octet-stream' }));

  const response = client
    ? await client.fetch(endpoint, {
        method: 'POST',
        body: form
      })
    : await fetch(`${baseUrl}${endpoint}`, {
        method: 'POST',
        body: form
      });
  const payload = await response.json();
  return { response, payload };
}

function attachCookie(headers, cookie) {
  const normalizedHeaders = new Headers(headers ?? {});
  normalizedHeaders.set('Cookie', cookie);
  return normalizedHeaders;
}

async function setupAuthenticatedClient(baseUrl) {
  const setupResponse = await fetch(`${baseUrl}/api/auth/setup`, {
    method: 'POST',
    headers: {
      'Content-Type': 'application/json'
    },
    body: JSON.stringify({
      username: 'admin',
      password: 'Password123!'
    })
  });
  const setupPayload = await setupResponse.json();
  const sessionCookie = setupResponse.headers.get('set-cookie')?.split(';', 1)?.[0] ?? '';
  assert.equal(setupResponse.status, 201);
  assert.equal(setupPayload.auth.authenticated, true);
  assert.ok(sessionCookie);

  return {
    cookie: sessionCookie,
    async fetch(pathname, options = {}) {
      return fetch(`${baseUrl}${pathname}`, {
        ...options,
        headers: attachCookie(options.headers, sessionCookie)
      });
    },
    async json(pathname, options = {}) {
      const response = await this.fetch(pathname, options);
      return response.json();
    }
  };
}

function createBasicHeader(username, password) {
  return `Basic ${Buffer.from(`${username}:${password}`, 'utf8').toString('base64')}`;
}

async function startRemoteVolumeServer({ remoteDir, username, password }) {
  const expectedAuth = createBasicHeader(username, password);
  const server = createServer(async (request, response) => {
    if ((request.headers.authorization ?? '') !== expectedAuth) {
      response.writeHead(401, { 'WWW-Authenticate': 'Basic realm="test"' });
      response.end('unauthorized');
      return;
    }

    const filename = decodeURIComponent(new URL(request.url, 'http://127.0.0.1').pathname.slice(1));
    const targetPath = path.join(remoteDir, filename);

    try {
      const stat = await fs.promises.stat(targetPath);
      response.writeHead(200, {
        'Content-Length': stat.size,
        'Content-Type': 'application/octet-stream'
      });
      fs.createReadStream(targetPath).pipe(response);
    } catch (error) {
      response.writeHead(404);
      response.end('missing');
    }
  });

  await new Promise((resolve) => server.listen(0, resolve));
  const address = server.address();
  const baseUrl = `http://127.0.0.1:${address.port}/`;

  return {
    baseUrl,
    server,
    async close() {
      await new Promise((resolve, reject) => {
        server.close((error) => {
          if (error) {
            reject(error);
            return;
          }

          resolve();
        });
      });
    }
  };
}

async function waitForEnhancementStatus(baseUrl, sourceId, allowedStatuses, client = null) {
  for (let attempt = 0; attempt < 120; attempt += 1) {
    const payload = client
      ? await client.json(`/api/sources/${sourceId}/enhance/status`)
      : await fetch(`${baseUrl}/api/sources/${sourceId}/enhance/status`).then((response) => response.json());
    if (allowedStatuses.includes(payload.enhancement.status)) {
      return payload.enhancement;
    }

    await new Promise((resolve) => setTimeout(resolve, 50));
  }

  throw new Error(`Timed out waiting for enhancement status ${allowedStatuses.join(', ')}`);
}

test('multi-source uploads coexist, duplicate uploads reuse the existing source, and sourceId becomes required', async () => {
  const server = await startTestServer();
  const firstFixture = createDuplicatiFixture({
    filename: 'first.sqlite',
    layout: 'file_lookup',
    includeArchiveEntryIndex: false,
    includeVolumeCryptoCache: false
  });
  const secondFixture = createDuplicatiFixture({
    filename: 'second.sqlite',
    layout: 'file_lookup',
    includeArchiveEntryIndex: false,
    includeVolumeCryptoCache: false,
    demoFileName: 'demo-v2.mp4',
    demoFileHash: 'filehash-demo-v2=='
  });

  try {
    const authStateBeforeSetup = await fetch(`${server.baseUrl}/api/auth/state`).then((response) => response.json());
    assert.equal(authStateBeforeSetup.auth.setupRequired, true);
    assert.equal(authStateBeforeSetup.auth.authenticated, false);

    const unauthenticatedSources = await fetch(`${server.baseUrl}/api/sources`).then((response) => response.json());
    assert.equal(unauthenticatedSources.error.code, 'AUTH_SETUP_REQUIRED');

    const client = await setupAuthenticatedClient(server.baseUrl);
    const emptySources = await client.json('/api/sources');
    assert.equal(emptySources.sources.length, 0);

    const firstUpload = await uploadFixture(server.baseUrl, firstFixture, client);
    assert.equal(firstUpload.response.status, 201);
    assert.equal(firstUpload.payload.reused, false);

    const duplicateUpload = await uploadFixture(server.baseUrl, firstFixture, client);
    assert.equal(duplicateUpload.response.status, 200);
    assert.equal(duplicateUpload.payload.reused, true);
    assert.equal(duplicateUpload.payload.source.id, firstUpload.payload.source.id);

    const secondUpload = await uploadFixture(server.baseUrl, secondFixture, client);
    assert.equal(secondUpload.response.status, 201);
    assert.notEqual(secondUpload.payload.source.id, firstUpload.payload.source.id);

    const compatCurrent = await client.fetch('/api/source/current');
    const compatPayload = await compatCurrent.json();
    assert.equal(compatCurrent.status, 409);
    assert.equal(compatPayload.error.code, 'SOURCE_ID_REQUIRED');

    const missingSourceId = await client.json('/api/ls?path=/source/media/movies');
    assert.equal(missingSourceId.error.code, 'SOURCE_ID_REQUIRED');

    const firstListing = await client.json(
      `/api/ls?sourceId=${firstUpload.payload.source.id}&path=/source/media/movies`
    );
    assert.equal(firstListing.sourceId, firstUpload.payload.source.id);

    const secondListing = await client.json(
      `/api/ls?sourceId=${secondUpload.payload.source.id}&path=/source/media/movies`
    );
    assert.equal(secondListing.sourceId, secondUpload.payload.source.id);

    const filesInSourceRoot = await fs.promises.readdir(server.uploadDir, { withFileTypes: true });
    const sourceDirectories = filesInSourceRoot.filter(
      (entry) => entry.isDirectory() && entry.name !== '_staging' && entry.name !== '_server'
    );
    assert.equal(sourceDirectories.length, 2);
  } finally {
    firstFixture.cleanup();
    secondFixture.cleanup();
    await server.close();
  }
});

test('deleting a single source removes only that source and keeps the server database intact', async () => {
  const server = await startTestServer();
  const sourceA = createDuplicatiFixture({
    filename: 'delete-a.sqlite',
    layout: 'file_lookup',
    includeArchiveEntryIndex: false,
    includeVolumeCryptoCache: false
  });
  const sourceB = createDuplicatiFixture({
    filename: 'delete-b.sqlite',
    layout: 'file_lookup',
    includeArchiveEntryIndex: false,
    includeVolumeCryptoCache: false,
    demoFileName: 'delete-b.mp4',
    demoFileHash: 'delete-b-hash=='
  });
  const serverDb = createDuplicatiServerDbFixture({
    backups: [
      { id: 21, name: 'Delete A', dbPath: '/data/Duplicati/delete-a.sqlite' },
      { id: 22, name: 'Delete B', dbPath: '/data/Duplicati/delete-b.sqlite' }
    ]
  });

  try {
    const client = await setupAuthenticatedClient(server.baseUrl);
    const uploadA = await uploadFixture(server.baseUrl, sourceA, client);
    const uploadB = await uploadFixture(server.baseUrl, sourceB, client);
    const deleteSourceDir = path.join(server.uploadDir, uploadA.payload.source.id);
    const keepSourceDir = path.join(server.uploadDir, uploadB.payload.source.id);

    const serverDbUpload = await uploadServerDbFixture(server.baseUrl, serverDb, client);
    assert.equal(serverDbUpload.response.status, 201);

    const deleteResponse = await client.fetch(`/api/sources/${uploadA.payload.source.id}`, {
      method: 'DELETE'
    });
    const deletePayload = await deleteResponse.json();
    assert.equal(deleteResponse.status, 200);
    assert.equal(deletePayload.deleted.id, uploadA.payload.source.id);

    const remainingSources = await client.json('/api/sources');
    assert.equal(remainingSources.sources.length, 1);
    assert.equal(remainingSources.sources[0].id, uploadB.payload.source.id);

    const deletedLookup = await client.json(`/api/sources/${uploadA.payload.source.id}`);
    assert.equal(deletedLookup.error.code, 'SOURCE_NOT_FOUND');

    await assert.rejects(() => fs.promises.stat(deleteSourceDir));
    const keptStat = await fs.promises.stat(keepSourceDir);
    assert.equal(keptStat.isDirectory(), true);

    const serverDbSummary = await client.json('/api/server-db');
    assert.equal(serverDbSummary.serverDb.available, true);
    assert.equal(serverDbSummary.serverDb.backupCount, 2);
  } finally {
    sourceA.cleanup();
    sourceB.cleanup();
    serverDb.cleanup();
    await server.close();
  }
});

test('server db upload maps task names onto existing sources and replacement remaps them', async () => {
  const server = await startTestServer();
  const sourceA = createDuplicatiFixture({
    filename: 'TMQRJYNADS.sqlite',
    layout: 'file_lookup',
    includeArchiveEntryIndex: false,
    includeVolumeCryptoCache: false
  });
  const sourceB = createDuplicatiFixture({
    filename: 'ENVPLWAIWJ.sqlite',
    layout: 'file_lookup',
    includeArchiveEntryIndex: false,
    includeVolumeCryptoCache: false,
    demoFileName: 'env-demo.mp4',
    demoFileHash: 'env-demo-hash=='
  });
  const firstServerDb = createDuplicatiServerDbFixture({
    backups: [
      { id: 2, name: '四川农场主', dbPath: '/data/Duplicati/TMQRJYNADS.sqlite' },
      { id: 3, name: '小白', dbPath: '/data/Duplicati/ENVPLWAIWJ.sqlite' }
    ]
  });
  const replacementServerDb = createDuplicatiServerDbFixture({
    backups: [
      { id: 2, name: '四川农场主-新', dbPath: '/data/Duplicati/TMQRJYNADS.sqlite' },
      { id: 3, name: '小白-新', dbPath: '/data/Duplicati/ENVPLWAIWJ.sqlite' }
    ]
  });

  try {
    const client = await setupAuthenticatedClient(server.baseUrl);
    const invalidServerDbUpload = await uploadDatabase(server.baseUrl, '/api/sources/upload', firstServerDb, client);
    assert.equal(invalidServerDbUpload.response.status, 422);
    assert.equal(invalidServerDbUpload.payload.error.code, 'INVALID_SOURCE_SCHEMA');

    const uploadA = await uploadFixture(server.baseUrl, sourceA, client);
    const uploadB = await uploadFixture(server.baseUrl, sourceB, client);
    assert.equal(uploadA.payload.source.displayName, 'TMQRJYNADS.sqlite');
    assert.equal(uploadA.payload.source.displayNameSource, 'filename');

    const firstServerDbUpload = await uploadServerDbFixture(server.baseUrl, firstServerDb, client);
    assert.equal(firstServerDbUpload.response.status, 201);
    assert.equal(firstServerDbUpload.payload.serverDb.available, true);
    assert.equal(firstServerDbUpload.payload.serverDb.backupCount, 2);

    const sourcesAfterMapping = await client.json('/api/sources');
    const mappedA = sourcesAfterMapping.sources.find((source) => source.id === uploadA.payload.source.id);
    const mappedB = sourcesAfterMapping.sources.find((source) => source.id === uploadB.payload.source.id);
    assert.equal(mappedA.displayName, '四川农场主');
    assert.equal(mappedA.displayNameSource, 'server-db');
    assert.equal(mappedA.matchedBackupName, '四川农场主');
    assert.equal(mappedB.displayName, '小白');

    const serverDbSummary = await client.json('/api/server-db');
    assert.equal(serverDbSummary.serverDb.available, true);
    assert.equal(serverDbSummary.serverDb.backupCount, 2);

    const replacementUpload = await uploadServerDbFixture(server.baseUrl, replacementServerDb, client);
    assert.equal(replacementUpload.response.status, 201);

    const sourcesAfterReplacement = await client.json('/api/sources');
    const remappedA = sourcesAfterReplacement.sources.find((source) => source.id === uploadA.payload.source.id);
    const remappedB = sourcesAfterReplacement.sources.find((source) => source.id === uploadB.payload.source.id);
    assert.equal(remappedA.displayName, '四川农场主-新');
    assert.equal(remappedB.displayName, '小白-新');
  } finally {
    sourceA.cleanup();
    sourceB.cleanup();
    firstServerDb.cleanup();
    replacementServerDb.cleanup();
    await server.close();
  }
});

test('global WebDAV defaults plus server-db target URL allow enhancement without per-source credential re-entry', async () => {
  const server = await startTestServer();
  const fixture = createDuplicatiFixture({
    filename: 'global-defaults.sqlite',
    layout: 'file_lookup',
    includeArchiveEntryIndex: false,
    includeVolumeCryptoCache: false,
    withRemoteVolumes: true
  });
  const remote = await startRemoteVolumeServer({
    remoteDir: fixture.remoteDir,
    username: 'demo',
    password: 'secret'
  });
  const serverDb = createDuplicatiServerDbFixture({
    backups: [
      {
        id: 7,
        name: 'Global Defaults Demo',
        dbPath: '/data/Duplicati/global-defaults.sqlite',
        targetUrl: remote.baseUrl.replace('http://', 'webdav://')
      }
    ]
  });

  try {
    const client = await setupAuthenticatedClient(server.baseUrl);
    const upload = await uploadFixture(server.baseUrl, fixture, client);
    const sourceId = upload.payload.source.id;

    const defaultsResponse = await client.fetch('/api/webdav-defaults', {
      method: 'PUT',
      headers: {
        'Content-Type': 'application/json'
      },
      body: JSON.stringify({
        authMode: 'basic',
        username: 'demo',
        password: 'secret',
        passphrase: fixture.passphrase
      })
    });
    const defaultsPayload = await defaultsResponse.json();
    assert.equal(defaultsResponse.status, 200);
    assert.equal(defaultsPayload.defaults.configured, true);
    assert.equal(defaultsPayload.defaults.hasPassphrase, true);

    const serverDbUpload = await uploadServerDbFixture(server.baseUrl, serverDb, client);
    assert.equal(serverDbUpload.response.status, 201);

    const sourceDetail = await client.json(`/api/sources/${sourceId}`);
    assert.equal(sourceDetail.source.webdav.derivedWebdavBaseUrl, remote.baseUrl);
    assert.equal(sourceDetail.source.webdav.effectiveWebdavBaseUrl, remote.baseUrl);
    assert.equal(sourceDetail.source.webdav.effectiveWebdavBaseUrlSource, 'server-db');

    const browserSecrets = await client.json(`/api/sources/${sourceId}/browser-secrets`);
    assert.equal(browserSecrets.secrets.webdavBaseUrl, remote.baseUrl);
    assert.equal(browserSecrets.secrets.username, 'demo');
    assert.equal(browserSecrets.secrets.password, 'secret');
    assert.equal(browserSecrets.secrets.passphrase, fixture.passphrase);
    assert.equal(browserSecrets.secrets.authMode, 'basic');

    const enhanceResponse = await client.fetch(`/api/sources/${sourceId}/enhance`, {
      method: 'POST',
      headers: {
        'Content-Type': 'application/json'
      },
      body: JSON.stringify({})
    });
    assert.equal(enhanceResponse.status, 202);

    const enhancement = await waitForEnhancementStatus(server.baseUrl, sourceId, ['ready', 'failed'], client);
    assert.equal(enhancement.status, 'ready');
  } finally {
    await remote.close();
    fixture.cleanup();
    serverDb.cleanup();
    await server.close();
  }
});

test('raw source keeps browsing available, gates file-info, and does not leak saved secrets', async () => {
  const server = await startTestServer();
  const rawFixture = createDuplicatiFixture({
    filename: 'raw-job.sqlite',
    layout: 'file_lookup',
    includeArchiveEntryIndex: false,
    includeVolumeCryptoCache: false
  });

  try {
    const client = await setupAuthenticatedClient(server.baseUrl);
    const upload = await uploadFixture(server.baseUrl, rawFixture, client);
    assert.equal(upload.response.status, 201);

    const sourceId = upload.payload.source.id;
    const listing = await client.json(`/api/ls?sourceId=${sourceId}&path=/source/media/movies`);
    const fileId = listing.entries.find((entry) => entry.type === 'file')?.id;
    assert.ok(fileId);

    const fileInfoBeforeEnhance = await client.json(
      `/api/file-info?sourceId=${sourceId}&id=${encodeURIComponent(fileId)}`
    );
    assert.equal(fileInfoBeforeEnhance.error.code, 'ENHANCEMENT_NOT_READY');

    const saveSecretsResponse = await client.fetch(`/api/sources/${sourceId}/secrets`, {
      method: 'PUT',
      headers: {
        'Content-Type': 'application/json'
      },
      body: JSON.stringify({
        webdavBaseUrl: 'http://127.0.0.1:9999/remote/',
        username: 'demo',
        password: 'secret',
        passphrase: 'passphrase',
        authMode: 'basic'
      })
    });
    const saveSecretsPayload = await saveSecretsResponse.json();
    assert.equal(saveSecretsResponse.status, 200);
    assert.equal(saveSecretsPayload.source.credentialsSaved, true);
    assert.equal(saveSecretsPayload.source.password, undefined);
    assert.equal(saveSecretsPayload.source.passphrase, undefined);

    const sourceDetail = await client.json(`/api/sources/${sourceId}`);
    assert.equal(sourceDetail.source.credentialsSaved, true);
    assert.equal(sourceDetail.source.username, undefined);
    assert.equal(sourceDetail.source.password, undefined);
  } finally {
    rawFixture.cleanup();
    await server.close();
  }
});

test('enhancement job builds archive indexes from Basic-auth WebDAV volumes and old file ids stay valid', async () => {
  const server = await startTestServer();
  const fixture = createDuplicatiFixture({
    filename: 'enhance.sqlite',
    layout: 'file_lookup',
    includeArchiveEntryIndex: false,
    includeVolumeCryptoCache: false,
    withRemoteVolumes: true,
    includeAesExtensions: true
  });
  const remote = await startRemoteVolumeServer({
    remoteDir: fixture.remoteDir,
    username: 'demo',
    password: 'secret'
  });

  try {
    const client = await setupAuthenticatedClient(server.baseUrl);
    const upload = await uploadFixture(server.baseUrl, fixture, client);
    const sourceId = upload.payload.source.id;

    const listing = await client.json(`/api/ls?sourceId=${sourceId}&path=/source/media/movies`);
    const fileId = listing.entries.find((entry) => entry.type === 'file')?.id;
    assert.ok(fileId);

    const enhanceResponse = await client.fetch(`/api/sources/${sourceId}/enhance`, {
      method: 'POST',
      headers: {
        'Content-Type': 'application/json'
      },
      body: JSON.stringify({
        webdavBaseUrl: remote.baseUrl,
        username: 'demo',
        password: 'secret',
        passphrase: fixture.passphrase,
        authMode: 'basic'
      })
    });
    assert.equal(enhanceResponse.status, 202);

    const enhancement = await waitForEnhancementStatus(server.baseUrl, sourceId, ['ready', 'failed'], client);
    assert.equal(enhancement.status, 'ready');
    assert.equal(enhancement.processedVolumes, 2);
    assert.equal(enhancement.totalVolumes, 2);

    const sourceDetail = await client.json(`/api/sources/${sourceId}`);
    assert.equal(sourceDetail.source.capabilities.archiveEntryIndex, true);
    assert.equal(sourceDetail.source.capabilities.volumeCryptoCache, true);

    const fileInfo = await client.json(
      `/api/file-info?sourceId=${sourceId}&id=${encodeURIComponent(fileId)}`
    );
    assert.equal(fileInfo.file.path, '/source/media/movies/demo.mp4');
    assert.equal(fileInfo.restorePlan.segmentCount, 3);
    assert.equal(fileInfo.requiredDblocks[0], 'duplicati-demo.dblock.zip.aes');
    assert.equal(fileInfo.volumes[0].encryption.streamFormat, 'v2');
  } finally {
    await remote.close();
    fixture.cleanup();
    await server.close();
  }
});

test('video thumbnails can be uploaded, listed, fetched, deleted, and cleared per source', async () => {
  const server = await startTestServer();
  const fixture = createDuplicatiFixture({
    filename: 'thumbs.sqlite',
    layout: 'file_lookup',
    includeArchiveEntryIndex: false,
    includeVolumeCryptoCache: false,
    withRemoteVolumes: true
  });
  const remote = await startRemoteVolumeServer({
    remoteDir: fixture.remoteDir,
    username: 'demo',
    password: 'secret'
  });

  try {
    const client = await setupAuthenticatedClient(server.baseUrl);
    const upload = await uploadFixture(server.baseUrl, fixture, client);
    const sourceId = upload.payload.source.id;

    const enhanceResponse = await client.fetch(`/api/sources/${sourceId}/enhance`, {
      method: 'POST',
      headers: {
        'Content-Type': 'application/json'
      },
      body: JSON.stringify({
        webdavBaseUrl: remote.baseUrl,
        username: 'demo',
        password: 'secret',
        passphrase: fixture.passphrase,
        authMode: 'basic'
      })
    });
    assert.equal(enhanceResponse.status, 202);

    const enhancement = await waitForEnhancementStatus(server.baseUrl, sourceId, ['ready', 'failed'], client);
    assert.equal(enhancement.status, 'ready');

    const listingBefore = await client.json(`/api/ls?sourceId=${sourceId}&path=/source/media/movies`);
    const fileEntry = listingBefore.entries.find((entry) => entry.type === 'file');
    assert.ok(fileEntry);
    assert.equal(fileEntry.thumbnail.available, false);

    const fileInfoBefore = await client.json(
      `/api/file-info?sourceId=${sourceId}&id=${encodeURIComponent(fileEntry.id)}`
    );
    assert.equal(fileInfoBefore.file.thumbnail.available, false);

    const thumbnailForm = new FormData();
    thumbnailForm.set('fileId', fileEntry.id);
    thumbnailForm.set(
      'image',
      new File([Uint8Array.from([0x52, 0x49, 0x46, 0x46, 0x10, 0x00, 0x00, 0x00])], 'preview.webp', {
        type: 'image/webp'
      })
    );

    const thumbnailUploadResponse = await client.fetch(`/api/sources/${sourceId}/thumbnails`, {
      method: 'POST',
      body: thumbnailForm
    });
    const thumbnailUploadPayload = await thumbnailUploadResponse.json();
    assert.equal(thumbnailUploadResponse.status, 201);
    assert.equal(thumbnailUploadPayload.thumbnail.available, true);
    assert.ok(thumbnailUploadPayload.thumbnail.thumbnailId);

    const thumbnailFetchResponse = await client.fetch(thumbnailUploadPayload.thumbnail.thumbnailUrl);
    assert.equal(thumbnailFetchResponse.status, 200);
    assert.equal(thumbnailFetchResponse.headers.get('content-type'), 'image/webp');
    assert.deepEqual(new Uint8Array(await thumbnailFetchResponse.arrayBuffer()), Uint8Array.from([0x52, 0x49, 0x46, 0x46, 0x10, 0x00, 0x00, 0x00]));

    const listingAfterUpload = await client.json(`/api/ls?sourceId=${sourceId}&path=/source/media/movies`);
    const listedFileAfterUpload = listingAfterUpload.entries.find((entry) => entry.id === fileEntry.id);
    assert.equal(listedFileAfterUpload.thumbnail.available, true);
    assert.equal(listedFileAfterUpload.thumbnail.thumbnailId, thumbnailUploadPayload.thumbnail.thumbnailId);

    const fileInfoAfterUpload = await client.json(
      `/api/file-info?sourceId=${sourceId}&id=${encodeURIComponent(fileEntry.id)}`
    );
    assert.equal(fileInfoAfterUpload.file.thumbnail.available, true);

    const sourceDetailAfterUpload = await client.json(`/api/sources/${sourceId}`);
    assert.equal(sourceDetailAfterUpload.source.thumbnailCache.count, 1);

    const singleDeleteResponse = await client.fetch(
      `/api/sources/${sourceId}/thumbnails/${encodeURIComponent(thumbnailUploadPayload.thumbnail.thumbnailId)}`,
      {
        method: 'DELETE'
      }
    );
    const singleDeletePayload = await singleDeleteResponse.json();
    assert.equal(singleDeleteResponse.status, 200);
    assert.equal(singleDeletePayload.deleted.fileId, fileEntry.id);

    const listingAfterSingleDelete = await client.json(`/api/ls?sourceId=${sourceId}&path=/source/media/movies`);
    const listedFileAfterDelete = listingAfterSingleDelete.entries.find((entry) => entry.id === fileEntry.id);
    assert.equal(listedFileAfterDelete.thumbnail.available, false);

    const secondThumbnailForm = new FormData();
    secondThumbnailForm.set('fileId', fileEntry.id);
    secondThumbnailForm.set(
      'image',
      new File([Uint8Array.from([0x57, 0x45, 0x42, 0x50])], 'preview-2.webp', {
        type: 'image/webp'
      })
    );
    const secondUploadResponse = await client.fetch(`/api/sources/${sourceId}/thumbnails`, {
      method: 'POST',
      body: secondThumbnailForm
    });
    assert.equal(secondUploadResponse.status, 201);

    const clearResponse = await client.fetch(`/api/sources/${sourceId}/thumbnails`, {
      method: 'DELETE'
    });
    const clearPayload = await clearResponse.json();
    assert.equal(clearResponse.status, 200);
    assert.equal(clearPayload.cleared.removedCount, 1);

    const sourceDetailAfterClear = await client.json(`/api/sources/${sourceId}`);
    assert.equal(sourceDetailAfterClear.source.thumbnailCache.count, 0);
  } finally {
    await remote.close();
    fixture.cleanup();
    await server.close();
  }
});

test('failed enhancement keeps directory browsing available and surfaces ENHANCEMENT_FAILED', async () => {
  const server = await startTestServer();
  const fixture = createDuplicatiFixture({
    filename: 'enhance-fail.sqlite',
    layout: 'file_lookup',
    includeArchiveEntryIndex: false,
    includeVolumeCryptoCache: false,
    withRemoteVolumes: true
  });
  const remote = await startRemoteVolumeServer({
    remoteDir: fixture.remoteDir,
    username: 'demo',
    password: 'secret'
  });

  try {
    const client = await setupAuthenticatedClient(server.baseUrl);
    const upload = await uploadFixture(server.baseUrl, fixture, client);
    const sourceId = upload.payload.source.id;

    const listingBefore = await client.json(`/api/ls?sourceId=${sourceId}&path=/source/media/movies`);
    const fileId = listingBefore.entries.find((entry) => entry.type === 'file')?.id;
    assert.ok(fileId);

    const enhanceResponse = await client.fetch(`/api/sources/${sourceId}/enhance`, {
      method: 'POST',
      headers: {
        'Content-Type': 'application/json'
      },
      body: JSON.stringify({
        webdavBaseUrl: remote.baseUrl,
        username: 'demo',
        password: 'secret',
        passphrase: 'wrong-passphrase',
        authMode: 'basic'
      })
    });
    assert.equal(enhanceResponse.status, 202);

    const enhancement = await waitForEnhancementStatus(server.baseUrl, sourceId, ['ready', 'failed'], client);
    assert.equal(enhancement.status, 'failed');

    const listingAfter = await client.json(`/api/ls?sourceId=${sourceId}&path=/source/media/movies`);
    assert.equal(listingAfter.entries.length, listingBefore.entries.length);

    const fileInfo = await client.json(`/api/file-info?sourceId=${sourceId}&id=${encodeURIComponent(fileId)}`);
    assert.equal(fileInfo.error.code, 'ENHANCEMENT_FAILED');
  } finally {
    await remote.close();
    fixture.cleanup();
    await server.close();
  }
});