const test = require('node:test');
const assert = require('node:assert/strict');
const fs = require('node:fs');
const vm = require('node:vm');

const { render } = require('../src/web/public/js/shared/slide-preview-renderer');
const { buildThumbnailPreviewPayload } = require('../src/web/lib/media/slide-thumbnails');
const placeholderUtils = require('../src/web/public/js/shared/placeholder-utils');
const { resolveRegionContent } = require('../src/web/public/js/shared/region-content');
const { getRegionEditorScripts } = require('../src/web/lib/region-scripts');

function loadEditorTimeDateModule() {
  const source = fs.readFileSync(require.resolve('../src/web/public/js/regions/type/time-date.js'), 'utf8');
  const modules = new Map();
  const sandbox = {
    window: {
      pulseRegionTypes: {
        register(type, definition) {
          modules.set(type, definition);
        }
      },
      pulseRegionUtils: {
        escapeHtml(value) {
          return String(value).replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;').replace(/"/g, '&quot;').replace(/'/g, '&#39;');
        },
        sanitizePreviewHtml(value) {
          return String(value);
        }
      },
      placeholderUtils: placeholderUtils
    }
  };

  vm.runInNewContext(source, sandbox, { filename: 'time-date.js' });
  return modules.get('time-date');
}

test('list preview loads a saved image with legacy fallback and clears it on close', () => {
  const source = fs.readFileSync(require.resolve('../src/web/views/signage/slides/list.hbs'), 'utf8');
  assert.doesNotMatch(source, /<iframe|\/api\/internal\/slide-thumbnails/);
  assert.match(source, /{{> slide-preview-modal}}/);
  const modalSource = fs.readFileSync(require.resolve('../src/web/views/shared/slide-preview-modal.hbs'), 'utf8');
  const css = fs.readFileSync(require.resolve('../src/web/public/css/theme-custom.css'), 'utf8');
  assert.match(css, /\.slide-list-preview-frame\[hidden\]\s*\{\s*display: none;/);
  const handlers = {};
  const image = {
    addEventListener(name, handler) { handlers['image:' + name] = handler; },
    getAttribute(name) { return this[name]; },
    removeAttribute(name) { delete this[name]; }
  };
  const empty = {};
  const title = {};
  const modal = {
    querySelector(selector) {
      return selector === '[data-slide-preview-image]' ? image : selector === '[data-slide-preview-empty]' ? empty : title;
    },
    addEventListener(name, handler) { handlers[name] = handler; },
    style: { setProperty() {} }
  };
  vm.runInNewContext(modalSource.match(/<script>([\s\S]*?)<\/script>/)[1], {
    document: { getElementById() { return modal; } },
    window: { innerWidth: 1440, innerHeight: 900, addEventListener() {} }
  });
  function open(url) {
    handlers['show.bs.modal']({ relatedTarget: { getAttribute(name) {
      return { 'data-slide-preview-url': url, 'data-slide-preview-title': 'Saved slide', 'data-canvas-width': '1080', 'data-canvas-height': '1920' }[name];
    } } });
  }
  open('/media/thumbnails/slides/slide-7.png');
  assert.equal(image.src, '/media/thumbnails/slides/slide-7.full.png');
  assert.equal(image.hidden, false);
  assert.equal(title.textContent, 'Slide preview: Saved slide');
  handlers['image:error']();
  assert.equal(image.src, '/media/thumbnails/slides/slide-7.png');
  handlers['image:error']();
  assert.equal(image.hidden, true);
  assert.equal(empty.hidden, false);
  open('/media/thumbnails/slides/slide-8.png');
  handlers['hidden.bs.modal']();
  assert.equal(image.src, undefined);
  assert.equal(image.hidden, true);
  open('');
  assert.equal(image.src, undefined);
  assert.equal(empty.hidden, false);
});

test('thumbnail capture retains a full-size preview alongside the small thumbnail', async () => {
  const path = require('node:path');
  const os = require('node:os');
  const sharp = require('sharp');
  const modulePath = require.resolve('../src/web/lib/media/slide-thumbnails');
  const localRequire = require('node:module').createRequire(modulePath);
  const mediaDir = await fs.promises.mkdtemp(path.join(os.tmpdir(), 'pulse-preview-'));
  const page = {
    async setViewport() {},
    async setExtraHTTPHeaders() {},
    async goto() { return { status() { return 200; } }; },
    async waitForFunction() {},
    async evaluate() {},
    async $() { return { async boundingBox() { return { x: 0, y: 0, width: 1080, height: 1920 }; } }; },
    async screenshot(options) {
      await sharp({ create: { width: options.clip.width, height: options.clip.height, channels: 3, background: '#123456' } }).png().toFile(options.path);
    },
    async close() {}
  };
  const sandbox = {
    module: { exports: {} },
    process: { env: {} },
    setTimeout(callback) { callback(); },
    require(name) {
      if (name === 'fs') return { ...fs, existsSync(candidate) { return candidate === '/usr/bin/chromium' || fs.existsSync(candidate); } };
      if (name === 'puppeteer-core') return { async launch() { return { async newPage() { return page; }, async close() {} }; } };
      return localRequire(name);
    }
  };
  sandbox.require.resolve = localRequire.resolve;
  vm.runInNewContext(fs.readFileSync(modulePath, 'utf8'), sandbox);
  const queries = [];
  try {
    const options = {
      mediaDir,
      slideId: 7,
      baseUrl: 'http://localhost:8080',
      pool: { async query(sql, params) { queries.push({ sql, params }); } },
      common: { async fetchSlideById() { return { id: 7, template: { canvas_size_width: 1080, canvas_size_height: 1920 } }; } }
    };
    for (let attempt = 0; attempt < 2; attempt += 1) {
      const result = await sandbox.module.exports.captureSlideThumbnail(options);
      const large = await sharp(result.fullSizePath).metadata();
      const small = await sharp(result.filePath).metadata();
      assert.equal(large.width, 1080);
      assert.equal(large.height, 1920);
      assert.ok(small.width <= 480 && small.height <= 270);
      assert.equal(result.thumbnailPath, '/media/thumbnails/slides/slide-7.png');
      assert.equal(fs.existsSync(result.fullSizePath.replace('.full.png', '.full.tmp.png')), false);
    }
    assert.equal(queries.length, 2);
  } finally {
    await fs.promises.rm(mediaDir, { recursive: true, force: true });
  }
});

test('preview sanitizers preserve entity-quoted font families without double escaping', () => {
  const entities = { apos: "'", quot: '"', amp: '&', lt: '<', gt: '>' };
  const sandbox = {
    window: {},
    document: {
      createElement(tag) {
        assert.equal(tag, 'textarea');
        return {
          set innerHTML(value) {
            this.value = value.replace(/&(#x[\da-f]+|#\d+|apos|quot|amp|lt|gt);/gi, (_match, entity) => {
              if (entity[0] !== '#') return entities[entity];
              return String.fromCodePoint(entity[1].toLowerCase() === 'x' ? parseInt(entity.slice(2), 16) : Number(entity.slice(1)));
            });
          }
        };
      }
    }
  };
  vm.runInNewContext(fs.readFileSync(require.resolve('../src/web/public/js/regions/region-utils'), 'utf8'), sandbox);

  for (const sanitize of [sandbox.window.pulseRegionUtils.sanitizePreviewHtml, sandbox.window.pulseRegionUtils.sanitizeRichText]) {
    for (const quotes of ["'Ubuntu Regular'", '&#39;Ubuntu Regular&#39;', '&quot;Ubuntu Regular&quot;']) {
      const markup = sanitize('<span style="font-family: ' + quotes + ';">Player</span>');
      assert.doesNotMatch(markup, /&amp;#39;|&amp;quot;/);
      assert.equal(sanitize(markup), markup);
      assert.match(markup, /font-family: (?:&#39;Ubuntu Regular&#39;|&quot;Ubuntu Regular&quot;);/);
    }
    const unsafe = sanitize('<a href="java&#115;cript:alert(1)" style="background:u&#114;l(test)">Player</a>');
    assert.doesNotMatch(unsafe, /href=|style=/);
  }
});

test('page route wiring preserves the configured media directory for popup font stylesheets', () => {
  let pageDependencies;
  const sandbox = {
    module: { exports: {} },
    require(name) {
      if (name === '#src/rbac') return { PERMISSIONS: [], normalizePermissionKeys: value => value };
      return function (_app, dependencies) {
        if (name === '#src/web/routes/admin/pages') pageDependencies = dependencies;
      };
    }
  };
  vm.runInNewContext(fs.readFileSync(require.resolve('../src/web/routes/register'), 'utf8'), sandbox);
  sandbox.module.exports.registerRoutes({}, {
    mediaDir: '/configured/signage-media',
    playerActionService: {}
  });
  assert.equal(pageDependencies.mediaDir, '/configured/signage-media');
});

test('thumbnail payload passes saved region geometry and content to the popup renderer', () => {
  const payload = buildThumbnailPreviewPayload({
    template: {
      canvas_size_width: 1280,
      canvas_size_height: 720,
      regions: [{ id: 14, region_key: 'clock', region_type: 'time-date', x: 20, y: 30, width: 400, height: 90, z_index: 3 }]
    },
    content: { clock: { value: '{{hh}}:{{mm}}', timezone: 'Europe/London' } }
  });

  assert.equal(payload.regions[0].x, 20);
  assert.equal(payload.regions[0].width, 400);
  assert.equal(payload.regions[0].content.value, '{{hh}}:{{mm}}');
  assert.equal(payload.existingContent.clock.timezone, 'Europe/London');
});

test('thumbnail popup respects template defaults, read-only regions and explicit slide content', () => {
  const payload = buildThumbnailPreviewPayload({
    template: {
      canvas_size_width: 1280,
      canvas_size_height: 720,
      regions: [
        { region_key: 'logo', region_type: 'image', read_only: 1, default_content: { value: '/media/uploads/template-logo.png' }, x: 0, y: 0, width: 200, height: 100 },
        { region_key: 'heading', region_type: 'text', default_content: JSON.stringify({ value: 'Template heading' }), x: 0, y: 100, width: 400, height: 100 },
        { region_key: 'custom', region_type: 'text', default_content: { value: 'Default custom' }, x: 0, y: 200, width: 400, height: 100 },
        { region_key: 'blank', region_type: 'text', default_content: { value: 'Do not restore' }, x: 0, y: 300, width: 400, height: 100 }
      ]
    },
    content: {
      logo: { value: '/media/uploads/stale-logo.png' },
      custom: { value: 'Slide heading' },
      blank: { value: '' }
    }
  });

  assert.equal(payload.regions[0].content.value, '/media/uploads/template-logo.png');
  assert.equal(payload.regions[0].content.type, 'image');
  assert.equal(payload.regions[1].content.value, 'Template heading');
  assert.equal(payload.regions[2].content.value, 'Slide heading');
  assert.equal(payload.regions[3].content.value, '');
  assert.equal(payload.existingContent.logo.value, '/media/uploads/template-logo.png');
  assert.equal(payload.existingContent.heading.value, 'Template heading');
  assert.match(payload.html, /template-logo\.png/);
  assert.match(payload.html, /Template heading/);
  assert.match(payload.html, /Slide heading/);
  assert.doesNotMatch(payload.html, /stale-logo|Default custom|Do not restore/);
});

test('editor and popup load the same browser-compatible content resolver', () => {
  const sandbox = { window: {} };
  vm.runInNewContext(fs.readFileSync(require.resolve('../src/web/public/js/shared/region-content'), 'utf8'), sandbox);
  const region = { region_key: 'brand', region_type: 'text', read_only: true, default_content: { value: 'Shared brand' } };
  const saved = { brand: { value: 'Stale brand' } };
  assert.equal(JSON.stringify(sandbox.window.pulseRegionContent.resolveRegionContent(region, saved)), JSON.stringify(resolveRegionContent(region, saved)));
  assert.ok(getRegionEditorScripts().includes('js/shared/region-content.js'));
  const editorSource = fs.readFileSync(require.resolve('../src/web/public/js/slides/slide-form.js'), 'utf8');
  assert.match(editorSource, /window\.pulseRegionContent\.resolveRegionContent\(region, existingContent\)/);
});

test('thumbnail regions use shared region renderers and their source context', () => {
  const calls = [];
  const registry = {
    get(type) {
      return {
        renderPreview(...args) {
          calls.push({ type, args });
          return '<span>' + type + '</span>';
        }
      };
    }
  };
  const apiSources = [{ id: 8, responseJson: [{ name: 'Ada' }] }];
  const payload = {
    regions: [
      { id: 1, region_key: 'clock', region_type: 'time-date', x: 20, y: 12, width: 200, height: 80, z_index: 4, content: { value: '{{hh}}:{{mm}}', timezone: 'UTC' } },
      { id: 2, region_key: 'donations', region_type: 'api', x: 220, y: 12, width: 300, height: 80, z_index: 2, content: { source_id: 8, value: '{{name}}' } }
    ],
    apiSources: apiSources,
    rssFeeds: [],
    weatherLocations: [],
    timetableGroups: []
  };

  const html = render(payload, registry);

  assert.match(html, /data-region-key="clock"[^>]*><span>time-date<\/span>/);
  assert.match(html, /data-region-key="donations"[^>]*><span>api<\/span>/);
  assert.equal(calls[0].args[3], 1);
  assert.equal(calls[1].args[2].sources, apiSources);
});

test('thumbnail time/date uses the editor renderer to expand current-time tokens', () => {
  const registry = {
    get(type) {
      return type === 'time-date' ? loadEditorTimeDateModule() : null;
    }
  };
  const html = render({
    regions: [{
      id: 4,
      region_key: 'clock',
      region_type: 'time-date',
      x: 0,
      y: 0,
      width: 320,
      height: 80,
      content: { value: '{{hh}}:{{mm}}', timezone: 'UTC' }
    }]
  }, registry);

  assert.match(html, /<div class="template-region time-date"/);
  assert.match(html, /class="template-region-text-scale"[^>]*>\d{2}:\d{2}<\/div>/);
});