summaryrefslogtreecommitdiff
path: root/background.js
blob: 26968879229b3cf0e02bcdead7056611d4980d18 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
let SKIP_FORCE_THEMING_KEY = "skipForceThemingList";
let SKIP_THEMING_KEY = "skipThemingList";
let BROWSER_STORAGE_KEY = "transparentZenSettings";
let logging = true; // Enable logging for debugging

// Create a cache for pre-processed CSS to speed up repeated visits
const cssCache = new Map();
const activeTabs = new Map();

// Default settings to use when values are missing
const DEFAULT_SETTINGS = {
  enableStyling: true, // Enable styling globally
  autoUpdate: true, // Auto-update styles
  forceStyling: false, // Force styling on sites without themes
  whitelistMode: false, // Use blacklist mode by default for force styling
  whitelistStyleMode: false, // Use blacklist mode by default for regular styling
  disableTransparency: false, // Don't disable transparency by default
};

// Helper function to normalize hostnames by removing www. prefix
function normalizeHostname(hostname) {
  return hostname.startsWith("www.") ? hostname.substring(4) : hostname;
}

// Ensure all required settings exist
function ensureDefaultSettings(settings = {}) {
  const result = { ...settings };

  // Apply default values for any missing settings
  for (const [key, defaultValue] of Object.entries(DEFAULT_SETTINGS)) {
    if (result[key] === undefined) {
      result[key] = defaultValue;
    }
  }

  return result;
}

// Preload styles for faster injection
async function preloadStyles() {
  try {
    const data = await browser.storage.local.get([
      "styles",
      BROWSER_STORAGE_KEY,
    ]);

    // Ensure we have all required settings with defaults
    const settings = ensureDefaultSettings(data[BROWSER_STORAGE_KEY] || {});

    // Save the validated settings back to storage if any defaults were applied
    if (
      JSON.stringify(settings) !== JSON.stringify(data[BROWSER_STORAGE_KEY])
    ) {
      if (logging)
        console.log("Missing settings detected, applying defaults:", settings);
      await browser.storage.local.set({ [BROWSER_STORAGE_KEY]: settings });
    }

    // No point in preloading if styling is disabled
    if (settings.enableStyling === false) return;

    // Clear the cache when reloaded to ensure fresh styles
    cssCache.clear();

    if (data.styles?.website) {
      for (const [website, features] of Object.entries(data.styles.website)) {
        // Process and store default CSS for each website (with all features enabled)
        let combinedCSS = "";
        for (const [feature, css] of Object.entries(features)) {
          combinedCSS += css + "\n";
        }
        cssCache.set(website.replace(".css", ""), combinedCSS);
      }
      if (logging) console.log("Styles preloaded for faster injection");
    }
  } catch (error) {
    console.error("Error preloading styles:", error);
  }
}

// Handle web requests - allow injecting CSS before any content is loaded
browser.webNavigation.onBeforeNavigate.addListener((details) => {
  if (details.frameId === 0) {
    // Only for main frame
    // Track active navigations
    activeTabs.set(details.tabId, details.url);

    // Pre-fetch any styling needed for this URL
    const url = new URL(details.url);
    const normalizedHostname = normalizeHostname(url.hostname);
    prepareStylesForUrl(normalizedHostname, details.tabId);
  }
});

// Listen for content scripts announcing they're ready
browser.runtime.onMessage.addListener(async (message, sender) => {
  if (message.action === "contentScriptReady" && message.hostname) {
    try {
      // Look for cached styles for this hostname or its domain match
      const normalizedHostname = normalizeHostname(message.hostname);

      // Get settings to check if styling is enabled
      const settingsData = await browser.storage.local.get(BROWSER_STORAGE_KEY);
      const settings = ensureDefaultSettings(
        settingsData[BROWSER_STORAGE_KEY] || {}
      );

      if (settings.enableStyling === false) return;

      const css = await getStylesForHostname(normalizedHostname, settings);

      // If we found matching CSS, send it immediately to the content script
      if (css) {
        browser.tabs
          .sendMessage(sender.tab.id, {
            action: "applyStyles",
            css: css,
          })
          .catch((err) => {
            if (logging) console.log("Failed to send immediate CSS:", err);
          });
      }
    } catch (error) {
      console.error("Error handling content script ready message:", error);
    }
  } else if (message.action === "enableAutoUpdate") {
    startAutoUpdate();
    return true;
  } else if (message.action === "disableAutoUpdate") {
    stopAutoUpdate();
    return true;
  }

  return false;
});

// Get appropriate styles for a hostname based on all rules
async function getStylesForHostname(hostname, settings) {
  // Ensure all required settings have defaults before proceeding
  settings = ensureDefaultSettings(settings);

  console.log("DEBUG: Finding styles for hostname:", hostname);

  // Check for exact matches first (highest priority)
  if (cssCache.has(hostname)) {
    console.log("DEBUG: Found exact hostname match in cache");
    return cssCache.get(hostname);
  } else if (cssCache.has(`www.${hostname}`)) {
    console.log("DEBUG: Found www prefix match in cache");
    return cssCache.get(`www.${hostname}`);
  } else {
    // Check for wildcard matches (+domain.com) and suffix matches (-domain.com)
    for (const [cachedSite, cachedCSS] of cssCache.entries()) {
      // Handle wildcard domain prefix matches (+example.com)
      if (cachedSite.startsWith("+")) {
        const baseSite = cachedSite.slice(1);
        // Ensure we're matching with proper domain boundary (dot or exact match)
        if (hostname === baseSite || hostname.endsWith(`.${baseSite}`)) {
          console.log(
            `DEBUG: Found wildcard match: ${cachedSite} for ${hostname}`
          );
          return cachedCSS;
        }
      }
      // Handle TLD suffix matches (-domain.com)
      else if (cachedSite.startsWith("-")) {
        const baseSite = cachedSite.slice(1);

        // Extract domain name without the TLD
        // For cached site: Use everything before the last dot(s)
        const cachedDomain = baseSite.split(".").slice(0, -1).join(".");

        // For hostname: Similarly extract the domain without the TLD
        const hostParts = hostname.split(".");
        const hostDomain =
          hostParts.length > 1 ? hostParts.slice(0, -1).join(".") : hostname;

        console.log(
          `DEBUG: Comparing domains - cached: ${cachedDomain}, host: ${hostDomain}`
        );

        if (cachedDomain && hostDomain && hostDomain === cachedDomain) {
          console.log(
            `DEBUG: Found TLD suffix match: ${cachedSite} for ${hostname}`
          );
          return cachedCSS;
        }
      }
      // Regular subdomain handling (exact match already checked above)
      else if (
        cachedSite !== hostname &&
        cachedSite !== `www.${hostname}` &&
        hostname.endsWith(`.${cachedSite}`) &&
        !cachedSite.startsWith("-")
      ) {
        // Only match subdomains, not partial domain names
        console.log(
          `DEBUG: Found subdomain match: ${cachedSite} for ${hostname}`
        );
        return cachedCSS;
      }
    }

    // Check for forced styles
    if (settings.forceStyling) {
      const skipListData = await browser.storage.local.get(
        SKIP_FORCE_THEMING_KEY
      );
      const siteList = skipListData[SKIP_FORCE_THEMING_KEY] || [];
      const isWhitelistMode = settings.whitelistMode || false;
      const siteInList = siteList.includes(hostname);

      // In whitelist mode: apply only if site is in the list
      // In blacklist mode: apply only if site is NOT in the list
      if (
        (isWhitelistMode && siteInList) ||
        (!isWhitelistMode && !siteInList)
      ) {
        if (cssCache.has("example.com")) {
          return cssCache.get("example.com");
        } else {
          return "/* Default fallback CSS */";
        }
      }
    }
  }

  return null;
}

// Prepare styles for a URL that's about to load
async function prepareStylesForUrl(hostname, tabId) {
  try {
    const settingsData = await browser.storage.local.get(BROWSER_STORAGE_KEY);

    // Ensure all required settings have defaults
    const settings = ensureDefaultSettings(
      settingsData[BROWSER_STORAGE_KEY] || {}
    );

    if (settings.enableStyling === false) return;

    const css = await getStylesForHostname(hostname, settings);

    if (css && tabId) {
      // Store the CSS to be ready as soon as the content script connects
      activeTabs.set(tabId, {
        hostname: hostname,
        css: css,
      });
    }
  } catch (error) {
    console.error("Error preparing styles for URL:", error);
  }
}

async function applyCSSToTab(tab) {
  console.log("DEBUG: applyCSSToTab called for tab", tab.id, "URL:", tab.url);

  try {
    const url = new URL(tab.url);
    const originalHostname = url.hostname;
    const hostname = normalizeHostname(originalHostname);
    console.log(
      "DEBUG: Processing hostname:",
      hostname,
      "(original:",
      originalHostname,
      ")"
    );

    const settings = await browser.storage.local.get(BROWSER_STORAGE_KEY);

    // Ensure defaults for any missing settings
    const globalSettings = ensureDefaultSettings(
      settings[BROWSER_STORAGE_KEY] || {}
    );

    // Save back any missing defaults
    if (
      JSON.stringify(globalSettings) !==
      JSON.stringify(settings[BROWSER_STORAGE_KEY])
    ) {
      await browser.storage.local.set({
        [BROWSER_STORAGE_KEY]: globalSettings,
      });
      if (logging)
        console.log("Applied missing default settings during CSS application");
    }

    console.log("DEBUG: Global settings:", JSON.stringify(globalSettings));

    const skipStyleListData = await browser.storage.local.get(SKIP_THEMING_KEY);
    const skipStyleList = skipStyleListData[SKIP_THEMING_KEY] || [];

    // Use default from settings if not explicitly set
    const styleMode =
      globalSettings.whitelistStyleMode ?? DEFAULT_SETTINGS.whitelistStyleMode;

    if (
      globalSettings.enableStyling === false ||
      (!styleMode && skipStyleList.includes(hostname)) ||
      (styleMode && !skipStyleList.includes(hostname))
    ) {
      console.log("DEBUG: Styling is disabled, exiting early");
      return;
    }

    const data = await browser.storage.local.get("styles");
    console.log(
      "DEBUG: Loaded styles count:",
      Object.keys(data.styles?.website || {}).length
    );

    const skipListData = await browser.storage.local.get(
      SKIP_FORCE_THEMING_KEY
    );
    const siteList = skipListData[SKIP_FORCE_THEMING_KEY] || [];
    console.log("DEBUG: Skip/Whitelist contains", siteList.length, "sites");
    console.log("DEBUG: Current site in list:", siteList.includes(hostname));

    const isWhitelistMode = globalSettings.whitelistMode || false;
    console.log("DEBUG: Using whitelist mode:", isWhitelistMode);

    // Find the best matching CSS file
    let bestMatch = null;
    let bestMatchLength = 0;
    let matchType = "none";

    for (const key of Object.keys(data.styles?.website || {})) {
      const siteName = key.replace(".css", "");

      // For site names in the styles list, also normalize by removing www. if present
      const normalizedSiteName = normalizeHostname(siteName);

      // Exact match has highest priority - compare normalized hostnames
      if (hostname === normalizedSiteName) {
        bestMatch = key;
        matchType = "exact";
        console.log("DEBUG: Found exact match:", key);
        break;
      }

      // Then check wildcard matches
      if (siteName.startsWith("+")) {
        const baseSite = siteName.slice(1);
        // Ensure we're matching with proper domain boundary
        if (
          (hostname === baseSite || hostname.endsWith(`.${baseSite}`)) &&
          baseSite.length > bestMatchLength
        ) {
          bestMatch = key;
          bestMatchLength = baseSite.length;
          matchType = "wildcard";
          console.log(
            "DEBUG: Found wildcard match:",
            key,
            "with length",
            baseSite.length
          );
        }
      }
      // Check TLD suffix matches (-domain.com) - fixed implementation
      else if (siteName.startsWith("-")) {
        const baseSite = siteName.slice(1);

        // Extract domain name without the TLD
        // For cached site: Use everything before the last dot(s)
        const cachedDomain = baseSite.split(".").slice(0, -1).join(".");

        // For hostname: Similarly extract the domain without the TLD
        const hostParts = hostname.split(".");
        const hostDomain =
          hostParts.length > 1 ? hostParts.slice(0, -1).join(".") : hostname;

        console.log(
          `DEBUG: Comparing domains - cached: ${cachedDomain}, host: ${hostDomain}`
        );

        // Match if the domain part (without TLD) matches
        if (cachedDomain && hostDomain && hostDomain === cachedDomain) {
          // Only update if it's a better match (longer domain name part)
          if (cachedDomain.length > bestMatchLength) {
            bestMatch = key;
            bestMatchLength = cachedDomain.length;
            matchType = "suffix";
            console.log(
              "DEBUG: Found TLD suffix match:",
              key,
              "for",
              hostname,
              "with domain part:",
              cachedDomain
            );
          }
        }
      }
      // Last, check subdomain matches with proper domain boundary
      else if (
        hostname !== normalizedSiteName &&
        hostname.endsWith(`.${normalizedSiteName}`) &&
        !siteName.startsWith("-") &&
        normalizedSiteName.length > bestMatchLength
      ) {
        bestMatch = key;
        bestMatchLength = normalizedSiteName.length;
        matchType = "subdomain";
        console.log(
          "DEBUG: Found domain suffix match:",
          key,
          "with length",
          normalizedSiteName.length
        );
      }
    }

    // If we found a direct match, use it
    if (bestMatch) {
      console.log("DEBUG: Using match:", bestMatch, "of type:", matchType);
      await applyCSS(tab.id, hostname, data.styles.website[bestMatch]);
      return;
    } else {
      console.log("DEBUG: No direct style match found for:", hostname);
    }

    // Otherwise, check if we should apply forced styling
    console.log("DEBUG: Force styling enabled:", globalSettings.forceStyling);
    if (globalSettings.forceStyling) {
      const siteInList = siteList.includes(hostname);
      console.log("DEBUG: Site in list:", siteInList);

      // Use default from settings if not explicitly set
      const isWhitelistMode =
        globalSettings.whitelistMode ?? DEFAULT_SETTINGS.whitelistMode;
      console.log("DEBUG: Using whitelist mode:", isWhitelistMode);

      // In whitelist mode: apply only if site is in the list
      // In blacklist mode: apply only if site is NOT in the list
      const shouldApplyForcedStyling =
        (isWhitelistMode && siteInList) || (!isWhitelistMode && !siteInList);
      console.log(
        "DEBUG: Should apply forced styling:",
        shouldApplyForcedStyling,
        "(Whitelist mode:",
        isWhitelistMode,
        ", Site in list:",
        siteInList,
        ")"
      );

      if (shouldApplyForcedStyling) {
        if (data.styles.website["example.com.css"]) {
          console.log("DEBUG: Applying forced styling with example.com.css");
          await applyCSS(
            tab.id,
            hostname,
            data.styles.website["example.com.css"]
          );
        } else {
          console.log("DEBUG: example.com.css not found in styles");
        }
      } else {
        console.log("DEBUG: Skipping forced styling due to site list rules");
      }
    } else {
      console.log("DEBUG: Force styling is disabled, no styles applied");
    }
  } catch (error) {
    console.error(`DEBUG ERROR: Error applying CSS:`, error);
  }
}

async function applyCSS(tabId, hostname, features) {
  console.log("DEBUG: applyCSS called for tab", tabId, "hostname", hostname);

  if (!features) {
    console.log("DEBUG: No features to apply, exiting early");
    return;
  }

  console.log("DEBUG: Features count:", Object.keys(features).length);

  const settingsData = await browser.storage.local.get(BROWSER_STORAGE_KEY);

  // Ensure defaults for any missing settings
  const globalSettings = ensureDefaultSettings(
    settingsData[BROWSER_STORAGE_KEY] || {}
  );

  console.log(
    "DEBUG: Global settings in applyCSS:",
    JSON.stringify(globalSettings)
  );

  // UPDATED: Use normalized hostname for consistent settings retrieval
  const normalizedHostname = normalizeHostname(hostname);
  const siteKey = `transparentZenSettings.${normalizedHostname}`;
  const siteData = await browser.storage.local.get(siteKey);
  const featureSettings = siteData[siteKey] || {};

  console.log(
    "DEBUG: Site-specific settings from normalized key:",
    siteKey,
    JSON.stringify(featureSettings)
  );

  let combinedCSS = "";
  let includedFeatures = 0;
  let skippedTransparencyFeatures = 0;
  let skippedDisabledFeatures = 0;

  for (const [feature, css] of Object.entries(features)) {
    const isTransparencyFeature = feature
      .toLowerCase()
      .includes("transparency");
    // Skip any transparency feature if disableTransparency is enabled globally
    if (globalSettings.disableTransparency && isTransparencyFeature) {
      console.log(`DEBUG: Skipping transparency feature: ${feature}`);
      skippedTransparencyFeatures++;
      continue;
    }

    const isFeatureEnabled = featureSettings[feature] !== false;
    if (isFeatureEnabled) {
      combinedCSS += css + "\n";
      includedFeatures++;
      console.log(`DEBUG: Including feature: ${feature}`);
    } else {
      console.log(`DEBUG: Feature disabled in site settings: ${feature}`);
      skippedDisabledFeatures++;
    }
  }

  console.log(
    `DEBUG: CSS Summary - included: ${includedFeatures}, skipped transparency: ${skippedTransparencyFeatures}, skipped disabled: ${skippedDisabledFeatures}`
  );

  if (combinedCSS) {
    try {
      // Try to send via messaging (most reliable for instant application)
      console.log(
        `DEBUG: Sending styles to tab ${tabId} via messaging (${combinedCSS.length} bytes)`
      );
      await browser.tabs.sendMessage(tabId, {
        action: "applyStyles",
        css: combinedCSS,
      });
    } catch (e) {
      // Fallback to insertCSS if messaging fails
      console.log(
        `DEBUG: Messaging failed, falling back to insertCSS: ${e.message}`
      );
      await browser.tabs.insertCSS(tabId, {
        code: combinedCSS,
        runAt: "document_start",
      });
    }
    console.log(`DEBUG: Successfully injected custom CSS for ${hostname}`);
  } else {
    console.log(`DEBUG: No CSS to inject after filtering features`);
  }
}

let autoUpdateInterval;

function startAutoUpdate() {
  if (logging) console.log("startAutoUpdate called");
  if (autoUpdateInterval) clearInterval(autoUpdateInterval);
  autoUpdateInterval = setInterval(refetchCSS, 2 * 60 * 60 * 1000);
}

function stopAutoUpdate() {
  if (logging) console.log("stopAutoUpdate called");
  if (autoUpdateInterval) clearInterval(autoUpdateInterval);
}

async function refetchCSS() {
  if (logging) console.log("refetchCSS called");
  try {
    const response = await fetch(
      "https://sameerasw.github.io/my-internet/styles.json",
      { headers: { "Cache-Control": "no-cache" } }
    );
    if (!response.ok) throw new Error("Failed to fetch styles.json");
    const styles = await response.json();
    await browser.storage.local.set({ styles });

    // Check if we need to initialize default settings
    const settingsData = await browser.storage.local.get(BROWSER_STORAGE_KEY);
    if (!settingsData[BROWSER_STORAGE_KEY]) {
      // Initialize default settings if none exist
      const defaultSettings = {
        enableStyling: true,
        autoUpdate: true,
        forceStyling: false,
        whitelistMode: false,
        whitelistStyleMode: false,
        lastFetchedTime: Date.now(),
      };

      // Save default settings
      await browser.storage.local.set({
        [BROWSER_STORAGE_KEY]: defaultSettings,
      });
      console.info("Initialized default settings during first fetch");
    } else {
      // Just update the lastFetchedTime
      await browser.storage.local.set({ lastFetchedTime: Date.now() });
    }

    console.info("All styles refetched and updated from GitHub.");

    // Preload the new styles
    preloadStyles();
  } catch (error) {
    console.error("Error refetching styles:", error);
  }
}

// Create a directory to store CSS files
async function initializeExtension() {
  // Check and initialize default settings
  const data = await browser.storage.local.get(BROWSER_STORAGE_KEY);
  const currentSettings = data[BROWSER_STORAGE_KEY] || {};
  const validatedSettings = ensureDefaultSettings(currentSettings);

  // If we had to apply any defaults, save them
  if (JSON.stringify(validatedSettings) !== JSON.stringify(currentSettings)) {
    console.info(
      "Initializing missing settings with defaults:",
      validatedSettings
    );
    await browser.storage.local.set({
      [BROWSER_STORAGE_KEY]: validatedSettings,
    });
  }

  // Ensure empty lists exist
  const skipForceData = await browser.storage.local.get(SKIP_FORCE_THEMING_KEY);
  if (!skipForceData[SKIP_FORCE_THEMING_KEY]) {
    await browser.storage.local.set({ [SKIP_FORCE_THEMING_KEY]: [] });
  }

  const skipThemingData = await browser.storage.local.get(SKIP_THEMING_KEY);
  if (!skipThemingData[SKIP_THEMING_KEY]) {
    await browser.storage.local.set({ [SKIP_THEMING_KEY]: [] });
  }

  // Preload styles immediately
  await preloadStyles();

  // Initialize auto-update based on stored settings
  if (validatedSettings.autoUpdate) {
    startAutoUpdate();
  }
}

// Listen for specific navigation events to apply CSS as early as possible
browser.webNavigation.onCommitted.addListener((details) => {
  if (details.frameId === 0) {
    browser.tabs
      .get(details.tabId)
      .then((tab) => {
        applyCSSToTab(tab);
      })
      .catch((err) => {
        console.error("Error getting tab info:", err);
      });
  }
});

// Application start
initializeExtension();