File size: 5,019 Bytes
ca978e6 | 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 | /**
* Bayan — Analysis Controller (Phase 7.1 Simplified)
*
* Responsibilities (ONLY):
* - Adaptive debounce (2-tier: normal / large text)
* - Stale request cancellation
* - Text validation
* - Message passing to background.js
*
* Does NOT own:
* - Caching (background.js)
* - Retry logic (background.js)
* - Timeout (background.js)
* - Network (background.js)
*
* Requires: BAYAN (shared/constants.js)
*/
// eslint-disable-next-line no-unused-vars
const BayanController = (() => {
'use strict';
// ── Debounce config ──
const DEBOUNCE_NORMAL = 500;
const DEBOUNCE_LARGE = 1000;
const LARGE_TEXT_THRESHOLD = 2000;
// ── State ──
let _debounceTimer = null;
let _inflight = false;
// ── Protected site check ──
const _isProtected = BAYAN.PROTECTED_HOSTS.includes(window.location.hostname);
// ══════════════════════════════════════════════════════════
// Text validation
// ══════════════════════════════════════════════════════════
function hasArabic(text) {
if (!text || text.length < BAYAN.MIN_TEXT_LENGTH) return false;
const arabicChars = (text.match(/[\u0600-\u06FF]/g) || []).length;
return arabicChars >= BAYAN.MIN_ARABIC_CHARS;
}
function validateText(text) {
if (!text) return { valid: false, reason: 'empty' };
if (text.length < BAYAN.MIN_TEXT_LENGTH) return { valid: false, reason: 'too_short' };
if (text.length > BAYAN.MAX_TEXT_LENGTH) return { valid: false, reason: 'too_long' };
if (!hasArabic(text)) return { valid: false, reason: 'no_arabic' };
return { valid: true };
}
// ══════════════════════════════════════════════════════════
// Core: debounced analysis via background bridge
// ══════════════════════════════════════════════════════════
/**
* Schedule a debounced analysis.
* Background.js owns caching, retry, and timeout.
*
* @param {string} text
* @param {function(Object|null): void} onResult
* @param {function(): string} getCurrentText — staleness checker
*/
function scheduleAnalysis(text, onResult, getCurrentText) {
if (_debounceTimer) {
clearTimeout(_debounceTimer);
_debounceTimer = null;
}
if (!validateText(text).valid) {
onResult(null);
return;
}
const delay = text.length > LARGE_TEXT_THRESHOLD ? DEBOUNCE_LARGE : DEBOUNCE_NORMAL;
_debounceTimer = setTimeout(() => {
_debounceTimer = null;
// Staleness check: text changed during debounce
if (getCurrentText() !== text) return;
executeAnalysis(text, onResult, getCurrentText);
}, delay);
}
/**
* Send analysis request to background.js.
* No timeout, no retry, no cache — background handles all of that.
*/
function executeAnalysis(text, onResult, getCurrentText) {
_inflight = true;
chrome.runtime.sendMessage({ type: 'INLINE_ANALYZE', text }, (response) => {
_inflight = false;
// Extension context invalidated (e.g., extension reloaded)
if (chrome.runtime.lastError) {
console.warn('[Bayan Controller]', chrome.runtime.lastError.message);
onResult(null);
return;
}
// Staleness check: text changed during fetch
if (getCurrentText() !== text) return;
if (!response || response.error) {
onResult(null);
return;
}
onResult(response.data);
});
}
// ══════════════════════════════════════════════════════════
// Cancellation
// ══════════════════════════════════════════════════════════
function cancelAll() {
if (_debounceTimer) {
clearTimeout(_debounceTimer);
_debounceTimer = null;
}
_inflight = false;
}
function destroy() {
cancelAll();
}
// ══════════════════════════════════════════════════════════
// Public API
// ══════════════════════════════════════════════════════════
return {
scheduleAnalysis,
cancelAll,
destroy,
validateText,
hasArabic,
isProtectedSite() { return _isProtected; },
isInFlight() { return _inflight; },
};
})();
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