Function detectLanguage

entrypoints/offscreen/main.ts:52–89

(text: string)

// 检测文本语言
async function detectLanguage(text: string): Promise<string> {
    try {
        // 尝试使用新的 API
        if ('translation' in self && 'createDetector' in (self as any).translation) {
            const detector = await (self as any).translation.createDetector();
            const results = await detector.detect(text);
            const detected = results.length > 0 ? results[0].detectedLanguage : 'en';
            console.log('新 API 检测结果:', detected);
            return detected;
        }
        
        // 尝试使用旧的 API
        if ('LanguageDetector' in self) {
            const detector = await (self as any).LanguageDetector.create();
            const results = await detector.detect(text);
            const detected = results.length > 0 ? results[0].detectedLanguage : 'en';
            console.log('旧 API 检测结果:', detected);
            return detected;
        }
    } catch (error) {
        console.warn('Language detection failed:', error);
    }
    
    // 回退到简单检测
    const chineseRegex = /[\u4e00-\u9fff]/;
    const japaneseRegex = /[\u3040-\u309f\u30a0-\u30ff]/;
    const koreanRegex = /[\uac00-\ud7af]/;
    
    if (chineseRegex.test(text)) {
        return 'zh';
    } else if (japaneseRegex.test(text)) {
        return 'ja';
    } else if (koreanRegex.test(text)) {
        return 'ko';
    } else {
        return 'en';
    }
}

// 执行翻译
async function performTranslation(text: string, fromLang: string, toLang: string): Promise<string> {