YtDLS: YouTube Dual Language Subtitle (Modified)

Enhances YouTube with dual language subtitles.
От 15.08.2023. Виж последната версия.
За поддръжка посети сайта на автора, задай въпрос, напиши отзив, или докладвай скрипта.
Пренася редовете
// ==UserScript==
// @name                YtDLS: YouTube Dual Language Subtitle (Modified)
// @name:zh-CN          YtDLS: Youtube 双语字幕（改）
// @name:zh-TW          YtDLS: Youtube 雙語字幕（改）
// @version             2.0.1
// @description         Enhances YouTube with dual language subtitles.
// @description:zh-CN   为YouTube添加双语字幕增强功能。
// @description:zh-TW   增強YouTube的雙語字幕功能。
// @author              CY Fung
// @author              Coink Wang
// @match               https://www.youtube.com/*
// @require             https://cdn.jsdelivr.net/npm/[email protected]/dist/ajaxhook.min.js
// @grant               none
// @unwrap
// @allFrames           true
// @inject-into         page
// @run-at              document-start
// @namespace           Y2BDoubleSubs
// @license             MIT
// @supportURL          https://github.com/cyfung1031/Y2BDoubleSubs/tree/translation-api
// ==/UserScript==

/* global ah */

(function () {
    let localeLang = document.documentElement.lang || navigator.language || 'en' // follow the language used in YouTube Page
    // localeLang = 'zh'  // uncomment this line to define the language you wish here
    let enableFullWidthSpaceSeparation = true
    function encodeFullwidthSpace(text) {
        if (!enableFullWidthSpaceSeparation) return text
        return text.replace(/\n/g, '\n1\n').replace(/\u3000/g, '\n2\n')
    }
    function decodeFullwidthSpace(text) {
        if (!enableFullWidthSpaceSeparation) return text
        return text.replace(/\n2\n/g, '\u3000').replace(/\n1\n/g, '\n')
    }
    ah.proxy({
        onRequest: (config, handler) => {
            handler.next(config);
        },
        onResponse: (response, handler) => {
            function defaultAction() {
                handler.resolve(response)
            }
            try {
                if (!response.config.url.includes('/api/timedtext') || response.config.url.includes('&translate_h00ked')) return defaultAction()
                let defaultJson = null
                if (response.response) {
                    const jsonResponse = JSON.parse(response.response)
                    if (jsonResponse.events) defaultJson = jsonResponse
                }
                if (defaultJson === null) return defaultAction()
                let lines = []
                for (const event of defaultJson.events) {
                    for (const seg of event.segs) {
                        if ('utf8' in seg && typeof seg.utf8 === 'string') {
                            lines.push(...seg.utf8.split('\n'))
                        }
                    }
                }
                let linesText = lines.join('\n')
                linesText = encodeFullwidthSpace(linesText)
                let q = encodeURIComponent(linesText)
                fetch(`https://translate.googleapis.com/translate_a/single?client=gtx&sl=auto&tl=${localeLang}&dj=1&dt=t&dt=rm&q=${q}`)
                    .then(res => {
                        return res.json()
                    })
                    .then(result => {
                        let resultText = result.sentences.map((function (s) {
                            return "trans" in s ? s.trans : "";
                        })).join("")
                        resultText = decodeFullwidthSpace(resultText)
                        return resultText.split("\n");
                    })
                    .then(translatedLines => {
                        const addTranslation = (line, idx) => {
                            if (line !== lines[i + idx]) return line
                            let translated = translatedLines[i + idx]
                            if (line === translated) return line
                            return `${line}\n${translated}`
                        }
                        let i = 0
                        for (const event of defaultJson.events) {
                            for (const seg of event.segs) {
                                if ('utf8' in seg && typeof seg.utf8 === 'string') {
                                    let s = seg.utf8.split('\n')
                                    let st = s.map(addTranslation)
                                    seg.utf8 = st.join('\n')
                                    i += s.length
                                }
                            }
                        }
                        response.response = JSON.stringify(defaultJson)
                        handler.resolve(response)
                    }).catch(e => {
                        console.warn(e)
                        defaultAction()
                    })
            } catch (e) {
                console.warn(e)
                defaultAction()
            }
        }
    })
})();