const fs = require('fs');
let iKey = "zh"
var languageSrcPath = __dirname + "/language/src/" + iKey + "/"
var languageDistPath = __dirname + "/language/dist/" + iKey + "/"
var keyMapPrefex = '_keyMap.json'
var languageMap = {}
var pathInfor = []

var beautifyJson = (str) => {
    // try {
    //     // 设置缩进为2个空格
    //     str = JSON.stringify(JSON.parse(str), null, 2);
    //     str = str
    //         .replace(/&/g, '&')
    //         .replace(/</g, '&lt;')
    //         .replace(/>/g, '&gt;');
    //     return str.replace(/("(\\u[a-zA-Z0-9]{4}|\\[^u]|[^\\"])*"(\s*:)?|\b(true|false|null)\b|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?)/g, function (match) {
    //         var cls = 'number';
    //         if (/^"/.test(match)) {
    //             if (/:$/.test(match)) {
    //                 cls = 'key';
    //             } else {
    //                 cls = 'string';
    //             }
    //         } else if (/true|false/.test(match)) {
    //             cls = 'boolean';
    //         } else if (/null/.test(match)) {
    //             cls = 'null';
    //         }
    //         return match;
    //     });
    // } catch (e) {
    //     alert("异常信息:" + e);
    // }
    return str
}

var initLaguage = () => {
    languageMap['en'] = 'en.json'
    languageMap['ja'] = 'ja.json'
    languageMap['kr'] = 'kr.json'
    languageMap['tw'] = 'tw.json'
    languageMap['zh'] = 'zh.json'
    languageMap['zh_test'] = 'zh_test.json'

    pathInfor = [
        {name: languageSrcPath  + languageMap[iKey], content : ''}, //最新即将被翻译过要替换的src(被翻译过的)
        {name: languageDistPath + languageMap[iKey], content : ''}, //被翻译的语言zh（完整的）
        {name: languageDistPath + iKey + keyMapPrefex, content : ''} //要被翻译的key map(被翻译过的, 与0对应)
    ]
}

var replaceValue = ()=>{
    var scrJson   = JSON.parse(pathInfor[0].content) //被翻译的json
    var distJson  = JSON.parse(pathInfor[1].content) //需要更新替换json
    var keyValueJson  = JSON.parse(pathInfor[2].content) //key-map

    //多key-多value, 源文件
    let srcMap = {}
    for (const key in scrJson) {
        if (Object.prototype.hasOwnProperty.call(scrJson, key)) {
            srcMap[key] = scrJson[key]
        }
    }

    //唯一key-value
    let distMap = {}
    for (const key in distJson) {
        if (Object.prototype.hasOwnProperty.call(distJson, key)) {
            distMap[key] = distJson[key]
        }
    }

    //key集合
    let keyValueMap = {}
    for (const key in keyValueJson) {
        if (Object.prototype.hasOwnProperty.call(keyValueJson, key)) {
            keyValueMap[key] = keyValueJson[key]
        }
    }

    for (const key in srcMap) {
        let getMultKey = (keyV)=>{
            for (const key in keyValueMap) {
                if (Object.prototype.hasOwnProperty.call(keyValueMap, key)) {
                    let keysArrays = keyValueMap[key]
                    if(keysArrays.indexOf(keyV) >= 0) {
                        return keyValueMap[key]
                    }
                }
            }
            return []
        }

        let newValue = srcMap[key]
        let keysArray = getMultKey(key)
        for (let index = 0; index < keysArray.length; index++) {
            distMap[keysArray[index]] = newValue
        }
    }

    //产生要替换的Json文件
    var jsMapstr = JSON.stringify(distMap)
    fs.writeFile(languageDistPath + languageMap[iKey], beautifyJson(jsMapstr), function (err) {
        // 写入成功后err的值就是null，且在该文件夹下生成一个02文件 
        if (err) {
            return console.log('文件写入失败！' + err.message);
        }
        console.log('文件写入成功！');
    })
}

var readLanguae = (name, cb) => {
    fs.readFile(name, 'utf8', function (err, dataStr) {
        if (err) {
            console.log(err); // 打印失败的结果
            return
        }
        console.log(dataStr); // 打印成功的结果
        cb && cb(dataStr)
    })
}

var count = 0
var readJson = (iKey, cb) => {
    readLanguae(pathInfor[count].name, (jsondatastr) => {
        pathInfor[count].content = jsondatastr
        count = count + 1
        if (count >= 3) {
            cb && cb()
        } else {
            readJson(iKey, cb)
        }
    })
}

var main = () => {
    initLaguage()
    readJson(iKey, ()=>{
        replaceValue()
    })
    
}

main();