/*
 * @Author: CGT (caogtaa@gmail.com) 
 * @Date: 2020-01-16 22:08:55 
 * @Last Modified by:   CGT (caogtaa@gmail.com) 
 * @Last Modified time: 2020-01-16 22:08:55 
 */
const fs = require('fs');
const path = require('path');

function attachNode(node, parent, worldPos, callback) {
    // world position to relative position
    parent.addChild(node);
    node.position = parent.convertToNodeSpaceAR(worldPos);

    // todo: support undo
    if (callback) {
        callback(null, node);
    }
}

// load prefab by uuid, create instance under canvas or some parent node
function insertNode(param, callback) {
    param = param || {worldX: 0, worldY: 0};
    let worldPos = cc.v2(param.worldX, param.worldY);   // todo: uniform param

    let parent = null;
    if (param.parentId) {
        // @ts-ignore
        parent = cc.engine.getInstanceById(param.parentId);
    } else if (param.parent) {
        // @ts-ignore
        parent = param.parent
    } else {
        // canvas can be renamed, should find cc.Canvas component in scene top level
        // parent = cc.find('Canvas');
        let scene = cc.director.getScene();
        for (let s of scene.children) {
            if (s.getComponent(cc.Canvas)) {
                parent = s;
                break;
            }
        }
    }

    if (!parent) {
        if (callback)
            callback('Canvas or parent node not found, cancel.', null);

        return;
    }

    if (param.uuid) {
        cc.loader.load(
            {uuid: param.uuid, type: 'uuid'},
            null,
            function (error, prefab) {
                if (error) {
                    Editor.log(error);
                    if (callback) {
                        callback(error, null);
                    }
                    return;
                }
                let node = cc.instantiate(prefab);
                attachNode(node, parent, worldPos, callback);
            }
        );
    } else {
        let node = new cc.Node();
        attachNode(node, parent, worldPos, callback);
    }
}


let gameType
let semeID
let gameID
let partID
let modeID
let oldJson
let wordCode
let gameJson
let typeArr = ['gameTest/', 'gameChild/', 'gameHome/', 'gameMath/', 'gamePass/', 'gameEndless/', 'gameChinese/', 'gameMathApp/', 'gamePoetry/', 'gamePinyin/']
let typeSemeArr = ['gameTestSeme/', 'gameChildSeme/', 'gameHomeSeme/', 'gameMathSeme/', 'gamePassSeme/', 'gameEndlessSeme/', 'gameChineseSeme/', 'gameMathAppSeme/', 'gamePoetrySeme/', 'gamePinyinSeme/']

function isEditor(event, param) {
    if (event && event.reply) {
        event.reply(null, 'Fine, thank you!');
    }
    semeID = param.semeID
    gameID = param.gameID
    partID = param.partID
    modeID = param.modeID
    gameType = param.gameType
    wordCode = param.word ? param.word.charCodeAt(0).toString() : ''
    param.wordCode = wordCode
    let scene = cc.director.getScene();
    let canvas
    let sceneName = scene.name
    for (let s of scene.children) {
        if (s.getComponent(cc.Canvas)) {
            canvas = s;
            break;
        }
    }
    if (sceneName != 'Editor' || !canvas) {
        event && event.reply('当前打开的场景不是Editor');
    }
    param.editorLog = (data) => {
        Editor.log(data)
    }
    return {canvas, param}
}

// @ts-ignore
module.exports = {
    'create-node': function (event, param) {
        let selected = Editor.Selection.curSelection('node');
        if (selected.length > 0) {
            param.parentId = selected[0];
        }

        insertNode(param, (error, node) => {
            if (node) {
                // select new node
                Editor.Selection.select('node', node.uuid);
                // Editor.log(`'${node.name}' created`);
            }

            if (event.reply) {
                event.reply(error);
            }
        });
    },
    'importGame': function (event, config) {
        let {canvas, param} = isEditor(event, config)
        if (!canvas) return
        let editor = canvas.getComponent('Editor')
        let stageArr = [semeID, gameID, partID]
        if (modeID == '0') {
            gameJson = FileHelper.getObjectFromFile(path.join(Editor.Project.path, '/assets/' + typeSemeArr[param.gameType]
                , addGameSGP('data_' + stageArr.join('_') + '.json', 3)))
            param.gameJson = gameJson
        }
        editor.clearNodes()
        let gamemode = ['', 'Drag', 'Select', 'Line', 'Maze', 'PageDrag', 'PageSelect', 'DrawImg', 'Show', 'PageShow',
            'PageLine', 'Memory', 'EndlessSelect', 'Race', 'Couple', 'Hamster', 'WordMemory', 'PickUp']
        let prefabUrl = 'db://assets/prefab/gameMode/' + gamemode[modeID == '0' ? gameJson.gameMode : parseInt(modeID)] + 'UI.prefab'
        let uuid = Editor.assetdb.remote.urlToUuid(prefabUrl)
        Editor.Ipc.sendToPanel('scene', 'scene:create-nodes-by-uuids', [uuid], cc.find('game', canvas)['_id'], (err) => {
            // if (err) return
            if (modeID > 0) return
            editor.initGameByJson(param)
            let node = cc.find('game', canvas).children[0]
            let urlKey = 'db://assets/' + typeSemeArr[param.gameType]
                + addGameSGP('', 3)
            let bgUrlKey = 'db://assets/' + typeSemeArr[param.gameType]
                + addGameSGP('', semeID % 100 == 0 || param.gameType == 7 ? 3 : 2)
            this.setSpriteByName(cc.find('bg', node), bgUrlKey, gameJson.bg)
            if (param.gameType == 9) {
                let bgTex = 'editBg'
                if (gameID == 100) {
                    bgTex = 'testBg'
                }
                if (semeID == 300) {
                    bgTex = 'readBg'
                }
                this.setSpriteByName(cc.find('bg', node), 'db://assets/gamePinyin/texture/Public/', bgTex)
            } else {
                this.setSpriteByName(cc.find('bg', node), bgUrlKey, gameJson.bg)
            }
            this.setSpriteByName(cc.find('title', node), urlKey, gameJson.bt)
            if (gameJson.bgNode) {
                for (let i = 0; i < gameJson.bgNode.length; i++) {
                    let bgNode = cc.find('bgNode', node)
                    if (bgNode) this.setSpriteByName(bgNode.children[i], urlKey, gameJson.bgNode[i].tex)
                }
            }

            if ([5, 6, 9, 10].includes(gameJson.gameMode)) {
                let page1 = cc.find('page/view/content/page1', node)
                let page2 = cc.find('page/view/content/page2', node)
                let page1Data = gameJson.node.filter(value => value.page == 1)
                let page2Data = gameJson.node.filter(value => value.page == 2)
                for (let i = 0; i < page1Data.length; i++) {
                    this.setSpriteByName(page1.children[i], urlKey, page1Data[i].tex)
                }
                for (let i = 0; i < page2Data.length; i++) {
                    this.setSpriteByName(page2.children[i], urlKey, page2Data[i].tex)
                }
            } else {
                for (let i = 0; i < gameJson.node.length; i++) {
                    let gameNode = cc.find('gameNode', node)
                    if (gameNode) {
                        let spriteNode = gameNode.children[i]
                        if (gameJson.gameMode == 4) {
                            spriteNode = cc.find('sprite', gameNode.children[i])
                        }
                        this.setSpriteByName(spriteNode, urlKey, gameJson.node[i].tex)
                    }
                }
            }
            if (gameJson.answerNodes) {
                for (let i = 0; i < gameJson.answerNodes.length; i++) {
                    let answerNode = cc.find('answer', node)
                    if (answerNode) {
                        for (let i = 0; i < answerNode.children.length; i++) {
                            this.setSpriteByName(answerNode.children[i], urlKey, gameJson.answerNodes[i].tex)
                        }
                    }
                }
            }

        }, 1000)
    },
    'outGameJson': function (event, config) {
        let {canvas, param} = isEditor(event, config)
        if (!canvas) return
        let editor = canvas.getComponent('Editor')
        param.oldJson = gameJson
        let outJson = editor.outGameJson(param)
        this.writeOutJson(outJson, event, param)
    },
    'inBgAni': function (event, config) {
        let {canvas, param} = isEditor(event, config)
        if (!canvas) return
        let editor = canvas.getComponent('Editor')
        let yearID = semeID.substring(0, 2)
        let urlKey = 'db://assets/' + typeArr[param.gameType]
            + 'bgAni/' + yearID + '/'
        let getAniJonUrl = (ID) => {
            return path.join(Editor.Project.path, '/assets/' + typeArr[param.gameType]
                , 'bgAni', yearID, 'bgAni_' + ID + '_' + gameID + (param.gameType == 5 ? '_' + partID : '') + '.json')
        }
        let aniJson = FileHelper.getObjectFromFile(getAniJonUrl(yearID))
        if (Object.keys(aniJson).length == 0) {
            aniJson = FileHelper.getObjectFromFile(getAniJonUrl(semeID))
        }
        param.aniJson = aniJson
        editor.inBgAni(param)
        let bgNode = cc.find('game', canvas).children[0].getChildByName('bg')
        for (let key in aniJson) {
            let node = bgNode.getChildByName(key)
            let children = aniJson[key].children
            let initAniOrPar = (obj, node) => {
                if (obj.tex) this.setSpriteByName(node, urlKey, obj.tex)
                if (obj.ani) this.setAnimation(node, urlKey, obj.ani)
                if (obj.particle) this.setParticle(node, urlKey, obj.particle)
            }
            if (node) {
                initAniOrPar(aniJson[key], node)
                if (children) {
                    for (let i = 0; i < children.length; i++) {
                        initAniOrPar(children[i], node.children[i])
                    }
                }
            }
        }

    },
    'outBgAni': function (event, config) {
        let {canvas, param} = isEditor(event, config)
        if (!canvas) return
        let editor = canvas.getComponent('Editor')
        let outJson = editor.outBgAni(param)
        this.writeOutBgAniJson(outJson, event, param)

    },
    'saveGameJson': function (event, config) {
        let {canvas, param} = isEditor(event, config)
        if (!canvas) return
        let src = Editor.Project.path.replace('\\', '\/') + '/assets/' + typeSemeArr[param.gameType] + addGameSGP('', 3)
        let dst = Editor.Project.path.replace('\\', '\/') + '/gameRes/' + typeSemeArr[param.gameType] + addGameSGP('', 3)
        FileHelper.copyDir(src, dst)
        event.reply(null, '关卡保存成功');
        Editor.log('关卡保存成功')
    },
    'writeOutJson': function (outJson, event, param) {
        let stageArr = [semeID, gameID, partID]
        let savePath = 'db://assets/' + typeSemeArr[param.gameType]
            + addGameSGP('data_' + stageArr.join('_') + '.json', 3)
        if (outJson.gameMode == 7) {
            outJson.drawPos = FileHelper.getObjectFromFile(Editor
                .url('packages://cc-ext-scene-menu/' + typeArr[param.gameType] + 'DrawImg/' + stageArr.join('_') + '.json')
            )
            let errDrawPath = Editor
                .url('packages://cc-ext-scene-menu/' + typeArr[param.gameType] + 'DrawImg/' + stageArr.join('_') + '_e.json')
            if (fs.existsSync(errDrawPath)) {
                outJson.errDrawPos = FileHelper.getObjectFromFile(errDrawPath)
            }
        }
        fs.writeFileSync(path.join(Editor.Project.path, '/assets/' + typeSemeArr[param.gameType]
            , addGameSGP('data_' + stageArr.join('_') + '.json', 3)), JSON.stringify(outJson, null, 2))
        if (!param.nofresh) {
            Editor.assetdb.refresh(savePath, (err, results) => {
                if (err) {
                    event.reply('关卡导出失败');
                }
                event.reply(null, '关卡导出成功');
            })
        }
    },
    'writeOutBgAniJson': function (outJson, event, param) {
        let yearID = semeID.substring(0, 2)
        let stageArr = [yearID, gameID]
        if (param.gameType == 5) {
            stageArr.push(partID)
        }
        if (param.gameType == 3 || param.gameType == 6) {
            stageArr[0] = semeID
        }
        let savePath = 'db://assets/' + typeArr[param.gameType] + 'bgAni/'
            + yearID + '/bgAni_' + stageArr.join('_') + '.json'
        fs.writeFileSync(path.join(Editor.Project.path, '/assets/' + typeArr[param.gameType] + 'bgAni/'
            , yearID, '/bgAni_' + stageArr.join('_') + '.json'), JSON.stringify(outJson, null, 2))
        Editor.assetdb.refresh(savePath, (err, results) => {
            if (err) {
                event.reply('导出背景动画失败');
            }
            event.reply(null, '导出导出背景动画成功');
        })

    },
    'guideImport': function (event, config) {
        let {canvas, param} = isEditor(event, config)
        if (!canvas) return
        let editor = canvas.getComponent('Editor')
        editor.clearNodes()
        let stageArr = [semeID, gameID]
        let urlLevel = 2
        let guideUrl = path.join(Editor.Project.path, '/assets/' + typeSemeArr[param.gameType]
            , addGameSGP('guide/guide_' + stageArr.join('_') + '.json', urlLevel))
        if (param.gameType == 6) {
            guideUrl = path.join(Editor.Project.path, '/assets/' + typeSemeArr[param.gameType]
                , wordCode, 'guide/guide_' + wordCode + '.json')
        }
        gameJson = FileHelper.getObjectFromFile(guideUrl)
        param.gameJson = gameJson
        let prefabUrl = 'db://assets/prefab/public/GuideUI.prefab'
        if (param.gameType == 6) {
            prefabUrl = 'db://assets/prefab/chinese/ChineseMainUI.prefab'
        }
        let uuid = Editor.assetdb.remote.urlToUuid(prefabUrl)
        Editor.Ipc.sendToPanel('scene', 'scene:create-nodes-by-uuids', [uuid], cc.find('game', canvas)['_id'], (err) => {
            // if (Object.keys(gameJson).length > 0) {
            editor.importGuide(param)
            let node = cc.find('game', canvas).children[0]
            if (param.gameType == 7) {
                let bgUrlKey = 'db://assets/' + typeSemeArr[param.gameType]
                    + addGameSGP('', 2) + 'guide/'
                this.setSpriteByName(cc.find('bg', node), bgUrlKey, 'bg')
            }
            // }
        }, 1000)
    },
    'guideOut': function (event, config) {
        let {canvas, param} = isEditor(event, config)
        if (!canvas) return
        let editor = canvas.getComponent('Editor')
        let outJson = editor.outGuideJson(param)
        let stageArr = [semeID, gameID]
        let urlLevel = 2
        let jsonUrl = path.join(Editor.Project.path, '/assets/' + typeSemeArr[param.gameType]
            , addGameSGP('guide/guide_' + stageArr.join('_') + '.json', urlLevel))
        let savePath = 'db://assets/' + typeSemeArr[param.gameType]
            + addGameSGP('guide/guide_' + stageArr.join('_') + '.json', urlLevel)

        if (param.gameType == 6) {
            jsonUrl = path.join(Editor.Project.path, '/assets/' + typeSemeArr[param.gameType]
                , wordCode, '/guide/guide_' + wordCode + '.json')
            savePath = 'db://assets/' + typeSemeArr[param.gameType]
                + wordCode + '/'
        }
        FileHelper.mkDirsSync(path.dirname(jsonUrl))
        fs.writeFileSync(jsonUrl, JSON.stringify(outJson, null, 2))
        Editor.assetdb.refresh(savePath, (err, results) => {
            if (err) {
                event.reply('引导文件导出失败');
            }
            event.reply(null, '引导文件导出成功');
        })
    },
    'savaGuide': function (event, config) {
        let {canvas, param} = isEditor(event, config)
        if (!canvas) return
        let urlLevel = 2
        if (param.gameType == 6) {
            urlLevel = 3
        }

        let assetsStartUrl = Editor.Project.path.replace('\\', '\/') + '/assets/' + typeSemeArr[param.gameType]
        let gameResStartUrl = Editor.Project.path.replace('\\', '\/') + '/gameRes/' + typeSemeArr[param.gameType]
        let getSrc = (key, level = 0) => {
            if (!level) level = urlLevel
            let src = assetsStartUrl + addGameSGP(key, level)
            return src
        }
        let getDst = (key, level = 0) => {
            if (!level) level = urlLevel
            let dst = gameResStartUrl + addGameSGP(key, level)
            return dst
        }

        if (param.gameType == 6) {
            FileHelper.copyDir(assetsStartUrl + wordCode + '/', gameResStartUrl + wordCode + '/')
            FileHelper.copyFile(assetsStartUrl + wordCode + '.meta', gameResStartUrl + wordCode + '.meta')
        } else {
            FileHelper.copyDir(getSrc('guide/'), getDst('guide/'))
            FileHelper.copyFile(getSrc('guide.meta'), getDst('guide.meta'))
        }
        event.reply(null, '引导文件保存成功');
        Editor.log('引导文件保存成功')
    },
    'playGuide': function (event, config) {
        let {canvas, param} = isEditor(event, config)
        if (!canvas) return
        let editor = canvas.getComponent('Editor')
        editor.playGuide()
    },
    'playNodeGuide': function (event, config) {
        let {canvas, param} = isEditor(event, config)
        if (!canvas) return
        let editor = canvas.getComponent('Editor')
        editor.playNodeGuide()
    },
    'pauseGuide': function (event, config) {
        let {canvas, param} = isEditor(event, config)
        if (!canvas) return
        let editor = canvas.getComponent('Editor')
        editor.pauseGuide()
    },
    'resetGuide': function (event, config) {
        let {canvas, param} = isEditor(event, config)
        if (!canvas) return
        let editor = canvas.getComponent('Editor')
        editor.resetGuide()
    },
    'guidePageChange': function (event, config) {
        let {canvas, param} = isEditor(event, config)
        if (!canvas) return
        let editor = canvas.getComponent('Editor')
        editor.guideChangePage(param.guidePage)
    },
    'teacherImport': function (event, config) {
        let {canvas, param} = isEditor(event, config)
        if (!canvas) return
        let editor = canvas.getComponent('Editor')
        editor.clearNodes()
        let stageArr = [semeID, gameID]
        let urlLevel = 2
        let teacherUrl = path.join(Editor.Project.path, '/assets/' + typeSemeArr[param.gameType]
            , addGameSGP('teacher/teacher_' + stageArr.join('_') + '.json', urlLevel))
        gameJson = FileHelper.getObjectFromFile(teacherUrl)
        param.gameJson = gameJson
        let prefabUrl = 'db://assets/prefab/public/TeacherGuideUI.prefab'
        let uuid = Editor.assetdb.remote.urlToUuid(prefabUrl)
        Editor.Ipc.sendToPanel('scene', 'scene:create-nodes-by-uuids', [uuid], cc.find('game', canvas)['_id'], (err) => {
            // if (Object.keys(gameJson).length > 0) {
            editor.importTeacher(param)
            let node = cc.find('game', canvas).children[0]
            let urlKey = 'db://assets/' + typeSemeArr[param.gameType]
                + addGameSGP('', urlLevel) + '/teacher/'
            if (gameJson.bgNode) {
                for (let i = 0; i < gameJson.bgNode.length; i++) {
                    let bgNode = cc.find('bgNode', node)
                    if (bgNode) this.setSpriteByName(bgNode.children[i], urlKey, gameJson.bgNode[i].tex)
                }
            }
            for (let i = 0; i < gameJson.node.length; i++) {
                let gameNode = cc.find('gameNode', node)
                if (gameNode) {
                    let spriteNode = gameNode.children[i]
                    this.setSpriteByName(spriteNode, urlKey, gameJson.node[i].tex)
                }
            }
            // }
        }, 1000)
    },
    'teacherOut': function (event, config) {
        let {canvas, param} = isEditor(event, config)
        if (!canvas) return
        let editor = canvas.getComponent('Editor')
        let outJson = editor.outTeacherJson(param)
        let stageArr = [semeID, gameID]
        let urlLevel = 2
        let jsonUrl = path.join(Editor.Project.path, '/assets/' + typeSemeArr[param.gameType]
            , addGameSGP('teacher/teacher_' + stageArr.join('_') + '.json', urlLevel))
        let savePath = 'db://assets/' + typeSemeArr[param.gameType]
            + addGameSGP('teacher/teacher_' + stageArr.join('_') + '.json', urlLevel)
        FileHelper.mkDirsSync(path.dirname(jsonUrl))
        fs.writeFileSync(jsonUrl, JSON.stringify(outJson, null, 2))
        Editor.assetdb.refresh(savePath, (err, results) => {
            if (err) {
                event.reply('讲解文件导出失败');
            }
            event.reply(null, '讲解文件导出成功');
        })
    },
    'savaTeacher': function (event, config) {
        let {canvas, param} = isEditor(event, config)
        if (!canvas) return
        let urlLevel = 2
        let assetsStartUrl = Editor.Project.path.replace('\\', '\/') + '/assets/' + typeSemeArr[param.gameType]
        let gameResStartUrl = Editor.Project.path.replace('\\', '\/') + '/gameRes/' + typeSemeArr[param.gameType]
        let getSrc = (key, level = 0) => {
            if (!level) level = urlLevel
            let src = assetsStartUrl + addGameSGP(key, level)
            return src
        }
        let getDst = (key, level = 0) => {
            if (!level) level = urlLevel
            let dst = gameResStartUrl + addGameSGP(key, level)
            return dst
        }
        FileHelper.copyDir(getSrc('teacher/'), getDst('teacher/'))
        FileHelper.copyFile(getSrc('teacher.meta'), getDst('teacher.meta'))
        event.reply(null, '讲解文件保存成功');
        Editor.log('讲解文件保存成功')
    },
    'setSpriteByName': function (node, urlKey, tex) {
        if (node && tex) {
            let uuid = Editor.assetdb.remote.urlToUuid(urlKey + tex + '.png/' + tex)
            if (uuid) {
                let data = {
                    id: node.getComponent(cc.Sprite).uuid,
                    path: "spriteFrame",//要修改的属性
                    type: "cc.SpriteFrame",
                    value: {uuid: uuid},
                    isSubProp: false,
                }
                Editor.Ipc.sendToPanel('scene', 'scene:set-property', data);
                return true
            }
        }
        return true
    },
    'setAnimation': function (node, urlKey, ani) {
        if (node && ani) {
            let uuid = Editor.assetdb.remote.urlToUuid(urlKey + ani + '.anim')
            if (uuid) {
                let data = {
                    id: node.getComponent(cc.Animation).uuid,
                    path: "defaultClip",//要修改的属性
                    type: "cc.AnimationClip",
                    value: {uuid: uuid},
                    isSubProp: false,
                }
                Editor.Ipc.sendToPanel('scene', 'scene:set-property', data);
                return true
            }
        }
        return true
    },
    'setParticle': function (node, urlKey, particle) {
        if (node && particle) {
            let uuid = Editor.assetdb.remote.urlToUuid(urlKey + particle + '.plist')
            if (uuid) {
                let data = {
                    id: node.getComponent(cc.ParticleSystem).uuid,
                    path: "file",//要修改的属性
                    type: "cc.ParticleAsset",
                    value: {uuid: uuid},
                    isSubProp: false,
                }
                Editor.Ipc.sendToPanel('scene', 'scene:set-property', data);
                return true
            }
        }
        return true
    }
}

function addPreZero(num, length) {
    let numstr = num.toString()
    const l = numstr.length
    if (numstr.length >= length) {
        return numstr
    }
    for (let i = 0; i < length - l; i++) {
        numstr = `0${numstr}`
    }
    return numstr
}


function addGameSGP(data, level = 3) {
    let url = ''
    if (level >= 1) {
        url = url + 'S' + semeID + '/' // 是否包含S（课程）
    }
    if (level >= 2) {
        if (gameID) {
            url = url + 'G' + Math.addPreZero(gameID, 2) + '/' // 是否包含G（游戏）
        }
    }
    if (level >= 3) {
        if (partID) {
            url = url + 'P' + Math.addPreZero(partID, 2) + '/' // 是否包含P（关卡）
        }
    }
    return url + data
}

let FileHelper = {
    // 输出到文件
    writeFile(fullPath, content) {
        if (!fullPath || !content) {
            Editor.error('writeFile: invalid params');
            return;
        }

        fs.writeFile(fullPath, content, (err) => {
            if (err) {
                Editor.error(err);
                return;
            }
            Editor.log('Success to write file: ' + fullPath);
        });
    },

    // 返回文件内容的json对象
    getObjectFromFile(fullPath) {
        let retObj = {};
        if (!fs.existsSync(fullPath)) {
            Editor.warn('getObjectFromFile: NoExist path=' + fullPath);
            return retObj;
        }
        let str = this.getFileString(fullPath);
        if (!str) {
            Editor.warn('getObjectFromFile: invalid file=' + fullPath);
            return retObj;
        }
        retObj = JSON.parse(str);
        if (!retObj) {
            Editor.warn('getObjectFromFile: invalid object=' + fullPath);
            return retObj;
        }
        return retObj;
    },

    // 返回文件内容的字符串形式
    getFileString(fullPath) {
        if (fs.existsSync(fullPath)) {
            return fs.readFileSync(fullPath).toString();
        } else {
            return undefined
        }
    },
    copyFile(src, dst) {
        fs.writeFileSync(dst, fs.readFileSync(src))
    },
    mkDirsSync(dirname) {
        if (fs.existsSync(dirname)) {
            return true;
        } else if (this.mkDirsSync(path.dirname(dirname))) {
            fs.mkdirSync(dirname);
            return true;
        }
        return false;
    },

    delDir(dirPath) {
        let files = [];
        if (fs.existsSync(dirPath)) {
            files = fs.readdirSync(dirPath);
            files.forEach((file) => {
                const curPath = path.join(dirPath, file);
                if (fs.statSync(curPath).isDirectory()) {
                    this.delDir(curPath); // 递归删除文件夹
                } else {
                    fs.unlinkSync(curPath); // 删除文件
                }
            });
            fs.rmdirSync(dirPath);
        }
    },
    copyDir(srcPath, dstPath) {
        this.delDir(dstPath)
        this.mkDirsSync(dstPath)
        let files = fs.readdirSync(srcPath)
        if (files) {
            files.forEach((file) => {
                if (fs.statSync(srcPath + file).isDirectory()) {
                    this.copyDir(srcPath + file + '/', dstPath + file + '/')
                } else {
                    this.copyFile(srcPath + file, dstPath + file)
                }

            })
        }
    }
};