'use strict'
/**
 * Copyright (c) 2017~2022, OBCon Inc.
 * All rights reserved.
 */

/**
 * @file
 * @copyright 2017~2022, OBCon Inc.
 * @author gye hyun james kim [pnuskgh@gmail.com]
 */

// var multer = require('multer');
// var cors = require('cors');                                 //--- CORS(Cross-Origin Resource Sharing)

const fs = require('fs');
const path = require('path');
const moment = require('moment');

const View = utils.getClass('include', 'view.js');
const markdown = utils.getModule('include', 'Markdown.js');

//--- Facebook 등으로 공유할 때 사용 한다.
const share = utils.getModule('openapis', 'share.js');

//--- MediaWiki 등으로 배포할 때 사용 한다.
const deploy = utils.getModule('openapis', 'deploy.js');

class MarkdownsView extends View {
    constructor() {
        super();

        this._name = 'markdowns';
        this._title = '마크다운';
        this._model = modules.markdowns.model;

        this._msgs = [];                                    //--- msg 저장을 위한 임시 영역
        this._dataSitemap = {};                             //--- Outfile 내용 저장을 위한 임시 영역
    }

    //--- 권한 설정 반환
    getRights() {
        return {
            get: {
                list   : { isLogin: true, isAdmin: true, isGlobalAdmin: true },
                detail : { isLogin: true, isAdmin: true, isGlobalAdmin: true },
                create : { isLogin: true, isAdmin: true, isGlobalAdmin: true },
                update : { isLogin: true, isAdmin: true, isGlobalAdmin: true },
                convert : { isLogin: false, isAdmin: false, isGlobalAdmin: false },
                createSitemap : { isLogin: true, isAdmin: true, isGlobalAdmin: true }
            },
            post: {
                create : { isLogin: true, isAdmin: true, isGlobalAdmin: true },
                update : { isLogin: true, isAdmin: true, isGlobalAdmin: true },
                delete : { isLogin: true, isAdmin: true, isGlobalAdmin: true }
            },
            ajaxGet: {
                list   : { isLogin: true, isAdmin: true, isGlobalAdmin: true },
                detail : { isLogin: true, isAdmin: true, isGlobalAdmin: true }
            },
            ajaxPost: {
                create : { isLogin: true, isAdmin: true, isGlobalAdmin: true },
                update : { isLogin: true, isAdmin: true, isGlobalAdmin: true },
                delete : { isLogin: true, isAdmin: true, isGlobalAdmin: true },
                deploy : { isLogin: true, isAdmin: true, isGlobalAdmin: true }  
            },
            //--- To-Do : SocketIO의 권한을 설정 한다. socketio
            default: false
        };
    }

    //--- Router 설정 반환
    getRouters() {
        let routers = super.getRouters();

        routers.get.convert         = this.convert.bind(this);
        routers.get.createSitemap   = this.createSitemap.bind(this);            //--- sitemap.md 파일을 생성 한다.

        routers.ajaxPost.deploy      = this.ajaxDeploy.bind(this);
        return routers;
    }

    //--- Markdown 파일을 읽어서 화면에 표시 한다.
    //---     pages 모듈의 view() 참조
    convert(req, res, next) {
        (req.query.record) ? this._convert_record(req, res, next):this._convert_file(req, res, next); 
    }

    _convert_file(req, res, next) {
        const theme = this.getTheme('convert', req, 'convert', 'convert.ejs');
        theme.javascriptFiles.push(this.name + '/js/markdown.js');
        theme.cssFiles.push(this.name + '/css/markdown.css');

        const options = {
            req: req,
            res: res,

            file: req.query.source || '/README.md',         //--- Markdown 파일
            language: req.query.language || 'ko_KR',        //--- 사용 언어
            service: req.query.service || ''                //--- 강제로 지정한 서비스 이름
        }
        markdown.initialize(options);

        const filename = path.dirname(markdown.options.file) + '/' + path.basename(markdown.options.file, '.md');
        theme.javascriptFiles.push(`${this.name}/js/${config.service.name}/${filename}.js`);
        theme.cssFiles.push(`${this.name}/css/${config.service.name}/${filename}.css`);

        //--- Markdown 파일 조회시 로그인이 필요한 경우, 로그인 화면을 표시 한다.
        if ((markdown.config.isPublic == false) &&
            ((!req.session.isLogined) || (req.session.isLogined == false))) {
            res.redirect(config.http.path + '/users?action=login');
            return;
        }
        theme.layout = markdown.config.layout || theme.layout;

        share.url = utils.getFullUrl(req.url);
        share.title = config.openAPI.share.title;
        const info = markdown.convert({ source: 'file', target: 'info' });
        info.filestat = fs.statSync(info.filename);
        info.filestat.mtimeStr = moment(info.filestat.mtime).format('YYYY-MM-DD HH:mm:ss');
        const data = {
            folder: markdown.folder || '',
            menu: markdown.convert({ source: 'menu', target: 'menu' }),
            index: JSON.parse('[' + (' ' + markdown.convert({ source: 'file', target: 'index' })).slice(0, -1) + ']'),
            content: markdown.convert({ source: 'file', target: 'html' }),
            info: info,
            config: markdown.config,
            item: null,
            share: share.getHtml(),
            deploy: deploy.getHtml(),
            record: -1,
            source: options.file,
            language: options.language
        };
        res.render(utils.getTemplateFullPath(theme.serviceInfo.site.id, theme.layout), { theme: theme, baseUrl: req.baseUrl, session: req.session, data: data });
    }

    //--- 사용하는 곳이 없음
    _convert_record(req, res, next) {
        let theme = this.getTheme('convert', req, 'convert', 'convert.ejs');

        theme.javascriptFiles.push(this.name + '/js/markdown.js');
        theme.cssFiles.push(this.name + '/css/markdown.css');

        let record = req.query.record;
        let query = { where: { id: record, deleted: false } };
        this.model.table.findOne(query)
        .then(function(item) {
            if (!item) {
                next();
                return;
            }

            if (item.isPublic == false) {
                //--- Site ID가 일치하여야 한다.
                if (item.site != req.session.site.id) {
                    next();
                    return;
                }

                //--- 로그인이 되어 있어야 한다.
                if ((!req.session.isLogined) || (req.session.isLogined == false)) {
                    res.redirect(config.http.path + '/users?action=login'); 
                    return;
                }
            } 

            //--- To-Do : service 항목 추가에 따른 수정을 할 것. _convert_file() 함수 참조
            const options = {
                req: req,
                res: res,

                source: path.join(item.folder, `record=${record}.md`),              //--- ???, markdown 파일 이름 (예, /HAProxy/README.md)
                language: item.language,                                            //--- markdown 파일 언어
                service: ''                                                         //--- Service 이름
            }
            markdown.initialize(options);

            share.url = utils.getFullUrl(req.url);
            share.title = config.openAPI.share.title;
            const data = {
                folder: item.folder,
                menu: markdown.convert({ source: 'menu', target: 'menu' }),
                index: markdown.convert({ source: 'content', content: item.content, target: 'index' }),
                content: markdown.convert({ source: 'content', content: item.content, target: 'html' }),
                config: {
                    layout: config.theme.layout,                                       //--- layout
                    isPublic: item.isPublic                                     //--- false. 로그인 필요
                },
                item: item,
                share: share.getHtml(),
                deploy: deploy.getHtml(),
                record: record,
                source: options.source,
                language: options.language
            };

            theme.javascriptFiles.push(`${this.name}/js/${config.service.name}/record_${record}.js`);
            theme.cssFiles.push(`${this.name}/css/${config.service.name}/record_${record}.css`);
                
            res.render(utils.getTemplateFullPath(theme.serviceInfo.site.id, config.theme.layout), { theme: theme, baseUrl: req.baseUrl, session: req.session, data: data });
        }).catch(utils.obj.loggerError);
    }

    //--- 사용하는 곳이 없음
    createSitemap(req, res, next) {
        let theme = this.getTheme('createSitemap', req, 'createSitemap', 'createSitemap.ejs');

        //--- manual/${service}/default/ko_KR/sitemap.md
        //--- manual/${service}/${site}/ko_KR/sitemap.md
        //--- manual/${service}/${site}/${lang}/sitemap.md
        let folderManual = path.join(config.folder_root, 'manual');
        let service = '';
        let site = '';
        let lang = '';

        this._msgs = [];
        this._dataSitemap = {};
        let dataService = fs.readdirSync(folderManual);
        for (let idxService = 0; idxService < dataService.length; idxService++) {
            service = dataService[idxService];
            let folderService = path.join(folderManual, service);
            if (fs.statSync(folderService).isDirectory() == false) {
                continue;
            }

            let dataSite = fs.readdirSync(folderService);
            for (let idxSite = 0; idxSite < dataSite.length; idxSite++) {
                site = dataSite[idxSite];
                let folderSite = path.join(folderService, site);
                if (fs.statSync(folderSite).isDirectory() == false) {
                    continue;
                }
    
                let dataLang = fs.readdirSync(folderSite);
                for (let idxLang = 0; idxLang < dataLang.length; idxLang++) {
                    lang = dataLang[idxLang];
                    let folderLang = path.join(folderSite, lang);
                    if (fs.statSync(folderLang).isDirectory() == false) {
                        continue;
                    }
        
                    this._createSitemap(req, res, next, folderManual, service, site, lang);
                }                        
            }    
        }

        let data = { 
            code: '0',
            msg: this._msgs.join('<br/>')
        };
        res.render(utils.getTemplateFullPath(theme.serviceInfo.site.id, config.theme.layout), { theme: theme, baseUrl: req.baseUrl, session: req.session, data: data });
    }
    
    //--- 언어별로 사이트맵을 작성 한다.
    //--- To-Do: 1 단계 - default/ko_KR/에 대한 사이트맵을 작성 한다.
    //--- To-Do: 2 단계 - 언어별 사이트맵을 작성 한다.
    //--- To-Do: 3 단계 - 사이트별 사이트맵을 작성 한다.
    _createSitemap(req, res, next, folderManual, service, site, lang) {
        this._msgs.push('&nbsp;&nbsp;service: ' + service + ', site: ' + site + ', lang: ' + lang + ' sitemap 작성 시작');
        if (utils.existField(this._dataSitemap, service) == false) {
            this._dataSitemap[service] = {};
        }
        if (utils.existField(this._dataSitemap[service], site) == false) {
            this._dataSitemap[service][site] = {};
        }
        if (utils.existField(this._dataSitemap[service][site], lang) == false) {
            this._dataSitemap[service][site][lang] = [];
        }

        //--- 폴더와 파일 정보를 읽어서 this._dataSitemap[service][site][lang]에 저장 한다.
        logger.info(`Create sitemap : service - ${service}, site - ${site}, lang - ${lang}`);
        this._searchFolder(folderManual, service, site, lang, path.join(folderManual, service, site, lang));
        // logger.info('Create sitemap : dataSitemap - ' + JSON.stringify(this._dataSitemap[service][site][lang]));

        let saveFolder = '';
        let contents = [] ;
        contents.push('## Sitemap');
        contents.push('');
        for (let idx = 0; idx < this._dataSitemap[service][site][lang].length; idx++) {
            let item = this._dataSitemap[service][site][lang][idx];
            logger.info('Sitemap : ' + JSON.stringify(item));
            if (item.folder == '/') {
                if (item.conf.isPublic) {        
                    contents.push(item.ident + '- [' + item.file_name + '](' + item.folder + item.file_name + '.md)');
                    logger.info('    '  + item.ident + '- [' + item.file_name + '](' + item.folder + item.file_name + '.md)');
                } else {
                    contents.push(item.ident + '- [<span style="color: green;">' + item.file_name + '</span>](' + item.folder + item.file_name + '.md)');
                    logger.info('    '  + item.ident + '- [<span style="color: green;">' + item.file_name + '</span>](' + item.folder + item.file_name + '.md)');
                }
            } else {
                if (saveFolder != item.folder) {
                    saveFolder = item.folder;
                    if (item.file_name == 'README') {
                        if (item.conf.isPublic) {        
                            contents.push(item.ident.substring(2) + '- [' + item.folder.substring(1, item.folder.length - 1) + '](' + item.folder + item.file_name + '.md)');
                            logger.info('    '  + item.ident.substring(2) + '- [' + item.folder.substring(1, item.folder.length - 1) + '](' + item.folder + item.file_name + '.md)');
                        } else {
                            contents.push(item.ident.substring(2) + '- [<span style="color: green;">' + item.folder.substring(1, item.folder.length - 1) + '</span>](' + item.folder + item.file_name + '.md)');
                            logger.info('    '  + item.ident.substring(2) + '- [<span style="color: green;">' + item.folder.substring(1, item.folder.length - 1) + '</span>](' + item.folder + item.file_name + '.md)');
                        }
                        continue;
                    } else {
                        contents.push(item.ident.substring(2) + '- ' + item.folder.substring(1, item.folder.length - 1));
                        logger.info('    '  + item.ident.substring(2) + '- ' + item.folder.substring(1, item.folder.length - 1));
                    }
                }

                if (item.conf.isPublic) {        
                    contents.push(item.ident + '- [' + item.file_name + '](' + item.folder + item.file_name + '.md)');
                    logger.info('    '  + item.ident + '- [' + item.file_name + '](' + item.folder + item.file_name + '.md)');
                } else {
                    contents.push(item.ident + '- [<span style="color: green;">' + item.file_name + '</span>](' + item.folder + item.file_name + '.md)');
                    logger.info('    '  + item.ident + '- [<span style="color: green;">' + item.file_name + '</span>](' + item.folder + item.file_name + '.md)');
                }
            }
        }

        // let fout_filename = path.join(folderManual, service, site, lang, '_sitemap.md');
        let fout_filename = path.join(folderManual, service, site, lang, 'sitemap.md');
        if (fs.existsSync(fout_filename)) {
            fs.unlinkSync(fout_filename);
        }
        if (utils.isLinux()) {
            fs.writeFileSync(fout_filename, contents.join('\n'), 'utf8');
        } else {
            fs.writeFileSync(fout_filename, contents.join('\r\n'), 'utf8');
        }
    }

    _searchFolder(folderManual, service, site, lang, folder=null, folderName='/', ident='') {
        // this._msgs.push(ident + 'Folder : ' + folderName);
        
        let data = fs.readdirSync(folder);
        //--- 파일 처리
        let file = path.join(folder, 'README.md');
        if ((fs.existsSync(file)) && (fs.statSync(file).isFile())) {
            let conf = this._getMarkdownConfig(file);
            this._dataSitemap[service][site][lang].push({
                ident: ident,
                folder: folderName,
                file_name: 'README',
                conf: conf
            });
        }

        for (let idx = 0; idx < data.length; idx++) {
            let file = path.join(folder, data[idx]);
    
            if ((fs.statSync(file).isFile()) && (file.endsWith('.md'))) {
                let filename = data[idx];
                let file_ext  = path.extname(filename);     //--- .md
                let file_name = path.basename(file, file_ext);

                if ((file_name.startsWith('zz')) || (file_name.startsWith('_'))) {
                    continue;
                }

                if ((file_name == 'README') || (file_name.startsWith('MENU_')) || (file_name == 'sitemap')) {
                    continue;
                }

                try {
                    let conf = this._getMarkdownConfig(file);
                    // this._msgs.push(ident + 'Service : ' + service + ', Folder : ' + folderName + ', file : ' + file_name + ', conf : ' + conf.isPublic);
                    this._dataSitemap[service][site][lang].push({
                        ident: ident,
                        folder: folderName,
                        file_name: file_name,
                        conf: conf
                    });
                } catch (e) {
                    console.error(file + ' :: error.');
                    console.error(e.stack);
                }
            }
        }

        //--- 폴더 처리
        for (let idx = 0; idx < data.length; idx++) {
            let file = path.join(folder, data[idx]);

            if (data[idx].startsWith('zz')) {
                continue;
            }
    
            if (fs.statSync(file).isDirectory()) {
                this._searchFolder(folderManual, service, site, lang, file, folderName + data[idx] + '/', ident + '  ');
            }
        }
    }

    _getMarkdownConfig(file) {
        let rtConfig = markdown._defaultConfig;
        let tmpFile = path.join(path.dirname(file), 'config.js');
        if (fs.existsSync(tmpFile)) {
            delete require.cache[tmpFile];
            let conf = require(tmpFile);
            Object.assign(rtConfig, conf);
        }

        tmpFile = path.join(path.dirname(file), path.basename(file, '.md') + '.js');
        if (fs.existsSync(tmpFile)) {
            delete require.cache[tmpFile];
            let conf = require(tmpFile);
            Object.assign(rtConfig, conf);
        }
        return rtConfig;
    }

    ajaxDeploy(req, res, next) {
        let id = req.body.id;

        if ((typeof(id) == 'undefined') || (id == '')) {
            utils.obj.resJson(res, 1, 'ID가 없습니다.', {}, {});
            return;
        }

        let service = null;
        for (let idx = 0; idx < config.openAPI.deploy.services.length; idx++) {
            let tmpService = config.openAPI.deploy.services[idx];

            if (tmpService.id == id) {
                service = tmpService;
                break;
            }
        }
        if (service == null) {
            utils.obj.resJson(res, 2, 'ID에 해당하는 서비스가 없습니다.', {}, {});
            return;
        }

        let opts = {
            req: req,
            res: res,

            service: service,
            record: req.body.record,
            source: req.body.source,
            language: req.body.language
        }
        deploy.deploy(opts, function(code, message, data, err) {
            utils.obj.resJson(res, code, message, data, err);
        });
    }
}

module.exports = MarkdownsView;