var querystring = require('querystring');
var url = require('url');
const fs = require('fs')
var https = require('https');
var request = require('request');
var ejs = require('ejs');
function myPlugin(rawOptions) {
    const options = {
        isProduction: process.env.NODE_ENV === 'production',
        ...rawOptions,
        root: process.cwd(),
    };
    let postData; let config;
    return {
        name: 'vite-plugin-func', // 必须的，将会显示在 warning 和 error 中 
        configResolved(resolvedConfig) {
            // 存储最终解析的配置
            config = resolvedConfig
        },
        configureServer(server) {
            server.middlewares.use((req, res, next) => {
                console.log(new Date(), 'req.url:', req.url)
                if (req.url.indexOf(".flow") != -1 || req.url.indexOf(".func") != -1) {
                    let url = req.url;
                    postData = '';
                    let path
                    let fmodelpath = url.split("?")[0]
                    if (fmodelpath.endsWith(".flow")) {
                        var post_data = { fmodelpath: fmodelpath }
                        path = process.env.VITE_APP_BASE_API + process.env.VITE_APP_SERVER + "/flow/open?pn=";
                    } else {
                        var post_data = { __viewItemId: "" };
                        path = process.env.VITE_APP_BASE_API + process.env.VITE_APP_SERVER + fmodelpath + "?pn="
                    }
                    // let pn = url.split("/")[1];
                    const TokenKey = 'EAP-Token';
                    req.on('data', (chunk) => {
                        post += chunk;
                        postData = querystring.parse(post);
                        // console.log(new Date(), 'PostData:', postData);
                    });
                    var Cookies = {};
                    if (req.headers.cookie != null) {
                        req.headers.cookie.split(';').forEach(l => {
                            var parts = l.split('=');
                            Cookies[parts[0].trim()] = (parts[1] || '').trim();
                        });
                    }
                    let token = Cookies[TokenKey];
                    let requestUrl = path + process.env.VITE_APP_PN;
                    request({
                        url: requestUrl,
                        method: "POST",
                        json: true,
                        headers: {
                            "token": token,
                            "Authorization": "Bearer " + token,
                            "Content-Type": "application/json;charset=UTF-8"
                        },
                        body: post_data
                    }, function (error, response, body) {
                        if (!error && response.statusCode == 200) {
                            // console.log(body) // 请求成功的处理逻辑
                            let pcform;
                            if (body) {
                                if (fmodelpath.endsWith(".flow") && body.outParameter) {
                                    pcform = body.outParameter.task.bizpcform;
                                } else if (fmodelpath.endsWith(".func") && body.dataPack) {
                                    pcform = body.dataPack.path;
                                }
                            }
                            if (!pcform) {
                                res.writeHead(500, {
                                    "Content-Type": "application/json;charset=UTF-8"
                                });
                                res.end(JSON.stringify(body));
                                return;
                            }
                            // var fullPath = "eaptpl/12112/mokuai/shitumulu/biaodan/dtv/1.0.0/desktop/index.html";
                            let content;
                            try {
                                content = fs.readFileSync(pcform, { encoding: 'utf8' })
                            } catch (e) {
                                res.writeHead(404, {
                                    "Content-Type": "application/json;charset=UTF-8"
                                });
                                res.end("pcform error!");
                                return;
                            }
                            const statusCode = 200;
                            if (!body)
                                throw new Error(`No body text found for the ${statusCode} status code`);

                            var html = ejs.render(content, rawOptions)

                            let postDataStr = JSON.stringify(postData || {});
                            let varName = options.varName || 'viteRequestData';
                            let varGlobal = JSON.stringify(options.global || {});
                            let funcName = new Date().valueOf();
                            let queryScript = `
            function _viteGetQuery${funcName}() {
                var url = window.location.search;
                var theRequest = new Object();
                if (url.indexOf("?") != -1) {
                  var str = url.substr(1);
                  strs = str.split("&");
                  for(var i = 0; i < strs.length; i ++) {
                    theRequest[strs[i].split("=")[0]]=decodeURI(strs[i].split("=")[1]);
                  }
                }
                return theRequest;
              }`
                            let titleStr = html.match(/<head(.*?)>/g)[0] || "";
                            html = html.replace(
                                /<head(.*?)>/g,
                                `${titleStr}<script>${queryScript};window.${varName} = Object.assign(_viteGetQuery${funcName}(),${postDataStr}); window._global=${varGlobal}</script>`
                            )
                            res.writeHead(statusCode, {
                                // 'Content-Length': html.length,
                                'Content-Type': 'html'
                            });
                            res.write(html)

                            res.end();
                        } else {
                            res.writeHead(body.status, {
                                "Content-Type": "application/json;charset=UTF-8"
                            });
                            res.end(requestUrl + ":" + JSON.stringify(error) + JSON.stringify(body));
                        }
                    }, (msg) => {
                        res.writeHead(404, {
                            "Content-Type": "application/json;charset=UTF-8"
                        });
                        res.end(JSON.stringify(msg));
                        // console.log(msg)
                    });
                    return;
                } else {
                    next();
                }
            })
        },
    }
}
export default myPlugin;