//const { argv } = require("process");
const fs = require("fs-extra");
//const mustache = require("mustache");
const bodyParser = require("body-parser");
const glob = require("glob");
const path = require("path");
const cors = require("cors");
const express = require("express");
const process = require("process");

/*******************************************
SEE README.md to have a quick start 
********************************************/

if (!fs.existsSync("/etc/nginx/nginx.conf")) {
    setupdone=false;
    console.log(
    "\x1b[31m Check documentation, nginx have to be installed on this server first, no /etc/nginx/nginx.conf available, install then rerun yarn command.");
}
if (!fs.existsSync("../../conf.json")) {
  console.log("Warning, this is a first install you must run 'node setup.js dns=domainename user=sudoerlinux'")
  process.exit(); 
}

const conf = require(path.resolve(`../../conf.json`));
let doms = conf.dns; // only dns of town during the init process
const currentmod = "apxtri";
const log = conf.api.activelog.includes(currentmod);

let tribelist = {};
if (fs.existsSync(`../../idx/tribeId_all.json`)) {
  tribelist = fs.readJsonSync(`../../idx/tribeId_all.json`);
}
let tribeIds = Object.keys(tribelist);
// context is store in /itm/tribename.json ={contexte:{routes:[],models:[{model:,tplstringslg:[]}]}
// routes={url,route} check how to add plugin tribe route later
// keep only the 2 last part (.) of domain name to validate cors with it (generic domain)
let routes=[]
tribeIds.forEach((t) => {
  tribelist[t].dns.forEach((d) => {
    const dm = d.split(".").slice(-2).join(".");
    if (!doms.includes(dm)) doms.push(dm);
  });
  const context={};
  const pathtr=path.resolve(`../../${t}`);
  context.routes=[]
  tribroutes=glob.sync(`${pathtr}/ap*/routes/*.js`).map(f=>{
      const rt=`/${t}/${path.basename(f, ".js")}`
      context.routes.push(rt)
      return { url: rt, route: f };
  });
  context.models=glob.sync(`${pathtr}/ap*/models/*.js`).map(f=>{
    const modname=`${path.basename(f, ".js")}`
    return {
       model: modname,
       tplstrings:glob.sync(`${pathtr}/objects/tplstrings/${modname}_*.json`).map(l=>path.basename(l,'.json').split("_")[1] ) 
      }
  })
  const conft=`../../itm/${t}.json`
  const ctx=fs.readJsonSync(conft)
  ctx.context=context
  fs.outputJSONSync(conft,ctx,{spaces:2});
  routes=routes.concat(tribroutes);
});
const app = express();
// load express parameter from conf
Object.keys(conf.api.appset).forEach((p) => {
  app.set(p, conf.api.appset[p]);
});
// To set depending of data form or get size to send
app.use(bodyParser.urlencoded(conf.api.bodyparse.urlencoded));
// To set depending of post put json data size to send
app.use(express.json({limit:'10mb'}));
app.use(bodyParser.json(conf.api.bodyparse.json));
app.disable("x-powered-by"); // for security
app.locals.tribeids = tribeIds;
if (log){
  console.log(
    currentmod,
    " Allowed DOMs to access to this apxtri server:",
    JSON.stringify(doms)
  );
  console.log(currentmod, " app.locals.tribeids", app.locals.tribeids);
}
 // Cors management
let originlst = "test";
doms.forEach((d) => {
  originlst += `|${d.replace(/\./g, "\\.")}`;
});
const regtxt = `^http.?:\/\/(${originlst})`;
let cor = false;
const regorigin = new RegExp(regtxt);
app.use((req, res, next) => {
  if (req.headers.origin == undefined) {
    cor = true;
  } else {
    cor = regorigin.test(req.headers.origin);
  }
  if (log)
    console.log(
      currentmod,
      "request origin:",
      req.headers.origin,
      "testcors:",
      cor, "headers allowed: [", conf.api.exposedHeaders.join(','),"] match with reg:", regtxt
    );
  cors({
    origin: cor,
    allowedHeaders: conf.api.exposedHeaders,
    exposedHeaders: conf.api.exposedHeaders,
    credentials: true,
    preflightContinue: false,
    optionsSuccessStatus: 204
  });
  next();
});

// Routers add any routes from /routes and /plugins
let logroute = "Routes available on this apxtri instance: \n";
routes.forEach((r) => {
  try {
    logroute += r.url.padEnd(30, " ") + r.route + "\n";
    app.use(r.url, require(r.route));
  } catch (err) {
    logroute += " (err check it module.exports=router;? or ...)\n======\n ";
    console.log("raise err-:", err);
  }
});
if (log) {
  console.log(currentmod, logroute);
  if (process.env.NODE_MODE == "dev")
    console.log(
      `\x1b[42m############################################################################################\x1b[0m\n\x1b[42mThis is dev conf accessible in http://dev-ants to switch this as production, you must run:\n 1 - 'yarn dev nationId:ants townId:dev dns:dev-ants' to conf your town and check it.\n 2 - 'yarn startpm2'\n Where:\n\x1b[42m * nationId have to exist in the nationchains\n * townId new or if exist must have the same current dns,\n * dns domaine that has to redirect 80/443 into this server.\n Check README's project to learn more.\x1b[0m\n To work with apxweb for the front use http://dev-ants/apxwebapp/www/websitename/src/index.html to use the api during dev process\n\x1b[42m############################################################################################\x1b[0m`
    );
}

app.listen(conf.api.port, () => {
  let webaccess = `api waits request on port:${conf.api.port} for`;
  conf.dns.forEach((u) => {
    webaccess += `${u}/api/ `;
  });
  if (log) console.log(currentmod, webaccess);
});
console.log(
  "\x1b[42m\x1b[37m",
  "Made with love for people's freedom, enjoy !!!",
  "\x1b[0m"
);