const express = require("express");
const fs = require("fs-extra");
const dayjs = require("dayjs");
const path = require("path");
// Classes
const Pagans = require("../models/Pagans.js");
const Odmdb = require("../models/Odmdb.js");
// Middlewares
const checkHeaders = require("../middlewares/checkHeaders.js");
const isAuthenticated = require("../middlewares/isAuthenticated.js");

const conf = require(`../../../conf.json`);
const currentmod = "pagans";
const log = conf.api.activelog.includes(currentmod);

const router = express.Router();

/**
 * Alias exist then return public key or not 
 * @api {get} adminapi/pagans/alias/:alias - alias Get 
 * @apiName isalias
 * @apiGroup Pagans
 * @apiDescription If alias exist return its publickey
 * 
 * @param {string} alias 
 * 
 * @apiError {json} aliasdoesnotexist  
 * @apiErrorExample {json}
 * HTTP/1.1 404 Not Found
   {"status":404,"ref":"pagans","msg":"aliasdoesnotexist","data": { alias}}
 *
 * @apiSuccess {object}  indexfile content
 * @apiSuccessExample {json} Success-Response:
 * HTTP/1.1 200 OK
 * {"status":200, ref:"pagans","msg":"aliasexist","data": { alias, publicKey }}
 *  *
 **/
router.get("/alias/:alias", (req, res) => {
  const getalias = Pagans.getalias(req.params.alias);
  res.status(getalias.status).send(getalias);
});
/**
 * @api {get} adminapi/pagans/logout - pagan Logout
 * @apiName Removetoken
 * @apiGroup Pagans
 * @apiDescription Remove server's token only the owner of the token (no one else can delete a token )
 *
 * @apiSuccess {object}  indexfile content
 * @apiSuccessExample {json} Success-Response:
 * HTTP/1.1 200 OK
 * {status: 200, ref: "Pagans", msg: "logout"
 *
 */
router.get("/logout", checkHeaders, isAuthenticated, (req, res) => {
  if (log) console.log(currentmod, "Logout:", req.session.header);
  const logout = Pagans.logout(
    req.session.header.xalias,
    req.session.header.xtribe,
    req.session.header.xdays,
    req.session.header.xhash
  );
  res.status(logout.status).json(logout);
});
/**
 * @api {get} adminapi/pagans/isauth  - pagan isAuthenticated?
 * @apiName isAuth
 * @apiGroup Pagans
 * @apiDescription Check if pagan's token is still valid
 *
 * @apiError (400) missingheaders
 * @apiError (400) xaliasdoesnotexist
 * @apiError (400) signaturefailled
 * @apiError (401) aliasanonymous
 * @apiError (404) tribedoesnotexist
 *
 * @apiSuccess (200) valid
 * {object} data contains indexfile requested
 *
 */
router.get("/isauth", checkHeaders, isAuthenticated, (req, res) => {
  res.status(200).send({
    status: 200,
    ref: "headers",
    msg: "authenticated",
    data: {
      xalias: req.session.header.xalias,
      xprofils: req.session.header.xprofils,
    },
  });
});

/**
 * @api {post} adminapi/pagans  - pagan Post
 * @apiName addpagan
 * @apiGroup Pagans
 * @apiDescription
 *  Create a pagan account from alias, publickey, if trusted recovery =>
 *  If trustedtribe is true then create a person in xtribe/person/xalias.json with profil.auth={email,privatekey, passphrase}.
 * 
 *  Middleware isAuthenticated check that:
 *  - xhash is well signed from private key linked to the publickey of alias
 *  - check that alias does not already exist (if yes then verifiedsigne would be false)
 * Need to wait next block chain to be sure that alias is register in the blokchain
 * @apiBody {string} alias available (that does not already exist check get /api/alias/:alias that must return 404).
 * @apiBody {string} publickey  
 * @apiBody {string} [email] if specified then an email is sent to it with public and privatekey
 * @apiBody {string} [privatekey]
 * @apiBody {string} [passphrase] if not specidied => passphrase=""
 * @apiBody {string} [trustedtribe] the tribename  if not specified then the process will only create a pagan identity, else an item person is create for trustedtribe (that must exist with profil 'person'). To create a person with an existing pagan identity use put /api/person/:alias after authenticated you (headers). In case a person is created then we use all valid other apiBody respecting the persons schema (see put persons)
 * 
 * @apiError {json} objectNotfound the file does not exist 
 * @apiErrorExample {json}
 * HTTP/1.1 404 Not Found
   {"status":404,"ref":"Odmdb","msg":"pathnamedoesnotexist","data":{indexpath}}
 *
 * @apiSuccess {object}  indexfile content
 * @apiSuccessExample {json} Success-Response:
 * HTTP/1.1 200 OK
 * {"status":200, "ref":"Odmdb", "msg":"indexexist", "data":{indexname,content:{index file}}
 * 
 */
router.post("/", checkHeaders, isAuthenticated, async (req, res) => {
  if (log) console.log(currentmod, "post with", req.body);
  const role = {
    xalias: req.session.header.xalias,
    xprofils: req.session.header.xprofils,
  };
  const emailregex =
    /^(([^<>()[\]\\.,;:\s@\"]+(\.[^<>()[\]\\.,;:\s@\"]+)*)|(\".+\"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/;
  if (
    !(
      req.body.trustedtribe &&
      req.body.email &&
      emailregex.test(req.body.email)
    )
  ) {
    res.status(400).json({
      status: 400,
      ref: "Pagans",
      msg: "emailerr",
      data: { email: req.body.email },
    });
    return;
  }
  const objpagan = { alias: req.body.alias, publickey: req.body.publickey };
  console.log(path.resolve(`../objects/pagans`));
  const newpagan = Odmdb.cud(`../objects/pagans`, "C", objpagan, role);
  const createprocess = {
    status: 200,
    ref: "Pagans",
    msg: "successfulcreate",
    data: { alias: req.body.alias },
  };
  if (newpagan.status == 200) {
    if (req.body.email) {
      const emailsent = await Pagans.sendmailkey({
        alias: req.body.alias,
        privatekey: req.body.privatekey,
        tribe: req.session.header.xtribe,
        passprhase: req.body.passphrase,
        publickey: req.body.publickey,
        email: req.body.email,
        lg: req.session.header.xlang,
      });
      createprocess.data.emailsent = emailsent.status == 200;
      createprocess.data.email = req.body.email;
      createprocess.data.tribe = req.session.header.xtribe;
      if (emailsent.status != 200) {
        console.log("pagans err to send email emailsent: ", emailsent);
        createprocess.data.emailerror = emailsent.data.err;
      }
    }
    if (req.body.trustedtribe) {
      const persondata = {
        alias: req.body.alias,
        owner: req.body.alias,
        profils: ["anonymous", "pagans", "persons"],
        recoveryauth: {
          email: req.body.email,
          privatekey: req.body.privatekey,
          publickey: req.body.publickey,
          passphrase: req.body.passphrase,
        },
      };
      const personup = Odmdb.cud(
        `../../${req.body.trustedtribe}/objects/persons`,
        "C",
        persondata,
        { xprofils: ["anonymous", "pagans"], xalias: req.body.alias }
      );
      if (log) console.log(currentmod, "person create", personup);
      if (personup.status == 200) {
        createprocess.data.createperson = true;
      } else {
        createprocess.data.createperson = false;
        createprocess.data.errorperson = true;
        createprocess.data.errpersonup = personup.data;
        if (log)
          console.log(
            currentmod,
            "Warning pagan created but person not created and no recovery registration",
            personup
          );
      }
      res.status(createprocess.status).json(createprocess);
    } else {
      res.status(newpagan.status).json(newpagan);
    }
  } else {
    //error to create pagan certaily already exist
    res.status(newpagan.status).json(newpagan);
  }
});
/**
 * @api {delete} adminapi/pagans/alias/:alias - pagan Delete
 * @apiName deletepagan
 * @apiGroup Pagans
 * @apiDescription
 *  Delete an alias and his publickey, this mean that publickey disapear as well as alias. We set dt_delete
 * */
router.delete("/alias/:alias", checkHeaders, isAuthenticated, (req, res) => {
  const personpath = `../objects/pagans`;
  const role = {
    xalias: req.session.header.xalias,
    xprofils: req.session.header.xprofils,
  };
  req.session.header.role;
  const delperson = Odmdb.cud(
    personpath,
    "U",
    { alias: req.params.alias, dt_delete: dayjs().toISOString() },
    role,
    true
  );
  if (log)
    console.log(
      currentmod,
      `DELETE person ${personpath}/${req.params.alias}.json `
    );
  if (log) console.log(delperson);
  res.status(delperson.status).json(delperson);

  if (log)
    console.log(
      `DELETE pagans /api/adminapi/objects/pagans/${req.params.alias}.json`
    );
  const result = Pagans.delete(req.params.alias, req.session.header);
  res.status(result.status).send(result);
});
/**
 * @api {delete} adminapi/pagans/person/:tribe/:alias - person Delete
 * @apiName deleteperson
 * @apiGroup Pagans
 * @apiDescription
 *  Unsubscribe a person to a tribe => remove a person item and all data link to this alias. An asynchrone process turn each day to clean data in tribe, if a persons does not exist anymore in the tribe. Pagans alias is still existing as it is autonomous. It is possible to delete pagans see "pagan Delete".
 * @apiHeader {array} xprofils list of profil of authenticated user
 * @apiHeader {string} xalias current user
 * @apiParam  {string} tribe where person alias exist
 * @apiParam   {string} alias to delete as person
 * */
router.delete(
  "/person/:tribe/:alias",
  checkHeaders,
  isAuthenticated,
  (req, res) => {
    const personpath = `../../${req.params.tribe}/objects/persons`;
    const role = {
      xalias: req.session.header.xalias,
      xprofils: req.session.header.xprofils,
    };
    req.session.header.role;
    const delperson = Odmdb.cud(
      personpath,
      "D",
      { alias: req.params.alias },
      role,
      true
    );
    if (log)
      console.log(
        currentmod,
        `DELETE person ${personpath}/${req.params.alias}.json `
      );
    if (log) console.log(currentmod, "delete person ", delperson);
    res.status(delperson.status).json(delperson);
  }
);

/**
 * @api {get} adminapi/pagans/person/:alias - person Get
 * @apiName getpersondata
 * @apiDescription Get person information from his alias for a xtribe (data and profils per apps)
 * @apiGroup Pagans
 *
 * @apiParam {string} alias
 *
 * @apiSuccess (200) personExist
 * @apiSuccessExample {json}
 * {status:200, ref:"pagans",msg:"personexist",data: { person } }
 *
 * @apiError (404) Notfound
 * @apiErrorExample {json}
 *  {status: 404, ref:"pagans",msg:"persondoesnotexist",data: { person } }
 *
 * @todo check accessright  for req.session.header.xalias to see if jhe can get person data
 * if req.param.alias ==  req.session.header.xalias  => Owner
 * else need accessright to on person  set at R
 * */
router.get("/person/:alias", checkHeaders, isAuthenticated, (req, res) => {
  console.log(
    path.resolve(`../../${req.session.header.xtribe}/objects/persons`)
  );
  const getperson = Odmdb.r(
    `../../${req.session.header.xtribe}/objects/persons`,
    req.params.alias,
    { xprofils: req.session.header.xprofils, xalias: req.session.header.xalias }
  );
  res.status(getperson.status).send(getperson);
});

/**
 * @api {put} adminapi/pagans/person/:tribe - person Put
 * @apiName updateperson
 * @apiGroup Pagans
 * @apiDescription add a person = alias in tribe. xalias must be authenticated. This end point have to be use the first time a person is create then use  item Update PUT /api/adminapi/odmdb/itm/:tribe/persons.<br> This endpoint is the only way to change profils of a person by itself (authenitcated alias = person.alias) and can be done only with req.body.addprofils req.body.removeprofils.
 * @apiHeader {string} xhash authenthicate hash with current user keys
 * @apiHeader {string} xalias current user
 * @apiHeader {string} xprofils profil list
 * @apiParam {string} tribe an existing tribe
 * @apiBody {object} schema:persons <a href='https://smatchit.io/smatchit/schema/persons.json' target='_blank'>https://dnstribe/tribe/schema/persons.json</a>
 * @apiBody {string} [addprofils] must be alone no other Body field
 * @apiBody {string} [removeprofils] must be alone
 */
router.put("/person/:tribe", checkHeaders, isAuthenticated, (req, res) => {
  //console.log(req.body);
  const pathobj = `../../${req.params.tribe}/objects/persons`;
  const action = fs.existsSync(`${pathobj}/itm/${req.body.alias}.json`)
    ? "U"
    : "C";
  //set req.body to be in line with schema
  if (
    action == "U" &&
    ((req.body.addprofils &&
      ["seekers", "recruiters", "adminrecruiters"].includes(
        req.body.addprofils
      )) ||
      (req.body.removeprofils &&
        ["seekers", "recruiters", "adminrecruiters"].includes(
          req.body.removeprofils
        )))
  ) {
    const person = fs.readJsonSync(`${pathobj}/itm/${req.body.alias}.json`);
    if (!person.profils.includes(req.body.addprofils)) {
      if (req.body.addprofils) {
        person.profils.push(req.body.addprofils);
      }
      if (
        req.body.removeprofils &&
        person.profils.includes(req.body.removeprofils)
      ) {
        person.profils = person.profils.filter(
          (e) => e !== req.body.removeprofils
        );
        Odmdb.cud(
          `../../${req.params.tribe}/objects/${req.body.removeprofils}`,
          "D",
          { alias: req.body.alias },
          {
            xprofils: req.session.header.xprofils,
            xalias: req.session.header.xalias,
          }
        );
      }
    }
    person.dt_update = dayjs().toISOString();
    fs.outputJSONSync(`${pathobj}/itm/${req.body.alias}.json`, person);
    //console.log(person)
    res.status(200).json({
      status: 200,
      ref: "Pagans",
      msg: "profilupdate",
      data: { alias: person.alias, profils: person.profils },
    });
  }
  if (!req.body.addprofils && !req.body.removeprofils) {
    if (!req.body.profils) {
      req.body.profils = ["anonymous", "pagans", "persons"];
    }
    const personup = Odmdb.cud(pathobj, action, req.body, {
      xprofils: req.session.header.xprofils,
      xalias: req.session.header.xalias,
    });
    if (log) console.log(currentmod, " personupdate or create:", personup);
    res.status(personup.status).json(personup);
  }
});

/**
 * @api {post} /adminapi/pagans/keyrecovery - recovery keys
 * @apiName  recoveryKey
 * @apiGroup Pagans
 * @apiDescription Send mails with all registers identities (one per alias where recoveryauth.email is register). Search can be request by email or by alias for a tribe. It is looking for in person.recoveryauth.email to send keys. One mail is sent by alias. So if n alias has the same recoveryaut.email then it will send n email.
 * @apiBody {string} emailalias type of search (email or alias)
 * @apiBody {string} tribe tribename into looking for
 * @apiBody {string} search a text containing email or an alias to looking for
 *
 * @apiSuccess {object}  send recovery email
 * @apiSuccessExample {json} Success-Response:
 * HTTP/1.1 200 OK
 * {"status":200, "ref":"Pagans", "msg":"recoveryemailsent", "data":{email,tribe,numberemailsent'}}
 *
 * @apiError (404) {string} recoveryemailnotfound email does not exist for this tribe
 * @apiErrorExample {json}
 *  {status: 404, ref:"pagans",msg:"recoveryemailnotfound",data: { tribe,email } }
 *
 */
router.post("/keyrecovery", checkHeaders, (req, res) => {
  const recores=Pagans.keyrecovery(req.body.emailalias,req.body.tribe,req.body.search,req.session.header.xlang)
  res.status(recores.status).json(recores);
});

module.exports = router;