const glob = require("glob");
const path = require("path");
const fs = require("fs-extra");
const axios = require("axios");
const dayjs = require("dayjs");
const Mustache = require('mustache');
const Checkjson = require(`./Checkjson.js`);
//const smtp = require("smtp-client");
const nodemailer = require("nodemailer");
const conf = require(`../../../adminapi/objects/tribes/itm/adminapi.json`);
const currentmod = "Notifications";
const log = conf.api.activelog.includes(currentmod);
/**
 * To manage any communication between Pagan
 * mayor druid emailing/sms/paper from tribe register smtp, simcard, mail api to Person(s) / Pagan(s)
 * volatile notification message from tribe activities to Pagans / person ()
 *
 */
const Notifications = {};

Notifications.get = (alias, tribeId) => {
  const notiffile = `../../${req.params.tribeId}/notifications/${req.params.alias}.json`;
  const msg = fs.existsSync(notiffile) ? fs.readJSONSync(notiffile) : {};
  return {
    status: 200,
    ref: "Notification",
    msg: "Messagelist",
    data: { notif: [{ tribeId, msg }] },
  };
};
/**
 * Get statistic of registering email phone
 */
Notifications.statmaillist = (tribe) => {
  const statinfo = {};
  let csv = "email/phone;name;srckey\n";
  const src = `../../${tribe}/objects/maillinglists/*.json`;
  console.log(path.resolve(src));
  glob.sync(src).forEach((f) => {
    const name = path.basename(f, ".json");
    const mlst = fs.readJSONSync(f);
    Object.keys(mlst).forEach((c) => {
      csv += `"${c}";"${name}";"${mlst[c].srckeys.join("-")}"\n`;
      mlst[c].srckeys.forEach((s) => {
        if (!statinfo[s]) statinfo[s] = {};
        if (!statinfo[s][name]) statinfo[s][name] = 0;
        statinfo[s][name]++;
      });
    });
  });
  // fichier csv stocker en local en attendant d'avoir un back pour stocker la reponse dans data.csv
  fs.outputFileSync(`../../${tribe}/mailinglst.csv`, csv, "utf-8");
  return {
    status: 200,
    ref: "Notifications",
    msg: "statistics",
    data: statinfo,
  };
};

/**
 * Register an typekey(email) or (phone) key into mailinglist for a tribe
 *
 */
Notifications.registertolist = (key, typekey, tribe, mlist, srckey, uuid) => {
  key = key.toLowerCase();
  typekey = typekey == "telephone" ? "telephonefr" : typekey;
  if (!Checkjson.testformat(key, typekey))
    return {
      status: 400,
      ref: "Notifications",
      msg: "formaterror",
      data: { fielderr: typekey, format: typekey },
    };

  const destin = `../../${tribe}/objects/maillinglists/${typekey}_${mlist}.json`;
  if (!fs.existsSync(destin)) {
    console.log(
      `######## Attention tentative d'ecriture non autorisé,le fichier n'existe pas ${destin} créer le à la main vide {}`
    );
    return {
      status: 406,
      ref: "Notifications",
      msg: "destinnotallow",
      data: { destin },
    };
  }

  const filestorage = fs.existsSync(destin) ? fs.readJsonSync(destin) : {};
  //if (log) console.log(currentmod,`filestorage`,filestorage, key, (filestorage[key]));
  if (filestorage[key]) {
    filestorage[key].dt_update = dayjs().toISOString();
    if (!filestorage[key].srckeys.includes(srckey))
      filestorage[key].srckeys.push(srckey);
    if (!filestorage[key].uuids.includes(uuid))
      filestorage[key].uuids.push(uuid);
  } else {
    filestorage[key] = {};
    filestorage[key].dt_create = dayjs().toISOString();
    filestorage[key].srckeys = [srckey];
    filestorage[key].uuids = [uuid];
  }
  fs.outputJSONSync(destin, filestorage);
  return {
    status: 200,
    ref: "Notifications",
    msg: "registersuccess",
    data: { key, typekey, tribe, mlist, srckey, uuid },
  };
};
/**
 * Unsubscribe an eamil or phone from a mailinglist for a tribe
 */
Notifications.unregisterfromlist = (key, typekey, tribe, mlist) => {
  key = key.toLowerCase();
};
/**
 * Message to send to an alias from an anonymous or not
 */
Notifications.sendcontact = (body, header) => {};
Notifications.sendsms = async (data, tribeId) => {
  /**
   * Never use need wallet in mailjet to test
   * To set up with mailjet see https://dev.mailjet.com/sms/guides/send-sms-api/#authentication
   *
   * @param {string} data.To a phone number with international +3360101010101
   * @param {string} data.Text text to send
   *
   * a conf.sms with {url:"smsurl", Token:"", From:""}
   *
   *
   */

  if (!conf.sms) {
    return {
      status: 412,
      ref: "Notifications",
      msg: "missingconf",
      data: { tribe: tribeId },
    };
  }
  let missingk = [][("To", "Text")].forEach((k) => {
    if (!data[k]) {
      missingk.push(k);
    }
  });
  if (missingk.lenght > 0) {
    return {
      status: 428,
      ref: "Notifications",
      msg: "missingdata",
      data: { missingk: missingk },
    };
  }
  let confsms = conf.sms;
  if (fs.existsSync(`../../adminapi/objects/tribes/itm/${req.session.header.xtribe}.json`)) {
    const conftrib = fs.readJSONSync(
      `../../adminapi/objects/tribes/itm/${req.session.header.xtribe}.json`
    );
    if (conftrib.sms) confsms = conftrib.sms;
  }
  data.From = confsms.From;
  const sendsms = await axios.post(confsms.url, {
    headers: {
      Authorization: `Bearer ${confsms.MJ_TOKEN}`,
      "Content-Type": "application/json",
    },
    body: JSON.stringify(data),
  });
  if (sendsms.status == 200) {
    return {
      status: 200,
      ref: "Notifications",
      msg: "successfullsentsms",
      data: {},
    };
  } else {
    return {
      status: sendsms.status,
      ref: "Notifications",
      msg: "errsendsms",
      data: { err: sendsms.data },
    };
  }

  /* si tout se passe bien:
  {
  "From": "MJPilot",
  "To": "+33600000000",
  "Text": "Have a nice SMS flight with Mailjet !",
  "MessageId": "2034075536371630429",
  "SmsCount": 1,
  "CreationTS": 1521626400,
  "SentTS": 1521626402,
  "Cost": {
    "Value": 0.0012,
    "Currency": "EUR"
  },
  "Status": {
    "Code": 2,
    "Name": "sent",
    "Description": "Message sent"
  }
}
}
*/
};

Notifications.manageemail = (data, template, tribe) => {
  /**
   *  Manage email publipostage
   *  data must contain emailsto
   *  data optionaly can contain Cc,Bcc as array of emails and attachments as array of filename (into the server)
   *  Await the 1st email
   */
  //console.log(data)
  if (!data.emailsto || data.emailsto.length == 0) {
    return {
      status: 406,
      ref: "Notifications",
      msg: "emailstomissing",
      data: data,
    };
  }
  if (typeof data.emailsto === "string") data.emailsto = [data.emailsto];
 
  if (!fs.existsSync(path.resolve(template))){
    return {
      status: 404,
      ref: "Notification",
      msg: "templatenotfound",
      data: { template:path.resolve(template) },
    }
  }
  const tplemail = require(path.resolve(template));
  let sendit={status:200,ref:"Notifications",msg:"successfullsend"};
  data.emailsto.forEach(async (e, i) => {
    if (Checkjson.testformat(e, "email")) {
      const dat = {};
      dat.to = e;
      dat.subject = Mustache.render(tplemail.subject, data);
      dat.html = Mustache.render(tplemail.html, data);
      dat.text = Mustache.render(tplemail.text, data);
      dat.Cc=tplemail.Cc
      dat.Bcc=tplemail.Bcc
      /* @TODO issue with data.Cc need to test
      if (data.Cc){
        dat.Cc+=","+data.Cc.join(',')
      }
      if (data.Bcc){
        dat.Bcc+=","+data.Bcc.join(',')
      }
        */
      if (data.attachments){
        data.attachments.forEach(a=>tplemail.attachments.push(a))
      }
      if (i == 0) {
        sendit = await Notifications.sendmail(dat, tribe);
        if (sendit.status != 200) return {status:406,ref:"Notifications",msg:"emailnotsent"};
      } else {
        Notifications.sendmail(dat, tribe);
      }
    } else {
      // not a well formated email @todo add a log file to follow it
    }
  });
  return sendit;
};

Notifications.sendmail = async (data, tribe) => {
  /**
   *    * in conf global or in /itm/{tribe}.json must have valid parameter emailcontact must be authorized by the smtp
   *  "emailcontact": "noreply@smatchit.io",
   *  "smtp": {
   *    "host": "smtp-relay.brevo.com",
   *    "port": 587,
   *    "secure": false,
   *    "auth": {
   *     "user": "xx",
   *    "pass": "yy"
   *    }
   *   }
   * See https://nodemailer.com/message/ for available fields to add
   * @param {string} [data.from] an email authorized by smtp used priority from header xtribe
   * @param {string} data.to list of email separate by ,
   * @param {string} data.subject
   * @param {string} data.html
   * @param {string} data.text
   * @param {string} [data.Cc] list of email in copy
   * @param {string} [data.Bcc] list of email in hidden copy
   * @param {string} [data.attachments] array of
   *  {filename:'filename.txt',content:'txt'},
   *  {filename:'img.svg',path:"https://....svg", contentType:'image/svg'}
   *  {filename:'img.svg',path:"https://....svg", contentType :'text/plain'}
   *  {filename:'img.png',path:"data:text/svg;base64.aGVsbG8gd29ybGQ="}
   *
   * @example data
   * {"to":"wall-ants@ndda.fr",
   *  "subject":"Test",
   *  "html":"<h1>test welcome</h1>",
   *  "text":"test welcome",
   *  "attachments":[{filename:"text.txt",pathfile:"/media/phil/textA.txt","contenttype":"text/plain"}]
   *  }
   * @return {object}
   *  { status: 200, ref:"pagans",msg:"",data: {  } }
   *
   *
   */
  if (!conf.smtp || !conf.emailcontact) {
    return {
      status: 412,
      ref: "Notifications",
      msg: "missingconf",
      data: { tribe: tribe },
    };
  }
  if (!data.from) {
    data.from = conf.emailcontact;
  }
  let missingk = [];
  ["from", "to", "subject", "html", "text"].forEach((k) => {
    if (!data[k]) {
      missingk.push(k);
    }
  });
  if (missingk.lenght > 0) {
    return {
      status: 428,
      ref: "Notifications",
      msg: "missingdata",
      data: { missingk: missingk },
    };
  }
  let confsmtp = conf.smtp;
  const conftribfile = `../../adminapi/objects/tribes/itm/${tribe}.json`;
  if (fs.existsSync(conftribfile)) {
    const conftrib = fs.readJSONSync(conftribfile);
    if (!conftrib.emailcontact){
      return {
        status: 428,
        ref: "Notifications",
        msg: "missingemailcontactinconf",
        data: { tribe },
      };  
    }
    confsmtp = conftrib.smtp;
    if (!data.from || data.from == conf.emailcontact) data.from = conftrib.emailcontact;
  }
  const transporter = await nodemailer.createTransport(confsmtp);
  if (data.filelist) {
    data.attachments = [];
    let missingfile = [];
    data.filelist.forEach((fo) => {
      if (fs.existsSync(fo.pathfile)) {
      } else {
        missingfile.push(fo.pathfile);
      }
    });
    if (missingfile.lenght > 0)
      return {
        status: 428,
        ref: "Notifications",
        msg: "missingfile",
        data: { missingfile: missingfile },
      };
  }
  //console.log("data:", data);
  const res = await transporter.sendMail(data);
  //console.log(res)
  if (
    res.accepted &&
    data.to.split(",").reduce((acc, m) => acc && res.accepted.includes(m), true)
  ) {
    data.accepted = res.accepted;
    data.rejected = res.rejected;
    return {
      status: 200,
      ref: "Notifications",
      msg: "successfullsentemail",
      data,
    };
  } else if (res.accepted && res.rejected) {
    data.accepted = res.accepted;
    data.rejected = res.rejected;
    return { status: 410, ref: "Notifications", msg: "errsendmail", data };
  } else {
    data.errmailer = res.err;
    return { status: 417, ref: "Notifications", msg: "errsendmail", data };
  }
};

module.exports = Notifications;