var path = require('path');
var fs = require('fs');
const opentelemetry = require('@opentelemetry/api');
var sysStats = require("../sys_stats");
var System = require("../models/system");
var Talkgroup = require("../models/talkgroup");
var { callModel: Call } = require("../models/call");


const { PutObjectCommand, S3Client } = require("@aws-sdk/client-s3");
const { fromIni } = require("@aws-sdk/credential-providers");

var s3_endpoint = process.env['S3_ENDPOINT'] != null ? process.env['S3_ENDPOINT'] : 'https://s3.us-west-1.wasabisys.com';
var s3_region = process.env['S3_REGION'] != null ? process.env['S3_REGION'] : 'us-west-1';
var s3_bucket = process.env['S3_BUCKET'] != null ? process.env['S3_BUCKET'] : 'openmhz-west';
var s3_profile = process.env['S3_PROFILE'] != null ? process.env['S3_PROFILE'] : 'wasabi-account';


const client = new S3Client({
  credentials: fromIni({ profile: s3_profile }),
  endpoint: s3_endpoint,
  region: s3_region,
  maxAttempts: 3
});

exports.upload = async function (req, res, next) {

  process.nextTick(async () => {
    if (!req.file || ((path.extname(req.file.originalname) != '.m4a') && (path.extname(req.file.originalname) != '.mp3'))) {
      console.warn("[" + req.params.shortName + "] Error file name is wrong or file does not exist");
      res.status(500);
      res.send("Error, invalid filename:\n");
      return;
    }
    var shortName = req.params.shortName.toLowerCase();
    var apiKey = req.body.api_key;
    var talkgroupNum = parseInt(req.body.talkgroup_num);
    var freq = parseFloat(req.body.freq);
    var time = new Date(parseInt(req.body.start_time) * 1000);
    var stopTime = new Date();
    if (req.body.stop_time) {
      var stopTime = new Date(parseInt(req.body.stop_time) * 1000);
    }
    var startTime = req.body.start_time;
    var emergency = parseInt(req.body.emergency);

    let errorCount = parseInt(req.body.error_count);
    let spikeCount = parseInt(req.body.spike_count);

    if (Number.isNaN(errorCount)) {
      errorCount = 0;
    }
    if (Number.isNaN(spikeCount)) {
      spikeCount = 0;
    }

    try {
      var srcList = JSON.parse(req.body.source_list);
    } catch (err) {
      var srcList = [];
      console.warn("[" + req.params.shortName + "] Error /:shortName/upload Parsing Source/Freq List -  Error: " + err);
      res.status(500);
      res.send("Error parsing sourcelist " + err);
      return;
    }

    let item = null;
    const span = opentelemetry.trace.getActiveSpan();
    span.setAttribute('call.shortName', shortName);
    span.setAttribute('call.talkgroupNum', talkgroupNum);
    span.setAttribute('call.startTime', startTime);



    // Validate that the system exists and the API key is correct

    try {
      item = await System.findOne({ 'shortName': shortName }, ["key", "ignoreUnknownTalkgroup"]);
    } catch (err) {
      span.setStatus({
        code: opentelemetry.SpanStatusCode.ERROR,
        message: "Error /:shortName/upload - Error: " + err,
      });
      console.warn("[" + req.params.shortName + "] Error /:shortName/upload - Error: " + err);
      res.status(500);
      res.send("Error, invalid shortName:\n" + err);
      return;
    }

    if (!item) {
      span.setStatus({
        code: opentelemetry.SpanStatusCode.ERROR,
        message: "Error /:shortName/upload API Key Mismatch - Provided key: " + apiKey,
      });
      console.info("[" + req.params.shortName + "] Error /:shortName/upload ShortName does not exist");
      res.status(500);
      res.send("ShortName does not exist: " + shortName + "\n");
      return;
    }
    if (apiKey != item.key) {
      span.setStatus({
        code: opentelemetry.SpanStatusCode.ERROR,
        message: "Error /:shortName/upload API Key Mismatch - Provided key: " + apiKey,
      });
      console.warn("[" + req.params.shortName + "] Error /:shortName/upload API Key Mismatch - Provided key: " + apiKey);
      res.status(500);
      res.send("API Keys do not match!\n");
      return;
    }

    // Blocking sensitive talkgroups
    if ((shortName == "hennearmer") && ((talkgroupNum == 3421) || (talkgroupNum == 3423))) {
      span.setStatus({
        code: opentelemetry.SpanStatusCode.ERROR,
        message: "Sensitive Talkgroup",
      });
      res.status(200).end();
      return;
    }

    if (item.ignoreUnknownTalkgroup == true) {
      talkgroupExists = await Talkgroup.exists({
        'shortName': shortName,
        'num': talkgroupNum
      });

      if (!talkgroupExists) {
        try {
          fs.unlinkSync(req.file.path)
          //file removed
        } catch (err) {
          console.log("[" + call.shortName + "] error deleting: " + req.file.path);
        }

        res.status(500);
        res.send("Talkgroup does not exist, skipping.\n");
        span.setStatus({
          code: opentelemetry.SpanStatusCode.ERROR,
          message: "Ignore Unknown Talkgroup Set - Talkgroup does not exist: " + talkgroupNum + " ShortName: " + shortName,
        });

        return;
      }
    }
    // Add in an API Key check



    res.status(200).end();


    var local_path = "/" + shortName + "/" + time.getFullYear() + "/" + (time.getMonth() + 1) + "/" + time.getDate() + "/";
    var object_key = "media/" + shortName + "-" + talkgroupNum + "-" + startTime + path.extname(req.file.originalname);

    var endpoint = s3_endpoint;
    var bucket = s3_bucket;
    var url = s3_endpoint + "/" + s3_bucket + "/" + object_key;

    var call = new Call({
      shortName: shortName,
      talkgroupNum: talkgroupNum,
      objectKey: object_key,
      endpoint: endpoint,
      bucket: bucket,
      time: time,
      name: talkgroupNum + "-" + startTime + ".m4a",
      freq: freq,
      errorCount: errorCount,
      spikeCount: spikeCount,
      url: url,
      emergency: emergency,
      path: local_path,
      srcList: srcList,
      len: -1
    });


    try {
      if (req.body.call_length) {
        call.len = parseFloat(req.body.call_length);
      } else {
        call.len = (stopTime - time) / 1000;
      }
    } catch (err) {
      console.error(err);
    }
    let fileContent;
    try {
      fileContent = fs.readFileSync(req.file.path);
      //s3Src = fs.createReadStream(req.file.path);
    } catch (err) {
      span.setStatus({
        code: opentelemetry.SpanStatusCode.ERROR,
        message: "Unable to open file: " + req.file.path + " Error: " + err,
      });
      console.error("[" + call.shortName + "] Unable to open file: " + req.file.path + " Error: " + err);
      return;
    }
    const command = new PutObjectCommand({
      Bucket: s3_bucket,
      Key: object_key,
      Body: fileContent,
      ACL: 'public-read'
    });

    try {
      await client.send(command);

    } catch (err) {
      span.setStatus({
        code: opentelemetry.SpanStatusCode.ERROR,
        message: "Upload Error: " + err + " Filename: " + call.name + " content-length: " + req.headers['content-length'] + " Key: " + object_key + " Bucket: " + s3_bucket,
      });
      console.warn("[" + call.shortName + "] Upload Error: " + err + " Filename: " + call.name + " content-length: " + req.headers['content-length'] + " Key: " + object_key + " Bucket: " + s3_bucket);
      /*res.status(500);
      sysStats.addError(call.toObject());
      res.contentType('json');
      res.status(500);
      res.send(JSON.stringify({
        success: false,
        error: "File Upload"
      }));*/
    }
    
    try {
      await call.save();
      sysStats.addCall(call.toObject());
      // we only want to notify clients if the clip is longer than 1 second.
      if (call.len >= 1) {
        req.call = call.toObject();
        next();
      }
    } catch (err) {
      console.warn("[" + call.shortName + "] Error saving call: " + err);
      span.setStatus({
        code: opentelemetry.SpanStatusCode.ERROR,
        message: "Error saving call: " + err,
      });
      /*res.status(500);
      sysStats.addError(call.toObject());
      res.contentType('json');
      res.status(500);
      res.send(JSON.stringify({
        success: false,
        error: "File Upload"
      }));*/
    }

    try {
      fs.unlinkSync(req.file.path);
    } catch (err) {
      console.warn("There was an Error uploading an deleting: " + req.file.path);
    };
  });
}