var createError = require('http-errors');
var express = require('express');
var path = require('path');
var cookieParser = require('cookie-parser');
var logger = require('morgan');
var fs = require('fs')
var AWS = require('aws-sdk');


// 이미지를 저장할 버킷 이름
var bucketName = "kindofyourdogimage";
// s3 버킷의 엔드 포인트
var bucketRegion = "ap-northeast-2";
// AWS Cognito 인증
var identityPoolId = "ap-northeast-2:7cba9a17-588b-40d6-8c70-eb8ba4d573be";

// AWS의 config 정보를 Update해준다 -> 이용자가 S3 버킷에 접근 가능하다
AWS.config.update({
  region:bucketRegion,
  credentials:new AWS.CognitoIdentityCredentials({
    IdentityPoolId:identityPoolId 
  })
})

// 내가 사용할 S3
var s3 = new AWS.S3({
  apiVersion: "2006-03-01",
  params: {Bucket: bucketName}
});

const fileName = 'puppy.jpg';

// 파일 업로드
const uploadFile = (fileName) => {
  const fileContent = fs.readFileSync(fileName);
  const params = {
    Bucket: bucketName,
    Key: fileName, // File name you want to save as in S3
    Body: fileContent }
;
  s3.upload(params, function(err, data) {
    if (err) { throw err; }
    console.log(`File uploaded successfully. ${data.Location}`);
  });
};
uploadFile(fileName);

// rekognition 객체
const client = new AWS.Rekognition();

const params = {
  "Image": {
      "S3Object": {
          "Bucket": bucketName,
          "Name": fileName
      }
  },
  "MaxLabels": 10,
  "MinConfidence": 75
}

// 이미지 분석하기
client.detectLabels(params, function(err, response) {
  if (err) {
    console.log(err, err.stack); // an error occurred
  } else {
    console.log(`Detected labels for: ${photo}`)
    response.Labels.forEach(label => {
      console.log(`Label:      ${label.Name}`)
      console.log(`Confidence: ${label.Confidence}`)
      console.log("Instances:")
      label.Instances.forEach(instance => {
        let box = instance.BoundingBox
        console.log("  Bounding box:")
        console.log(`    Top:        ${box.Top}`)
        console.log(`    Left:       ${box.Left}`)
        console.log(`    Width:      ${box.Width}`)
        console.log(`    Height:     ${box.Height}`)
        console.log(`  Confidence: ${instance.Confidence}`)
      })
      console.log("Parents:")
      label.Parents.forEach(parent => {
        console.log(`  ${parent.Name}`)
      })
      console.log("------------")
      console.log("")
    }) // for response.labels
  } // if
});


var indexRouter = require('./routes/index');
var usersRouter = require('./routes/users');
// image업로드 시 해당 route기능 사용

var app = express();

// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'ejs');

app.use(logger('dev'));
app.use(express.json());
app.use(express.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));

app.use('/', indexRouter);
app.use('/users', usersRouter);

// catch 404 and forward to error handler
app.use(function(req, res, next) {
  next(createError(404));
});

// error handler
app.use(function(err, req, res, next) {
  // set locals, only providing error in development
  res.locals.message = err.message;
  res.locals.error = req.app.get('env') === 'development' ? err : {};

  // render the error page
  res.status(err.status || 500);
  res.render('error');
});

module.exports = app;