const fs = require('fs');
const Details = require('../models/detail');
const Messages = require('../models/message');
const Mongoose = require('mongoose');  
const ShortId = require('shortid');

const ATTACHMENT_STORE = '../images';
const ATTACHMENT_STORE_PROFILE = '/profile';
const ATTACHMENT_STORE_MESSAGE = '/message';
const ATTACHMENT_SUFFIX_DETAIL = '_detail';
const ATTACHMENT_SUFFIX_THUMBNAIL = '_thumbnail';
 
const ProfileSchema = new Mongoose.Schema({
  "order" : { type: Number, default: 0 },
  "details": { type: Details.schema },
  "messages" : [ { type: Messages.schema } ]
});

const ProfileModel = Mongoose.model('profiles', ProfileSchema);

module.exports = {  
  
  all: (e) => {
		const promise = new Promise((resolve, reject) => {
			ProfileModel
				.find({})
				.sort({ order: 1 })
        .populate({
          path: 'details'
        })
        .populate({
          path: 'messages',
          select: 'order text image isUser',
          options: { sort: { order: 1 } }
        })
        .exec((err, result) => {
          if (err) {
            reject(err);
          }

          if (result) {
            resolve(result);
          }
        });
		});

		promise.then((result) => {
			e.emit('all', null, result);
		})
		.catch((err) => {
			e.emit('all', err, null);
		});
  },

	create: (e, profiles) => {
	  var count = profiles.length;
    var errors = [];
    var results = [];
		const promise = new Promise((resolve, reject) => {  
      for (let i = 0; i < profiles.length; i++) {
        var profile = profiles[i];
        var profileInstance = new ProfileModel(profile);

        profileInstance.save((err, result) => {
          if (err) {
            count -= 1;
            errors.push({
              profile: profile,
              error: err
            });
            if (count === 0) {
              reject({ results: results, errors: errors });
            }
          }

          if (result) {
            count -= 1;
            results.push(result);
            if (count === 0) {
              resolve({ results: results, errors: errors });
            }
          }
        });
      
      }

		});

		promise.then((result) => {
			e.emit('create', null, result);
		})
		.catch((err) => {
			e.emit('create', err, null);
		});
	},
	
	delete: (e, id) => {
		const promise = new Promise((resolve, reject) => {
			ProfileModel.remove({ _id: id }, (err, result) => {
				if (err) {
					reject(err);
				}

				if (result) {
					resolve(result);
				}
			});
		});

		promise.then((result) => {
			e.emit('delete', null, result);
		})
		.catch((err) => {
			e.emit('delete', err, null);
		});
	},

	find: (e, find) => {
		const promise = new Promise((resolve, reject) => {  
			var query = ProfileModel.find(find);
			
			if (!find.select.length || (find.select.length && find.length.indexOf('details'))) {
        query.populate({
          path: 'details'
        });
			}

			if (!find.select.length || (find.select.length && find.length.indexOf('messages'))) {
        query.populate({
          path: 'messages',
          select: 'order text image isUser',
          options: { sort: { order: 1 } }
        });
      }
      
      query.exec((err, results) => {
        if (err) {
          reject(err);
        }

        if (results) {
          resolve(results);
        }
      });
		});

		promise.then((result) => {
			e.emit('find', null, result);
		})
		.catch((err) => {
			e.emit('find', err, null);
		});
	},
		
	get: (e, id) => {
		const promise = new Promise((resolve, reject) => {  
			ProfileModel.find({ _id: id }, (err, result) => {
        if (err) {
          reject(err);
        }

        if (result) {
          resolve(result);
        }
      });
		});

		promise.then((result) => {
			e.emit('get', null, result);
		})
		.catch((err) => {
			e.emit('get', err, null);
		});
	},

	update: (e, id, profile) => {
		const promise = new Promise((resolve, reject) => {
			ProfileModel.findByIdAndUpdate(id, { $set: profile }, { new: true }, (err, result) => {
				if (err) {
					reject(err);
				}

				if (result) {
					resolve(result);
				}
			});
		});

		promise.then((result) => {
			e.emit('update', null, result);
		})
		.catch((err) => {
			e.emit('update', err, null);
		});
	},
	
	updateMessage: (e, profileId, messageId, data) => {}
};