var router = require('express').Router(),
    mongoose = require('mongoose'),
    Aeronef = mongoose.model('Aeronef'),
    Jump = mongoose.model('Jump'),
    User = mongoose.model('User');
const auth = require('../auth');


router.get('/', auth.required, function (req, res, next) {
    var limit = 25;
    var offset = 0;
    if (typeof req.query.limit !== 'undefined') {
        limit = req.query.limit;
    }
    if (typeof req.query.offset !== 'undefined') {
        offset = req.query.offset;
    }
    
    User.findById(req.payload.id).then(function (user) {
        if (!user) {
            return res.sendStatus(401);
        }
        var query = [
            {
                '$match': {
                    '$expr': {
                        '$eq': [ '$author' , { '$toObjectId': user._id.toString() } ]
                    }
                }
            }, {
                '$group': {
                    '_id': {
                        'aeronef': '$aeronef',
                        'imat': '$imat'
                    }, 
                    'count': {
                        '$sum': 1
                    }
                }
            }, {
                '$sort':
                {
                    '_id': 1
                },
            }
        ];
        Promise.all([
            Jump.aggregate(query)
            .limit(Number(limit))
            .skip(Number(offset))
            .exec()
            //Aeronef.count(query)
        ]).then(function (results) {
            var aeronefs = results[0];
            //var aeronefsCount = results[1];
            return res.json({
                aeronefs: aeronefs,
                aeronefsCount: aeronefs.length
            });
            /*
            return res.json({
                aeronefs: aeronefs.map(function (aeronef) {
                    return aeronef.toJSONFor(user);
                }),
                aeronefsCount: aeronefsCount
            });
            */
        }).catch(next);
    }).catch(next);
});

router.get('/allByDate', auth.required, function (req, res, next) {
    User.findById(req.payload.id).then(function (user) {
        if (!user) {
            return res.sendStatus(401);
        }
        var limit = 50;
        var offset = 0;
        if (typeof req.query.limit !== 'undefined') {
            limit = req.query.limit;
        }
        if (typeof req.query.offset !== 'undefined') {
            offset = req.query.offset;
        }
        var query = [
            {
                '$match': {
                    '$expr': {
                        '$eq': [ '$author' , { '$toObjectId': user._id.toString() } ]
                    }
                }
            }, {
                '$project': {
                    '_id': 0,
                    'aeronef': 1,
                    'imat': 1,
                    'year': {
                        '$year': '$date'
                    }
                }
            }, {
                '$group': {
                    '_id': {
                        'aeronef': '$aeronef',
                        'imat': '$imat',
                        'year': '$year'
                    },
                    'count': {
                        '$sum': 1
                    }
                }
            }, {
                '$sort': {
                    '_id': 1
                }
            }
        ];

        Jump.aggregate(query)
        .limit(Number(limit))
        .skip(Number(offset))
        .exec()
        .then(function (result) {
            var aeronefs = result;
            //console.log(aeronefs);
            return res.json({
                aeronefs: aeronefs,
                aeronefsCount: aeronefs.length
            });
        }).catch(next);
    }).catch(next);
});

module.exports = router;