// mongo
package main

import (
	"fmt"
	"time"

	"gopkg.in/mgo.v2"
	//	"gopkg.in/mgo.v2/bson"
)

type Mongo struct {
	mdb   *mgo.Session
	ll    *mgo.Collection
	count int
}

// MongoLogin structure
type MongoLogin struct {
	ID       string    `json:"_id" bson:"_id" gorethink:"id"`
	User     string    `json:"user" bson:"user" gorethink:"user"`
	Protocol string    `json:"protocol" bson:"protocol" gorethink:"protocol"`
	IP       string    `json:"ip" bson:"ip" gorethink:"ip"`
	Date     time.Time `json:"date" bson:"date" gorethink:"date"`
	Insert   time.Time `json:"insert" bson:"insert" gorethink:"insert"`
}

func NewMongoDB(uri string, db string) (*Mongo, error) {
	var err error
	mdb, err := mgo.Dial(uri)
	if err != nil {
		return &Mongo{}, err
	}

	ll := mdb.DB(db).C(fmt.Sprintf("lastlogin_%s", opts.Month))

	return &Mongo{
		mdb:   mdb,
		ll:    ll,
		count: 0,
	}, nil
}

func (m *Mongo) Find(limit int) []MongoLogin {
	q := m.ll.Find(nil).Sort("$natural").Skip(m.count).Limit(limit)
	iter := q.Iter()
	defer iter.Close()

	var retval []MongoLogin
	iter.All(&retval)

	m.count += limit

	return retval
}

func (m *Mongo) Close() {
	m.mdb.Close()
}