// aggregate
package main

import (
	"fmt"
	"log"
	//	"sort"
	"time"

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

func consolidate(ys time.Time, ye time.Time) {

	limit := 10000

	pre := dbs.mdbDst.DB("dovecot").C("pre_lastlogin_day")

	query := pre.Find(bson.M{})

	if opts.Debug {
		tot, _ := query.Count()
		fmt.Printf("Users: %d\n", tot)
	}

	query.Batch(limit)
	iter := query.Iter()

	if opts.Bulk {
		dbs.bulk = dbs.lc.Bulk()
		dbs.bulk.Unordered()
	}

	result := Users{}

	for iter.Next(&result) {
		idb.CountTOT += 1
		ll := LastLoginDay{}
		ll.User = result.User
		ll.Date = ys

		// DEBUG

		logins := result.Logins

		ips := []IPs{}
		lastip := IPs{}
		for l := range logins {
			if logins[l].IP == lastip.IP && logins[l].Date.Sub(lastip.Date) < opts.Interval {
				/*
					if opts.Debug {
						fmt.Println("IPs: ", logins[l].IP, logins[l].Date, logins[l].Date.Sub(lastip.Date))
					}
				*/
			} else {
				ips = append(ips, IPs{IP: logins[l].IP, Date: logins[l].Date, Protocol: logins[l].Protocol})
				lastip.Date = logins[l].Date
				lastip.IP = logins[l].IP
			}
			switch logins[l].Protocol {
			case "pop3", "pop":
				ll.Protocols.Pop += 1
			case "imap":
				ll.Protocols.Imap += 1
			case "web":
				ll.Protocols.Web += 1
			}
		}
		ll.IPs = ips

		/*
			if opts.Debug {
				fmt.Printf("Insert %+v\n\r", ll)
			}
		*/

		iStart := time.Now()

		if opts.Bulk {
			//dbs.bulk.Upsert(Index{User: ll.User, Date: ll.Date}, ll)
			dbs.bulk.Insert(ll)
		} else {
			info, err := dbs.lc.Upsert(Index{User: ll.User, Date: ll.Date}, ll)
			if err != nil {
				log.Println("Insert error: ", err)
				continue
			}
			fmt.Printf("Change: %+v\n", info)
		}
		idb.Insert += time.Since(iStart)

		idb.CountOK += 1
	}

	if opts.Bulk {
		res, err := dbs.bulk.Run()
		if err != nil {
			log.Println("Insert error: ", err)
		}
		fmt.Printf("Bulk res: %+v\n", res)
	}

	if opts.Debug {
		fmt.Printf("Insert: %d\n", idb.CountOK)
	}

	pre.DropCollection()
}

func aggregate(ys time.Time, ye time.Time) {

	qStart := time.Now()

	p := dbs.ll.Pipe([]bson.M{
		{"$match": bson.M{"date": bson.M{"$gte": ys, "$lte": ye}}},
		{"$group": bson.M{"_id": "$user"}},
		{"$project": bson.M{"user": "$_id"}}})

	/*
		p := dbs.ll.Pipe([]bson.M{
			{"$match": bson.M{"date": bson.M{"$gte": ys, "$lte": ye}}},
			//		{"$sort": bson.M{"user": -1, "date": 1}},
			{"$group": bson.M{"_id": "$user",
				"logins": bson.M{"$push": bson.M{"protocol": "$protocol", "date": "$date", "ip": "$ip"}}}}})
		//		{"$sort": bson.M{"_id": -1}},
		//		{"$project": bson.M{"user": "$_id", "_id": 0, "logins": 1}},
		//		{"$out": "pre_lastlogin_day"}})
	*/

	idb.Pipe = idb.Pipe + time.Since(qStart)
	if opts.Debug {
		res := new(interface{})
		err := p.Explain(res)
		fmt.Printf("Pipe: %+v\nErr: %+v\n", *res, err)
		res = new(interface{})
		err = p.One(res)
		fmt.Printf("user: %+v\nErr: %+v\n", *res, err)
		fmt.Printf("Aggregate user: %s\n\r", time.Since(qStart))
	}

	consolidate(ys, ye)

	fmt.Printf("Date: %s - %s\n", ys, ye)
	log.Printf("Date: %s - %s\n", ys, ye)
}