// iterator
package main

import (
	"fmt"
	"log"
	"strconv"
	"time"

	"github.com/garyburd/redigo/redis"
)

type produced struct {
	user   string
	logins []string
}

func producer() {
	conn := dbs.rdb.Get()
	defer conn.Close()

	for loop {

		wg.Wait()
		status = _Producer

		start := time.Now()
		// estrae un userid dalla lista degli utenti che hanno fatto login
		user, err := redis.String(conn.Do("spop", "llindex"))
		//		if opts.Debug {
		//			log.Printf("SPOP: %+v - %+v\n", user, err)
		//			fmt.Printf("SPOP: %+v - %+v\n", user, err)
		//		}
		// se non ci sono piu' userid esce
		if err != nil {
			if opts.Debug {
				fmt.Printf("LLINDEX empty: %v\n", err)
			}
			log.Printf("LLINDEX empty: %v\n", err)
			//loop[id] = false
			//done[id] <- true
			break
		}

		// estrae <MaxLogins> login dell'utente "user"
		logs, err := redis.Strings(conn.Do("lrange", user, "1", strconv.Itoa(opts.MaxLogins)))
		if err != nil {
			if opts.Debug {
				fmt.Printf("LRANGE: %+v - %+v\n", err, logs)
			}
			log.Printf("LRANGE: %+v - %+v\n", err, logs)
		}
		//		if opts.Debug {
		//			fmt.Printf("LRANGE: %s - %d\n", user, len(logs))
		//			log.Printf("LRANGE: %s - %d\n", user, len(logs))
		//		}

		if opts.Debug {
			fmt.Printf("PROD: user=%s login=%d in %v - conn=%d\n", user, len(logs), time.Since(start), dbs.rdb.ActiveCount())
			//			log.Printf("PROD (%d): user=%s login=%d in %v - conn=%d\n", id, user, len(logs), time.Since(start), dbs.rdb.ActiveCount())
		}

		count.AddUser()
		wg.Add(1)
		count.AddWG()

		consume <- produced{
			user:   user,
			logins: logs,
		}
	}

	done <- true
}