package main

import (
	"fmt"
	"time"
)

type saveData struct {
	Room   string
	From   string
	Rid    int64
	Amount int64
	Now    int64
}

type saveLog struct {
	Rid int64
	Now int64
	Mes string
}

type DonatorCache struct {
	Id   int64
	Last int64
}

func getDonId(name string) int64 {
	var id int64
	err := Mysql.Get(&id, "SELECT id FROM donator WHERE name=?", name)
	if err != nil {
		res, _ := Mysql.Exec("INSERT INTO donator (`name`) VALUES (?)", name)
		id, _ = res.LastInsertId()
	}
	return id
}

func getRoomInfo(name string) (int64, bool) {
	var id int64
	result := true
	err := Mysql.Get(&id, "SELECT id FROM room WHERE name=?", name)
	if err != nil {
		result = false
	}
	return id, result
}

func getSumTokens() int64 {
	r := struct {
		Date string
		Sum  int64
	}{}
	err := Clickhouse.Get(&r, "SELECT toStartOfHour(toDateTime(`unix`)) as date, SUM(`token`) as sum FROM `stat` WHERE time = today() GROUP BY date ORDER BY date DESC LIMIT 1")
	if err == nil && r.Sum > 0 {
		return r.Sum
	}
	return 0
}

func saveDB() {
	hours, _, _ := time.Now().Clock()

	bulk := []saveData{}
	update := []struct {
		Rid int64
		Now int64
	}{}

	data := make(map[string]*DonatorCache)
	index := make(map[string]int64)

	ticker := time.NewTicker(10 * time.Second)
	defer ticker.Stop()

	cleanCache := time.NewTicker(12 * time.Hour)
	defer cleanCache.Stop()

	index = map[string]int64{"hours": int64(hours), "tokens": getSumTokens(), "last": time.Now().Unix()}

	for {
		select {
		case <-cleanCache.C:
			l := len(data)
			now := time.Now().Unix()
			for k, v := range data {
				if now > v.Last+60*60*48 {
					delete(data, k)
				}
			}
			fmt.Println("Clean map:", l, "=>", len(data))
		case <-ticker.C:
			if len(bulk) > 0 {
				tx, err := Mysql.Begin()
				if err == nil {
					st, _ := tx.Prepare("INSERT INTO `stat` (`did`, `rid`, `token`, `time`) VALUES (?, ?, ?, ?)")
					for _, v := range bulk {
						st.Exec(data[v.From].Id, v.Rid, v.Amount, v.Now)
					}
					tx.Commit()
					st.Close()
				}

				tx, err = Mysql.Begin()
				if err == nil {
					st, _ := tx.Prepare("UPDATE `room` SET `last` = ? WHERE `id` = ?")
					for _, v := range update {
						st.Exec(v.Now, v.Rid)
					}
					tx.Commit()
					st.Close()
				}

				tx, err = Clickhouse.Begin()
				if err == nil {
					st, _ := tx.Prepare("INSERT INTO stat VALUES (?, ?, ?, ?, ?)")
					for _, v := range bulk {
						st.Exec(uint32(data[v.From].Id), uint32(v.Rid), uint32(v.Amount), time.Unix(v.Now, 0), uint32(v.Now))
					}
					tx.Commit()
					st.Close()
				}

				bulk = nil
				update = nil
			}
		case m := <-save:
			//fmt.Println("Save channel:", len(save), cap(save))

			now := time.Now().Unix()

			if _, ok := data[m.From]; ok {
				data[m.From].Last = now
			} else {
				data[m.From] = &DonatorCache{Id: getDonId(m.From), Last: now}
			}

			bulk = append(bulk, m)
			update = append(update, struct {
				Rid int64
				Now int64
			}{
				Rid: m.Rid,
				Now: m.Now,
			})

			if m.Amount > 49 {
				msg, err := json.Marshal(struct {
					Chanel  string `json:"chanel"`
					Room    string `json:"room"`
					Donator string `json:"donator"`
					Amount  int64  `json:"amount"`
				}{
					Chanel:  "bongacams",
					Room:    m.Room,
					Donator: m.From,
					Amount:  m.Amount,
				})
				if err == nil {
					socketServer <- msg
				}
			}

			hours, minutes, seconds := time.Now().Clock()
			if int64(hours) == index["hours"] {
				index["tokens"] += m.Amount
			} else {
				index = map[string]int64{"hours": int64(hours), "tokens": 0, "last": 0}
			}

			if minutes >= 5 && now > index["last"]+30 {
				seconds += minutes * 60
				msg, err := json.Marshal(struct {
					Chanel string  `json:"chanel"`
					Index  float64 `json:"index"`
				}{
					Chanel: "bongacams",
					Index:  float64(index["tokens"]) / float64(seconds) * 3600 * 0.025 / 1000,
				})
				if err == nil {
					socketServer <- msg
				}
				index["last"] = now
			}
		}
	}
}

func saveLogs() {
	bulk := []saveLog{}
	ticker := time.NewTicker(10 * time.Second)
	defer ticker.Stop()
	for {
		select {
		case <-ticker.C:
			if len(bulk) > 0 {
				tx, err := Mysql.Begin()
				if err == nil {
					st, _ := tx.Prepare("INSERT INTO `logs` (`rid`, `time`, `mes`) VALUES (?, ?, ?)")
					for _, v := range bulk {
						st.Exec(v.Rid, v.Now, v.Mes)
					}
					tx.Commit()
					st.Close()
				}
				bulk = nil
			}
		case m := <-slog:
			if len(m.Mes) > 0 {
				bulk = append(bulk, m)
			}
		}
	}
}