package main

import (
	"errors"
	"log"
	"strings"
	"time"
)

func setClientBusy(userID64 int64, from time.Time, duration time.Duration) error {
	if from.UTC().Add(duration).After(time.Now().UTC()) {
		if clt, ok := getLockedClient(userID64, false); ok {
			clt.CWIdle = false
			clt.CWBusyUntil = from.UTC().Add(duration)
			clt.Mux.Unlock()
			return nil
		} else {
			return errors.New("Client not found.")
		}
	}
	return nil
}

func setClientIdle(userID64 int64, from time.Time) error {
	if clt, ok := getLockedClient(userID64, false); ok {
		if from.UTC().After(clt.CWLastUpdate.UTC()) {
			clt.CWBusyUntil = from
			clt.CWIdle = true
			clt.CWLastUpdate = from
		}
		clt.Mux.Unlock()
		return nil
	} else {
		return errors.New("Client not found.")
	}
}

func getLockedIdleClient() (*ChirpClient, error) {
	fmt.Printf("getLockedIdleClient : starting.\n")
	muxClients.RLock()
	ids := make([]int64, 0)
	for _, c := range clients {
		if c.CWIdle {
			ids = append(ids, c.TGUserID64)
			fmt.Printf("getLockedIdleClient : appending %s (%d).\n", c.Login, c.TGUserID64)
		}
	}
	muxClients.RUnlock()
	if len(ids) == 0 {
		return nil, errors.New("No idle client.")
	}

	RndMux.Lock()
	id := RndSrc.Intn(len(ids))
	fmt.Printf("getLockedIdleClient : pulled (%d).\n", id)
	RndMux.Unlock()

	clients[ids[id]].Mux.Lock()

	return clients[ids[id]], nil

}

func getLockedClient(id int64, createMissing bool) (*ChirpClient, bool) {
	muxClients.RLock()
	if c, ok := clients[id]; ok {
		c.Mux.Lock()
		muxClients.RUnlock()
		return c, true
	} else if createMissing {
		c := new(ChirpClient)
		c.TGUserID64 = id
		c.Active = false
		c.Mux.Lock()
		muxClients.RUnlock()
		muxClients.Lock()
		clients[id] = c
		muxClients.Unlock()
		return c, true
	} else {
		muxClients.RUnlock()
		//c := new(ChirpClient)
		//return c, false
		return nil, false
	}
}

func clientDelCWMsg(userID64 int64, fromMsgID64 int64, fromChatID64 int64) {
	c := TGCommand{
		Type:         commandDeleteMsg,
		FromUserID64: userID64,
		FromMsgID64:  fromMsgID64,
		FromChatID64: fromChatID64,
	}
	MQTGCmdQueue <- c
}

func clientFwdCWMsg(userID64 int64, fromMsgID64 int64, fromChatID64 int64, toChatID64 int64) {
	c := TGCommand{
		Type:         commandForwardMsg,
		FromUserID64: userID64,
		FromMsgID64:  fromMsgID64,
		FromChatID64: fromChatID64,
		ToChatID64:   toChatID64,
	}
	MQTGCmdQueue <- c

}

func clientSendCWMsg(userID64 int64, s string) {
	clientSendCWMsgDelay(userID64, s, 0)
}

func clientSendCWMsgDelay(userID64 int64, s string, d time.Duration) {
	c := TGCommand{
		Type:         commandSendMsg,
		Text:         s,
		FromUserID64: userID64,
		ToChatID64:   userID64ChtWrsBot,
		Delay:        d,
	}
	MQTGCmdQueue <- c
}

func clientRefreshCWMsg(userID64 int64, chatID64 int64, msgID64 int64) {
	c := TGCommand{
		Type:         commandRefreshMsg,
		FromUserID64: userID64,
		FromChatID64: chatID64,
		FromMsgID64:  msgID64,
		Delay:        0,
	}
	MQTGCmdQueue <- c
}

func clientMsgMeAck(m *ChatWarsMessageMeAck) {
	if clt, ok := getLockedClient(m.Msg.TGUserID64, false); ok {
		if clt.Active {
			if clt.CWLastUpdate.Before(m.Msg.Date) {
				clt.CWGuildID64 = m.CWGuildID64
				clt.CWUserID64 = m.CWUserID64
				clt.CWState = m.State
				clt.CWLastUpdate = m.Msg.Date
				if getObjGuildID(``) != m.CWGuildID64 && strings.Compare(clt.CWRole, ``) == 0 {
					clientSendCWMsg(m.Msg.TGUserID64, "/g_roles")
				}
			}
		}
		clt.Mux.Unlock()
	}
}

func clientMsgGoQuestAck(m *ChatWarsMessageGoQuestAck) {
	if clt, ok := getLockedClient(m.Msg.TGUserID64, false); ok {
		if clt.Active {
			if clt.CWLastUpdate.Before(m.Msg.Date) {
				clt.CWLastUpdate = m.Msg.Date
				clt.CWBusyUntil = m.Msg.Date.Add(m.Duration)
			}
		}
		clt.Mux.Unlock()
	}
}

func clientMsgGRolesAck(m *ChatWarsMessageGRolesAck) {
	if clt, ok := getLockedClient(m.Msg.TGUserID64, false); ok {
		if clt.Active {
			if clt.CWLastUpdate.Before(m.Msg.Date) {
				if m.CommanderID64 == clt.CWUserID64 {
					clt.CWRole = `commander`
				} else if m.BartenderID64 == clt.CWUserID64 {
					clt.CWRole = `bartender`
				} else if m.SquireID64 == clt.CWUserID64 {
					clt.CWRole = `squire`
				} else if m.TreasurerID64 == clt.CWUserID64 {
					clt.CWRole = `treasurer`
				} else {
					clt.CWRole = `none`
				}
				clt.CWLastUpdate = m.Msg.Date
			}
		}
		clt.Mux.Unlock()
	}
}

func clientGetCWUserID64(tgUserID64 int64) (int64, error) {
	if clt, ok := getLockedClient(tgUserID64, false); ok {
		i := clt.CWUserID64
		clt.Mux.Unlock()
		return i, nil
	}
	return 0, errors.New("Unknown user_id.")
}

func clientSpreadQuestResultAmbush(cwm *ChatWarsMessageQuestResultAmbush) error {
	/*
		muxClients.RLock()
		var ret string
		for id, c := range clients {
			if c.Active {
				ret = fmt.Sprintf("%s%s | UserID : %d | TelegramID : %d (online)\n", ret, c.Login, c.CWUserID64, id)
			} else {
				ret = fmt.Sprintf("%s%s | UserID : %d | TelegramID : %d (offline)\n", ret, c.Login, c.CWUserID64, id)
			}
		}
		muxClients.RUnlock()
	*/
	log.Printf("clientSpreadQuestResultAmbush : spreading.")
	return nil
}