package coordinator

import (
	"fmt"
	"time"

	"git.saintnet.tech/stryan/snengame/internal/game"
	"github.com/google/uuid"
)

type SessionCmd string
type SessionResp string

const (
	SessionCmdQuery SessionCmd = "query"
	SessionCmdJoin             = "join"
	SessionCmdLeave            = "leave"
	SessionCmdPlay             = "play"
	SessionCmdPoll             = "poll"
)

const (
	SessionRespFound             SessionResp = "found"
	SessionRespJoined1                       = "joined p1"
	SessionRespJoined2                       = "joined p2"
	SessionRespJoinError                     = "join error"
	SessionRespLeft                          = "left"
	SessionRespPlayed                        = "played"
	SessionRespError                         = "generic error"
	SessionRespBroadcastSenTurn              = "Sentinal turn"
	SessionRespBroadcastScoTrun              = "Scourge turn"
	SessionRespBroadcastSenWin               = "Sentinal wins"
	SessionRespBroadcastScoWin               = "Scourge wins"
	SessionRespBroadcastUpdate               = "update"
	SessionRespBroadcastSenJoin              = "Sentinal joined"
	SessionRespBroadcastScoJoin              = "Scourge joined"
	SessionRespBroadcastSenReady             = "Sentinal player is ready"
	SessionRespBroadcastScoReady             = "Scourge player is ready"
	SessionRespBroadcastSenLeft              = "Sentinal player has left"
	SessionRespBroadcastScoLeft              = "Scourge player has left"
	SessionRespBroadcastNone                 = ""
)

type Session struct {
	ID         uuid.UUID
	p1         uuid.UUID
	p2         uuid.UUID
	pMap       map[uuid.UUID]int
	Active     bool
	Game       *game.Game
	Watcher    chan bool
	Broadcasts map[uuid.UUID]chan SessionResp
	LastMove   time.Time
}

func NewSession() *Session {
	return &Session{
		ID:         uuid.New(),
		p1:         uuid.Nil,
		p2:         uuid.Nil,
		pMap:       make(map[uuid.UUID]int),
		Active:     false,
		Game:       nil,
		Watcher:    make(chan bool),
		Broadcasts: make(map[uuid.UUID]chan SessionResp),
		LastMove:   time.Now(),
	}
}

func (s *Session) Join(id uuid.UUID) SessionResp {
	if s.p1 == uuid.Nil {
		s.p1 = id
		s.pMap[id] = game.SentinalID
		for _, v := range s.Broadcasts {
			v <- SessionRespBroadcastSenJoin
		}
		return SessionRespJoined1
	} else if s.p2 == uuid.Nil {
		s.p2 = id
		s.pMap[id] = game.ScourgeID
		for _, v := range s.Broadcasts {
			v <- SessionRespBroadcastScoJoin
		}
		return SessionRespJoined2
	} else {
		return SessionRespJoinError
	}
}

func (s *Session) Leave(id uuid.UUID) {
	if id == s.p1 {
		s.p1 = uuid.Nil
	} else if id == s.p2 {
		s.p2 = uuid.Nil
	}
	delete(s.Broadcasts, id)
	if s.p1 == uuid.Nil && s.p2 == uuid.Nil {
		s.Game = nil
	} else if s.Game.Status != game.StatusDraw || s.Game.Status != game.StatusScourgeWin || s.Game.Status != game.StatusSentinalWin {
		s.Game.Status = game.StatusStop
	}
}

func (s *Session) Play(id uuid.UUID, cmd *game.Command) *game.CommandResult {
	if s.pMap[id] != cmd.PlayerID {
		return nil
	}
	if cmd.Type != SessionCmdPoll {
		s.LastMove = time.Now()
	}
	res := s.Game.Parse(cmd)
	return res
}

func (s *Session) PlayerIn(id uuid.UUID) bool {
	_, exists := s.pMap[id]
	return exists
}

type SessionCommand struct {
	ID          uuid.UUID     `json:"player_id"`
	MatchID     uuid.UUID     `json:"match_id"`
	Command     SessionCmd    `json:"command"`
	GameCommand *game.Command `json:"game_command,omitempty"`
}

func (s *SessionCommand) String() string {
	return fmt.Sprintf("%v %v %v\n", s.ID, s.Command, s.GameCommand)
}

type SessionCommandResult struct {
	ID         uuid.UUID           `json:"player_id"`
	MatchID    uuid.UUID           `json:"match_id"`
	Result     SessionResp         `json:"result"`
	GameResult *game.CommandResult `json:"game_result,omitempty"`
}

func (s *SessionCommandResult) String() string {
	return fmt.Sprintf("%v %v %v\n", s.ID, s.Result, s.GameResult)
}