package user

import (
	"encoding/json"
	"fmt"
	"os"
	"path"
	"strings"
	"time"

	"sirlab.de/go/knowyt/fileutil"
)

func NewUserFromFile(fileName string) (*User, error) {
	jsonBytes, err := os.ReadFile(fileName)
	if err != nil {
		return nil, err
	}

	// var usr User
	var userJson UserJson
	if err := json.Unmarshal(jsonBytes, &userJson); err != nil {
		return nil, fmt.Errorf("%s: %v", fileName, err)
	} else {
		_, fileNameShort := path.Split(fileName)
		id := strings.TrimSuffix(fileNameShort, ".json")
		return &User{
			id:           id,
			name:         userJson.Name,
			filename:     fileName,
			role:         userJson.Role,
			authcode:     userJson.Authcode,
			gameId:       userJson.GameId,
			lastLoggedIn: userJson.LastLoggedIn,
			created:      userJson.Created,
		}, nil
	}
}

func CreateUser(fileName, gameId string) *User {
	_, fileNameShort := path.Split(fileName)
	id := strings.TrimSuffix(fileNameShort, ".json")
	return &User{
		id:           id,
		filename:     fileName,
		gameId:       gameId,
		lastLoggedIn: 0,
		created:      time.Now().Unix(),
	}
}

func (usr *User) DeepCloneUserObj() *User {
	usr.mu.Lock()
	defer usr.mu.Unlock()

	usrNew := User{
		id:           usr.id,
		filename:     usr.filename,
		authcode:     usr.authcode,
		name:         usr.name,
		role:         usr.role,
		gameId:       usr.gameId,
		created:      usr.created,
		lastLoggedIn: usr.lastLoggedIn,
		cameo:        usr.cameo,
	}
	return &usrNew
}

func (usr *User) SaveUser() error {
	usr.mu.Lock()
	defer usr.mu.Unlock()

	userJson := UserJson{
		Name:         usr.name,
		Authcode:     usr.authcode,
		Role:         usr.role,
		GameId:       usr.gameId,
		Created:      usr.created,
		LastLoggedIn: usr.lastLoggedIn,
	}
	if jsonBytes, err := json.Marshal(userJson); err != nil {
		return err
	} else {
		if err := fileutil.SaveFile(usr.filename, jsonBytes); err != nil {
			return err
		}
	}
	return nil
}

func (usr *User) RemovePlayer() error {
	return os.Remove(usr.filename)
}

func (usr *User) GetId() string {
	usr.mu.Lock()
	defer usr.mu.Unlock()

	return usr.id
}

func (usr *User) GetAuthCode() string {
	usr.mu.Lock()
	defer usr.mu.Unlock()

	return usr.authcode
}

func (usr *User) SetAuthcode(authcode string) {
	usr.mu.Lock()
	defer usr.mu.Unlock()

	usr.authcode = authcode
}

func (usr *User) GetName() string {
	usr.mu.Lock()
	defer usr.mu.Unlock()

	return usr.name
}

func (usr *User) SetName(name string) {
	usr.mu.Lock()
	defer usr.mu.Unlock()

	usr.name = name
}

func (usr *User) GetRole() string {
	usr.mu.Lock()
	defer usr.mu.Unlock()

	return usr.role
}

func (usr *User) SetRole(role string) {
	usr.mu.Lock()
	defer usr.mu.Unlock()

	usr.role = role
}

func (usr *User) GetGameId() string {
	usr.mu.Lock()
	defer usr.mu.Unlock()

	return usr.gameId
}

func (usr *User) IsPlayer() bool {
	return true
}

func (usr *User) IsGamemaster() bool {
	usr.mu.Lock()
	defer usr.mu.Unlock()

	return usr.role == ROLE_GAMEMASTER || usr.role == ROLE_ADMIN
}

func (usr *User) IsAdmin() bool {
	usr.mu.Lock()
	defer usr.mu.Unlock()

	return usr.role == ROLE_ADMIN
}

func (usr *User) IsAdminOrCameo() bool {
	usr.mu.Lock()
	defer usr.mu.Unlock()

	if usr.role == ROLE_ADMIN {
		return true
	}

	if usr.cameo != nil {
		if usr.cameo.role == ROLE_ADMIN {
			return true
		}
	}

	return false
}

func (usr *User) SetCameo(usrCameo *User) {
	usr.mu.Lock()
	defer usr.mu.Unlock()

	usr.cameo = usrCameo
}

func (usr *User) GetCameo() *User {
	usr.mu.Lock()
	defer usr.mu.Unlock()

	return usr.cameo
}

func (usr *User) GetCreated() int64 {
	return usr.created
}

func (usr *User) GetLastLoggedIn() int64 {
	return usr.lastLoggedIn
}

func (usr *User) UpdateHeartbeat() {
	usr.lastLoggedIn = time.Now().Unix()
}