package game

import (
	"encoding/json"
	"fmt"
	"os"
	"sirlab.de/go/knowyt/engine"
	"sirlab.de/go/knowyt/quote"
)

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

	var gmJson GameJson
	if err := json.Unmarshal(jsonBytes, &gmJson); err != nil {
		return nil, fmt.Errorf("%s: %v\n", fileName, err)
	} else {
		gm := Game{
			id:       id,
			filename: fileName,
			name:     gmJson.Name,
			eng:      engine.NewEngine(),
			players:  make(map[string]playerInfo, 0),
			state:    STATE_IDLE,
			quotes:   make(map[string]*quote.Quote, 0),
		}

		return &gm, nil
	}
}

func NewGame(id, fileName, name string) (*Game, error) {
	gm := Game{
		id:       id,
		filename: fileName,
		name:     name,
		eng:      engine.NewEngine(),
		players:  make(map[string]playerInfo, 0),
		state:    STATE_IDLE,
		quotes:   make(map[string]*quote.Quote, 0),
	}

	return &gm, nil
}

func (gm *Game) SaveGame() error {
	gm.mu.Lock()
	defer gm.mu.Unlock()

	gmJson := GameJson{
		Name: gm.name,
	}
	if jsonBytes, err := json.Marshal(gmJson); err != nil {
		return err
	} else {
		if err := os.WriteFile(gm.filename, jsonBytes, 0666); err != nil {
			return err
		}
	}
	return nil
}

func (gm *Game) StartEngine() {
	gm.eng.Run(gm.populateSyncDataCb)
}

func (gm *Game) GetId() string {
	gm.mu.Lock()
	defer gm.mu.Unlock()

	return gm.id
}

func (gm *Game) GetState() (string, string) {
	gm.mu.Lock()
	defer gm.mu.Unlock()

	return gm.state, gm.phase
}

func (gm *Game) GetName() string {
	gm.mu.Lock()
	defer gm.mu.Unlock()

	return gm.name
}

func (gm *Game) GetEngine() *engine.Engine {
	gm.mu.Lock()
	defer gm.mu.Unlock()

	return gm.eng
}