package game

import (
	"fmt"
)

func (gm *Game) changeGameState(expectedState, newState, newPhase string) error {
	gm.mu.Lock()
	defer gm.mu.Unlock()

	if expectedState != STATE_ANY && gm.state != expectedState {
		return fmt.Errorf("game state \"%s\" != expected state \"%s\"", gm.state, expectedState)
	}
	gm.state = newState
	gm.phase = newPhase

	return nil
}

func (gm *Game) changeGamePhase(expectedState, expectedPhase, newPhase string) error {
	gm.mu.Lock()
	defer gm.mu.Unlock()

	if expectedState != STATE_ANY && gm.state != expectedState {
		return fmt.Errorf("game state \"%s\" != expected state \"%s\"", gm.state, expectedState)
	}
	if gm.phase != expectedPhase {
		return fmt.Errorf("game phase \"%s\" != expected phase \"%s\"", gm.phase, expectedPhase)
	}
	gm.phase = newPhase

	return nil
}