package actions

import (
	"dk/internal/control"
	"dk/internal/towns"
	"dk/internal/users"
	"fmt"
)

type Direction int

const (
	North Direction = iota
	East
	South
	West
)

func (d Direction) String() string {
	switch d {
	case North:
		return "North"
	case East:
		return "East"
	case South:
		return "South"
	case West:
		return "West"
	default:
		return "Unknown"
	}
}

func Move(user *users.User, dir Direction) (string, int, int, error) {
	control, err := control.Get()
	if err != nil {
		panic("Move: CONTROL ROW SHOULD EXIST")
	}

	newX, newY := user.X, user.Y
	switch dir {
	case North:
		newY++
	case East:
		newX++
	case South:
		newY--
	case West:
		newX--
	}

	if !control.IsWithinWorldBounds(newX, newY) {
		return user.Currently, user.X, user.Y, fmt.Errorf("You've hit the edge of the world.")
	}

	if towns.ExistsAt(newX, newY) {
		return "In Town", newX, newY, nil
	}

	return "Exploring", newX, newY, nil
}