package helpers

import (
	"mazeratsgen/internal/dice"
	"path"
	"runtime"
)

func LocalFile(filepath string) string {
	_, thisFile, _, _ := runtime.Caller(1)
	return path.Join(path.Dir(thisFile), filepath)
}

type genFunc func([2]int) string

func GenUniqueItems(total int, fn genFunc, seed int64) []string {
	roller := dice.NewRoller(seed)
	items := []string{}

	// Generate initial items
	for i := 0; i < total; i++ {
		items = append(items, fn(roller.TableRoll()))
	}

	// Walk items and check if they match any other item. If they do then replace
	// it with a fresh item. This doesn't guarantee unique items, but prevents
	// Denial of Service attacks (a bit) by only doing 5 passes.
	passes := 5
	for p := 0; p <= passes; p++ {
		for i, _ := range items {
			for x := 0; x < len(items); x++ {
				if x == i {
					break
				}
				if items[x] == items[i] {
					items[i] = fn(roller.TableRoll())
					break
				}
			}
		}
	}
	return items
}