package words

import (
	_ "embed"
	"strings"
	"tildegit.org/jakew/wordle/game/util"
	"time"
)

//go:embed words.txt
var words string

//go:embed dictionary.txt
var dictionary string

func GetSolution() (string, int) {
	wordSlice := strings.Split(words, "\n")
	today := time.Now().In(time.UTC).Truncate(24 * time.Hour)
	day := (today.UnixMilli() - 1624057200000) / 864e5
	index := day % int64(len(wordSlice))
	return strings.ToLower(strings.TrimSpace(wordSlice[index])), int(day)
}

func contains(words string, word string) bool {
	slice := strings.Split(words, "\n")
	for _, item := range slice {
		if item != "" && item == word {
			return true
		}
	}
	return false
}

func IsValid(word string) bool {
	word = strings.TrimSpace(strings.ToLower(word))
	if len(word) != 5 {
		return false
	}
	return contains(words, word) || contains(dictionary, word)
}

func Check(word string, solution string) (correct, present []int) {
	correct = []int{}
	present = []int{}
	exclude := []int{}
	word = strings.TrimSpace(strings.ToLower(word))

	for i, letter := range word {
		// check if correct position
		if letter == int32(solution[i]) {
			correct = append(correct, i)
			continue
		}

		// is the letter in the word
		for j, letter1 := range solution {
			if letter == letter1 && !util.ContainsInt(exclude, j) {
				present = append(present, i)
				exclude = append(exclude, j)
				break
			}
		}
	}

	return
}