package q05

import (
	_ "embed"
	"fmt"
	"strconv"
	"strings"
	"text/template"

	"github.com/hhhapz/codequest/models"
	"github.com/hhhapz/codequest/question"
)

func init() {
	t := template.New("fuel")
	var err error
	t, err = t.Parse(q05Text)
	if err != nil {
		panic(err)
	}
	question.Register(
		&question.Question{
			ID:    "fuel",
			Name:  "Fuel for the Farlands",
			Text:  t,
			Level: question.Level1,
			Generate: func(u *models.User) string {
				inp := generate(u)
				nums := make([]string, nums)
				for i, num := range inp {
					nums[i] = strconv.Itoa(num)
				}
				return strings.Join(nums, "\n")
			},
			Validate: func(u *models.User, part question.Part, solution string) bool {
				return Validate(u, part, solution)
			},
		})
}

const (
	nums = 350
)

func generate(u *models.User) []int {
	res := make([]int, nums)

	r := question.UserRandom(u)

	for i := 0; i < nums; i++ {
		if nums < 10 {
			res[i] = r.Intn(10000-200) + 200
			continue
		}
		res[i] = r.Intn(1000000-1000) + 1000
	}

	return res
}

func Validate(u *models.User, p question.Part, sol string) bool {
	inp := generate(u)

	var n int
	switch p {
	case question.Part1:
		n = solveP1(inp)
	case question.Part2:
		n = solveP2(inp)

	default:
		return false
	}

	fmt.Println("submitted", u.Name, p, sol)
	fmt.Println("actual", u.Name, p, n)
	return strconv.Itoa(n) == sol
}

//go:embed q05.md
var q05Text string