package main

import (
	"fmt"
	"strings"
	"unicode"

	"srs.epita.fr/fic-server/libfic"
)

func EPITACheckKeyFlag(flag *fic.FlagKey, raw string) (errs []error) {
	if (flag.Label[0] == 'Q' || flag.Label[0] == 'q') && (flag.Label[1] == 'U' || flag.Label[1] == 'u') ||
		(flag.Label[0] == 'W' || flag.Label[0] == 'w') && (flag.Label[1] == 'H' || flag.Label[1] == 'h') {
		errs = append(errs, fmt.Errorf("Label should not begin with %s. This seem to be a question. Reword your label as a description of the expected flag, `:` are automatically appended.", flag.Label[0:2]))
		flag.Label = flag.Label[1:]
	}

	if flag.Label[len(flag.Label)-1] != ')' && flag.Label[len(flag.Label)-1] != '©' && !unicode.IsLetter(rune(flag.Label[len(flag.Label)-1])) && !unicode.IsDigit(rune(flag.Label[len(flag.Label)-1])) {
		errs = append(errs, fmt.Errorf("Label should not end with punct (%q). Reword your label as a description of the expected flag, `:` are automatically appended.", flag.Label[len(flag.Label)-1]))
	}

	if strings.HasPrefix(strings.ToLower(raw), "cve-") && flag.Type != "ucq" {
		errs = append(errs, fmt.Errorf("CVE numbers are required to be UCQ with choice_cost"))
	}

	return
}

func EPITACheckKeyFlagWithChoices(flag *fic.FlagKey, raw string, choices []*fic.FlagChoice) (errs []error) {
	if len(choices) < 10 && flag.ChoicesCost == 0 {
		errs = append(errs, fmt.Errorf("requires at least 10 choices to avoid brute-force"))
	} else if len(choices) < 6 && flag.ChoicesCost > 0 {
		errs = append(errs, fmt.Errorf("requires at least 10 choices to avoid brute-force"))
	}

	return
}