package ui

import (
	"regexp"
	"strings"

	"github.com/ayntgl/discordgo"
)

var (
	boldRegex          = regexp.MustCompile(`(?m)\*\*(.*?)\*\*`)
	italicRegex        = regexp.MustCompile(`(?m)\*(.*?)\*`)
	underlineRegex     = regexp.MustCompile(`(?m)__(.*?)__`)
	strikeThroughRegex = regexp.MustCompile(`(?m)~~(.*?)~~`)
)

func parseMarkdown(md string) string {
	var res string
	res = boldRegex.ReplaceAllString(md, "[::b]$1[::-]")
	res = italicRegex.ReplaceAllString(res, "[::i]$1[::-]")
	res = underlineRegex.ReplaceAllString(res, "[::u]$1[::-]")
	res = strikeThroughRegex.ReplaceAllString(res, "[::s]$1[::-]")

	return res
}

func channelToString(c *discordgo.Channel) string {
	var repr string
	if c.Name != "" {
		repr = "#" + c.Name
	} else if len(c.Recipients) == 1 {
		rp := c.Recipients[0]
		repr = rp.Username + "#" + rp.Discriminator
	} else {
		rps := make([]string, len(c.Recipients))
		for i, r := range c.Recipients {
			rps[i] = r.Username + "#" + r.Discriminator
		}

		repr = strings.Join(rps, ", ")
	}

	return repr
}

func hasKeybinding(ks []string, k string) bool {
	for _, repr := range ks {
		if repr == k {
			return true
		}
	}

	return false
}