package playletser

import (
	"fmt"
	"net/url"
	"strconv"
	"strings"
)

func pathSegment(slug string, id int64) string {
	slug = strings.TrimSpace(slug)
	if slug == "" && id > 0 {
		slug = strconv.FormatInt(id, 10)
	}
	if slug == "" {
		return ""
	}
	return url.PathEscape(slug)
}

func detailURL(slug string, id int64) string {
	if segment := pathSegment(slug, id); segment != "" {
		return "/detail/" + segment + "/"
	}
	return "#"
}

func playURL(slug string, playletID int64) string {
	if segment := pathSegment(slug, playletID); segment != "" {
		return "/play/" + segment + "/"
	}
	return "#"
}

func chapterPlayURL(slug string, playletID, chapterID int64) string {
	path := playURL(slug, playletID)
	if path == "#" || chapterID <= 0 {
		return path
	}
	return fmt.Sprintf("%s%d/", path, chapterID)
}

func categoryURL(slug string, id int64) string {
	if segment := pathSegment(slug, id); segment != "" {
		return "/topic/" + segment + "/"
	}
	return "/topic/"
}

func DetailPath(slug string, id int64) string {
	return detailURL(slug, id)
}

func PlayPath(slug string, id int64) string {
	return playURL(slug, id)
}

func ChapterPlayPath(slug string, playletID, chapterID int64) string {
	return chapterPlayURL(slug, playletID, chapterID)
}

func updateStatusText(status int) string {
	if status == 2 {
		return "已完结"
	}
	return "连载中"
}

func browseText(n int64) string {
	if n <= 0 {
		return "0次播放"
	}
	if n < 10000 {
		return fmt.Sprintf("%d次播放", n)
	}
	v := float64(n) / 10000
	if v >= 100 {
		return fmt.Sprintf("%.0f万次播放", v)
	}
	return fmt.Sprintf("%.1f万次播放", v)
}

func usableAnchor(anchor string) string {
	anchor = strings.TrimSpace(anchor)
	if anchor == "" || anchor == "暂无" {
		return ""
	}
	return anchor
}

func rankClass(rank int) string {
	switch rank {
	case 1:
		return "gold"
	case 2:
		return "silver"
	case 3:
		return "bronze"
	default:
		return "dark"
	}
}

func episodeText(n int) string {
	if n <= 0 {
		return ""
	}
	return fmt.Sprintf("%d集", n)
}

func formatHeat(n int64) string {
	if n <= 0 {
		return "0 热度"
	}
	if n < 10000 {
		return fmt.Sprintf("%d 热度", n)
	}
	v := float64(n) / 10000
	if v >= 100 {
		return fmt.Sprintf("%.0f万 热度", v)
	}
	return fmt.Sprintf("%.1f万 热度", v)
}

// formatLikeCount 封面点赞数展示：不足一万原样，否则 x.x万。
func formatLikeCount(n int64) string {
	if n <= 0 {
		return "0"
	}
	if n < 10000 {
		return fmt.Sprintf("%d", n)
	}
	v := float64(n) / 10000
	if v >= 100 {
		return fmt.Sprintf("%.0f万", v)
	}
	return fmt.Sprintf("%.1f万", v)
}

func firstNonEmpty(values ...string) string {
	for _, v := range values {
		if strings.TrimSpace(v) != "" {
			return v
		}
	}
	return ""
}