package app

import (
	"errors"
	"strings"
)

const mediaSupplyPublicSupplierCode = "authority_news"

var errMediaSupplyAccountUserIDMissing = errors.New("media supply account user_id is not configured")

func publicMediaSupplySupplierCode(supplier string) string {
	supplier = strings.TrimSpace(supplier)
	if supplier == "" {
		return ""
	}
	if strings.EqualFold(supplier, mediaSupplySupplierMeijiequan) {
		return mediaSupplyPublicSupplierCode
	}
	return "media_supply"
}

func publicMediaSupplyArticleURL(value string) string {
	value = strings.TrimSpace(value)
	if value == "" {
		return ""
	}
	if isLikelyPublishedArticleURL(value) {
		return value
	}
	return ""
}

func mediaSupplyPublicErrorMessage(err error) string {
	if err == nil {
		return ""
	}
	switch {
	case errors.Is(err, errMeijiequanCredentialsMissing):
		return "媒体供应商账号未配置，请联系管理员处理"
	case errors.Is(err, errMeijiequanSessionMissing), errors.Is(err, errMeijiequanSessionExpired), errors.Is(err, errMeijiequanAuthRequired):
		return "媒体供应商登录状态已失效，请联系管理员处理"
	case errors.Is(err, errMeijiequanChallengeRequired):
		return "媒体供应商登录验证失败，请联系管理员处理"
	case errors.Is(err, errMeijiequanOrderRejected):
		return "媒体供应商拒绝投稿，请检查文章内容或联系管理员处理"
	case errors.Is(err, errMediaSupplySelectedResourcesMissing):
		return "媒体资源暂不可用或已下架，请重新选择媒体"
	case errors.Is(err, errMediaSupplyLockedSellBelowCost):
		return "媒体成本价已变化，当前锁定价格低于成本，请重新提交"
	case errors.Is(err, errMediaSupplyAccountUserIDMissing):
		return "媒体供应商账号信息不完整，请联系管理员处理"
	default:
		return mediaSupplyPublicGenericErrorMessage(err.Error())
	}
}

func mediaSupplyPublicGenericErrorMessage(message string) string {
	message = strings.TrimSpace(message)
	if message == "" {
		return "媒体投稿失败，请稍后重试或联系管理员"
	}
	lower := strings.ToLower(message)
	switch {
	case strings.Contains(lower, "failed to refresh supplier price"):
		return "媒体资源暂不可用或已下架，请重新选择媒体"
	case strings.Contains(lower, "supplier cost increased above locked sell price"):
		return "媒体成本价已变化，当前锁定价格低于成本，请重新提交"
	case strings.Contains(lower, "username") || strings.Contains(lower, "password") || strings.Contains(lower, "credentials"):
		return "媒体供应商账号未配置，请联系管理员处理"
	case strings.Contains(lower, "session") || strings.Contains(lower, "authentication") || strings.Contains(lower, "auth required"):
		return "媒体供应商登录状态已失效，请联系管理员处理"
	case strings.Contains(lower, "challenge") || strings.Contains(lower, "captcha"):
		return "媒体供应商登录验证失败，请联系管理员处理"
	case strings.Contains(lower, "user_id"):
		return "媒体供应商账号信息不完整，请联系管理员处理"
	case strings.Contains(lower, "meijiequan"):
		return "媒体供应商请求失败，请稍后重试或联系管理员"
	case strings.Contains(lower, "supplier"):
		return "媒体投稿失败，请稍后重试或联系管理员"
	case strings.Contains(lower, "failed to"):
		return "媒体投稿失败，请稍后重试或联系管理员"
	default:
		if hasCJKText(message) {
			return message
		}
		return "媒体投稿失败，请稍后重试或联系管理员"
	}
}

func hasCJKText(message string) bool {
	for _, r := range message {
		if r >= '\u4e00' && r <= '\u9fff' {
			return true
		}
	}
	return false
}