package service

import "strings"

// searchKeywordReplys 搜索关键词并返回对应的回复内容
func SearchKeywordReplys(replys string, keyword string) string {
	var replyContent string
	if replys == "" || keyword == "" {
		return replyContent
	}
	replyLines := strings.Split(replys, "\n")
	maxMatch := 0   // 最大匹配关键词数量
	bestReply := "" // 最佳回复内容
	for _, reply := range replyLines {
		qa := strings.Split(reply, "#")
		if len(qa) == 2 {
			questions := strings.Split(qa[0], "|")
			matchCount := countMatchingKeywords(keyword, questions)
			if matchCount > maxMatch {
				bestReply = qa[1] // 更新最佳回复
				maxMatch = matchCount
			}
		}
	}
	return bestReply
}

// countMatchingKeywords 计算字符串包含的关键词数量
func countMatchingKeywords(inputString string, keywords []string) int {
	count := 0
	for _, kw := range keywords {
		if kw == "" {
			continue
		}
		if strings.Contains(inputString, kw) {
			count++
		}
	}
	return count
}