package service

import (
	"encoding/json"
	"strings"
	"testing"
)

// 取自百度百科 BaikeLemmaCardApi 「立春」的真实返回片段
const sampleLemmaJSON = `{
	"id":25702,"key":"立春","desc":"二十四节气之一","title":"立春",
	"image":"https://bkimg.cdn.bcebos.com/pic/d62a6059252dd42a2834edd463674cb5c9ea15ce1205",
	"abstract":"立春（Beginning of Spring），又名正月节、岁节、改岁、岁旦、打春等，为二十四节气之首。当太阳到达黄经315°时为立春，于每年公历2月3-5日交节。",
	"card":[
		{"key":"m25_nameC","name":"中文名","value":["立春"]},
		{"key":"m25_nameE","name":"外文名","value":["Beginning of Spring<sup>3</sup><a name=\"ref_3\"></a>","Lichun"]},
		{"key":"m25_alternateName","name":"别名","value":["岁首、岁节、改岁、立春节、正月节"]},
		{"key":"m25_meaning","name":"涵义","value":["阳气上升，万物更生，新岁开启"]},
		{"key":"m25_solarDate","name":"公历时间","value":["公历2月3日-2月5日交节"]},
		{"key":"m25_ecliptic","name":"黄道位置","value":["太阳到达黄经315度"]},
		{"key":"m25_phenology","name":"物候现象","value":["东风解冻、蛰虫始振、鱼陟负冰"]},
		{"key":"m25_farming","name":"农事活动","value":["备耕春播"]},
		{"key":"m25_customs","name":"传统习俗","value":["<a target=_blank href=\"/item/x\">演春</a>、迎春、打春"]},
		{"key":"m25_health","name":"起居养生","value":["防躁动，避免过度劳累，保证睡眠情绪豁达。"]},
		{"key":"m25_flower","name":"花信","value":["迎春、樱桃、望春<sup>35</sup><a name=\"ref_35\"></a>"]}
	]
}`

func TestParseLemmaCard(t *testing.T) {
	var lemma baikeLemmaCard
	if err := json.Unmarshal([]byte(sampleLemmaJSON), &lemma); err != nil {
		t.Fatalf("JSON 解析失败: %v", err)
	}
	if lemma.Key != "立春" {
		t.Errorf("key = %q, want 立春", lemma.Key)
	}
	if lemma.Image == "" {
		t.Error("image 不应为空")
	}
	if !strings.Contains(lemma.Abstract, "二十四节气之首") {
		t.Errorf("abstract 应含「二十四节气之首」, got %q", lemma.Abstract)
	}
	if len(lemma.Card) == 0 {
		t.Fatal("card 不应为空")
	}
}

func TestLemmaCardMapping(t *testing.T) {
	var lemma baikeLemmaCard
	json.Unmarshal([]byte(sampleLemmaJSON), &lemma)

	extra := map[string]string{}
	for _, c := range lemma.Card {
		text := cleanTermHTML(firstValue(c.Value))
		if text == "" {
			continue
		}
		switch c.Name {
		case "别名":
			extra["alias"] = text
		case "外文名":
			extra["english"] = text
		case "涵义":
			extra["meaning"] = text
		case "物候现象":
			extra["phenology"] = text
		case "传统习俗":
			extra["customs"] = text
		case "起居养生":
			extra["health"] = text
		}
	}

	if extra["alias"] != "岁首、岁节、改岁、立春节、正月节" {
		t.Errorf("alias = %q", extra["alias"])
	}
	if extra["meaning"] != "阳气上升，万物更生，新岁开启" {
		t.Errorf("meaning = %q", extra["meaning"])
	}
	if extra["phenology"] != "东风解冻、蛰虫始振、鱼陟负冰" {
		t.Errorf("phenology = %q", extra["phenology"])
	}
	// 传统习俗含 HTML 链接，应被清洗
	if strings.Contains(extra["customs"], "<a") || strings.Contains(extra["customs"], "href") {
		t.Errorf("customs 应清洗 HTML, got %q", extra["customs"])
	}
	if !strings.Contains(extra["customs"], "演春") {
		t.Errorf("customs 应保留文字「演春」, got %q", extra["customs"])
	}
	// 外文名含 <sup> 应清洗
	if strings.Contains(extra["english"], "<sup>") {
		t.Errorf("english 应清洗 sup 标签, got %q", extra["english"])
	}
}

func TestCleanTermHTML(t *testing.T) {
	cases := map[string]string{
		`<a target=_blank href="/item/x">演春</a>、迎春`: "演春、迎春",
		`Beginning of Spring<sup>3</sup><a name="ref_3"></a>`: "Beginning of Spring",
		`  多余&nbsp;  空白  `: "多余 空白",
	}
	for in, want := range cases {
		if got := cleanTermHTML(in); got != want {
			t.Errorf("cleanTermHTML(%q) = %q, want %q", in, got, want)
		}
	}
}

func TestFirstSentence(t *testing.T) {
	s := "立春为二十四节气之首。当太阳到达黄经315°时为立春。"
	if got := firstSentence(s); got != "立春为二十四节气之首。" {
		t.Errorf("firstSentence = %q", got)
	}
	// 无句号时返回原文
	if got := firstSentence("无句号文本"); got != "无句号文本" {
		t.Errorf("firstSentence 无句号 = %q", got)
	}
}

func TestTermSort(t *testing.T) {
	if termSort("立春") != 1 {
		t.Errorf("termSort(立春) = %d, want 1", termSort("立春"))
	}
	if termSort("大寒") != 24 {
		t.Errorf("termSort(大寒) = %d, want 24", termSort("大寒"))
	}
	if termSort("不存在") != 0 {
		t.Errorf("termSort(不存在) = %d, want 0", termSort("不存在"))
	}
}