package core

// 桥口 /tasks 接口测试：油猴脚本靠它把「已推送」的画廊标题标灰

import (
	"encoding/json"
	"fmt"
	"io"
	"net"
	"net/http"
	"strings"
	"testing"
	"time"

	"eh-downloader-wails/internal/eh"
)

// 起一个真实监听的桥口，返回 base URL
func startTestBridge(t *testing.T, s *Store) string {
	t.Helper()
	return startTestBridgeWith(t, s, nil)
}

// listenLoopbackPort 拿一个空闲端口（监听后立刻关掉，把端口号交出去）
func listenLoopbackPort() (func() int, error) {
	ln, err := net.Listen("tcp", "127.0.0.1:0")
	if err != nil {
		return nil, err
	}
	port := ln.Addr().(*net.TCPAddr).Port
	_ = ln.Close()
	return func() int { return port }, nil
}

// startTestBridgeWith 起桥口，可选挂推送历史
func startTestBridgeWith(t *testing.T, s *Store, p *PushedStore) string {
	t.Helper()
	b := NewBridge(s, func(string, string) {}, func(Task, bool, bool) {})
	if p != nil {
		b.SetPushedStore(p)
	}
	// 端口用 0 让系统分配，避免和真实例撞端口
	ln, err := net.Listen("tcp", "127.0.0.1:0")
	if err != nil {
		t.Fatalf("监听失败: %v", err)
	}
	port := ln.Addr().(*net.TCPAddr).Port
	_ = ln.Close()
	b.Start(port)
	// 等端口就绪
	deadline := time.Now().Add(3 * time.Second)
	for time.Now().Before(deadline) {
		resp, err := http.Get(fmt.Sprintf("http://127.0.0.1:%d/ping", port))
		if err == nil {
			resp.Body.Close()
			break
		}
		time.Sleep(20 * time.Millisecond)
	}
	t.Cleanup(b.Stop)
	return fmt.Sprintf("http://127.0.0.1:%d", port)
}

func getWithToken(t *testing.T, url, token string) (int, []byte) {
	t.Helper()
	req, err := http.NewRequest("GET", url, nil)
	if err != nil {
		t.Fatalf("建请求失败: %v", err)
	}
	if token != "" {
		req.Header.Set("X-EHDL-Token", token)
	}
	resp, err := http.DefaultClient.Do(req)
	if err != nil {
		t.Fatalf("请求失败: %v", err)
	}
	defer resp.Body.Close()
	body, _ := io.ReadAll(resp.Body)
	return resp.StatusCode, body
}

func TestBridgeTasks(t *testing.T) {
	s, _ := newTestStore(t)
	base := startTestBridge(t, s)

	// 空的：返回 0 条
	code, body := getWithToken(t, base+"/tasks", BridgeToken)
	if code != http.StatusOK {
		t.Fatalf("空清单状态码应为 200，实际 %d: %s", code, body)
	}
	var j struct {
		OK    bool `json:"ok"`
		Count int  `json:"count"`
		Tasks []struct {
			GID   string `json:"gid"`
			Token string `json:"token"`
			Title string `json:"title"`
		} `json:"tasks"`
	}
	if err := json.Unmarshal(body, &j); err != nil {
		t.Fatalf("解析失败: %v (%s)", err, body)
	}
	if !j.OK || j.Count != 0 || len(j.Tasks) != 0 {
		t.Fatalf("空清单应为空: %s", body)
	}

	// 加两个任务
	s.AddTasks([]eh.GalleryRef{
		{GID: "111", Token: "aaa", Raw: "https://e-hentai.org/g/111/aaa/", Title: "T1"},
		{GID: "222", Token: "bbb", Raw: "https://e-hentai.org/g/222/bbb/", Title: "T2"},
	})
	s.SetTitle("111", "aaa", "T1")

	code, body = getWithToken(t, base+"/tasks", BridgeToken)
	if code != http.StatusOK {
		t.Fatalf("状态码应为 200，实际 %d: %s", code, body)
	}
	if err := json.Unmarshal(body, &j); err != nil {
		t.Fatalf("解析失败: %v (%s)", err, body)
	}
	if j.Count != 2 || len(j.Tasks) != 2 {
		t.Fatalf("应有 2 条任务，实际 count=%d len=%d: %s", j.Count, len(j.Tasks), body)
	}
	gids := map[string]string{}
	for _, task := range j.Tasks {
		gids[task.GID] = task.Token
		if task.GID == "111" && task.Title != "T1" {
			t.Errorf("标题没带回来: %+v", task)
		}
	}
	if gids["111"] != "aaa" || gids["222"] != "bbb" {
		t.Errorf("gid/token 对不上: %+v", gids)
	}
}

func TestBridgeTasksRejectsBadToken(t *testing.T) {
	s, _ := newTestStore(t)
	base := startTestBridge(t, s)

	// 不带 token -> 403
	code, _ := getWithToken(t, base+"/tasks", "")
	if code != http.StatusForbidden {
		t.Errorf("缺 token 应 403，实际 %d", code)
	}
	// 错 token -> 403
	code, _ = getWithToken(t, base+"/tasks", "wrong-token")
	if code != http.StatusForbidden {
		t.Errorf("错 token 应 403，实际 %d", code)
	}
	// 对 token -> 200
	code, _ = getWithToken(t, base+"/tasks", BridgeToken)
	if code != http.StatusOK {
		t.Errorf("对 token 应 200，实际 %d", code)
	}
}

func TestBridgeAddThenTasks(t *testing.T) {
	s, _ := newTestStore(t)
	base := startTestBridge(t, s)

	// 通过 /add 推一个画廊，再从 /tasks 里查出来
	payload := strings.NewReader(`{"gid":"333","token":"ccc","url":"https://e-hentai.org/g/333/ccc/","title":"T3"}`)
	req, _ := http.NewRequest("POST", base+"/add", payload)
	req.Header.Set("Content-Type", "application/json")
	req.Header.Set("X-EHDL-Token", BridgeToken)
	resp, err := http.DefaultClient.Do(req)
	if err != nil {
		t.Fatalf("POST /add 失败: %v", err)
	}
	resp.Body.Close()
	if resp.StatusCode != http.StatusOK {
		t.Fatalf("POST /add 应 200，实际 %d", resp.StatusCode)
	}

	code, body := getWithToken(t, base+"/tasks", BridgeToken)
	if code != http.StatusOK {
		t.Fatalf("/tasks 应 200，实际 %d", code)
	}
	if !strings.Contains(string(body), "333") {
		t.Errorf("/tasks 里应能看到刚推的 333: %s", body)
	}
}