package main

import (
	"errors"
	"net"
	"net/http"
	"strings"
	"testing"
	"time"
)

func TestListenDesktopPortReturnsReusableListener(t *testing.T) {
	listener, err := listenDesktopPort(0)
	if err != nil {
		t.Fatalf("listener-first 应直接获取配置端口 listener: %v", err)
	}
	defer listener.Close()

	server := &http.Server{ReadHeaderTimeout: time.Second}
	done := make(chan struct{})
	go func() {
		defer close(done)
		err := server.Serve(listener)
		if err != nil && err != http.ErrServerClosed && !errors.Is(err, net.ErrClosed) {
			t.Errorf("使用同一个 listener 启动 server 失败: %v", err)
		}
	}()

	if err := server.Close(); err != nil {
		t.Fatalf("关闭测试 server 失败: %v", err)
	}
	<-done
}

func TestGetDesktopConfigPath(t *testing.T) {
	path := getDesktopConfigPath()
	if path == "" {
		t.Fatal("getDesktopConfigPath 应返回非空路径")
	}
	if !strings.Contains(path, "config.yaml") {
		t.Fatalf("路径应包含 config.yaml，实际: %s", path)
	}
	t.Log("getDesktopConfigPath 测试通过")
}

func TestDesktopConfiguredPortHelpers(t *testing.T) {
	port := 19830

	if got := desktopListenAddr(port); got != ":19830" {
		t.Fatalf("HTTP 监听地址应使用配置端口，实际: %s", got)
	}
	if got := desktopURL(port); got != "http://localhost:19830" {
		t.Fatalf("浏览器 URL 应使用配置端口，实际: %s", got)
	}
	if got := desktopPortMenuTitle(port); got != "端口: 19830" {
		t.Fatalf("托盘端口显示应使用配置端口，实际: %s", got)
	}
}

func TestDesktopConfigErrorMessageContainsPathAndReason(t *testing.T) {
	msg := desktopConfigErrorMessage("/tmp/nex/config.yaml", errors.New("yaml parse failed"))

	if !strings.Contains(msg, "/tmp/nex/config.yaml") {
		t.Fatalf("配置错误提示应包含配置路径，实际: %s", msg)
	}
	if !strings.Contains(msg, "yaml parse failed") {
		t.Fatalf("配置错误提示应包含失败原因，实际: %s", msg)
	}
}