package httpapi

import (
	"net/http"
	"net/http/httptest"
	"strings"
	"testing"
)

func TestSecurityHeadersAndCORS(t *testing.T) {
	server := (&Server{AllowedOrigins: []string{"https://packages.example.com"}}).Handler()
	request := httptest.NewRequest(http.MethodGet, "/healthz", nil)
	request.Header.Set("Origin", "https://packages.example.com")
	response := httptest.NewRecorder()
	server.ServeHTTP(response, request)
	if response.Code != http.StatusOK {
		t.Fatalf("健康检查状态错误: %d", response.Code)
	}
	if response.Header().Get("Access-Control-Allow-Origin") != "https://packages.example.com" {
		t.Fatal("允许来源响应头错误")
	}
	if response.Header().Get("X-Content-Type-Options") != "nosniff" {
		t.Fatal("安全响应头缺失")
	}
	allowHeaders := response.Header().Get("Access-Control-Allow-Headers")
	if !strings.Contains(allowHeaders, "X-Project-Token") {
		t.Fatalf("项目令牌请求头未加入跨域允许列表：%s", allowHeaders)
	}
	if !strings.Contains(response.Header().Get("Access-Control-Allow-Methods"), "DELETE") {
		t.Fatal("项目成员删除方法未加入跨域允许列表")
	}
}

func TestHostGuardRejectsUnknownHost(t *testing.T) {
	server := (&Server{AllowedHosts: []string{"packages.example.com"}}).Handler()
	request := httptest.NewRequest(http.MethodGet, "http://unknown.example.com/healthz", nil)
	response := httptest.NewRecorder()
	server.ServeHTTP(response, request)
	if response.Code != http.StatusMisdirectedRequest {
		t.Fatalf("未知主机状态错误: %d", response.Code)
	}
}

func TestLocalHealthCheckBypassesProxyGuards(t *testing.T) {
	server := (&Server{
		AllowedHosts: []string{"packages.example.com"},
		ForceHTTPS:   true,
	}).Handler()
	request := httptest.NewRequest(http.MethodGet, "http://127.0.0.1:8080/healthz", nil)
	request.RemoteAddr = "127.0.0.1:34567"
	response := httptest.NewRecorder()
	server.ServeHTTP(response, request)
	if response.Code != http.StatusOK {
		t.Fatalf("本机健康检查状态错误: %d", response.Code)
	}
}

func TestRateLimit(t *testing.T) {
	server := (&Server{RateLimitPerMinute: 1}).Handler()
	first := httptest.NewRequest(http.MethodGet, "/healthz", nil)
	first.RemoteAddr = "192.0.2.10:1234"
	firstResponse := httptest.NewRecorder()
	server.ServeHTTP(firstResponse, first)
	if firstResponse.Code != http.StatusOK {
		t.Fatalf("首次请求状态错误: %d", firstResponse.Code)
	}
	second := httptest.NewRequest(http.MethodGet, "/healthz", nil)
	second.RemoteAddr = "192.0.2.10:5678"
	secondResponse := httptest.NewRecorder()
	server.ServeHTTP(secondResponse, second)
	if secondResponse.Code != http.StatusTooManyRequests {
		t.Fatalf("限流状态错误: %d", secondResponse.Code)
	}
}