package api

import (
	"bytes"
	"context"
	"encoding/json"
	"net/http"
	"net/http/httptest"
	"testing"
	"time"

	"github.com/gin-gonic/gin"

	"git.pyer.club/kingecg/gotidb/pkg/manager"
	"git.pyer.club/kingecg/gotidb/pkg/model"
	"git.pyer.club/kingecg/gotidb/pkg/storage"
)

func setupTestRESTServer() *RESTServer {
	// 创建存储引擎
	engine := storage.NewMemoryEngine()

	// 创建数据管理器
	dataManager := manager.NewDataManager(engine)

	// 创建REST服务器
	server := NewRESTServer(dataManager)

	return server
}

func TestRESTServer_WriteEndpoint(t *testing.T) {
	// 设置测试模式
	gin.SetMode(gin.TestMode)

	// 创建测试服务器
	server := setupTestRESTServer()

	// 创建测试请求
	writeReq := RESTWriteRequest{
		DeviceID:   "test-device",
		MetricCode: "temperature",
		Labels: map[string]string{
			"location": "room1",
		},
		Value: 25.5,
	}

	body, _ := json.Marshal(writeReq)
	req, _ := http.NewRequest("POST", "/api/v1/write", bytes.NewBuffer(body))
	req.Header.Set("Content-Type", "application/json")

	// 创建响应记录器
	w := httptest.NewRecorder()

	// 设置路由
	r := gin.New()
	r.POST("/api/v1/write", server.handleWrite)

	// 执行请求
	r.ServeHTTP(w, req)

	// 检查响应状态码
	if w.Code != http.StatusOK {
		t.Errorf("Expected status code %d, got %d", http.StatusOK, w.Code)
	}

	// 解析响应
	var resp Response
	err := json.Unmarshal(w.Body.Bytes(), &resp)
	if err != nil {
		t.Errorf("Failed to unmarshal response: %v", err)
	}

	// 验证响应
	if resp["status"] != "ok" {
		t.Errorf("Expected success to be true, got false")
	}
}

func TestRESTServer_BatchWriteEndpoint(t *testing.T) {
	// 设置测试模式
	gin.SetMode(gin.TestMode)

	// 创建测试服务器
	server := setupTestRESTServer()

	// 创建测试请求
	batchReq := BatchWriteRequest{
		Points: []RESTWriteRequest{
			{
				DeviceID:   "test-device",
				MetricCode: "temperature",
				Labels: map[string]string{
					"location": "room1",
				},
				Value: 25.5,
			},
			{
				DeviceID:   "test-device",
				MetricCode: "humidity",
				Labels: map[string]string{
					"location": "room1",
				},
				Value: 60.0,
			},
		},
	}

	body, _ := json.Marshal(batchReq)
	req, _ := http.NewRequest("POST", "/api/v1/batch_write", bytes.NewBuffer(body))
	req.Header.Set("Content-Type", "application/json")

	// 创建响应记录器
	w := httptest.NewRecorder()

	// 设置路由
	r := gin.New()
	r.POST("/api/v1/batch_write", server.handleBatchWrite)

	// 执行请求
	r.ServeHTTP(w, req)

	// 检查响应状态码
	if w.Code != http.StatusOK {
		t.Errorf("Expected status code %d, got %d", http.StatusOK, w.Code)
	}

	// 解析响应
	var resp Response
	err := json.Unmarshal(w.Body.Bytes(), &resp)
	if err != nil {
		t.Errorf("Failed to unmarshal response: %v", err)
	}

	// 验证响应
	if resp["status"] != "ok" {
		t.Errorf("Expected success to be true, got false")
	}

	// 验证计数
	if count, ok := resp["count"].(float64); !ok || count != 2 {
		t.Errorf("Expected count to be 2, got %v", resp["count"])
	}
}

func TestRESTServer_QueryEndpoint(t *testing.T) {
	// 设置测试模式
	gin.SetMode(gin.TestMode)

	// 创建测试服务器
	server := setupTestRESTServer()

	// 写入测试数据
	engine := storage.NewMemoryEngine()
	dataManager := manager.NewDataManager(engine)
	server.dataManager = dataManager

	id := model.DataPointID{
		DeviceID:   "test-device",
		MetricCode: "temperature",
		Labels: map[string]string{
			"location": "room1",
		},
	}

	now := time.Now()
	value := model.DataValue{
		Timestamp: now,
		Value:     25.5,
	}

	err := dataManager.Write(context.Background(), id, value)
	if err != nil {
		t.Fatalf("Failed to write test data: %v", err)
	}

	// 创建测试请求
	queryReq := QueryRequest{
		DeviceID:   "test-device",
		MetricCode: "temperature",
		Labels: map[string]string{
			"location": "room1",
		},
		QueryType: "latest",
	}

	body, _ := json.Marshal(queryReq)
	req, _ := http.NewRequest("POST", "/api/v1/query", bytes.NewBuffer(body))
	req.Header.Set("Content-Type", "application/json")

	// 创建响应记录器
	w := httptest.NewRecorder()

	// 设置路由
	r := gin.New()
	r.POST("/api/v1/query", server.handleQuery)

	// 执行请求
	r.ServeHTTP(w, req)

	// 检查响应状态码
	if w.Code != http.StatusOK {
		t.Errorf("Expected status code %d, got %d", http.StatusOK, w.Code)
	}

	// 解析响应
	var resp Response
	err = json.Unmarshal(w.Body.Bytes(), &resp)
	if err != nil {
		t.Errorf("Failed to unmarshal response: %v", err)
	}

	// 验证响应
	if resp["status"] != "ok" {
		t.Errorf("Expected success to be true, got false")
	}

	// 验证返回的数据
	if resp["timestamp"] == nil {
		t.Errorf("Expected data to be non-nil")
	}

	// // 验证最新值
	// if resp.QueryType != "latest" {
	// 	t.Errorf("Expected query_type to be 'latest', got '%s'", resp.QueryType)
	// }

	// if resp.Data.(map[string]interface{})["value"] != 25.5 {
	// 	t.Errorf("Expected value to be 25.5, got %v", resp.Data.(map[string]interface{})["value"])
	// }
}

func TestRESTServer_Start(t *testing.T) {
	// 创建测试服务器
	server := setupTestRESTServer()

	// 启动服务器（在后台）
	go func() {
		err := server.Start(":0") // 使用随机端口
		if err != nil && err != http.ErrServerClosed {
			t.Errorf("Failed to start server: %v", err)
		}
	}()

	// 给服务器一点时间启动
	time.Sleep(100 * time.Millisecond)

	// 停止服务器
	err := server.Stop(context.Background())
	if err != nil {
		t.Errorf("Failed to stop server: %v", err)
	}
}