// utils/http_client.go
package utils

import (
	"bytes"
	"context"
	"crypto/tls"
	"encoding/json"
	"fmt"
	"io"
	"net/http"
	"time"
)

type HTTPClient interface {
	PostJSON(ctx context.Context, url string, body interface{}) ([]byte, error)
}

type httpClient struct {
	client *http.Client
}

func NewHttpClient(timeout time.Duration, isSkipSSLVerify bool) HTTPClient {
	return &httpClient{
		client: &http.Client{
			Timeout: timeout,
			Transport: &http.Transport{
				TLSClientConfig: &tls.Config{
					InsecureSkipVerify: isSkipSSLVerify, // 跳过 SSL 验证
				},
				MaxIdleConns:       100,
				IdleConnTimeout:    90 * time.Second,
				DisableCompression: true,
			},
		},
	}
}

func (c *httpClient) PostJSON(ctx context.Context, url string, body interface{}) ([]byte, error) {
	// 创建请求体
	var reqBody []byte
	if body != nil {
		var err error
		reqBody, err = json.Marshal(body)
		if err != nil {
			return nil, fmt.Errorf("JSON序列化失败: %w", err)
		}
	}

	// 创建HTTP请求
	req, err := http.NewRequestWithContext(ctx, "POST", url, bytes.NewReader(reqBody))
	if err != nil {
		return nil, fmt.Errorf("创建请求失败: %w", err)
	}

	req.Header.Set("Content-Type", "application/json")
	req.Header.Set("Accept", "application/json")

	// 发送请求
	resp, err := c.client.Do(req)
	if err != nil {
		return nil, fmt.Errorf("网络请求失败: %w", err)
	}
	defer resp.Body.Close()

	// 检查状态码
	if resp.StatusCode < 200 || resp.StatusCode >= 300 {
		return nil, fmt.Errorf("非成功状态码: %d", resp.StatusCode)
	}

	// 读取响应内容
	respBody, err := io.ReadAll(resp.Body)
	if err != nil {
		return nil, fmt.Errorf("读取响应失败: %w", err)
	}

	return respBody, nil
}