package report

import (
	"encoding/json"
	"errors"
	"fmt"
	"io"
	"net/http"
	"proxy-server/edge/core"
	"proxy-server/edge/env"
	"strings"
)

func Online() (id int32, host string, err error) {
	bytes, err := json.Marshal(map[string]any{
		"name":    env.Name,
		"version": core.Version,
	})
	if err != nil {
		return 0, "", err
	}
	var body = strings.NewReader(string(bytes))

	resp, err := http.Post(env.EndpointAssign, "application/json", body)
	if err != nil {
		return 0, "", fmt.Errorf("执行请求失败: %w", err)
	}
	defer func(Body io.ReadCloser) {
		_ = Body.Close()
	}(resp.Body)

	if resp.StatusCode != http.StatusOK {
		return 0, "", errors.New("状态码: " + resp.Status)
	}

	bytes, err = io.ReadAll(resp.Body)
	if err != nil {
		return 0, "", fmt.Errorf("读取响应失败: %w", err)
	}
	var respBody struct {
		Id   int32  `json:"id"`
		Host string `json:"host"`
	}
	err = json.Unmarshal(bytes, &respBody)
	if err != nil {
		return 0, "", fmt.Errorf("解析响应失败: %w", err)
	}
	if respBody.Host == "" {
		return 0, "", errors.New("响应体为空")
	}

	return respBody.Id, respBody.Host, nil
}