package ingest

import (
	"bytes"
	"encoding/json"
	"fmt"
	"net/http"
	"time"

	"git.apinb.com/ops/logs/internal/config"
)

// AlertReceiveBody 与 alert ReceiveRequest 对齐（含必填 raw_data）
type AlertReceiveBody struct {
	AlertName    string            `json:"alert_name"`
	Summary      string            `json:"summary"`
	Description  string            `json:"description"`
	SeverityCode string            `json:"severity_code"`
	Value        string            `json:"value"`
	Threshold    string            `json:"threshold"`
	Labels       map[string]string `json:"labels"`
	Agent        string            `json:"agent"`
	PolicyID     uint              `json:"policy_id"`
	RawData      json.RawMessage   `json:"raw_data"`
}

func forwardAlert(body AlertReceiveBody) error {
	cfg := config.Spec.AlertForward
	if cfg == nil || !cfg.Enabled || cfg.BaseURL == "" {
		return nil
	}
	if len(body.RawData) == 0 {
		return fmt.Errorf("raw_data 不能为空")
	}
	if body.AlertName == "" {
		body.AlertName = "日志告警"
	}
	if body.PolicyID == 0 && cfg.DefaultPolicyID > 0 {
		body.PolicyID = cfg.DefaultPolicyID
	}
	raw, err := json.Marshal(body)
	if err != nil {
		return err
	}
	url := cfg.BaseURL + "/Alert/v1/alerts/receive"
	req, err := http.NewRequest(http.MethodPost, url, bytes.NewReader(raw))
	if err != nil {
		return err
	}
	req.Header.Set("Content-Type", "application/json")
	if cfg.InternalKey != "" {
		req.Header.Set("X-Internal-Key", cfg.InternalKey)
	}
	client := &http.Client{Timeout: 10 * time.Second}
	resp, err := client.Do(req)
	if err != nil {
		return err
	}
	defer resp.Body.Close()
	if resp.StatusCode != http.StatusOK {
		return fmt.Errorf("alert returned HTTP %d", resp.StatusCode)
	}
	return nil
}