package license

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

// redeemOnline 向你们的核销服务登记/校验延期包 id（删光本地数据后仍能拦截旧包）。
func (m *Manager) redeemOnline(leaseID, action string) error {
	base := strings.TrimRight(strings.TrimSpace(m.cfg.RedeemURL), "/")
	if base == "" {
		return nil
	}
	leaseID = strings.TrimSpace(leaseID)
	if leaseID == "" {
		return fmt.Errorf("lease id 为空")
	}
	body, _ := json.Marshal(map[string]string{
		"id":       leaseID,
		"customer": strings.TrimSpace(m.cfg.Customer),
		"action":   action, // check | redeem
		"secret":   strings.TrimSpace(m.cfg.ControlSecret),
	})
	client := &http.Client{Timeout: 15 * time.Second}
	req, err := http.NewRequest(http.MethodPost, base+"/v1/license/redeem", bytes.NewReader(body))
	if err != nil {
		return err
	}
	req.Header.Set("Content-Type", "application/json")
	req.Header.Set("X-License-Secret", strings.TrimSpace(m.cfg.ControlSecret))
	resp, err := client.Do(req)
	if err != nil {
		return fmt.Errorf("核销服务不可达（已配置 RedeemURL，导入需联网）: %w", err)
	}
	defer resp.Body.Close()
	var out struct {
		OK    bool   `json:"ok"`
		Error string `json:"error"`
	}
	_ = json.NewDecoder(resp.Body).Decode(&out)
	if resp.StatusCode >= 300 || !out.OK {
		msg := out.Error
		if msg == "" {
			msg = fmt.Sprintf("核销失败 HTTP %d", resp.StatusCode)
		}
		return fmt.Errorf("%s", msg)
	}
	return nil
}