package handler

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

	"gotest/internal/model"

	"github.com/gin-gonic/gin"
	"gorm.io/gorm"
)

// CustomerHandler 客户信息收集处理器
type CustomerHandler struct {
	db *gorm.DB
}

// NewCustomerHandler 创建客户信息收集处理器
func NewCustomerHandler(db *gorm.DB) *CustomerHandler {
	return &CustomerHandler{db: db}
}

// CustomerRequest 客户信息请求
type CustomerRequest struct {
	Name    string `json:"name" binding:"required"`
	Phone   string `json:"phone" binding:"required"`
	Company string `json:"company"`
	Email   string `json:"email"`
	Needs   string `json:"needs" binding:"required"`
}

// Submit 提交客户信息 POST /api/v1/customer/submit
func (h *CustomerHandler) Submit(c *gin.Context) {
	var req CustomerRequest
	if err := c.ShouldBindJSON(&req); err != nil {
		FailBadRequest(c, "请填写完整的联系信息")
		return
	}

	// 构建企业微信消息内容
	content := fmt.Sprintf("【新客户咨询】\n"+
		"━━━━━━━━━━━━━━━━━━━━\n"+
		"👤 姓名：%s\n"+
		"📱 电话：%s\n"+
		"📧 邮箱：%s\n"+
		"🏢 公司：%s\n"+
		"💼 需求：%s\n"+
		"⏰ 时间：%s\n"+
		"━━━━━━━━━━━━━━━━━━━━",
		req.Name, req.Phone, req.Email, req.Company, req.Needs, time.Now().Format("2006-01-02 15:04:05"))

	// 发送到企业微信webhook
	if err := h.sendToWechatWebhook(content); err != nil {
		fmt.Printf("发送企业微信webhook失败: %v\n", err)
	}

	Success(c, gin.H{
		"message": "提交成功，我们会尽快联系您！",
	})
}

// getWebhookURL 从数据库获取webhook URL
func (h *CustomerHandler) getWebhookURL() string {
	var cfg model.Config
	if err := h.db.Where("`key` = ?", "wechat_webhook_url").First(&cfg).Error; err == nil && cfg.Value != "" {
		return cfg.Value
	}
	return "https://qyapi.weixin.qq.com/cgi-bin/webhook/send?key=71110fd5-9f51-4695-88dc-85ca34385d66"
}

// sendToWechatWebhook 发送消息到企业微信群机器人
func (h *CustomerHandler) sendToWechatWebhook(content string) error {
	webhookURL := h.getWebhookURL()

	message := map[string]interface{}{
		"msgtype": "text",
		"text": map[string]string{
			"content": content,
		},
	}

	jsonData, err := json.Marshal(message)
	if err != nil {
		return fmt.Errorf("序列化消息失败: %w", err)
	}

	resp, err := http.Post(webhookURL, "application/json", bytes.NewBuffer(jsonData))
	if err != nil {
		return fmt.Errorf("发送请求失败: %w", err)
	}
	defer resp.Body.Close()

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

	if resp.StatusCode != http.StatusOK {
		return fmt.Errorf("请求失败，状态码: %d，响应: %s", resp.StatusCode, string(body))
	}

	var result map[string]interface{}
	if err := json.Unmarshal(body, &result); err != nil {
		return fmt.Errorf("解析响应失败: %w", err)
	}

	if errcode, ok := result["errcode"].(float64); ok && errcode != 0 {
		errmsg, _ := result["errmsg"].(string)
		return fmt.Errorf("企业微信返回错误: %v - %s", errcode, errmsg)
	}

	return nil
}

// TestWebhook 测试webhook POST /api/v1/admin/webhook/test
func (h *CustomerHandler) TestWebhook(c *gin.Context) {
	webhookURL := h.getWebhookURL()

	content := fmt.Sprintf("✅ Webhook 测试成功\n⏰ 时间：%s", time.Now().Format("2006-01-02 15:04:05"))

	message := map[string]interface{}{
		"msgtype": "text",
		"text": map[string]string{
			"content": content,
		},
	}

	jsonData, err := json.Marshal(message)
	if err != nil {
		FailInternal(c, "序列化失败: "+err.Error())
		return
	}

	resp, err := http.Post(webhookURL, "application/json", bytes.NewBuffer(jsonData))
	if err != nil {
		FailInternal(c, "发送失败: "+err.Error())
		return
	}
	defer resp.Body.Close()

	body, _ := io.ReadAll(resp.Body)

	var result map[string]interface{}
	json.Unmarshal(body, &result)

	if errcode, ok := result["errcode"].(float64); ok && errcode != 0 {
		errmsg, _ := result["errmsg"].(string)
		FailInternal(c, fmt.Sprintf("企业微信返回错误: %v - %s", errcode, errmsg))
		return
	}

	SuccessMsg(c, "测试消息发送成功！请检查企业微信群")
}