package handlers

import (
	"net/http"
	"strconv"

	"ezops/internal/models"

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

// 通知渠道 CRUD（AlertHandler 方法接收者，与 alert.go 同包共享） // Logan.Li

// ListNotifyChannels 获取通知渠道列表 // Logan.Li
// @Summary 获取通知渠道列表
// @Description 获取所有通知渠道列表
// @Tags 告警
// @Produce json
// @Security Bearer
// @Success 200 {object} models.Response{data=models.ListResponse}
// @Router /alerts/notify-channels [get]
func (h *AlertHandler) ListNotifyChannels(c *gin.Context) {
	var channels []models.NotifyChannel
	h.db.Order("created_at DESC").Find(&channels)

	c.JSON(http.StatusOK, models.Response{
		Code:    200,
		Message: "success",
		Data: models.ListResponse{
			List:  channels,
			Total: int64(len(channels)),
		},
	})
}

// CreateNotifyChannel 创建通知渠道 // Logan.Li
// @Summary 创建通知渠道
// @Description 创建新通知渠道
// @Tags 告警
// @Accept json
// @Produce json
// @Security Bearer
// @Param request body models.CreateNotifyChannelRequest true "创建请求"
// @Success 200 {object} models.Response{data=models.NotifyChannel}
// @Router /alerts/notify-channels [post]
func (h *AlertHandler) CreateNotifyChannel(c *gin.Context) {
	var req models.CreateNotifyChannelRequest
	if err := c.ShouldBindJSON(&req); err != nil {
		c.JSON(http.StatusBadRequest, models.Response{
			Code:    400,
			Message: "请求参数错误: " + err.Error(),
		})
		return
	}

	channel := models.NotifyChannel{
		Name:    req.Name,
		Type:    req.Type,
		Config:  req.Config,
		Enabled: true,
	}

	if err := h.db.Create(&channel).Error; err != nil {
		c.JSON(http.StatusInternalServerError, models.Response{
			Code:    500,
			Message: "创建失败",
		})
		return
	}

	c.JSON(http.StatusOK, models.Response{
		Code:    200,
		Message: "创建成功",
		Data:    channel,
	})
}

// UpdateNotifyChannel 更新通知渠道 // Logan.Li
// @Summary 更新通知渠道
// @Description 更新指定通知渠道
// @Tags 告警
// @Accept json
// @Produce json
// @Security Bearer
// @Param id path int true "渠道ID"
// @Param request body models.UpdateNotifyChannelRequest true "更新请求"
// @Success 200 {object} models.Response{data=models.NotifyChannel}
// @Router /alerts/notify-channels/{id} [put]
func (h *AlertHandler) UpdateNotifyChannel(c *gin.Context) {
	id, _ := strconv.Atoi(c.Param("id"))

	var req models.UpdateNotifyChannelRequest
	if err := c.ShouldBindJSON(&req); err != nil {
		c.JSON(http.StatusBadRequest, models.Response{
			Code:    400,
			Message: "请求参数错误: " + err.Error(),
		})
		return
	}

	var channel models.NotifyChannel
	if err := h.db.First(&channel, id).Error; err != nil {
		c.JSON(http.StatusNotFound, models.Response{
			Code:    404,
			Message: "通知渠道不存在",
		})
		return
	}

	updates := map[string]interface{}{}
	if req.Name != "" {
		updates["name"] = req.Name
	}
	if req.Type != "" {
		updates["type"] = req.Type
	}
	if req.Config != "" {
		updates["config"] = req.Config
	}
	if req.Enabled != nil {
		updates["enabled"] = *req.Enabled
	}

	if err := h.db.Model(&channel).Updates(updates).Error; err != nil {
		c.JSON(http.StatusInternalServerError, models.Response{
			Code:    500,
			Message: "更新失败",
		})
		return
	}

	h.db.First(&channel, id)
	c.JSON(http.StatusOK, models.Response{
		Code:    200,
		Message: "更新成功",
		Data:    channel,
	})
}

// DeleteNotifyChannel 删除通知渠道 // Logan.Li
// @Summary 删除通知渠道
// @Description 删除指定通知渠道
// @Tags 告警
// @Produce json
// @Security Bearer
// @Param id path int true "渠道ID"
// @Success 200 {object} models.Response
// @Router /alerts/notify-channels/{id} [delete]
func (h *AlertHandler) DeleteNotifyChannel(c *gin.Context) {
	id, _ := strconv.Atoi(c.Param("id"))

	if err := h.db.Delete(&models.NotifyChannel{}, id).Error; err != nil {
		c.JSON(http.StatusInternalServerError, models.Response{
			Code:    500,
			Message: "删除失败",
		})
		return
	}

	c.JSON(http.StatusOK, models.Response{
		Code:    200,
		Message: "删除成功",
	})
}

// TestNotifyChannel 测试通知渠道 // Logan.Li
// @Summary 测试通知渠道连通性
// @Description 模拟测试通知渠道（返回测试状态）
// @Tags 告警
// @Produce json
// @Security Bearer
// @Param id path int true "渠道ID"
// @Success 200 {object} models.Response
// @Router /alerts/notify-channels/{id}/test [post]
func (h *AlertHandler) TestNotifyChannel(c *gin.Context) {
	id, _ := strconv.Atoi(c.Param("id"))

	var channel models.NotifyChannel
	if err := h.db.First(&channel, id).Error; err != nil {
		c.JSON(http.StatusNotFound, models.Response{
			Code:    404,
			Message: "通知渠道不存在",
		})
		return
	}

	// 模拟测试：校验配置非空即视为成功
	status := "success"
	message := "测试通知已发送"
	if channel.Config == "" {
		status = "warning"
		message = "渠道未配置参数，请先完善配置"
	}

	h.db.Model(&channel).Update("test_status", status)

	c.JSON(http.StatusOK, models.Response{
		Code:    200,
		Message: message,
		Data: gin.H{
			"status":  status,
			"channel": channel.Name,
			"type":    channel.Type,
		},
	})
}