package plan

import (
	planservice "backend/internal/service/plan"
	"backend/utils"
	"net/http"
	"strconv"

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

// PlanController 定价计划控制器 // Logan.Li
type PlanController struct {
	svc *planservice.PlanService
	db  *gorm.DB
}

// NewPlanController 创建控制器实例 // Logan.Li
func NewPlanController(db *gorm.DB) *PlanController {
	return &PlanController{svc: planservice.NewPlanService(db), db: db}
}

// List 计划列表 // Logan.Li
func (ctrl *PlanController) List(c *gin.Context) {
	page, _ := strconv.Atoi(c.DefaultQuery("page", "1"))
	pageSize, _ := strconv.Atoi(c.DefaultQuery("page_size", "10"))
	productID, _ := strconv.ParseUint(c.Query("product_id"), 10, 32)

	plans, total, err := ctrl.svc.List(page, pageSize, uint(productID))
	if err != nil {
		c.JSON(http.StatusInternalServerError, gin.H{"code": 500, "message": err.Error()})
		return
	}
	c.JSON(http.StatusOK, gin.H{"code": 0, "data": gin.H{
		"list": plans, "total": total, "page": page, "page_size": pageSize,
		"total_pages": (total + int64(pageSize) - 1) / int64(pageSize),
	}})
}

// GetByProduct 查询某产品的上架计划（公开接口） // Logan.Li
func (ctrl *PlanController) GetByProduct(c *gin.Context) {
	productID, _ := strconv.ParseUint(c.Param("product_id"), 10, 32)
	plans, err := ctrl.svc.GetByProduct(uint(productID))
	if err != nil {
		c.JSON(http.StatusOK, gin.H{"code": 1, "message": err.Error()})
		return
	}
	c.JSON(http.StatusOK, gin.H{"code": 0, "data": plans})
}

// Create 创建计划 // Logan.Li
func (ctrl *PlanController) Create(c *gin.Context) {
	var req struct {
		ProductID  uint     `json:"product_id" binding:"required"`
		Name       string   `json:"name" binding:"required"`
		PlanType   string   `json:"plan_type" binding:"required"`
		Price      float64  `json:"price" binding:"required"`
		Currency   string   `json:"currency"`
		Duration   int      `json:"duration"`
		MaxDevices int      `json:"max_devices"`
		Features   []string `json:"features"`
		SortOrder  int      `json:"sort_order"`
		Status     *int     `json:"status"`
	}
	if err := c.ShouldBindJSON(&req); err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"code": 400, "message": "参数错误: " + err.Error()})
		return
	}
	plan, err := ctrl.svc.Create(req)
	if err != nil {
		c.JSON(http.StatusOK, gin.H{"code": 1, "message": err.Error()})
		return
	}
	utils.LogAction(ctrl.db, c, "create", "plan", plan.ID, plan.Name, "", "", "创建定价计划")
	c.JSON(http.StatusOK, gin.H{"code": 0, "message": "创建成功", "data": plan})
}

// Update 更新计划 // Logan.Li
func (ctrl *PlanController) Update(c *gin.Context) {
	id, _ := strconv.ParseUint(c.Param("id"), 10, 32)
	var req struct {
		Name       string   `json:"name"`
		Price      *float64 `json:"price"`
		Currency   string   `json:"currency"`
		Duration   *int     `json:"duration"`
		MaxDevices *int     `json:"max_devices"`
		Features   []string `json:"features"`
		SortOrder  *int     `json:"sort_order"`
		Status     *int     `json:"status"`
	}
	if err := c.ShouldBindJSON(&req); err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"code": 400, "message": "参数错误"})
		return
	}
	plan, err := ctrl.svc.Update(uint(id), req)
	if err != nil {
		c.JSON(http.StatusOK, gin.H{"code": 1, "message": err.Error()})
		return
	}
	utils.LogAction(ctrl.db, c, "update", "plan", plan.ID, plan.Name, "", "", "更新定价计划")
	c.JSON(http.StatusOK, gin.H{"code": 0, "message": "更新成功", "data": plan})
}

// Delete 删除计划 // Logan.Li
func (ctrl *PlanController) Delete(c *gin.Context) {
	id, _ := strconv.ParseUint(c.Param("id"), 10, 32)
	if err := ctrl.svc.Delete(uint(id)); err != nil {
		c.JSON(http.StatusOK, gin.H{"code": 1, "message": err.Error()})
		return
	}
	utils.LogAction(ctrl.db, c, "delete", "plan", uint(id), "", "", "", "删除定价计划")
	c.JSON(http.StatusOK, gin.H{"code": 0, "message": "删除成功"})
}

// ToggleStatus 切换上下架 // Logan.Li
func (ctrl *PlanController) ToggleStatus(c *gin.Context) {
	id, _ := strconv.ParseUint(c.Param("id"), 10, 32)
	var req struct {
		Status int `json:"status"`
	}
	c.ShouldBindJSON(&req)
	if err := ctrl.svc.ToggleStatus(uint(id), req.Status); err != nil {
		c.JSON(http.StatusOK, gin.H{"code": 1, "message": err.Error()})
		return
	}
	utils.LogAction(ctrl.db, c, "toggle_status", "plan", uint(id), "", "", "", "切换计划状态")
	c.JSON(http.StatusOK, gin.H{"code": 0, "message": "状态更新成功"})
}