package handler

import (
	"net/http"

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

	"github.com/wangjia/jiu/backend/internal/middleware"
	"github.com/wangjia/jiu/backend/internal/model"
	"github.com/wangjia/jiu/backend/internal/util"
)

// ProductAttrHandler 处理商品属性字典（产地/保质期/储存方式/描述文档）
type ProductAttrHandler struct {
	db *gorm.DB
}

func NewProductAttrHandler(db *gorm.DB) *ProductAttrHandler {
	return &ProductAttrHandler{db: db}
}

// ── 产地（origins） ──────────────────────────────────────────────

func (h *ProductAttrHandler) ListOrigins(c *gin.Context) {
	shopID := middleware.GetShopID(c)
	items := make([]model.ProductOriginOption, 0)
	h.db.Where("shop_id = ?", shopID).Order("id ASC").Find(&items)
	util.RespondSuccess(c, items)
}

func (h *ProductAttrHandler) CreateOrigin(c *gin.Context) {
	shopID := middleware.GetShopID(c)
	var req struct {
		Code   string `json:"code"`
		Name   string `json:"name" binding:"required"`
		Remark string `json:"remark"`
	}
	if err := c.ShouldBindJSON(&req); err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
		return
	}
	item := model.ProductOriginOption{
		TenantBase: model.TenantBase{ShopID: shopID},
		Code:       req.Code,
		Name:       req.Name,
		Remark:     req.Remark,
	}
	if err := h.db.Create(&item).Error; err != nil {
		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
		return
	}
	util.RespondCreated(c, item)
}

func (h *ProductAttrHandler) UpdateOrigin(c *gin.Context) {
	shopID := middleware.GetShopID(c)
	var req struct {
		Code   string `json:"code"`
		Name   string `json:"name" binding:"required"`
		Remark string `json:"remark"`
	}
	if err := c.ShouldBindJSON(&req); err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
		return
	}
	var item model.ProductOriginOption
	if err := h.db.Where("id = ? AND shop_id = ?", c.Param("id"), shopID).First(&item).Error; err != nil {
		c.JSON(http.StatusNotFound, gin.H{"error": "not found"})
		return
	}
	h.db.Model(&item).Where("shop_id = ?", shopID).Updates(map[string]interface{}{
		"code": req.Code, "name": req.Name, "remark": req.Remark,
	})
	util.RespondSuccess(c, item)
}

func (h *ProductAttrHandler) DeleteOrigin(c *gin.Context) {
	shopID := middleware.GetShopID(c)
	h.db.Where("id = ? AND shop_id = ?", c.Param("id"), shopID).Delete(&model.ProductOriginOption{})
	c.JSON(http.StatusOK, gin.H{"message": "deleted"})
}

// ── 保质期（shelf-lives） ─────────────────────────────────────────

func (h *ProductAttrHandler) ListShelfLives(c *gin.Context) {
	shopID := middleware.GetShopID(c)
	items := make([]model.ProductShelfLifeOption, 0)
	h.db.Where("shop_id = ?", shopID).Order("id ASC").Find(&items)
	util.RespondSuccess(c, items)
}

func (h *ProductAttrHandler) CreateShelfLife(c *gin.Context) {
	shopID := middleware.GetShopID(c)
	var req struct {
		Code   string `json:"code"`
		Name   string `json:"name" binding:"required"`
		Remark string `json:"remark"`
	}
	if err := c.ShouldBindJSON(&req); err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
		return
	}
	item := model.ProductShelfLifeOption{
		TenantBase: model.TenantBase{ShopID: shopID},
		Code:       req.Code,
		Name:       req.Name,
		Remark:     req.Remark,
	}
	if err := h.db.Create(&item).Error; err != nil {
		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
		return
	}
	util.RespondCreated(c, item)
}

func (h *ProductAttrHandler) UpdateShelfLife(c *gin.Context) {
	shopID := middleware.GetShopID(c)
	var req struct {
		Code   string `json:"code"`
		Name   string `json:"name" binding:"required"`
		Remark string `json:"remark"`
	}
	if err := c.ShouldBindJSON(&req); err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
		return
	}
	var item model.ProductShelfLifeOption
	if err := h.db.Where("id = ? AND shop_id = ?", c.Param("id"), shopID).First(&item).Error; err != nil {
		c.JSON(http.StatusNotFound, gin.H{"error": "not found"})
		return
	}
	h.db.Model(&item).Where("shop_id = ?", shopID).Updates(map[string]interface{}{
		"code": req.Code, "name": req.Name, "remark": req.Remark,
	})
	util.RespondSuccess(c, item)
}

func (h *ProductAttrHandler) DeleteShelfLife(c *gin.Context) {
	shopID := middleware.GetShopID(c)
	h.db.Where("id = ? AND shop_id = ?", c.Param("id"), shopID).Delete(&model.ProductShelfLifeOption{})
	c.JSON(http.StatusOK, gin.H{"message": "deleted"})
}

// ── 储存方式（storages） ──────────────────────────────────────────

func (h *ProductAttrHandler) ListStorages(c *gin.Context) {
	shopID := middleware.GetShopID(c)
	items := make([]model.ProductStorageOption, 0)
	h.db.Where("shop_id = ?", shopID).Order("id ASC").Find(&items)
	util.RespondSuccess(c, items)
}

func (h *ProductAttrHandler) CreateStorage(c *gin.Context) {
	shopID := middleware.GetShopID(c)
	var req struct {
		Code   string `json:"code"`
		Name   string `json:"name" binding:"required"`
		Remark string `json:"remark"`
	}
	if err := c.ShouldBindJSON(&req); err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
		return
	}
	item := model.ProductStorageOption{
		TenantBase: model.TenantBase{ShopID: shopID},
		Code:       req.Code,
		Name:       req.Name,
		Remark:     req.Remark,
	}
	if err := h.db.Create(&item).Error; err != nil {
		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
		return
	}
	util.RespondCreated(c, item)
}

func (h *ProductAttrHandler) UpdateStorage(c *gin.Context) {
	shopID := middleware.GetShopID(c)
	var req struct {
		Code   string `json:"code"`
		Name   string `json:"name" binding:"required"`
		Remark string `json:"remark"`
	}
	if err := c.ShouldBindJSON(&req); err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
		return
	}
	var item model.ProductStorageOption
	if err := h.db.Where("id = ? AND shop_id = ?", c.Param("id"), shopID).First(&item).Error; err != nil {
		c.JSON(http.StatusNotFound, gin.H{"error": "not found"})
		return
	}
	h.db.Model(&item).Where("shop_id = ?", shopID).Updates(map[string]interface{}{
		"code": req.Code, "name": req.Name, "remark": req.Remark,
	})
	util.RespondSuccess(c, item)
}

func (h *ProductAttrHandler) DeleteStorage(c *gin.Context) {
	shopID := middleware.GetShopID(c)
	h.db.Where("id = ? AND shop_id = ?", c.Param("id"), shopID).Delete(&model.ProductStorageOption{})
	c.JSON(http.StatusOK, gin.H{"message": "deleted"})
}

// ── 描述文档（description-docs） ─────────────────────────────────

func (h *ProductAttrHandler) ListDescriptionDocs(c *gin.Context) {
	shopID := middleware.GetShopID(c)
	items := make([]model.ProductDescriptionDoc, 0)
	h.db.Where("shop_id = ?", shopID).Order("id ASC").Find(&items)
	util.RespondSuccess(c, items)
}

func (h *ProductAttrHandler) CreateDescriptionDoc(c *gin.Context) {
	shopID := middleware.GetShopID(c)
	var req struct {
		Title   string `json:"title" binding:"required"`
		Content string `json:"content"`
		Remark  string `json:"remark"`
	}
	if err := c.ShouldBindJSON(&req); err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
		return
	}
	item := model.ProductDescriptionDoc{
		TenantBase: model.TenantBase{ShopID: shopID},
		Title:      req.Title,
		Content:    req.Content,
		Remark:     req.Remark,
	}
	if err := h.db.Create(&item).Error; err != nil {
		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
		return
	}
	util.RespondCreated(c, item)
}

func (h *ProductAttrHandler) UpdateDescriptionDoc(c *gin.Context) {
	shopID := middleware.GetShopID(c)
	var req struct {
		Title   string `json:"title" binding:"required"`
		Content string `json:"content"`
		Remark  string `json:"remark"`
	}
	if err := c.ShouldBindJSON(&req); err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
		return
	}
	var item model.ProductDescriptionDoc
	if err := h.db.Where("id = ? AND shop_id = ?", c.Param("id"), shopID).First(&item).Error; err != nil {
		c.JSON(http.StatusNotFound, gin.H{"error": "not found"})
		return
	}
	h.db.Model(&item).Where("shop_id = ?", shopID).Updates(map[string]interface{}{
		"title": req.Title, "content": req.Content, "remark": req.Remark,
	})
	util.RespondSuccess(c, item)
}

func (h *ProductAttrHandler) DeleteDescriptionDoc(c *gin.Context) {
	shopID := middleware.GetShopID(c)
	h.db.Where("id = ? AND shop_id = ?", c.Param("id"), shopID).Delete(&model.ProductDescriptionDoc{})
	c.JSON(http.StatusOK, gin.H{"message": "deleted"})
}