package handler

import (
	"strconv"

	"gotest/internal/model"

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

// ShowcaseHandler App 候选码 & 业务系统管理
type ShowcaseHandler struct {
	db *gorm.DB
}

func NewShowcaseHandler(db *gorm.DB) *ShowcaseHandler {
	return &ShowcaseHandler{db: db}
}

// ========== App 候选码 ==========

func (h *ShowcaseHandler) ListAppShowcase(c *gin.Context) {
	page, _ := strconv.Atoi(c.DefaultQuery("page", "1"))
	pageSize, _ := strconv.Atoi(c.DefaultQuery("page_size", "20"))
	if page < 1 {
		page = 1
	}
	if pageSize < 1 || pageSize > 100 {
		pageSize = 20
	}

	var total int64
	h.db.Model(&model.AppShowcase{}).Where("status = 1").Count(&total)

	var items []model.AppShowcase
	h.db.Where("status = 1").Order("sort ASC, id DESC").
		Offset((page - 1) * pageSize).Limit(pageSize).Find(&items)

	Success(c, gin.H{
		"list": items, "total": total, "page": page, "page_size": pageSize,
	})
}

func (h *ShowcaseHandler) AdminListAppShowcase(c *gin.Context) {
	page, _ := strconv.Atoi(c.DefaultQuery("page", "1"))
	pageSize, _ := strconv.Atoi(c.DefaultQuery("page_size", "20"))
	if page < 1 {
		page = 1
	}
	if pageSize < 1 || pageSize > 100 {
		pageSize = 20
	}

	var total int64
	h.db.Model(&model.AppShowcase{}).Count(&total)

	var items []model.AppShowcase
	h.db.Order("sort ASC, id DESC").
		Offset((page - 1) * pageSize).Limit(pageSize).Find(&items)

	Success(c, gin.H{
		"list": items, "total": total, "page": page, "page_size": pageSize,
	})
}

func (h *ShowcaseHandler) CreateAppShowcase(c *gin.Context) {
	var item model.AppShowcase
	if err := c.ShouldBindJSON(&item); err != nil {
		FailBadRequest(c, "参数错误")
		return
	}
	if err := h.db.Create(&item).Error; err != nil {
		FailInternal(c, "创建失败: "+err.Error())
		return
	}
	Success(c, item)
}

func (h *ShowcaseHandler) UpdateAppShowcase(c *gin.Context) {
	id := c.Param("id")
	var item model.AppShowcase
	if err := h.db.First(&item, id).Error; err != nil {
		Fail(c, 404, "记录不存在")
		return
	}
	if err := c.ShouldBindJSON(&item); err != nil {
		FailBadRequest(c, "参数错误")
		return
	}
	if err := h.db.Save(&item).Error; err != nil {
		FailInternal(c, "更新失败: "+err.Error())
		return
	}
	Success(c, item)
}

func (h *ShowcaseHandler) DeleteAppShowcase(c *gin.Context) {
	id := c.Param("id")
	if err := h.db.Delete(&model.AppShowcase{}, id).Error; err != nil {
		FailInternal(c, "删除失败: "+err.Error())
		return
	}
	SuccessMsg(c, "删除成功")
}

// ========== 业务系统 ==========

func (h *ShowcaseHandler) ListBizSystem(c *gin.Context) {
	page, _ := strconv.Atoi(c.DefaultQuery("page", "1"))
	pageSize, _ := strconv.Atoi(c.DefaultQuery("page_size", "20"))
	if page < 1 {
		page = 1
	}
	if pageSize < 1 || pageSize > 100 {
		pageSize = 20
	}

	var total int64
	h.db.Model(&model.BizSystem{}).Where("status = 1").Count(&total)

	var items []model.BizSystem
	h.db.Where("status = 1").Order("sort ASC, id DESC").
		Offset((page - 1) * pageSize).Limit(pageSize).Find(&items)

	Success(c, gin.H{
		"list": items, "total": total, "page": page, "page_size": pageSize,
	})
}

func (h *ShowcaseHandler) AdminListBizSystem(c *gin.Context) {
	page, _ := strconv.Atoi(c.DefaultQuery("page", "1"))
	pageSize, _ := strconv.Atoi(c.DefaultQuery("page_size", "20"))
	if page < 1 {
		page = 1
	}
	if pageSize < 1 || pageSize > 100 {
		pageSize = 20
	}

	var total int64
	h.db.Model(&model.BizSystem{}).Count(&total)

	var items []model.BizSystem
	h.db.Order("sort ASC, id DESC").
		Offset((page - 1) * pageSize).Limit(pageSize).Find(&items)

	Success(c, gin.H{
		"list": items, "total": total, "page": page, "page_size": pageSize,
	})
}

func (h *ShowcaseHandler) CreateBizSystem(c *gin.Context) {
	var item model.BizSystem
	if err := c.ShouldBindJSON(&item); err != nil {
		FailBadRequest(c, "参数错误")
		return
	}
	if err := h.db.Create(&item).Error; err != nil {
		FailInternal(c, "创建失败: "+err.Error())
		return
	}
	Success(c, item)
}

func (h *ShowcaseHandler) UpdateBizSystem(c *gin.Context) {
	id := c.Param("id")
	var item model.BizSystem
	if err := h.db.First(&item, id).Error; err != nil {
		Fail(c, 404, "记录不存在")
		return
	}
	if err := c.ShouldBindJSON(&item); err != nil {
		FailBadRequest(c, "参数错误")
		return
	}
	if err := h.db.Save(&item).Error; err != nil {
		FailInternal(c, "更新失败: "+err.Error())
		return
	}
	Success(c, item)
}

func (h *ShowcaseHandler) DeleteBizSystem(c *gin.Context) {
	id := c.Param("id")
	if err := h.db.Delete(&model.BizSystem{}, id).Error; err != nil {
		FailInternal(c, "删除失败: "+err.Error())
		return
	}
	SuccessMsg(c, "删除成功")
}