package dao

import (
	"context"
	"time"

	"gitea.com/red-future/common/db/gfdb"
	"github.com/gogf/gf/v2/database/gdb"
	"github.com/gogf/gf/v2/frame/g"
	"github.com/gogf/gf/v2/util/gconv"

	knapsackConsts "shop-user-trade/consts/knapsack"
	"shop-user-trade/consts/public"
	knapsackDto "shop-user-trade/model/dto/knapsack"
	knapsackEntity "shop-user-trade/model/entity/knapsack"
)

var Knapsack = new(knapsackDao)

type knapsackDao struct{}

// Insert 插入背包项
func (d *knapsackDao) Insert(ctx context.Context, req *knapsackDto.CreateKnapsackReq) (id int64, err error) {
	var entity *knapsackEntity.Knapsack
	if err = gconv.Struct(req, &entity); err != nil {
		return
	}
	entity.Status = knapsackConsts.KnapsackStatusActive
	r, err := gfdb.DB(ctx).Model(ctx, public.TableNameKnapsack).Data(entity).Insert()
	if err != nil {
		return
	}
	return r.LastInsertId()
}

// Update 更新背包项
func (d *knapsackDao) Update(ctx context.Context, req *knapsackDto.UpdateKnapsackReq) (rows int64, err error) {
	r, err := gfdb.DB(ctx).Model(ctx, public.TableNameKnapsack).
		Data(req).
		Where(knapsackEntity.KnapsackCol.Id, req.Id).
		OmitEmpty().
		Update()
	if err != nil {
		return
	}
	return r.RowsAffected()
}

// Delete 删除背包项（软删除）
func (d *knapsackDao) Delete(ctx context.Context, req *knapsackDto.DeleteKnapsackReq) (rows int64, err error) {
	r, err := gfdb.DB(ctx).Model(ctx, public.TableNameKnapsack).
		Where(knapsackEntity.KnapsackCol.Id, req.Id).
		Delete()
	if err != nil {
		return
	}
	return r.RowsAffected()
}

// GetOne 获取单个背包项
func (d *knapsackDao) GetOne(ctx context.Context, req *knapsackDto.GetKnapsackReq) (res *knapsackEntity.Knapsack, err error) {
	r, err := gfdb.DB(ctx).Model(ctx, public.TableNameKnapsack).
		Where(knapsackEntity.KnapsackCol.Id, req.Id).
		One()
	if err != nil {
		return
	}
	err = r.Struct(&res)
	return
}

// GetByID 根据ID获取背包项
func (d *knapsackDao) GetByID(ctx context.Context, id int64) (res *knapsackEntity.Knapsack, err error) {
	r, err := gfdb.DB(ctx).Model(ctx, public.TableNameKnapsack).
		Where(knapsackEntity.KnapsackCol.Id, id).
		One()
	if err != nil {
		return
	}
	err = r.Struct(&res)
	return
}

// Count 获取背包数量
func (d *knapsackDao) Count(ctx context.Context, req *knapsackDto.ListKnapsackReq) (count int, err error) {
	return d.buildListFilter(ctx, req).Count()
}

// List 获取背包列表
func (d *knapsackDao) List(ctx context.Context, req *knapsackDto.ListKnapsackReq) (res []knapsackEntity.Knapsack, total int, err error) {
	model := d.buildListFilter(ctx, req).OrderDesc(knapsackEntity.KnapsackCol.CreatedAt)
	if req.Page != nil {
		model.Page(int(req.Page.PageNum), int(req.Page.PageSize))
	}
	r, total, err := model.AllAndCount(false)
	if err != nil {
		return
	}
	err = r.Structs(&res)
	return
}

// ListExpired 获取过期背包项列表
func (d *knapsackDao) ListExpired(ctx context.Context) (res []knapsackEntity.Knapsack, err error) {
	now := time.Now().Unix()
	r, err := gfdb.DB(ctx).Model(ctx, public.TableNameKnapsack).
		WhereIn(knapsackEntity.KnapsackCol.Status, []knapsackConsts.KnapsackStatus{
			knapsackConsts.KnapsackStatusActive,
			knapsackConsts.KnapsackStatusListed,
		}).
		WhereLT(knapsackEntity.KnapsackCol.ExpireAt, now).
		WhereNotNull(knapsackEntity.KnapsackCol.ExpireAt).
		All()
	if err != nil {
		return
	}
	err = r.Structs(&res)
	return
}

// buildListFilter 构建列表查询过滤条件
func (d *knapsackDao) buildListFilter(ctx context.Context, req *knapsackDto.ListKnapsackReq) *gdb.Model {
	model := gfdb.DB(ctx).Model(ctx, public.TableNameKnapsack).OmitEmpty()
	if !g.IsEmpty(req.UserID) {
		model = model.Where(knapsackEntity.KnapsackCol.UserID, req.UserID)
	}
	if req.Status != nil {
		model = model.Where(knapsackEntity.KnapsackCol.Status, *req.Status)
	}
	if !g.IsEmpty(req.Type) {
		model = model.Where(knapsackEntity.KnapsackCol.Type, req.Type)
	}
	if !g.IsEmpty(req.Keyword) {
		model = model.WhereLike(knapsackEntity.KnapsackCol.AssetName, "%"+req.Keyword+"%")
	}
	return model
}