package repository

import (
	"fmt"
	"github.com/go-pg/pg/v10"

	"github.com/linmadan/egglib-go/persistent/pg/sqlbuilder"
	pgTransaction "github.com/linmadan/egglib-go/transaction/pg"
	"github.com/linmadan/egglib-go/utils/snowflake"
	"gitlab.fjmaimaimai.com/mmm-go-pp/partner01/pkg/domain"
	"gitlab.fjmaimaimai.com/mmm-go-pp/partner01/pkg/infrastructure/pg/models"
	"gitlab.fjmaimaimai.com/mmm-go-pp/partner01/pkg/infrastructure/pg/transform"
)

type GoodsRepository struct {
	transactionContext *pgTransaction.TransactionContext
}

func (repository *GoodsRepository) nextIdentify() (int64, error) {
	IdWorker, err := snowflake.NewIdWorker(1)
	if err != nil {
		return 0, err
	}
	id, err := IdWorker.NextId()
	return id, err
}
func (repository *GoodsRepository) Save(goods *domain.Goods) (*domain.Goods, error) {
	sqlBuildFields := []string{
		"goods_id",
		"goods_num",
		"goods_dividend",
		"goods_dividend_status",
		"goods_name",
		"goods_total_price",
		"remarks",
		"order_no",
		"goods_detail",
		"create_at",
		"update_at",
		"delete_at",
	}
	insertFieldsSnippet := sqlbuilder.SqlFieldsSnippet(sqlBuildFields)
	insertPlaceHoldersSnippet := sqlbuilder.SqlPlaceHoldersSnippet(sqlBuildFields)
	returningFieldsSnippet := sqlbuilder.SqlFieldsSnippet(sqlBuildFields)
	updateFields := sqlbuilder.RemoveSqlFields(sqlBuildFields, "goods_id")
	updateFieldsSnippet := sqlbuilder.SqlUpdateFieldsSnippet(updateFields)
	tx := repository.transactionContext.PgTx
	if goods.Identify() == nil {
		goodsId, err := repository.nextIdentify()
		if err != nil {
			return goods, err
		} else {
			goods.GoodsId = goodsId
		}
		if _, err := tx.QueryOne(
			pg.Scan(
				&goods.GoodsId,
				&goods.GoodsNum,
				&goods.GoodsDividend,
				&goods.GoodsDividendStatus,
				&goods.GoodsName,
				&goods.GoodsTotalPrice,
				&goods.Remarks,
				&goods.OrderNo,
				&goods.GoodsDetail,
				&goods.CreateAt,
				&goods.UpdateAt,
				&goods.DeleteAt,
			),
			fmt.Sprintf("INSERT INTO goodss (%s) VALUES (%s) RETURNING %s", insertFieldsSnippet, insertPlaceHoldersSnippet, returningFieldsSnippet),
			goods.GoodsId,
			goods.GoodsNum,
			goods.GoodsDividend,
			goods.GoodsDividendStatus,
			goods.GoodsName,
			goods.GoodsTotalPrice,
			goods.Remarks,
			goods.OrderNo,
			goods.GoodsDetail,
			goods.CreateAt,
			goods.UpdateAt,
			goods.DeleteAt,
		); err != nil {
			return goods, err
		}
	} else {
		if _, err := tx.QueryOne(
			pg.Scan(
				&goods.GoodsId,
				&goods.GoodsNum,
				&goods.GoodsDividend,
				&goods.GoodsDividendStatus,
				&goods.GoodsName,
				&goods.GoodsTotalPrice,
				&goods.Remarks,
				&goods.OrderNo,
				&goods.GoodsDetail,
				&goods.CreateAt,
				&goods.UpdateAt,
				&goods.DeleteAt,
			),
			fmt.Sprintf("UPDATE goodss SET %s WHERE goods_id=? RETURNING %s", updateFieldsSnippet, returningFieldsSnippet),
			goods.GoodsId,
			goods.GoodsNum,
			goods.GoodsDividend,
			goods.GoodsDividendStatus,
			goods.GoodsName,
			goods.GoodsTotalPrice,
			goods.Remarks,
			goods.OrderNo,
			goods.GoodsDetail,
			goods.CreateAt,
			goods.UpdateAt,
			goods.DeleteAt,
			goods.Identify(),
		); err != nil {
			return goods, err
		}
	}
	return goods, nil
}
func (repository *GoodsRepository) Remove(goods *domain.Goods) (*domain.Goods, error) {
	tx := repository.transactionContext.PgTx
	goodsModel := new(models.Goods)
	goodsModel.GoodsId = goods.Identify().(int64)
	if _, err := tx.Model(goodsModel).WherePK().Delete(); err != nil {
		return goods, err
	}
	return goods, nil
}
func (repository *GoodsRepository) FindOne(queryOptions map[string]interface{}) (*domain.Goods, error) {
	tx := repository.transactionContext.PgTx
	goodsModel := new(models.Goods)
	query := sqlbuilder.BuildQuery(tx.Model(goodsModel), queryOptions)
	query.SetWhereByQueryOption("goods.goods_id = ?", "goodsId")
	if err := query.First(); err != nil {
		if err.Error() == "pg: no rows in result set" {
			return nil, fmt.Errorf("没有此资源")
		} else {
			return nil, err
		}
	}
	if goodsModel.GoodsId == 0 {
		return nil, nil
	} else {
		return transform.TransformToGoodsDomainModelFromPgModels(goodsModel)
	}
}
func (repository *GoodsRepository) Find(queryOptions map[string]interface{}) (int64, []*domain.Goods, error) {
	tx := repository.transactionContext.PgTx
	var goodsModels []*models.Goods
	goodss := make([]*domain.Goods, 0)
	query := sqlbuilder.BuildQuery(tx.Model(&goodsModels), queryOptions)
	query.SetOffsetAndLimit(20)
	query.SetOrderDirect("goods_id", "DESC")
	if count, err := query.SelectAndCount(); err != nil {
		return 0, goodss, err
	} else {
		for _, goodsModel := range goodsModels {
			if goods, err := transform.TransformToGoodsDomainModelFromPgModels(goodsModel); err != nil {
				return 0, goodss, err
			} else {
				goodss = append(goodss, goods)
			}
		}
		return int64(count), goodss, nil
	}
}
func NewGoodsRepository(transactionContext *pgTransaction.TransactionContext) (*GoodsRepository, error) {
	if transactionContext == nil {
		return nil, fmt.Errorf("transactionContext参数不能为nil")
	} else {
		return &GoodsRepository{
			transactionContext: transactionContext,
		}, nil
	}
}