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/terms/pkg/domain"
	"gitlab.fjmaimaimai.com/mmm-go-pp/terms/pkg/infrastructure/pg/models"
	"gitlab.fjmaimaimai.com/mmm-go-pp/terms/pkg/infrastructure/pg/transform"
)

type MenuRepository struct {
	transactionContext *pgTransaction.TransactionContext
}

func (repository *MenuRepository) nextIdentify() (int64, error) {
	IdWorker, err := snowflake.NewIdWorker(1)
	if err != nil {
		return 0, err
	}
	id, err := IdWorker.NextId()
	return id, err
}
func (repository *MenuRepository) Save(menu *domain.Menu) (*domain.Menu, error) {
	sqlBuildFields := []string{
		"menu_id",
		"parent_id",
		"menu_name",
		"code",
		"access_code",
		"menu_type",
		"icon",
		"sort",
		"remark",
		"category",
		"parent_path",
		"is_publish",
		"is_system",
	}
	insertFieldsSnippet := sqlbuilder.SqlFieldsSnippet(sqlbuilder.RemoveSqlFields(sqlBuildFields, "menu_id"))
	insertPlaceHoldersSnippet := sqlbuilder.SqlPlaceHoldersSnippet(sqlbuilder.RemoveSqlFields(sqlBuildFields, "menu_id"))
	returningFieldsSnippet := sqlbuilder.SqlFieldsSnippet(sqlBuildFields)
	updateFields := sqlbuilder.RemoveSqlFields(sqlBuildFields, "menu_id")
	updateFieldsSnippet := sqlbuilder.SqlUpdateFieldsSnippet(updateFields)
	tx := repository.transactionContext.PgTx
	if menu.Identify() == nil {
		menuId, err := repository.nextIdentify()
		if err != nil {
			return menu, err
		} else {
			menu.MenuId = menuId
		}
		if _, err := tx.QueryOne(
			pg.Scan(
				&menu.MenuId,
				&menu.ParentId,
				&menu.MenuName,
				&menu.Code,
				&menu.AccessCode,
				&menu.MenuType,
				&menu.Icon,
				&menu.Sort,
				&menu.Remark,
				&menu.Category,
				&menu.ParentPath,
				&menu.IsPublish,
				&menu.IsSystem,
			),
			fmt.Sprintf("INSERT INTO base.menu (%s) VALUES (%s) RETURNING %s", insertFieldsSnippet, insertPlaceHoldersSnippet, returningFieldsSnippet),
			menu.ParentId,
			menu.MenuName,
			menu.Code,
			menu.AccessCode,
			menu.MenuType,
			menu.Icon,
			menu.Sort,
			menu.Remark,
			menu.Category,
			menu.ParentPath,
			menu.IsPublish,
			menu.IsSystem,
		); err != nil {
			return menu, err
		}
	} else {
		if _, err := tx.QueryOne(
			pg.Scan(
				&menu.MenuId,
				&menu.ParentId,
				&menu.MenuName,
				&menu.Code,
				&menu.AccessCode,
				&menu.MenuType,
				&menu.Icon,
				&menu.Sort,
				&menu.Remark,
				&menu.Category,
				&menu.ParentPath,
				&menu.IsPublish,
				&menu.IsSystem,
			),
			fmt.Sprintf("UPDATE base.menu SET %s WHERE menu_id=? RETURNING %s", updateFieldsSnippet, returningFieldsSnippet),
			menu.MenuId,
			menu.ParentId,
			menu.MenuName,
			menu.Code,
			menu.AccessCode,
			menu.MenuType,
			menu.Icon,
			menu.Sort,
			menu.Remark,
			menu.Category,
			menu.ParentPath,
			menu.IsPublish,
			menu.IsSystem,
			menu.Identify(),
		); err != nil {
			return menu, err
		}
	}
	return menu, nil
}
func (repository *MenuRepository) Remove(menu *domain.Menu) (*domain.Menu, error) {
	tx := repository.transactionContext.PgTx
	menuModel := new(models.Menu)
	menuModel.MenuId = menu.Identify().(int64)
	if _, err := tx.Model(menuModel).WherePK().Delete(); err != nil {
		return menu, err
	}
	return menu, nil
}
func (repository *MenuRepository) FindOne(queryOptions map[string]interface{}) (*domain.Menu, error) {
	tx := repository.transactionContext.PgTx
	menuModel := new(models.Menu)
	query := sqlbuilder.BuildQuery(tx.Model(menuModel), queryOptions)
	query.SetWhereByQueryOption("menu.menu_id = ?", "menuId")
	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 menuModel.MenuId == 0 {
		return nil, nil
	} else {
		return transform.TransformToMenuDomainModelFromPgModels(menuModel)
	}
}
func (repository *MenuRepository) Find(queryOptions map[string]interface{}) (int64, []*domain.Menu, error) {
	tx := repository.transactionContext.PgTx
	var menuModels []*models.Menu
	menus := make([]*domain.Menu, 0)
	query := sqlbuilder.BuildQuery(tx.Model(&menuModels), queryOptions)
	query.SetOffsetAndLimit(20)
	query.SetOrderDirect("menu_id", "DESC")
	if count, err := query.SelectAndCount(); err != nil {
		return 0, menus, err
	} else {
		for _, menuModel := range menuModels {
			if menu, err := transform.TransformToMenuDomainModelFromPgModels(menuModel); err != nil {
				return 0, menus, err
			} else {
				menus = append(menus, menu)
			}
		}
		return int64(count), menus, nil
	}
}
func NewMenuRepository(transactionContext *pgTransaction.TransactionContext) (*MenuRepository, error) {
	if transactionContext == nil {
		return nil, fmt.Errorf("transactionContext参数不能为nil")
	} else {
		return &MenuRepository{
			transactionContext: transactionContext,
		}, nil
	}
}