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-gateway/pkg/domain"
	"gitlab.fjmaimaimai.com/mmm-go-pp/partner01-gateway/pkg/infrastructure/pg/models"
	"gitlab.fjmaimaimai.com/mmm-go-pp/partner01-gateway/pkg/infrastructure/pg/transform"
)

type PermissionRepository struct {
	transactionContext *pgTransaction.TransactionContext
}

func (repository *PermissionRepository) nextIdentify() (int64, error) {
	IdWorker, err := snowflake.NewIdWorker(1)
	if err != nil {
		return 0, err
	}
	id, err := IdWorker.NextId()
	return id, err
}
func (repository *PermissionRepository) Save(permission *domain.Permission) (*domain.Permission, error) {
	sqlBuildFields := []string{
		"permission_id",
		"name",
		"code",
		"parent_id",
		"sort",
		"icon",
	}
	insertFieldsSnippet := sqlbuilder.SqlFieldsSnippet(sqlBuildFields)
	insertPlaceHoldersSnippet := sqlbuilder.SqlPlaceHoldersSnippet(sqlBuildFields)
	returningFieldsSnippet := sqlbuilder.SqlFieldsSnippet(sqlBuildFields)
	updateFields := sqlbuilder.RemoveSqlFields(sqlBuildFields, "permission_id")
	updateFieldsSnippet := sqlbuilder.SqlUpdateFieldsSnippet(updateFields)
	tx := repository.transactionContext.PgTx
	if permission.Identify() == nil {
		permissionId, err := repository.nextIdentify()
		if err != nil {
			return permission, err
		} else {
			permission.PermissionId = int(permissionId)
		}
		if _, err := tx.QueryOne(
			pg.Scan(
				&permission.PermissionId,
				&permission.Name,
				&permission.Code,
				&permission.ParentId,
				&permission.Sort,
				&permission.Icon,
			),
			fmt.Sprintf("INSERT INTO permissions (%s) VALUES (%s) RETURNING %s", insertFieldsSnippet, insertPlaceHoldersSnippet, returningFieldsSnippet),
			permission.PermissionId,
			permission.Name,
			permission.Code,
			permission.ParentId,
			permission.Sort,
			permission.Icon,
		); err != nil {
			return permission, err
		}
	} else {
		if _, err := tx.QueryOne(
			pg.Scan(
				&permission.PermissionId,
				&permission.Name,
				&permission.Code,
				&permission.ParentId,
				&permission.Sort,
				&permission.Icon,
			),
			fmt.Sprintf("UPDATE permissions SET %s WHERE permission_id=? RETURNING %s", updateFieldsSnippet, returningFieldsSnippet),
			permission.PermissionId,
			permission.Name,
			permission.Code,
			permission.ParentId,
			permission.Sort,
			permission.Icon,
			permission.Identify(),
		); err != nil {
			return permission, err
		}
	}
	return permission, nil
}
func (repository *PermissionRepository) Remove(permission *domain.Permission) (*domain.Permission, error) {
	tx := repository.transactionContext.PgTx
	permissionModel := new(models.Permission)
	permissionModel.PermissionId = permission.Identify().(int)
	if _, err := tx.Model(permissionModel).WherePK().Delete(); err != nil {
		return permission, err
	}
	return permission, nil
}
func (repository *PermissionRepository) FindOne(queryOptions map[string]interface{}) (*domain.Permission, error) {
	tx := repository.transactionContext.PgTx
	permissionModel := new(models.Permission)
	query := sqlbuilder.BuildQuery(tx.Model(permissionModel), queryOptions)
	query.SetWhereByQueryOption("permission.permission_id = ?", "permissionId")
	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 permissionModel.PermissionId == 0 {
		return nil, nil
	} else {
		return transform.TransformToPermissionDomainModelFromPgModels(permissionModel)
	}
}
func (repository *PermissionRepository) Find(queryOptions map[string]interface{}) (int64, []*domain.Permission, error) {
	tx := repository.transactionContext.PgTx
	var permissionModels []*models.Permission
	permissions := make([]*domain.Permission, 0)
	query := sqlbuilder.BuildQuery(tx.Model(&permissionModels), queryOptions)
	query.SetOffsetAndLimit(20)
	query.SetOrderDirect("permission_id", "DESC")
	if count, err := query.SelectAndCount(); err != nil {
		return 0, permissions, err
	} else {
		for _, permissionModel := range permissionModels {
			if permission, err := transform.TransformToPermissionDomainModelFromPgModels(permissionModel); err != nil {
				return 0, permissions, err
			} else {
				permissions = append(permissions, permission)
			}
		}
		return int64(count), permissions, nil
	}
}
func NewPermissionRepository(transactionContext *pgTransaction.TransactionContext) (*PermissionRepository, error) {
	if transactionContext == nil {
		return nil, fmt.Errorf("transactionContext参数不能为nil")
	} else {
		return &PermissionRepository{
			transactionContext: transactionContext,
		}, nil
	}
}