package repository

import (
	"fmt"

	"github.com/go-pg/pg"
	pgTransaction "github.com/linmadan/egglib-go/transaction/pg"
	"github.com/tiptok/godevp/pkg/domain/role"
	domain "github.com/tiptok/godevp/pkg/domain/role"
	"github.com/tiptok/godevp/pkg/infrastructure/pg/models"
)

type RoleRepository struct {
	transactionContext *pgTransaction.TransactionContext
}

func (repository *RoleRepository) nextIdentify() (int64, error) {
	return 0, nil
}
func (repository *RoleRepository) Save(role *role.Role) (*role.Role, error) {
	tx := repository.transactionContext.PgTx
	if role.Identify() == nil {
		_, err := repository.nextIdentify()
		if err != nil {
			return role, err
		}
		if _, err := tx.QueryOne(
			pg.Scan(&role.Id, &role.RoleName, &role.ParentId, &role.CreateTime, &role.UpdateTime),
			"INSERT INTO roles (id, role_name, parent_id, create_time, update_time) VALUES (?, ?, ?, ?, ?) RETURNING id, role_name, parent_id, create_time, update_time",
			role.Id, role.RoleName, role.ParentId, role.CreateTime, role.UpdateTime); err != nil {
			return role, err
		}
	} else {
		if _, err := tx.QueryOne(
			pg.Scan(&role.Id, &role.RoleName, &role.ParentId, &role.CreateTime, &role.UpdateTime),
			"UPDATE roles SET id=?, role_name=?, parent_id=?, create_time=?, update_time=? WHERE id=? RETURNING id, role_name, parent_id, create_time, update_time",
			role.Id, role.RoleName, role.ParentId, role.CreateTime, role.UpdateTime, role.Identify()); err != nil {
			return role, err
		}
	}
	return role, nil
}
func (repository *RoleRepository) Remove(role *role.Role) (*role.Role, error) {
	tx := repository.transactionContext.PgTx
	roleModel := new(models.Role)
	roleModel.Id = role.Identify().(int64)
	if _, err := tx.Model(roleModel).WherePK().Delete(); err != nil {
		return role, err
	}
	return role, nil
}
func (repository *RoleRepository) FindOne(queryOptions map[string]interface{}) (*role.Role, error) {
	tx := repository.transactionContext.PgTx
	roleModel := new(models.Role)
	query := tx.Model(roleModel)
	if roleId, ok := queryOptions["roleId"]; ok {
		query = query.Where("role.id = ?", roleId)
	}
	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 roleModel.Id == 0 {
		return nil, nil
	} else {
		return repository.transformPgModelToDomainModel(roleModel)
	}
}
func (repository *RoleRepository) Find(queryOptions map[string]interface{}) (int64, []*role.Role, error) {
	tx := repository.transactionContext.PgTx
	var roleModels []*models.Role
	roles := make([]*role.Role, 0)
	query := tx.Model(&roleModels)
	if offset, ok := queryOptions["offset"]; ok {
		offset := offset.(int)
		if offset > -1 {
			query = query.Offset(offset)
		}
	} else {
		query = query.Offset(0)
	}
	if limit, ok := queryOptions["limit"]; ok {
		limit := limit.(int)
		if limit > -1 {
			query = query.Limit(limit)
		}
	} else {
		query = query.Limit(20)
	}
	if count, err := query.Order("id DESC").SelectAndCount(); err != nil {
		return 0, roles, err
	} else {
		for _, roleModel := range roleModels {
			if role, err := repository.transformPgModelToDomainModel(roleModel); err != nil {
				return 0, roles, err
			} else {
				roles = append(roles, role)
			}
		}
		return int64(count), roles, nil
	}
}
func (repository *RoleRepository) transformPgModelToDomainModel(roleModel *models.Role) (*domain.Role, error) {
	return &role.Role{
		Id:         roleModel.Id,
		RoleName:   roleModel.RoleName,
		ParentId:   roleModel.ParentId,
		CreateTime: roleModel.CreateTime,
		UpdateTime: roleModel.UpdateTime,
	}, nil
}
func NewRoleRepository(transactionContext *pgTransaction.TransactionContext) (*RoleRepository, error) {
	if transactionContext == nil {
		return nil, fmt.Errorf("transactionContext参数不能为nil")
	} else {
		return &RoleRepository{
			transactionContext: transactionContext,
		}, nil
	}
}