// Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
// This source code is licensed under the Apache 2.0 license found
// in the LICENSE file in the root directory of this source tree.

// Code generated (@generated) by entc, DO NOT EDIT.

package ent

import (
	"context"

	"github.com/facebookincubator/ent/dialect/sql"
	"github.com/facebookincubator/ent/entc/integration/customid/ent/user"
)

// UserCreate is the builder for creating a User entity.
type UserCreate struct {
	config
	id     *int
	groups map[int]struct{}
}

// SetID sets the id field.
func (uc *UserCreate) SetID(i int) *UserCreate {
	uc.id = &i
	return uc
}

// AddGroupIDs adds the groups edge to Group by ids.
func (uc *UserCreate) AddGroupIDs(ids ...int) *UserCreate {
	if uc.groups == nil {
		uc.groups = make(map[int]struct{})
	}
	for i := range ids {
		uc.groups[ids[i]] = struct{}{}
	}
	return uc
}

// AddGroups adds the groups edges to Group.
func (uc *UserCreate) AddGroups(g ...*Group) *UserCreate {
	ids := make([]int, len(g))
	for i := range g {
		ids[i] = g[i].ID
	}
	return uc.AddGroupIDs(ids...)
}

// Save creates the User in the database.
func (uc *UserCreate) Save(ctx context.Context) (*User, error) {
	return uc.sqlSave(ctx)
}

// SaveX calls Save and panics if Save returns an error.
func (uc *UserCreate) SaveX(ctx context.Context) *User {
	v, err := uc.Save(ctx)
	if err != nil {
		panic(err)
	}
	return v
}

func (uc *UserCreate) sqlSave(ctx context.Context) (*User, error) {
	var (
		res     sql.Result
		builder = sql.Dialect(uc.driver.Dialect())
		u       = &User{config: uc.config}
	)
	tx, err := uc.driver.Tx(ctx)
	if err != nil {
		return nil, err
	}
	insert := builder.Insert(user.Table).Default()
	if value := uc.id; value != nil {
		insert.Set(user.FieldID, *value)
		u.ID = *value
	}

	id, err := insertLastID(ctx, tx, insert.Returning(user.FieldID))
	if err != nil {
		return nil, rollback(tx, err)
	}
	u.ID = int(id)
	if len(uc.groups) > 0 {
		for eid := range uc.groups {

			query, args := builder.Insert(user.GroupsTable).
				Columns(user.GroupsPrimaryKey[1], user.GroupsPrimaryKey[0]).
				Values(id, eid).
				Query()
			if err := tx.Exec(ctx, query, args, &res); err != nil {
				return nil, rollback(tx, err)
			}
		}
	}
	if err := tx.Commit(); err != nil {
		return nil, err
	}
	return u, nil
}
