// 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 by entc, DO NOT EDIT.

package entv2

import (
	"context"
	"errors"

	"github.com/facebookincubator/ent/dialect/sql/sqlgraph"
	"github.com/facebookincubator/ent/entc/integration/migrate/entv2/car"
	"github.com/facebookincubator/ent/entc/integration/migrate/entv2/user"
	"github.com/facebookincubator/ent/schema/field"
)

// CarCreate is the builder for creating a Car entity.
type CarCreate struct {
	config
	owner map[int]struct{}
}

// SetOwnerID sets the owner edge to User by id.
func (cc *CarCreate) SetOwnerID(id int) *CarCreate {
	if cc.owner == nil {
		cc.owner = make(map[int]struct{})
	}
	cc.owner[id] = struct{}{}
	return cc
}

// SetNillableOwnerID sets the owner edge to User by id if the given value is not nil.
func (cc *CarCreate) SetNillableOwnerID(id *int) *CarCreate {
	if id != nil {
		cc = cc.SetOwnerID(*id)
	}
	return cc
}

// SetOwner sets the owner edge to User.
func (cc *CarCreate) SetOwner(u *User) *CarCreate {
	return cc.SetOwnerID(u.ID)
}

// Save creates the Car in the database.
func (cc *CarCreate) Save(ctx context.Context) (*Car, error) {
	if len(cc.owner) > 1 {
		return nil, errors.New("entv2: multiple assignments on a unique edge \"owner\"")
	}
	return cc.sqlSave(ctx)
}

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

func (cc *CarCreate) sqlSave(ctx context.Context) (*Car, error) {
	var (
		c     = &Car{config: cc.config}
		_spec = &sqlgraph.CreateSpec{
			Table: car.Table,
			ID: &sqlgraph.FieldSpec{
				Type:   field.TypeInt,
				Column: car.FieldID,
			},
		}
	)
	if nodes := cc.owner; len(nodes) > 0 {
		edge := &sqlgraph.EdgeSpec{
			Rel:     sqlgraph.M2O,
			Inverse: true,
			Table:   car.OwnerTable,
			Columns: []string{car.OwnerColumn},
			Bidi:    false,
			Target: &sqlgraph.EdgeTarget{
				IDSpec: &sqlgraph.FieldSpec{
					Type:   field.TypeInt,
					Column: user.FieldID,
				},
			},
		}
		for k, _ := range nodes {
			edge.Target.Nodes = append(edge.Target.Nodes, k)
		}
		_spec.Edges = append(_spec.Edges, edge)
	}
	if err := sqlgraph.CreateNode(ctx, cc.driver, _spec); err != nil {
		if cerr, ok := isSQLConstraintError(err); ok {
			err = cerr
		}
		return nil, err
	}
	id := _spec.ID.Value.(int64)
	c.ID = int(id)
	return c, nil
}