// Copyright 2019-present Facebook Inc. 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 ent, DO NOT EDIT.

package ent

import (
	"context"
	"errors"

	"entgo.io/ent/dialect/gremlin"
	"entgo.io/ent/dialect/gremlin/graph/dsl"
	"entgo.io/ent/dialect/gremlin/graph/dsl/__"
	"entgo.io/ent/dialect/gremlin/graph/dsl/g"
	"entgo.io/ent/dialect/gremlin/graph/dsl/p"
	"entgo.io/ent/entc/integration/ent/schema"
	"entgo.io/ent/entc/integration/gremlin/ent/document"
)

// DocumentCreate is the builder for creating a Document entity.
type DocumentCreate struct {
	config
	mutation *DocumentMutation
	hooks    []Hook
}

// SetName sets the "name" field.
func (_c *DocumentCreate) SetName(v string) *DocumentCreate {
	_c.mutation.SetName(v)
	return _c
}

// SetAttachment sets the "attachment" field.
func (_c *DocumentCreate) SetAttachment(v []byte) *DocumentCreate {
	_c.mutation.SetAttachment(v)
	return _c
}

// SetMetadata sets the "metadata" field.
func (_c *DocumentCreate) SetMetadata(v []byte) *DocumentCreate {
	_c.mutation.SetMetadata(v)
	return _c
}

// SetNillableMetadata sets the "metadata" field if the given value is not nil.
func (_c *DocumentCreate) SetNillableMetadata(v *[]byte) *DocumentCreate {
	if v != nil {
		_c.SetMetadata(*v)
	}
	return _c
}

// SetPayload sets the "payload" field.
func (_c *DocumentCreate) SetPayload(v *schema.DocPayload) *DocumentCreate {
	_c.mutation.SetPayload(v)
	return _c
}

// SetDescription sets the "description" field.
func (_c *DocumentCreate) SetDescription(v string) *DocumentCreate {
	_c.mutation.SetDescription(v)
	return _c
}

// SetNillableDescription sets the "description" field if the given value is not nil.
func (_c *DocumentCreate) SetNillableDescription(v *string) *DocumentCreate {
	if v != nil {
		_c.SetDescription(*v)
	}
	return _c
}

// Mutation returns the DocumentMutation object of the builder.
func (_c *DocumentCreate) Mutation() *DocumentMutation {
	return _c.mutation
}

// Save creates the Document in the database.
func (_c *DocumentCreate) Save(ctx context.Context) (*Document, error) {
	return withHooks(ctx, _c.gremlinSave, _c.mutation, _c.hooks)
}

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

// Exec executes the query.
func (_c *DocumentCreate) Exec(ctx context.Context) error {
	_, err := _c.Save(ctx)
	return err
}

// ExecX is like Exec, but panics if an error occurs.
func (_c *DocumentCreate) ExecX(ctx context.Context) {
	if err := _c.Exec(ctx); err != nil {
		panic(err)
	}
}

// check runs all checks and user-defined validators on the builder.
func (_c *DocumentCreate) check() error {
	if _, ok := _c.mutation.Name(); !ok {
		return &ValidationError{Name: "name", err: errors.New(`ent: missing required field "Document.name"`)}
	}
	if _, ok := _c.mutation.Attachment(); !ok {
		return &ValidationError{Name: "attachment", err: errors.New(`ent: missing required field "Document.attachment"`)}
	}
	return nil
}

func (_c *DocumentCreate) gremlinSave(ctx context.Context) (*Document, error) {
	if err := _c.check(); err != nil {
		return nil, err
	}
	res := &gremlin.Response{}
	query, bindings := _c.gremlin().Query()
	if err := _c.driver.Exec(ctx, query, bindings, res); err != nil {
		return nil, err
	}
	if err, ok := isConstantError(res); ok {
		return nil, err
	}
	rnode := &Document{config: _c.config}
	if err := rnode.FromResponse(res); err != nil {
		return nil, err
	}
	_c.mutation.id = &rnode.ID
	_c.mutation.done = true
	return rnode, nil
}

func (_c *DocumentCreate) gremlin() *dsl.Traversal {
	type constraint struct {
		pred *dsl.Traversal // constraint predicate.
		test *dsl.Traversal // test matches and its constant.
	}
	constraints := make([]*constraint, 0, 1)
	v := g.AddV(document.Label)
	if value, ok := _c.mutation.Name(); ok {
		constraints = append(constraints, &constraint{
			pred: g.V().Has(document.Label, document.FieldName, value).Count(),
			test: __.Is(p.NEQ(0)).Constant(NewErrUniqueField(document.Label, document.FieldName, value)),
		})
		v.Property(dsl.Single, document.FieldName, value)
	}
	if len(constraints) == 0 {
		return v.ValueMap(true)
	}
	tr := constraints[0].pred.Coalesce(constraints[0].test, v.ValueMap(true))
	for _, cr := range constraints[1:] {
		tr = cr.pred.Coalesce(cr.test, tr)
	}
	return tr
}

// DocumentCreateBulk is the builder for creating many Document entities in bulk.
type DocumentCreateBulk struct {
	config
	err      error
	builders []*DocumentCreate
}