// 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 metadata

import (
	"context"
	"fmt"

	"entgo.io/ent"
	"entgo.io/ent/dialect/sql"
	"entgo.io/ent/entc/integration/edgefield/ent/predicate"
)

// Mutation represents an operation that mutates the Metadata nodes in the graph.
type Mutation struct {
	op              ent.Op
	typ             string
	age             *int
	addage          *int
	clearedFields   map[string]struct{}
	user            *int
	cleareduser     bool
	children        map[int]struct{}
	removedchildren map[int]struct{}
	clearedchildren bool
	parent          *int
	clearedparent   bool
	predicates      []predicate.Metadata
}

// NewMutation creates a new Mutation for the Metadata entity.
func NewMutation(op ent.Op) *Mutation {
	return &Mutation{
		op:            op,
		typ:           "Metadata",
		clearedFields: make(map[string]struct{}),
	}
}

// Predicates returns the list of predicates set on the mutation.
func (m *Mutation) Predicates() []predicate.Metadata {
	return m.predicates
}

// SetAge sets the "age" field.
func (m *Mutation) SetAge(i int) {
	m.age = &i
	m.addage = nil
}

// Age returns the value of the "age" field in the mutation.
func (m *Mutation) Age() (r int, exists bool) {
	v := m.age
	if v == nil {
		return
	}
	return *v, true
}

// AddAge adds i to the "age" field.
func (m *Mutation) AddAge(i int) {
	if m.addage != nil {
		*m.addage += i
	} else {
		m.addage = &i
	}
}

// AddedAge returns the value that was added to the "age" field in this mutation.
func (m *Mutation) AddedAge() (r int, exists bool) {
	v := m.addage
	if v == nil {
		return
	}
	return *v, true
}

// ResetAge resets all changes to the "age" field.
func (m *Mutation) ResetAge() {
	m.age = nil
	m.addage = nil
}

// SetParentID sets the "parent_id" field.
func (m *Mutation) SetParentID(i int) {
	m.parent = &i
}

// ParentID returns the value of the "parent_id" field in the mutation.
func (m *Mutation) ParentID() (r int, exists bool) {
	v := m.parent
	if v == nil {
		return
	}
	return *v, true
}

// ClearParentID clears the value of the "parent_id" field.
func (m *Mutation) ClearParentID() {
	m.parent = nil
	m.clearedFields[FieldParentID] = struct{}{}
}

// ParentIDCleared returns if the "parent_id" field was cleared in this mutation.
func (m *Mutation) ParentIDCleared() bool {
	_, ok := m.clearedFields[FieldParentID]
	return ok
}

// ResetParentID resets all changes to the "parent_id" field.
func (m *Mutation) ResetParentID() {
	m.parent = nil
	delete(m.clearedFields, FieldParentID)
}

// SetUserID sets the "user" edge to the User entity by id.
func (m *Mutation) SetUserID(id int) {
	m.user = &id
}

// ClearUser clears the "user" edge to the User entity.
func (m *Mutation) ClearUser() {
	m.cleareduser = true
}

// UserCleared reports if the "user" edge to the User entity was cleared.
func (m *Mutation) UserCleared() bool {
	return m.cleareduser
}

// UserID returns the "user" edge ID in the mutation.
func (m *Mutation) UserID() (id int, exists bool) {
	if m.user != nil {
		return *m.user, true
	}
	return
}

// UserIDs returns the "user" edge IDs in the mutation.
// Note that IDs always returns len(IDs) <= 1 for unique edges, and you should use
// UserID instead. It exists only for internal usage by the builders.
func (m *Mutation) UserIDs() (ids []int) {
	if id := m.user; id != nil {
		ids = append(ids, *id)
	}
	return
}

// ResetUser resets all changes to the "user" edge.
func (m *Mutation) ResetUser() {
	m.user = nil
	m.cleareduser = false
}

// AddChildIDs adds the "children" edge to the Metadata entity by ids.
func (m *Mutation) AddChildIDs(ids ...int) {
	if m.children == nil {
		m.children = make(map[int]struct{})
	}
	for i := range ids {
		m.children[ids[i]] = struct{}{}
	}
}

// ClearChildren clears the "children" edge to the Metadata entity.
func (m *Mutation) ClearChildren() {
	m.clearedchildren = true
}

// ChildrenCleared reports if the "children" edge to the Metadata entity was cleared.
func (m *Mutation) ChildrenCleared() bool {
	return m.clearedchildren
}

// RemoveChildIDs removes the "children" edge to the Metadata entity by IDs.
func (m *Mutation) RemoveChildIDs(ids ...int) {
	if m.removedchildren == nil {
		m.removedchildren = make(map[int]struct{})
	}
	for i := range ids {
		delete(m.children, ids[i])
		m.removedchildren[ids[i]] = struct{}{}
	}
}

// RemovedChildren returns the removed IDs of the "children" edge to the Metadata entity.
func (m *Mutation) RemovedChildrenIDs() (ids []int) {
	for id := range m.removedchildren {
		ids = append(ids, id)
	}
	return
}

// ChildrenIDs returns the "children" edge IDs in the mutation.
func (m *Mutation) ChildrenIDs() (ids []int) {
	for id := range m.children {
		ids = append(ids, id)
	}
	return
}

// ResetChildren resets all changes to the "children" edge.
func (m *Mutation) ResetChildren() {
	m.children = nil
	m.clearedchildren = false
	m.removedchildren = nil
}

// ClearParent clears the "parent" edge to the Metadata entity.
func (m *Mutation) ClearParent() {
	m.clearedparent = true
	m.clearedFields[FieldParentID] = struct{}{}
}

// ParentCleared reports if the "parent" edge to the Metadata entity was cleared.
func (m *Mutation) ParentCleared() bool {
	return m.ParentIDCleared() || m.clearedparent
}

// ParentIDs returns the "parent" edge IDs in the mutation.
// Note that IDs always returns len(IDs) <= 1 for unique edges, and you should use
// ParentID instead. It exists only for internal usage by the builders.
func (m *Mutation) ParentIDs() (ids []int) {
	if id := m.parent; id != nil {
		ids = append(ids, *id)
	}
	return
}

// ResetParent resets all changes to the "parent" edge.
func (m *Mutation) ResetParent() {
	m.parent = nil
	m.clearedparent = false
}

// Where appends a list predicates to the Mutation builder.
func (m *Mutation) Where(ps ...predicate.Metadata) {
	m.predicates = append(m.predicates, ps...)
}

// WhereP appends storage-level predicates to the Mutation builder. Using this method,
// users can use type-assertion to append predicates that do not depend on any generated package.
func (m *Mutation) WhereP(ps ...func(*sql.Selector)) {
	p := make([]predicate.Metadata, len(ps))
	for i := range ps {
		p[i] = ps[i]
	}
	m.Where(p...)
}

// Op returns the operation name.
func (m *Mutation) Op() ent.Op {
	return m.op
}

// SetOp allows setting the mutation operation.
func (m *Mutation) SetOp(op ent.Op) {
	m.op = op
}

// Type returns the node type of this mutation (Metadata).
func (m *Mutation) Type() string {
	return m.typ
}

// Fields returns all fields that were changed during this mutation. Note that in
// order to get all numeric fields that were incremented/decremented, call
// AddedFields().
func (m *Mutation) Fields() []string {
	fields := make([]string, 0, 2)
	if m.age != nil {
		fields = append(fields, FieldAge)
	}
	if m.parent != nil {
		fields = append(fields, FieldParentID)
	}
	return fields
}

// Field returns the value of a field with the given name. The second boolean
// return value indicates that this field was not set, or was not defined in the
// schema.
func (m *Mutation) Field(name string) (ent.Value, bool) {
	switch name {
	case FieldAge:
		return m.Age()
	case FieldParentID:
		return m.ParentID()
	}
	return nil, false
}

// OldField returns the old value of the field from the database. An error is
// returned if the mutation operation is not UpdateOne, or the query to the
// database failed.
func (m *Mutation) OldField(ctx context.Context, name string) (ent.Value, error) {
	return nil, fmt.Errorf("unknown Metadata field %s", name)
}

// SetField sets the value of a field with the given name. It returns an error if
// the field is not defined in the schema, or if the type mismatched the field
// type.
func (m *Mutation) SetField(name string, value ent.Value) error {
	switch name {
	case FieldAge:
		v, ok := value.(int)
		if !ok {
			return fmt.Errorf("unexpected type %T for field %s", value, name)
		}
		m.SetAge(v)
		return nil
	case FieldParentID:
		v, ok := value.(int)
		if !ok {
			return fmt.Errorf("unexpected type %T for field %s", value, name)
		}
		m.SetParentID(v)
		return nil
	}
	return fmt.Errorf("unknown Metadata field %s", name)
}

// AddedFields returns all numeric fields that were incremented/decremented during
// this mutation.
func (m *Mutation) AddedFields() []string {
	var fields []string
	if m.addage != nil {
		fields = append(fields, FieldAge)
	}
	return fields
}

// AddedField returns the numeric value that was incremented/decremented on a field
// with the given name. The second boolean return value indicates that this field
// was not set, or was not defined in the schema.
func (m *Mutation) AddedField(name string) (ent.Value, bool) {
	switch name {
	case FieldAge:
		return m.AddedAge()
	}
	return nil, false
}

// AddField adds the value to the field with the given name. It returns an error if
// the field is not defined in the schema, or if the type mismatched the field
// type.
func (m *Mutation) AddField(name string, value ent.Value) error {
	switch name {
	case FieldAge:
		v, ok := value.(int)
		if !ok {
			return fmt.Errorf("unexpected type %T for field %s", value, name)
		}
		m.AddAge(v)
		return nil
	}
	return fmt.Errorf("unknown Metadata numeric field %s", name)
}

// ClearedFields returns all nullable fields that were cleared during this
// mutation.
func (m *Mutation) ClearedFields() []string {
	var fields []string
	if m.FieldCleared(FieldParentID) {
		fields = append(fields, FieldParentID)
	}
	return fields
}

// FieldCleared returns a boolean indicating if a field with the given name was
// cleared in this mutation.
func (m *Mutation) FieldCleared(name string) bool {
	_, ok := m.clearedFields[name]
	return ok
}

// ClearField clears the value of the field with the given name. It returns an
// error if the field is not defined in the schema.
func (m *Mutation) ClearField(name string) error {
	switch name {
	case FieldParentID:
		m.ClearParentID()
		return nil
	}
	return fmt.Errorf("unknown Metadata nullable field %s", name)
}

// ResetField resets all changes in the mutation for the field with the given name.
// It returns an error if the field is not defined in the schema.
func (m *Mutation) ResetField(name string) error {
	switch name {
	case FieldAge:
		m.ResetAge()
		return nil
	case FieldParentID:
		m.ResetParentID()
		return nil
	}
	return fmt.Errorf("unknown Metadata field %s", name)
}

// AddedEdges returns all edge names that were set/added in this mutation.
func (m *Mutation) AddedEdges() []string {
	edges := make([]string, 0, 3)
	if m.user != nil {
		edges = append(edges, EdgeUser)
	}
	if m.children != nil {
		edges = append(edges, EdgeChildren)
	}
	if m.parent != nil {
		edges = append(edges, EdgeParent)
	}
	return edges
}

// AddedIDs returns all IDs (to other nodes) that were added for the given edge
// name in this mutation.
func (m *Mutation) AddedIDs(name string) []ent.Value {
	switch name {
	case EdgeUser:
		if id := m.user; id != nil {
			return []ent.Value{*id}
		}
	case EdgeChildren:
		ids := make([]ent.Value, 0, len(m.children))
		for id := range m.children {
			ids = append(ids, id)
		}
		return ids
	case EdgeParent:
		if id := m.parent; id != nil {
			return []ent.Value{*id}
		}
	}
	return nil
}

// RemovedEdges returns all edge names that were removed in this mutation.
func (m *Mutation) RemovedEdges() []string {
	edges := make([]string, 0, 3)
	if m.removedchildren != nil {
		edges = append(edges, EdgeChildren)
	}
	return edges
}

// RemovedIDs returns all IDs (to other nodes) that were removed for the edge with
// the given name in this mutation.
func (m *Mutation) RemovedIDs(name string) []ent.Value {
	switch name {
	case EdgeChildren:
		ids := make([]ent.Value, 0, len(m.removedchildren))
		for id := range m.removedchildren {
			ids = append(ids, id)
		}
		return ids
	}
	return nil
}

// ClearedEdges returns all edge names that were cleared in this mutation.
func (m *Mutation) ClearedEdges() []string {
	edges := make([]string, 0, 3)
	if m.cleareduser {
		edges = append(edges, EdgeUser)
	}
	if m.clearedchildren {
		edges = append(edges, EdgeChildren)
	}
	if m.clearedparent {
		edges = append(edges, EdgeParent)
	}
	return edges
}

// EdgeCleared returns a boolean which indicates if the edge with the given name
// was cleared in this mutation.
func (m *Mutation) EdgeCleared(name string) bool {
	switch name {
	case EdgeUser:
		return m.cleareduser
	case EdgeChildren:
		return m.clearedchildren
	case EdgeParent:
		return m.clearedparent
	}
	return false
}

// ClearEdge clears the value of the edge with the given name. It returns an error
// if that edge is not defined in the schema.
func (m *Mutation) ClearEdge(name string) error {
	switch name {
	case EdgeUser:
		m.ClearUser()
		return nil
	case EdgeParent:
		m.ClearParent()
		return nil
	}
	return fmt.Errorf("unknown Metadata unique edge %s", name)
}

// ResetEdge resets all changes to the edge with the given name in this mutation.
// It returns an error if the edge is not defined in the schema.
func (m *Mutation) ResetEdge(name string) error {
	switch name {
	case EdgeUser:
		m.ResetUser()
		return nil
	case EdgeChildren:
		m.ResetChildren()
		return nil
	case EdgeParent:
		m.ResetParent()
		return nil
	}
	return fmt.Errorf("unknown Metadata edge %s", name)
}