// Code generated by entc, DO NOT EDIT.

package ent

import (
	"context"
	"fmt"
	"sync"
	"time"

	"github.com/go-kratos/examples/blog/internal/data/ent/article"
	"github.com/go-kratos/examples/blog/internal/data/ent/comment"
	"github.com/go-kratos/examples/blog/internal/data/ent/predicate"
	"github.com/go-kratos/examples/blog/internal/data/ent/tag"

	"entgo.io/ent"
)

const (
	// Operation types.
	OpCreate    = ent.OpCreate
	OpDelete    = ent.OpDelete
	OpDeleteOne = ent.OpDeleteOne
	OpUpdate    = ent.OpUpdate
	OpUpdateOne = ent.OpUpdateOne

	// Node types.
	TypeArticle = "Article"
	TypeComment = "Comment"
	TypeTag     = "Tag"
)

// ArticleMutation represents an operation that mutates the Article nodes in the graph.
type ArticleMutation struct {
	config
	op              Op
	typ             string
	id              *int64
	title           *string
	content         *string
	created_at      *time.Time
	updated_at      *time.Time
	clearedFields   map[string]struct{}
	comments        map[int64]struct{}
	removedcomments map[int64]struct{}
	clearedcomments bool
	tags            map[int64]struct{}
	removedtags     map[int64]struct{}
	clearedtags     bool
	done            bool
	oldValue        func(context.Context) (*Article, error)
	predicates      []predicate.Article
}

var _ ent.Mutation = (*ArticleMutation)(nil)

// articleOption allows management of the mutation configuration using functional options.
type articleOption func(*ArticleMutation)

// newArticleMutation creates new mutation for the Article entity.
func newArticleMutation(c config, op Op, opts ...articleOption) *ArticleMutation {
	m := &ArticleMutation{
		config:        c,
		op:            op,
		typ:           TypeArticle,
		clearedFields: make(map[string]struct{}),
	}
	for _, opt := range opts {
		opt(m)
	}
	return m
}

// withArticleID sets the ID field of the mutation.
func withArticleID(id int64) articleOption {
	return func(m *ArticleMutation) {
		var (
			err   error
			once  sync.Once
			value *Article
		)
		m.oldValue = func(ctx context.Context) (*Article, error) {
			once.Do(func() {
				if m.done {
					err = fmt.Errorf("querying old values post mutation is not allowed")
				} else {
					value, err = m.Client().Article.Get(ctx, id)
				}
			})
			return value, err
		}
		m.id = &id
	}
}

// withArticle sets the old Article of the mutation.
func withArticle(node *Article) articleOption {
	return func(m *ArticleMutation) {
		m.oldValue = func(context.Context) (*Article, error) {
			return node, nil
		}
		m.id = &node.ID
	}
}

// Client returns a new `ent.Client` from the mutation. If the mutation was
// executed in a transaction (ent.Tx), a transactional client is returned.
func (m ArticleMutation) Client() *Client {
	client := &Client{config: m.config}
	client.init()
	return client
}

// Tx returns an `ent.Tx` for mutations that were executed in transactions;
// it returns an error otherwise.
func (m ArticleMutation) Tx() (*Tx, error) {
	if _, ok := m.driver.(*txDriver); !ok {
		return nil, fmt.Errorf("ent: mutation is not running in a transaction")
	}
	tx := &Tx{config: m.config}
	tx.init()
	return tx, nil
}

// SetID sets the value of the id field. Note that this
// operation is only accepted on creation of Article entities.
func (m *ArticleMutation) SetID(id int64) {
	m.id = &id
}

// ID returns the ID value in the mutation. Note that the ID
// is only available if it was provided to the builder.
func (m *ArticleMutation) ID() (id int64, exists bool) {
	if m.id == nil {
		return
	}
	return *m.id, true
}

// SetTitle sets the "title" field.
func (m *ArticleMutation) SetTitle(s string) {
	m.title = &s
}

// Title returns the value of the "title" field in the mutation.
func (m *ArticleMutation) Title() (r string, exists bool) {
	v := m.title
	if v == nil {
		return
	}
	return *v, true
}

// OldTitle returns the old "title" field's value of the Article entity.
// If the Article object wasn't provided to the builder, the object is fetched from the database.
// An error is returned if the mutation operation is not UpdateOne, or the database query fails.
func (m *ArticleMutation) OldTitle(ctx context.Context) (v string, err error) {
	if !m.op.Is(OpUpdateOne) {
		return v, fmt.Errorf("OldTitle is only allowed on UpdateOne operations")
	}
	if m.id == nil || m.oldValue == nil {
		return v, fmt.Errorf("OldTitle requires an ID field in the mutation")
	}
	oldValue, err := m.oldValue(ctx)
	if err != nil {
		return v, fmt.Errorf("querying old value for OldTitle: %w", err)
	}
	return oldValue.Title, nil
}

// ResetTitle resets all changes to the "title" field.
func (m *ArticleMutation) ResetTitle() {
	m.title = nil
}

// SetContent sets the "content" field.
func (m *ArticleMutation) SetContent(s string) {
	m.content = &s
}

// Content returns the value of the "content" field in the mutation.
func (m *ArticleMutation) Content() (r string, exists bool) {
	v := m.content
	if v == nil {
		return
	}
	return *v, true
}

// OldContent returns the old "content" field's value of the Article entity.
// If the Article object wasn't provided to the builder, the object is fetched from the database.
// An error is returned if the mutation operation is not UpdateOne, or the database query fails.
func (m *ArticleMutation) OldContent(ctx context.Context) (v string, err error) {
	if !m.op.Is(OpUpdateOne) {
		return v, fmt.Errorf("OldContent is only allowed on UpdateOne operations")
	}
	if m.id == nil || m.oldValue == nil {
		return v, fmt.Errorf("OldContent requires an ID field in the mutation")
	}
	oldValue, err := m.oldValue(ctx)
	if err != nil {
		return v, fmt.Errorf("querying old value for OldContent: %w", err)
	}
	return oldValue.Content, nil
}

// ResetContent resets all changes to the "content" field.
func (m *ArticleMutation) ResetContent() {
	m.content = nil
}

// SetCreatedAt sets the "created_at" field.
func (m *ArticleMutation) SetCreatedAt(t time.Time) {
	m.created_at = &t
}

// CreatedAt returns the value of the "created_at" field in the mutation.
func (m *ArticleMutation) CreatedAt() (r time.Time, exists bool) {
	v := m.created_at
	if v == nil {
		return
	}
	return *v, true
}

// OldCreatedAt returns the old "created_at" field's value of the Article entity.
// If the Article object wasn't provided to the builder, the object is fetched from the database.
// An error is returned if the mutation operation is not UpdateOne, or the database query fails.
func (m *ArticleMutation) OldCreatedAt(ctx context.Context) (v time.Time, err error) {
	if !m.op.Is(OpUpdateOne) {
		return v, fmt.Errorf("OldCreatedAt is only allowed on UpdateOne operations")
	}
	if m.id == nil || m.oldValue == nil {
		return v, fmt.Errorf("OldCreatedAt requires an ID field in the mutation")
	}
	oldValue, err := m.oldValue(ctx)
	if err != nil {
		return v, fmt.Errorf("querying old value for OldCreatedAt: %w", err)
	}
	return oldValue.CreatedAt, nil
}

// ResetCreatedAt resets all changes to the "created_at" field.
func (m *ArticleMutation) ResetCreatedAt() {
	m.created_at = nil
}

// SetUpdatedAt sets the "updated_at" field.
func (m *ArticleMutation) SetUpdatedAt(t time.Time) {
	m.updated_at = &t
}

// UpdatedAt returns the value of the "updated_at" field in the mutation.
func (m *ArticleMutation) UpdatedAt() (r time.Time, exists bool) {
	v := m.updated_at
	if v == nil {
		return
	}
	return *v, true
}

// OldUpdatedAt returns the old "updated_at" field's value of the Article entity.
// If the Article object wasn't provided to the builder, the object is fetched from the database.
// An error is returned if the mutation operation is not UpdateOne, or the database query fails.
func (m *ArticleMutation) OldUpdatedAt(ctx context.Context) (v time.Time, err error) {
	if !m.op.Is(OpUpdateOne) {
		return v, fmt.Errorf("OldUpdatedAt is only allowed on UpdateOne operations")
	}
	if m.id == nil || m.oldValue == nil {
		return v, fmt.Errorf("OldUpdatedAt requires an ID field in the mutation")
	}
	oldValue, err := m.oldValue(ctx)
	if err != nil {
		return v, fmt.Errorf("querying old value for OldUpdatedAt: %w", err)
	}
	return oldValue.UpdatedAt, nil
}

// ResetUpdatedAt resets all changes to the "updated_at" field.
func (m *ArticleMutation) ResetUpdatedAt() {
	m.updated_at = nil
}

// AddCommentIDs adds the "comments" edge to the Comment entity by ids.
func (m *ArticleMutation) AddCommentIDs(ids ...int64) {
	if m.comments == nil {
		m.comments = make(map[int64]struct{})
	}
	for i := range ids {
		m.comments[ids[i]] = struct{}{}
	}
}

// ClearComments clears the "comments" edge to the Comment entity.
func (m *ArticleMutation) ClearComments() {
	m.clearedcomments = true
}

// CommentsCleared returns if the "comments" edge to the Comment entity was cleared.
func (m *ArticleMutation) CommentsCleared() bool {
	return m.clearedcomments
}

// RemoveCommentIDs removes the "comments" edge to the Comment entity by IDs.
func (m *ArticleMutation) RemoveCommentIDs(ids ...int64) {
	if m.removedcomments == nil {
		m.removedcomments = make(map[int64]struct{})
	}
	for i := range ids {
		m.removedcomments[ids[i]] = struct{}{}
	}
}

// RemovedComments returns the removed IDs of the "comments" edge to the Comment entity.
func (m *ArticleMutation) RemovedCommentsIDs() (ids []int64) {
	for id := range m.removedcomments {
		ids = append(ids, id)
	}
	return
}

// CommentsIDs returns the "comments" edge IDs in the mutation.
func (m *ArticleMutation) CommentsIDs() (ids []int64) {
	for id := range m.comments {
		ids = append(ids, id)
	}
	return
}

// ResetComments resets all changes to the "comments" edge.
func (m *ArticleMutation) ResetComments() {
	m.comments = nil
	m.clearedcomments = false
	m.removedcomments = nil
}

// AddTagIDs adds the "tags" edge to the Tag entity by ids.
func (m *ArticleMutation) AddTagIDs(ids ...int64) {
	if m.tags == nil {
		m.tags = make(map[int64]struct{})
	}
	for i := range ids {
		m.tags[ids[i]] = struct{}{}
	}
}

// ClearTags clears the "tags" edge to the Tag entity.
func (m *ArticleMutation) ClearTags() {
	m.clearedtags = true
}

// TagsCleared returns if the "tags" edge to the Tag entity was cleared.
func (m *ArticleMutation) TagsCleared() bool {
	return m.clearedtags
}

// RemoveTagIDs removes the "tags" edge to the Tag entity by IDs.
func (m *ArticleMutation) RemoveTagIDs(ids ...int64) {
	if m.removedtags == nil {
		m.removedtags = make(map[int64]struct{})
	}
	for i := range ids {
		m.removedtags[ids[i]] = struct{}{}
	}
}

// RemovedTags returns the removed IDs of the "tags" edge to the Tag entity.
func (m *ArticleMutation) RemovedTagsIDs() (ids []int64) {
	for id := range m.removedtags {
		ids = append(ids, id)
	}
	return
}

// TagsIDs returns the "tags" edge IDs in the mutation.
func (m *ArticleMutation) TagsIDs() (ids []int64) {
	for id := range m.tags {
		ids = append(ids, id)
	}
	return
}

// ResetTags resets all changes to the "tags" edge.
func (m *ArticleMutation) ResetTags() {
	m.tags = nil
	m.clearedtags = false
	m.removedtags = nil
}

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

// Type returns the node type of this mutation (Article).
func (m *ArticleMutation) 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 *ArticleMutation) Fields() []string {
	fields := make([]string, 0, 4)
	if m.title != nil {
		fields = append(fields, article.FieldTitle)
	}
	if m.content != nil {
		fields = append(fields, article.FieldContent)
	}
	if m.created_at != nil {
		fields = append(fields, article.FieldCreatedAt)
	}
	if m.updated_at != nil {
		fields = append(fields, article.FieldUpdatedAt)
	}
	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 *ArticleMutation) Field(name string) (ent.Value, bool) {
	switch name {
	case article.FieldTitle:
		return m.Title()
	case article.FieldContent:
		return m.Content()
	case article.FieldCreatedAt:
		return m.CreatedAt()
	case article.FieldUpdatedAt:
		return m.UpdatedAt()
	}
	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 *ArticleMutation) OldField(ctx context.Context, name string) (ent.Value, error) {
	switch name {
	case article.FieldTitle:
		return m.OldTitle(ctx)
	case article.FieldContent:
		return m.OldContent(ctx)
	case article.FieldCreatedAt:
		return m.OldCreatedAt(ctx)
	case article.FieldUpdatedAt:
		return m.OldUpdatedAt(ctx)
	}
	return nil, fmt.Errorf("unknown Article 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 *ArticleMutation) SetField(name string, value ent.Value) error {
	switch name {
	case article.FieldTitle:
		v, ok := value.(string)
		if !ok {
			return fmt.Errorf("unexpected type %T for field %s", value, name)
		}
		m.SetTitle(v)
		return nil
	case article.FieldContent:
		v, ok := value.(string)
		if !ok {
			return fmt.Errorf("unexpected type %T for field %s", value, name)
		}
		m.SetContent(v)
		return nil
	case article.FieldCreatedAt:
		v, ok := value.(time.Time)
		if !ok {
			return fmt.Errorf("unexpected type %T for field %s", value, name)
		}
		m.SetCreatedAt(v)
		return nil
	case article.FieldUpdatedAt:
		v, ok := value.(time.Time)
		if !ok {
			return fmt.Errorf("unexpected type %T for field %s", value, name)
		}
		m.SetUpdatedAt(v)
		return nil
	}
	return fmt.Errorf("unknown Article field %s", name)
}

// AddedFields returns all numeric fields that were incremented/decremented during
// this mutation.
func (m *ArticleMutation) AddedFields() []string {
	return nil
}

// 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 *ArticleMutation) AddedField(name string) (ent.Value, bool) {
	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 *ArticleMutation) AddField(name string, value ent.Value) error {
	switch name {
	}
	return fmt.Errorf("unknown Article numeric field %s", name)
}

// ClearedFields returns all nullable fields that were cleared during this
// mutation.
func (m *ArticleMutation) ClearedFields() []string {
	return nil
}

// FieldCleared returns a boolean indicating if a field with the given name was
// cleared in this mutation.
func (m *ArticleMutation) 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 *ArticleMutation) ClearField(name string) error {
	return fmt.Errorf("unknown Article 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 *ArticleMutation) ResetField(name string) error {
	switch name {
	case article.FieldTitle:
		m.ResetTitle()
		return nil
	case article.FieldContent:
		m.ResetContent()
		return nil
	case article.FieldCreatedAt:
		m.ResetCreatedAt()
		return nil
	case article.FieldUpdatedAt:
		m.ResetUpdatedAt()
		return nil
	}
	return fmt.Errorf("unknown Article field %s", name)
}

// AddedEdges returns all edge names that were set/added in this mutation.
func (m *ArticleMutation) AddedEdges() []string {
	edges := make([]string, 0, 2)
	if m.comments != nil {
		edges = append(edges, article.EdgeComments)
	}
	if m.tags != nil {
		edges = append(edges, article.EdgeTags)
	}
	return edges
}

// AddedIDs returns all IDs (to other nodes) that were added for the given edge
// name in this mutation.
func (m *ArticleMutation) AddedIDs(name string) []ent.Value {
	switch name {
	case article.EdgeComments:
		ids := make([]ent.Value, 0, len(m.comments))
		for id := range m.comments {
			ids = append(ids, id)
		}
		return ids
	case article.EdgeTags:
		ids := make([]ent.Value, 0, len(m.tags))
		for id := range m.tags {
			ids = append(ids, id)
		}
		return ids
	}
	return nil
}

// RemovedEdges returns all edge names that were removed in this mutation.
func (m *ArticleMutation) RemovedEdges() []string {
	edges := make([]string, 0, 2)
	if m.removedcomments != nil {
		edges = append(edges, article.EdgeComments)
	}
	if m.removedtags != nil {
		edges = append(edges, article.EdgeTags)
	}
	return edges
}

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

// ClearedEdges returns all edge names that were cleared in this mutation.
func (m *ArticleMutation) ClearedEdges() []string {
	edges := make([]string, 0, 2)
	if m.clearedcomments {
		edges = append(edges, article.EdgeComments)
	}
	if m.clearedtags {
		edges = append(edges, article.EdgeTags)
	}
	return edges
}

// EdgeCleared returns a boolean which indicates if the edge with the given name
// was cleared in this mutation.
func (m *ArticleMutation) EdgeCleared(name string) bool {
	switch name {
	case article.EdgeComments:
		return m.clearedcomments
	case article.EdgeTags:
		return m.clearedtags
	}
	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 *ArticleMutation) ClearEdge(name string) error {
	switch name {
	}
	return fmt.Errorf("unknown Article 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 *ArticleMutation) ResetEdge(name string) error {
	switch name {
	case article.EdgeComments:
		m.ResetComments()
		return nil
	case article.EdgeTags:
		m.ResetTags()
		return nil
	}
	return fmt.Errorf("unknown Article edge %s", name)
}

// CommentMutation represents an operation that mutates the Comment nodes in the graph.
type CommentMutation struct {
	config
	op            Op
	typ           string
	id            *int64
	name          *string
	content       *string
	created_at    *time.Time
	updated_at    *time.Time
	clearedFields map[string]struct{}
	post          *int64
	clearedpost   bool
	done          bool
	oldValue      func(context.Context) (*Comment, error)
	predicates    []predicate.Comment
}

var _ ent.Mutation = (*CommentMutation)(nil)

// commentOption allows management of the mutation configuration using functional options.
type commentOption func(*CommentMutation)

// newCommentMutation creates new mutation for the Comment entity.
func newCommentMutation(c config, op Op, opts ...commentOption) *CommentMutation {
	m := &CommentMutation{
		config:        c,
		op:            op,
		typ:           TypeComment,
		clearedFields: make(map[string]struct{}),
	}
	for _, opt := range opts {
		opt(m)
	}
	return m
}

// withCommentID sets the ID field of the mutation.
func withCommentID(id int64) commentOption {
	return func(m *CommentMutation) {
		var (
			err   error
			once  sync.Once
			value *Comment
		)
		m.oldValue = func(ctx context.Context) (*Comment, error) {
			once.Do(func() {
				if m.done {
					err = fmt.Errorf("querying old values post mutation is not allowed")
				} else {
					value, err = m.Client().Comment.Get(ctx, id)
				}
			})
			return value, err
		}
		m.id = &id
	}
}

// withComment sets the old Comment of the mutation.
func withComment(node *Comment) commentOption {
	return func(m *CommentMutation) {
		m.oldValue = func(context.Context) (*Comment, error) {
			return node, nil
		}
		m.id = &node.ID
	}
}

// Client returns a new `ent.Client` from the mutation. If the mutation was
// executed in a transaction (ent.Tx), a transactional client is returned.
func (m CommentMutation) Client() *Client {
	client := &Client{config: m.config}
	client.init()
	return client
}

// Tx returns an `ent.Tx` for mutations that were executed in transactions;
// it returns an error otherwise.
func (m CommentMutation) Tx() (*Tx, error) {
	if _, ok := m.driver.(*txDriver); !ok {
		return nil, fmt.Errorf("ent: mutation is not running in a transaction")
	}
	tx := &Tx{config: m.config}
	tx.init()
	return tx, nil
}

// SetID sets the value of the id field. Note that this
// operation is only accepted on creation of Comment entities.
func (m *CommentMutation) SetID(id int64) {
	m.id = &id
}

// ID returns the ID value in the mutation. Note that the ID
// is only available if it was provided to the builder.
func (m *CommentMutation) ID() (id int64, exists bool) {
	if m.id == nil {
		return
	}
	return *m.id, true
}

// SetName sets the "name" field.
func (m *CommentMutation) SetName(s string) {
	m.name = &s
}

// Name returns the value of the "name" field in the mutation.
func (m *CommentMutation) Name() (r string, exists bool) {
	v := m.name
	if v == nil {
		return
	}
	return *v, true
}

// OldName returns the old "name" field's value of the Comment entity.
// If the Comment object wasn't provided to the builder, the object is fetched from the database.
// An error is returned if the mutation operation is not UpdateOne, or the database query fails.
func (m *CommentMutation) OldName(ctx context.Context) (v string, err error) {
	if !m.op.Is(OpUpdateOne) {
		return v, fmt.Errorf("OldName is only allowed on UpdateOne operations")
	}
	if m.id == nil || m.oldValue == nil {
		return v, fmt.Errorf("OldName requires an ID field in the mutation")
	}
	oldValue, err := m.oldValue(ctx)
	if err != nil {
		return v, fmt.Errorf("querying old value for OldName: %w", err)
	}
	return oldValue.Name, nil
}

// ResetName resets all changes to the "name" field.
func (m *CommentMutation) ResetName() {
	m.name = nil
}

// SetContent sets the "content" field.
func (m *CommentMutation) SetContent(s string) {
	m.content = &s
}

// Content returns the value of the "content" field in the mutation.
func (m *CommentMutation) Content() (r string, exists bool) {
	v := m.content
	if v == nil {
		return
	}
	return *v, true
}

// OldContent returns the old "content" field's value of the Comment entity.
// If the Comment object wasn't provided to the builder, the object is fetched from the database.
// An error is returned if the mutation operation is not UpdateOne, or the database query fails.
func (m *CommentMutation) OldContent(ctx context.Context) (v string, err error) {
	if !m.op.Is(OpUpdateOne) {
		return v, fmt.Errorf("OldContent is only allowed on UpdateOne operations")
	}
	if m.id == nil || m.oldValue == nil {
		return v, fmt.Errorf("OldContent requires an ID field in the mutation")
	}
	oldValue, err := m.oldValue(ctx)
	if err != nil {
		return v, fmt.Errorf("querying old value for OldContent: %w", err)
	}
	return oldValue.Content, nil
}

// ResetContent resets all changes to the "content" field.
func (m *CommentMutation) ResetContent() {
	m.content = nil
}

// SetCreatedAt sets the "created_at" field.
func (m *CommentMutation) SetCreatedAt(t time.Time) {
	m.created_at = &t
}

// CreatedAt returns the value of the "created_at" field in the mutation.
func (m *CommentMutation) CreatedAt() (r time.Time, exists bool) {
	v := m.created_at
	if v == nil {
		return
	}
	return *v, true
}

// OldCreatedAt returns the old "created_at" field's value of the Comment entity.
// If the Comment object wasn't provided to the builder, the object is fetched from the database.
// An error is returned if the mutation operation is not UpdateOne, or the database query fails.
func (m *CommentMutation) OldCreatedAt(ctx context.Context) (v time.Time, err error) {
	if !m.op.Is(OpUpdateOne) {
		return v, fmt.Errorf("OldCreatedAt is only allowed on UpdateOne operations")
	}
	if m.id == nil || m.oldValue == nil {
		return v, fmt.Errorf("OldCreatedAt requires an ID field in the mutation")
	}
	oldValue, err := m.oldValue(ctx)
	if err != nil {
		return v, fmt.Errorf("querying old value for OldCreatedAt: %w", err)
	}
	return oldValue.CreatedAt, nil
}

// ResetCreatedAt resets all changes to the "created_at" field.
func (m *CommentMutation) ResetCreatedAt() {
	m.created_at = nil
}

// SetUpdatedAt sets the "updated_at" field.
func (m *CommentMutation) SetUpdatedAt(t time.Time) {
	m.updated_at = &t
}

// UpdatedAt returns the value of the "updated_at" field in the mutation.
func (m *CommentMutation) UpdatedAt() (r time.Time, exists bool) {
	v := m.updated_at
	if v == nil {
		return
	}
	return *v, true
}

// OldUpdatedAt returns the old "updated_at" field's value of the Comment entity.
// If the Comment object wasn't provided to the builder, the object is fetched from the database.
// An error is returned if the mutation operation is not UpdateOne, or the database query fails.
func (m *CommentMutation) OldUpdatedAt(ctx context.Context) (v time.Time, err error) {
	if !m.op.Is(OpUpdateOne) {
		return v, fmt.Errorf("OldUpdatedAt is only allowed on UpdateOne operations")
	}
	if m.id == nil || m.oldValue == nil {
		return v, fmt.Errorf("OldUpdatedAt requires an ID field in the mutation")
	}
	oldValue, err := m.oldValue(ctx)
	if err != nil {
		return v, fmt.Errorf("querying old value for OldUpdatedAt: %w", err)
	}
	return oldValue.UpdatedAt, nil
}

// ResetUpdatedAt resets all changes to the "updated_at" field.
func (m *CommentMutation) ResetUpdatedAt() {
	m.updated_at = nil
}

// SetPostID sets the "post" edge to the Article entity by id.
func (m *CommentMutation) SetPostID(id int64) {
	m.post = &id
}

// ClearPost clears the "post" edge to the Article entity.
func (m *CommentMutation) ClearPost() {
	m.clearedpost = true
}

// PostCleared returns if the "post" edge to the Article entity was cleared.
func (m *CommentMutation) PostCleared() bool {
	return m.clearedpost
}

// PostID returns the "post" edge ID in the mutation.
func (m *CommentMutation) PostID() (id int64, exists bool) {
	if m.post != nil {
		return *m.post, true
	}
	return
}

// PostIDs returns the "post" edge IDs in the mutation.
// Note that IDs always returns len(IDs) <= 1 for unique edges, and you should use
// PostID instead. It exists only for internal usage by the builders.
func (m *CommentMutation) PostIDs() (ids []int64) {
	if id := m.post; id != nil {
		ids = append(ids, *id)
	}
	return
}

// ResetPost resets all changes to the "post" edge.
func (m *CommentMutation) ResetPost() {
	m.post = nil
	m.clearedpost = false
}

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

// Type returns the node type of this mutation (Comment).
func (m *CommentMutation) 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 *CommentMutation) Fields() []string {
	fields := make([]string, 0, 4)
	if m.name != nil {
		fields = append(fields, comment.FieldName)
	}
	if m.content != nil {
		fields = append(fields, comment.FieldContent)
	}
	if m.created_at != nil {
		fields = append(fields, comment.FieldCreatedAt)
	}
	if m.updated_at != nil {
		fields = append(fields, comment.FieldUpdatedAt)
	}
	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 *CommentMutation) Field(name string) (ent.Value, bool) {
	switch name {
	case comment.FieldName:
		return m.Name()
	case comment.FieldContent:
		return m.Content()
	case comment.FieldCreatedAt:
		return m.CreatedAt()
	case comment.FieldUpdatedAt:
		return m.UpdatedAt()
	}
	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 *CommentMutation) OldField(ctx context.Context, name string) (ent.Value, error) {
	switch name {
	case comment.FieldName:
		return m.OldName(ctx)
	case comment.FieldContent:
		return m.OldContent(ctx)
	case comment.FieldCreatedAt:
		return m.OldCreatedAt(ctx)
	case comment.FieldUpdatedAt:
		return m.OldUpdatedAt(ctx)
	}
	return nil, fmt.Errorf("unknown Comment 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 *CommentMutation) SetField(name string, value ent.Value) error {
	switch name {
	case comment.FieldName:
		v, ok := value.(string)
		if !ok {
			return fmt.Errorf("unexpected type %T for field %s", value, name)
		}
		m.SetName(v)
		return nil
	case comment.FieldContent:
		v, ok := value.(string)
		if !ok {
			return fmt.Errorf("unexpected type %T for field %s", value, name)
		}
		m.SetContent(v)
		return nil
	case comment.FieldCreatedAt:
		v, ok := value.(time.Time)
		if !ok {
			return fmt.Errorf("unexpected type %T for field %s", value, name)
		}
		m.SetCreatedAt(v)
		return nil
	case comment.FieldUpdatedAt:
		v, ok := value.(time.Time)
		if !ok {
			return fmt.Errorf("unexpected type %T for field %s", value, name)
		}
		m.SetUpdatedAt(v)
		return nil
	}
	return fmt.Errorf("unknown Comment field %s", name)
}

// AddedFields returns all numeric fields that were incremented/decremented during
// this mutation.
func (m *CommentMutation) AddedFields() []string {
	return nil
}

// 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 *CommentMutation) AddedField(name string) (ent.Value, bool) {
	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 *CommentMutation) AddField(name string, value ent.Value) error {
	switch name {
	}
	return fmt.Errorf("unknown Comment numeric field %s", name)
}

// ClearedFields returns all nullable fields that were cleared during this
// mutation.
func (m *CommentMutation) ClearedFields() []string {
	return nil
}

// FieldCleared returns a boolean indicating if a field with the given name was
// cleared in this mutation.
func (m *CommentMutation) 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 *CommentMutation) ClearField(name string) error {
	return fmt.Errorf("unknown Comment 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 *CommentMutation) ResetField(name string) error {
	switch name {
	case comment.FieldName:
		m.ResetName()
		return nil
	case comment.FieldContent:
		m.ResetContent()
		return nil
	case comment.FieldCreatedAt:
		m.ResetCreatedAt()
		return nil
	case comment.FieldUpdatedAt:
		m.ResetUpdatedAt()
		return nil
	}
	return fmt.Errorf("unknown Comment field %s", name)
}

// AddedEdges returns all edge names that were set/added in this mutation.
func (m *CommentMutation) AddedEdges() []string {
	edges := make([]string, 0, 1)
	if m.post != nil {
		edges = append(edges, comment.EdgePost)
	}
	return edges
}

// AddedIDs returns all IDs (to other nodes) that were added for the given edge
// name in this mutation.
func (m *CommentMutation) AddedIDs(name string) []ent.Value {
	switch name {
	case comment.EdgePost:
		if id := m.post; id != nil {
			return []ent.Value{*id}
		}
	}
	return nil
}

// RemovedEdges returns all edge names that were removed in this mutation.
func (m *CommentMutation) RemovedEdges() []string {
	edges := make([]string, 0, 1)
	return edges
}

// RemovedIDs returns all IDs (to other nodes) that were removed for the edge with
// the given name in this mutation.
func (m *CommentMutation) RemovedIDs(name string) []ent.Value {
	switch name {
	}
	return nil
}

// ClearedEdges returns all edge names that were cleared in this mutation.
func (m *CommentMutation) ClearedEdges() []string {
	edges := make([]string, 0, 1)
	if m.clearedpost {
		edges = append(edges, comment.EdgePost)
	}
	return edges
}

// EdgeCleared returns a boolean which indicates if the edge with the given name
// was cleared in this mutation.
func (m *CommentMutation) EdgeCleared(name string) bool {
	switch name {
	case comment.EdgePost:
		return m.clearedpost
	}
	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 *CommentMutation) ClearEdge(name string) error {
	switch name {
	case comment.EdgePost:
		m.ClearPost()
		return nil
	}
	return fmt.Errorf("unknown Comment 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 *CommentMutation) ResetEdge(name string) error {
	switch name {
	case comment.EdgePost:
		m.ResetPost()
		return nil
	}
	return fmt.Errorf("unknown Comment edge %s", name)
}

// TagMutation represents an operation that mutates the Tag nodes in the graph.
type TagMutation struct {
	config
	op            Op
	typ           string
	id            *int64
	slug          *string
	name          *string
	created_at    *time.Time
	updated_at    *time.Time
	clearedFields map[string]struct{}
	posts         map[int64]struct{}
	removedposts  map[int64]struct{}
	clearedposts  bool
	done          bool
	oldValue      func(context.Context) (*Tag, error)
	predicates    []predicate.Tag
}

var _ ent.Mutation = (*TagMutation)(nil)

// tagOption allows management of the mutation configuration using functional options.
type tagOption func(*TagMutation)

// newTagMutation creates new mutation for the Tag entity.
func newTagMutation(c config, op Op, opts ...tagOption) *TagMutation {
	m := &TagMutation{
		config:        c,
		op:            op,
		typ:           TypeTag,
		clearedFields: make(map[string]struct{}),
	}
	for _, opt := range opts {
		opt(m)
	}
	return m
}

// withTagID sets the ID field of the mutation.
func withTagID(id int64) tagOption {
	return func(m *TagMutation) {
		var (
			err   error
			once  sync.Once
			value *Tag
		)
		m.oldValue = func(ctx context.Context) (*Tag, error) {
			once.Do(func() {
				if m.done {
					err = fmt.Errorf("querying old values post mutation is not allowed")
				} else {
					value, err = m.Client().Tag.Get(ctx, id)
				}
			})
			return value, err
		}
		m.id = &id
	}
}

// withTag sets the old Tag of the mutation.
func withTag(node *Tag) tagOption {
	return func(m *TagMutation) {
		m.oldValue = func(context.Context) (*Tag, error) {
			return node, nil
		}
		m.id = &node.ID
	}
}

// Client returns a new `ent.Client` from the mutation. If the mutation was
// executed in a transaction (ent.Tx), a transactional client is returned.
func (m TagMutation) Client() *Client {
	client := &Client{config: m.config}
	client.init()
	return client
}

// Tx returns an `ent.Tx` for mutations that were executed in transactions;
// it returns an error otherwise.
func (m TagMutation) Tx() (*Tx, error) {
	if _, ok := m.driver.(*txDriver); !ok {
		return nil, fmt.Errorf("ent: mutation is not running in a transaction")
	}
	tx := &Tx{config: m.config}
	tx.init()
	return tx, nil
}

// SetID sets the value of the id field. Note that this
// operation is only accepted on creation of Tag entities.
func (m *TagMutation) SetID(id int64) {
	m.id = &id
}

// ID returns the ID value in the mutation. Note that the ID
// is only available if it was provided to the builder.
func (m *TagMutation) ID() (id int64, exists bool) {
	if m.id == nil {
		return
	}
	return *m.id, true
}

// SetSlug sets the "slug" field.
func (m *TagMutation) SetSlug(s string) {
	m.slug = &s
}

// Slug returns the value of the "slug" field in the mutation.
func (m *TagMutation) Slug() (r string, exists bool) {
	v := m.slug
	if v == nil {
		return
	}
	return *v, true
}

// OldSlug returns the old "slug" field's value of the Tag entity.
// If the Tag object wasn't provided to the builder, the object is fetched from the database.
// An error is returned if the mutation operation is not UpdateOne, or the database query fails.
func (m *TagMutation) OldSlug(ctx context.Context) (v string, err error) {
	if !m.op.Is(OpUpdateOne) {
		return v, fmt.Errorf("OldSlug is only allowed on UpdateOne operations")
	}
	if m.id == nil || m.oldValue == nil {
		return v, fmt.Errorf("OldSlug requires an ID field in the mutation")
	}
	oldValue, err := m.oldValue(ctx)
	if err != nil {
		return v, fmt.Errorf("querying old value for OldSlug: %w", err)
	}
	return oldValue.Slug, nil
}

// ResetSlug resets all changes to the "slug" field.
func (m *TagMutation) ResetSlug() {
	m.slug = nil
}

// SetName sets the "name" field.
func (m *TagMutation) SetName(s string) {
	m.name = &s
}

// Name returns the value of the "name" field in the mutation.
func (m *TagMutation) Name() (r string, exists bool) {
	v := m.name
	if v == nil {
		return
	}
	return *v, true
}

// OldName returns the old "name" field's value of the Tag entity.
// If the Tag object wasn't provided to the builder, the object is fetched from the database.
// An error is returned if the mutation operation is not UpdateOne, or the database query fails.
func (m *TagMutation) OldName(ctx context.Context) (v string, err error) {
	if !m.op.Is(OpUpdateOne) {
		return v, fmt.Errorf("OldName is only allowed on UpdateOne operations")
	}
	if m.id == nil || m.oldValue == nil {
		return v, fmt.Errorf("OldName requires an ID field in the mutation")
	}
	oldValue, err := m.oldValue(ctx)
	if err != nil {
		return v, fmt.Errorf("querying old value for OldName: %w", err)
	}
	return oldValue.Name, nil
}

// ResetName resets all changes to the "name" field.
func (m *TagMutation) ResetName() {
	m.name = nil
}

// SetCreatedAt sets the "created_at" field.
func (m *TagMutation) SetCreatedAt(t time.Time) {
	m.created_at = &t
}

// CreatedAt returns the value of the "created_at" field in the mutation.
func (m *TagMutation) CreatedAt() (r time.Time, exists bool) {
	v := m.created_at
	if v == nil {
		return
	}
	return *v, true
}

// OldCreatedAt returns the old "created_at" field's value of the Tag entity.
// If the Tag object wasn't provided to the builder, the object is fetched from the database.
// An error is returned if the mutation operation is not UpdateOne, or the database query fails.
func (m *TagMutation) OldCreatedAt(ctx context.Context) (v time.Time, err error) {
	if !m.op.Is(OpUpdateOne) {
		return v, fmt.Errorf("OldCreatedAt is only allowed on UpdateOne operations")
	}
	if m.id == nil || m.oldValue == nil {
		return v, fmt.Errorf("OldCreatedAt requires an ID field in the mutation")
	}
	oldValue, err := m.oldValue(ctx)
	if err != nil {
		return v, fmt.Errorf("querying old value for OldCreatedAt: %w", err)
	}
	return oldValue.CreatedAt, nil
}

// ResetCreatedAt resets all changes to the "created_at" field.
func (m *TagMutation) ResetCreatedAt() {
	m.created_at = nil
}

// SetUpdatedAt sets the "updated_at" field.
func (m *TagMutation) SetUpdatedAt(t time.Time) {
	m.updated_at = &t
}

// UpdatedAt returns the value of the "updated_at" field in the mutation.
func (m *TagMutation) UpdatedAt() (r time.Time, exists bool) {
	v := m.updated_at
	if v == nil {
		return
	}
	return *v, true
}

// OldUpdatedAt returns the old "updated_at" field's value of the Tag entity.
// If the Tag object wasn't provided to the builder, the object is fetched from the database.
// An error is returned if the mutation operation is not UpdateOne, or the database query fails.
func (m *TagMutation) OldUpdatedAt(ctx context.Context) (v time.Time, err error) {
	if !m.op.Is(OpUpdateOne) {
		return v, fmt.Errorf("OldUpdatedAt is only allowed on UpdateOne operations")
	}
	if m.id == nil || m.oldValue == nil {
		return v, fmt.Errorf("OldUpdatedAt requires an ID field in the mutation")
	}
	oldValue, err := m.oldValue(ctx)
	if err != nil {
		return v, fmt.Errorf("querying old value for OldUpdatedAt: %w", err)
	}
	return oldValue.UpdatedAt, nil
}

// ResetUpdatedAt resets all changes to the "updated_at" field.
func (m *TagMutation) ResetUpdatedAt() {
	m.updated_at = nil
}

// AddPostIDs adds the "posts" edge to the Article entity by ids.
func (m *TagMutation) AddPostIDs(ids ...int64) {
	if m.posts == nil {
		m.posts = make(map[int64]struct{})
	}
	for i := range ids {
		m.posts[ids[i]] = struct{}{}
	}
}

// ClearPosts clears the "posts" edge to the Article entity.
func (m *TagMutation) ClearPosts() {
	m.clearedposts = true
}

// PostsCleared returns if the "posts" edge to the Article entity was cleared.
func (m *TagMutation) PostsCleared() bool {
	return m.clearedposts
}

// RemovePostIDs removes the "posts" edge to the Article entity by IDs.
func (m *TagMutation) RemovePostIDs(ids ...int64) {
	if m.removedposts == nil {
		m.removedposts = make(map[int64]struct{})
	}
	for i := range ids {
		m.removedposts[ids[i]] = struct{}{}
	}
}

// RemovedPosts returns the removed IDs of the "posts" edge to the Article entity.
func (m *TagMutation) RemovedPostsIDs() (ids []int64) {
	for id := range m.removedposts {
		ids = append(ids, id)
	}
	return
}

// PostsIDs returns the "posts" edge IDs in the mutation.
func (m *TagMutation) PostsIDs() (ids []int64) {
	for id := range m.posts {
		ids = append(ids, id)
	}
	return
}

// ResetPosts resets all changes to the "posts" edge.
func (m *TagMutation) ResetPosts() {
	m.posts = nil
	m.clearedposts = false
	m.removedposts = nil
}

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

// Type returns the node type of this mutation (Tag).
func (m *TagMutation) 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 *TagMutation) Fields() []string {
	fields := make([]string, 0, 4)
	if m.slug != nil {
		fields = append(fields, tag.FieldSlug)
	}
	if m.name != nil {
		fields = append(fields, tag.FieldName)
	}
	if m.created_at != nil {
		fields = append(fields, tag.FieldCreatedAt)
	}
	if m.updated_at != nil {
		fields = append(fields, tag.FieldUpdatedAt)
	}
	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 *TagMutation) Field(name string) (ent.Value, bool) {
	switch name {
	case tag.FieldSlug:
		return m.Slug()
	case tag.FieldName:
		return m.Name()
	case tag.FieldCreatedAt:
		return m.CreatedAt()
	case tag.FieldUpdatedAt:
		return m.UpdatedAt()
	}
	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 *TagMutation) OldField(ctx context.Context, name string) (ent.Value, error) {
	switch name {
	case tag.FieldSlug:
		return m.OldSlug(ctx)
	case tag.FieldName:
		return m.OldName(ctx)
	case tag.FieldCreatedAt:
		return m.OldCreatedAt(ctx)
	case tag.FieldUpdatedAt:
		return m.OldUpdatedAt(ctx)
	}
	return nil, fmt.Errorf("unknown Tag 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 *TagMutation) SetField(name string, value ent.Value) error {
	switch name {
	case tag.FieldSlug:
		v, ok := value.(string)
		if !ok {
			return fmt.Errorf("unexpected type %T for field %s", value, name)
		}
		m.SetSlug(v)
		return nil
	case tag.FieldName:
		v, ok := value.(string)
		if !ok {
			return fmt.Errorf("unexpected type %T for field %s", value, name)
		}
		m.SetName(v)
		return nil
	case tag.FieldCreatedAt:
		v, ok := value.(time.Time)
		if !ok {
			return fmt.Errorf("unexpected type %T for field %s", value, name)
		}
		m.SetCreatedAt(v)
		return nil
	case tag.FieldUpdatedAt:
		v, ok := value.(time.Time)
		if !ok {
			return fmt.Errorf("unexpected type %T for field %s", value, name)
		}
		m.SetUpdatedAt(v)
		return nil
	}
	return fmt.Errorf("unknown Tag field %s", name)
}

// AddedFields returns all numeric fields that were incremented/decremented during
// this mutation.
func (m *TagMutation) AddedFields() []string {
	return nil
}

// 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 *TagMutation) AddedField(name string) (ent.Value, bool) {
	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 *TagMutation) AddField(name string, value ent.Value) error {
	switch name {
	}
	return fmt.Errorf("unknown Tag numeric field %s", name)
}

// ClearedFields returns all nullable fields that were cleared during this
// mutation.
func (m *TagMutation) ClearedFields() []string {
	return nil
}

// FieldCleared returns a boolean indicating if a field with the given name was
// cleared in this mutation.
func (m *TagMutation) 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 *TagMutation) ClearField(name string) error {
	return fmt.Errorf("unknown Tag 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 *TagMutation) ResetField(name string) error {
	switch name {
	case tag.FieldSlug:
		m.ResetSlug()
		return nil
	case tag.FieldName:
		m.ResetName()
		return nil
	case tag.FieldCreatedAt:
		m.ResetCreatedAt()
		return nil
	case tag.FieldUpdatedAt:
		m.ResetUpdatedAt()
		return nil
	}
	return fmt.Errorf("unknown Tag field %s", name)
}

// AddedEdges returns all edge names that were set/added in this mutation.
func (m *TagMutation) AddedEdges() []string {
	edges := make([]string, 0, 1)
	if m.posts != nil {
		edges = append(edges, tag.EdgePosts)
	}
	return edges
}

// AddedIDs returns all IDs (to other nodes) that were added for the given edge
// name in this mutation.
func (m *TagMutation) AddedIDs(name string) []ent.Value {
	switch name {
	case tag.EdgePosts:
		ids := make([]ent.Value, 0, len(m.posts))
		for id := range m.posts {
			ids = append(ids, id)
		}
		return ids
	}
	return nil
}

// RemovedEdges returns all edge names that were removed in this mutation.
func (m *TagMutation) RemovedEdges() []string {
	edges := make([]string, 0, 1)
	if m.removedposts != nil {
		edges = append(edges, tag.EdgePosts)
	}
	return edges
}

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

// ClearedEdges returns all edge names that were cleared in this mutation.
func (m *TagMutation) ClearedEdges() []string {
	edges := make([]string, 0, 1)
	if m.clearedposts {
		edges = append(edges, tag.EdgePosts)
	}
	return edges
}

// EdgeCleared returns a boolean which indicates if the edge with the given name
// was cleared in this mutation.
func (m *TagMutation) EdgeCleared(name string) bool {
	switch name {
	case tag.EdgePosts:
		return m.clearedposts
	}
	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 *TagMutation) ClearEdge(name string) error {
	switch name {
	}
	return fmt.Errorf("unknown Tag 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 *TagMutation) ResetEdge(name string) error {
	switch name {
	case tag.EdgePosts:
		m.ResetPosts()
		return nil
	}
	return fmt.Errorf("unknown Tag edge %s", name)
}