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type CreatePageInput struct {
	ParentID *string `json:"parent_id,omitempty"`
	Title    string  `json:"title"`
	Emoji    *string `json:"emoji,omitempty"`
	Content  *string `json:"content,omitempty"`
}

type EntityType string

type Image struct {
	ID          string    `json:"id"`
	PageID      string    `json:"page_id"`
	Filename    string    `json:"filename"`
	ContentType string    `json:"content_type"`
	SizeBytes   int       `json:"size_bytes"`
	Data        []byte    `json:"-"`
	CreatedAt   time.Time `json:"created_at"`
}

type ImageMeta struct {
	ID          string    `json:"id"`
	PageID      string    `json:"page_id"`
	Filename    string    `json:"filename"`
	ContentType string    `json:"content_type"`
	SizeBytes   int       `json:"size_bytes"`
	URL         string    `json:"url"`
	CreatedAt   time.Time `json:"created_at"`
}

type MovePageInput struct {
	ParentID *string `json:"parent_id,omitempty"`
	Position int     `json:"position"`
}

type Page struct {
	ID         string     `json:"id"`
	EntityType EntityType `json:"entity_type"`
	EntityID   string     `json:"entity_id"`
	ParentID   *string    `json:"parent_id,omitempty"`
	Position   int        `json:"position"`
	Title      string     `json:"title"`
	Emoji      *string    `json:"emoji,omitempty"`
	Content    *string    `json:"content,omitempty"`
	CreatedBy  *string    `json:"created_by,omitempty"`
	CreatedAt  time.Time  `json:"created_at"`
	UpdatedAt  time.Time  `json:"updated_at"`

	Children   []*Page `json:"children,omitempty"`
	ImageCount int     `json:"image_count,omitempty"`
}

type PageTree struct {
	Pages      []*Page      `json:"pages"`
	TotalPages int          `json:"total_pages"`
	Stats      StorageStats `json:"stats"`
}

type PostgresRepository struct {
	// contains filtered or unexported fields
}

type Repository interface {
	CreatePage(ctx context.Context, entityType EntityType, entityID string, input CreatePageInput, createdBy *string) (*Page, error)
	GetPage(ctx context.Context, pageID string) (*Page, error)
	UpdatePage(ctx context.Context, pageID string, input UpdatePageInput) (*Page, error)
	DeletePage(ctx context.Context, pageID string) error
	MovePage(ctx context.Context, pageID string, input MovePageInput) (*Page, error)

	GetPageTree(ctx context.Context, entityType EntityType, entityID string) (*PageTree, error)
	GetRootPages(ctx context.Context, entityType EntityType, entityID string) ([]*Page, error)
	GetChildPages(ctx context.Context, parentID string) ([]*Page, error)
	SearchPages(ctx context.Context, entityType EntityType, entityID string, query string, limit, offset int) ([]*Page, int, error)
	CountPages(ctx context.Context, entityType EntityType, entityID string) (int, error)

	CreateImage(ctx context.Context, pageID string, input UploadImageInput) (*Image, error)
	GetImage(ctx context.Context, imageID string) (*Image, error)
	GetImageMeta(ctx context.Context, imageID string) (*ImageMeta, error)
	DeleteImage(ctx context.Context, imageID string) error
	ListPageImages(ctx context.Context, pageID string) ([]*ImageMeta, error)
	CountPageImages(ctx context.Context, pageID string) (int, error)

	GetStorageStats(ctx context.Context, entityType EntityType, entityID string) (*StorageStats, error)
	GetTotalStorageBytes(ctx context.Context, entityType EntityType, entityID string) (int64, error)

	GetPageEntityInfo(ctx context.Context, pageID string) (EntityType, string, error)
	GetImagePageID(ctx context.Context, imageID string) (string, error)
}

type Service struct {
	// contains filtered or unexported fields
}

type StorageStats struct {
	EntityType  EntityType `json:"entity_type"`
	EntityID    string     `json:"entity_id"`
	UsedBytes   int64      `json:"used_bytes"`
	MaxBytes    int64      `json:"max_bytes"`
	ImageCount  int        `json:"image_count"`
	PageCount   int        `json:"page_count"`
	UsedPercent float64    `json:"used_percent"`
}

type UpdatePageInput struct {
	Title   *string `json:"title,omitempty"`
	Emoji   *string `json:"emoji,omitempty"`
	Content *string `json:"content,omitempty"`
}

type UploadImageInput struct {
	Filename    string
	ContentType string
	Data        []byte
}