import { SmrtCollection } from '@happyvertical/smrt-core';
import { Attachment } from '../models/Attachment';
export declare class AttachmentCollection extends SmrtCollection<Attachment> {
    static readonly _itemClass: typeof Attachment;
    /**
     * Get attachments for a message
     */
    getByMessage(messageId: string): Promise<Attachment[]>;
    /**
     * Get attachments by content type
     */
    getByContentType(contentType: string): Promise<Attachment[]>;
    /**
     * Get image attachments
     */
    getImages(messageId?: string): Promise<Attachment[]>;
    /**
     * Get PDF attachments
     */
    getPdfs(messageId?: string): Promise<Attachment[]>;
    /**
     * Get inline attachments (embedded in message body)
     */
    getInline(messageId: string): Promise<Attachment[]>;
    /**
     * Get regular attachments (not inline)
     */
    getRegular(messageId: string): Promise<Attachment[]>;
    /**
     * Get attachments with external files
     */
    getWithExternalFiles(): Promise<Attachment[]>;
    /**
     * Get total size of attachments for a message
     */
    getTotalSize(messageId: string): Promise<number>;
    /**
     * Get largest attachments
     */
    getLargest(limit?: number): Promise<Attachment[]>;
    /**
     * Search attachments by filename
     */
    searchByFilename(query: string): Promise<Attachment[]>;
    /**
     * Get attachments by extension
     */
    getByExtension(extension: string): Promise<Attachment[]>;
    /**
     * Get attachment statistics
     */
    getStats(): Promise<{
        total: number;
        totalSize: number;
        byType: Record<string, number>;
        inline: number;
        regular: number;
    }>;
    /**
     * Delete all attachments for a message
     */
    deleteByMessage(messageId: string): Promise<number>;
    findByTenant(tenantId: string): Promise<Attachment[]>;
    findGlobal(): Promise<Attachment[]>;
    findWithGlobals(tenantId: string): Promise<Attachment[]>;
}
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