import { MessageState } from "./state/ConversationInputState";
import { ConversationState } from "./state/ConversationState";
/**
 * File attachment configuration
 *
 * @typedef FileAttachmentConfig
 * @property {boolean} [enabled=true] Represents if file attachments are supported.
 * @property {number} [numberOfAttachments=1] Maximum number of file attachments supported per message.
 * @property {number} [maxFileSize=10485760] Maximum file size that can be uploaded. Enter a value in bytes. Default is 10mb
 * @property {number} [maxFileSizeTotal] Maximum total file attachments size that can be uploaded per message. Enter a value in bytes.
 * @property {Array<string>} [acceptedExtensions=["jpg", "jpeg", "png", "gif", "txt", "pdf"]] Allowed file extensions to be uploaded.
 * @property {boolean} [readOnly=false] Represents if file attachment is read only
 * @memberof Config
 */
export interface FileAttachmentConfig {
    enabled?: boolean;
    numberOfAttachments?: number;
    maxFileSize?: number;
    maxTotalFileSize?: number;
    acceptedExtensions?: Array<string>;
    readOnly?: boolean;
}
export declare const FILE_TYPES: {
    jpg: {
        extension: RegExp;
        type: RegExp;
        iconName: string;
    };
    jpeg: {
        extension: RegExp;
        type: RegExp;
        iconName: string;
    };
    png: {
        extension: RegExp;
        type: RegExp;
        iconName: string;
    };
    heic: {
        extension: RegExp;
        type: RegExp;
        iconName: string;
    };
    gif: {
        extension: RegExp;
        type: RegExp;
        iconName: string;
    };
    amr: {
        extension: RegExp;
        type: RegExp;
        iconName: string;
    };
    mp3: {
        extension: RegExp;
        type: RegExp;
        iconName: string;
    };
    mp4: {
        extension: RegExp;
        type: RegExp;
        iconName: string;
    };
    pdf: {
        extension: RegExp;
        type: RegExp;
        iconName: string;
    };
    txt: {
        extension: RegExp;
        type: RegExp;
        iconName: string;
    };
};
export declare const MAX_FILE_SIZE: number;
export declare const MAX_FILE_COUNT = 1;
export declare const ALLOWED_FILE_EXTENSIONS: string[];
export declare const getAllowedFileExtensions: (conversationSid: string) => Array<string>;
export declare const isValidFileType: (file: Partial<File>, conversationSid: string) => boolean;
export declare const isFileAttachmentEnabled: (conversationSid: string) => boolean;
export declare const isFileAttachmentReadOnly: (conversationSid: string) => boolean;
export declare const canAttachFile: (messageState: MessageState, conversation: ConversationState, conversationType?: "web" | "email") => boolean;
export declare const getFileIcon: (file: Partial<File>) => string;
export declare const getSupportedFileExtensionRegex: (fileName: string) => RegExp;
export declare const getDerivedFileLimits: (conversation: ConversationState) => {
    fileSizeLimit: number;
    totalFileSizeLimit: number;
    fileCountLimit: number;
};
export declare const isTextAndAttachmentRestricted: (conversationSid: string) => boolean;