import type { MessageStatus, SourceProviderMetadata, ThreadMessage } from "@assistant-ui/core";
import type { CloudMessage } from "assistant-cloud";
import type { ReadonlyJSONObject, ReadonlyJSONValue } from "assistant-stream/utils";
import type { ExportedMessageRepositoryItem } from "../runtime-cores/utils/MessageRepository.js";
type AuiV0MessagePart = {
    readonly type: "text";
    readonly text: string;
} | {
    readonly type: "reasoning";
    readonly text: string;
} | {
    readonly type: "source";
    readonly sourceType: "url";
    readonly id: string;
    readonly url: string;
    readonly title?: string;
    readonly providerMetadata?: SourceProviderMetadata;
} | {
    readonly type: "source";
    readonly sourceType: "document";
    readonly id: string;
    readonly title: string;
    readonly mediaType: string;
    readonly filename?: string;
    readonly providerMetadata?: SourceProviderMetadata;
} | {
    readonly type: "tool-call";
    readonly toolCallId: string;
    readonly toolName: string;
    readonly args: ReadonlyJSONObject;
    readonly result?: ReadonlyJSONValue;
    readonly isError?: true;
} | {
    readonly type: "tool-call";
    readonly toolCallId: string;
    readonly toolName: string;
    readonly argsText: string;
    readonly result?: ReadonlyJSONValue;
    readonly isError?: true;
} | {
    readonly type: "image";
    readonly image: string;
} | {
    readonly type: "file";
    readonly data: string;
    readonly mimeType: string;
    readonly filename?: string;
};
type AuiV0Message = {
    readonly role: "assistant" | "user" | "system";
    readonly status?: MessageStatus;
    readonly content: readonly AuiV0MessagePart[];
    readonly metadata: {
        readonly unstable_state?: ReadonlyJSONValue;
        readonly unstable_annotations: readonly ReadonlyJSONValue[];
        readonly unstable_data: readonly ReadonlyJSONValue[];
        readonly steps: readonly {
            readonly usage?: {
                readonly inputTokens: number;
                readonly outputTokens: number;
            };
        }[];
        readonly custom: ReadonlyJSONObject;
    };
};
export declare function auiV0Encode(message: ThreadMessage): AuiV0Message;
export declare function auiV0Decode(cloudMessage: CloudMessage & {
    format: "aui/v0";
}): ExportedMessageRepositoryItem;
export {};
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