/**
 * AuraGlass 5.0 `src/ai/types.ts` — the §4.5 AI data model.
 *
 * Structural mirror of the AI SDK `UIMessage`: `useChat().messages` type-checks
 * as `AgMessage[]` with no cast and no `ai` import in shipped code.
 */
export type AgRole = 'user' | 'assistant' | 'system' | 'tool';
export interface AgMessage<M = AgMessageMetadata> {
    id: string;
    role: AgRole;
    parts: readonly AgPart[];
    metadata?: M;
}
export interface AgMessageMetadata {
    createdAt?: string | number;
    model?: string;
    status?: 'pending' | 'streaming' | 'complete' | 'error' | 'aborted';
    usage?: AgUsage;
}
export type AgPart = {
    type: 'text';
    text: string;
    state?: 'streaming' | 'done';
} | {
    type: 'reasoning';
    text: string;
    state?: 'streaming' | 'done';
} | AgToolPart | (Omit<AgToolPart, 'type'> & {
    type: 'dynamic-tool';
    toolName: string;
}) | {
    type: 'source-url';
    sourceId: string;
    url: string;
    title?: string;
} | {
    type: 'source-document';
    sourceId: string;
    mediaType: string;
    title: string;
    filename?: string;
} | {
    type: 'file';
    mediaType: string;
    url: string;
    filename?: string;
} | {
    type: 'step-start';
} | {
    type: `data-${string}`;
    id?: string;
    data: unknown;
};
export interface AgToolPart {
    type: `tool-${string}`;
    toolCallId: string;
    state: AgToolSdkState;
    input?: unknown;
    output?: unknown;
    errorText?: string;
    approval?: {
        id: string;
        approved?: boolean;
        reason?: string;
    };
}
export type AgToolSdkState = 'input-streaming' | 'input-available' | 'approval-requested' | 'approval-responded' | 'output-available' | 'output-error' | 'output-denied';
export type AgToolDisplayState = 'queued' | 'running' | 'needs-approval' | 'succeeded' | 'failed' | 'denied';
export interface AgUsage {
    inputTokens?: number;
    outputTokens?: number;
    reasoningTokens?: number;
    cachedInputTokens?: number;
    contextWindow?: number;
    costUsd?: number;
}
export type AgChatStatus = 'ready' | 'submitted' | 'streaming' | 'error';
/** AgentSteps step shape (REQ-SURF-123). */
export interface AgStep {
    id: string;
    label: string;
    state: AgToolDisplayState | 'skipped';
    detail?: string;
    startedAt?: number;
    endedAt?: number;
    children?: readonly AgStep[];
}
//# sourceMappingURL=types.d.ts.map