export type JsonRpcId = number | string;

export interface JsonRpcMessage {
	jsonrpc?: "2.0";
	id?: JsonRpcId | null;
	method?: string;
	params?: unknown;
	result?: unknown;
	error?: {
		code?: number;
		message?: string;
		data?: unknown;
	};
}

export type ReasoningEffort = "none" | "minimal" | "low" | "medium" | "high" | "xhigh" | "max";

export interface AcpInitializeResult {
	protocolVersion?: number;
	authMethods?: Array<{ id?: string; name?: string; description?: string }>;
}

export interface AcpSessionResult {
	sessionId?: string;
}

export interface AcpPromptMeta {
	requestId?: string;
	promptId?: string;
	inputTokens?: number;
	outputTokens?: number;
	cachedReadTokens?: number;
	reasoningTokens?: number;
	totalTokens?: number;
	modelId?: string;
}

export interface AcpPromptResult {
	stopReason?: string;
	_meta?: AcpPromptMeta;
}

export interface AcpSessionUpdate {
	sessionUpdate?: string;
	content?: { text?: string; type?: string };
	title?: string;
	kind?: string;
	status?: string;
	toolCallId?: string;
	rawInput?: unknown;
}

export interface PermissionOption {
	optionId: string;
	name: string;
	kind: "allow_once" | "allow_always" | "reject_once" | "reject_always" | string;
}

export interface PermissionRequest {
	sessionId?: string;
	toolCall?: {
		toolCallId?: string;
		title?: string;
		kind?: string;
		rawInput?: unknown;
	};
	options?: PermissionOption[];
}

export type PermissionResponse =
	| { outcome: { outcome: "cancelled" } }
	| { outcome: { outcome: "selected"; optionId: string } };

export interface PermissionUiContext {
	hasUI: boolean;
	ui: {
		select(
			title: string,
			options: string[],
			opts?: { signal?: AbortSignal },
		): Promise<string | undefined>;
	};
}

export function isRecord(value: unknown): value is Record<string, unknown> {
	return typeof value === "object" && value !== null && !Array.isArray(value);
}