active-svelte/src/arts/conn/errors.ts

import {
	ERROR_NAME_ALREADY_EXISTS,
	ERROR_NAME_CHANNEL_ALREADY_EXISTS,
	ERROR_NAME_CHANNEL_NOT_FOUND,
	ERROR_NAME_DISPOSED,
	ERROR_NAME_INVALID_FRAME,
	ERROR_NAME_INVALID_NAME,
	ERROR_NAME_NOT_FOUND,
	ERROR_NAME_WEBSOCKET_UNAVAILABLE
} from './consts.ts';

abstract class ConnEngineError extends Error {
	abstract readonly name: string;
	constructor(message: string, options?: { cause?: unknown }) {
		super(message, options);
	}
}

export class ConnDisposedError extends ConnEngineError {
	readonly name = ERROR_NAME_DISPOSED;
}

export class ConnConnectionAlreadyExistsError extends ConnEngineError {
	readonly name = ERROR_NAME_ALREADY_EXISTS;
	readonly connection: string;
	constructor(message: string, connection: string) {
		super(message);
		this.connection = connection;
	}
}

export class ConnConnectionNotFoundError extends ConnEngineError {
	readonly name = ERROR_NAME_NOT_FOUND;
	readonly connection: string;
	constructor(message: string, connection: string) {
		super(message);
		this.connection = connection;
	}
}

export class ConnInvalidConnectionNameError extends ConnEngineError {
	readonly name = ERROR_NAME_INVALID_NAME;
}

export class ConnInvalidFrameError extends ConnEngineError {
	readonly name = ERROR_NAME_INVALID_FRAME;
}

export class ConnChannelAlreadyExistsError extends ConnEngineError {
	readonly name = ERROR_NAME_CHANNEL_ALREADY_EXISTS;
	readonly channel: string;
	constructor(message: string, channel: string) {
		super(message);
		this.channel = channel;
	}
}

export class ConnChannelNotFoundError extends ConnEngineError {
	readonly name = ERROR_NAME_CHANNEL_NOT_FOUND;
	readonly channel: string;
	constructor(message: string, channel: string) {
		super(message);
		this.channel = channel;
	}
}

export class ConnWebSocketUnavailableError extends ConnEngineError {
	readonly name = ERROR_NAME_WEBSOCKET_UNAVAILABLE;
}

export function isConnDisposedError(value: unknown): value is ConnDisposedError {
	return value instanceof Error && (value as { name?: string }).name === ERROR_NAME_DISPOSED;
}

export function isConnConnectionAlreadyExistsError(
	value: unknown
): value is ConnConnectionAlreadyExistsError {
	return value instanceof Error && (value as { name?: string }).name === ERROR_NAME_ALREADY_EXISTS;
}

export function isConnConnectionNotFoundError(
	value: unknown
): value is ConnConnectionNotFoundError {
	return value instanceof Error && (value as { name?: string }).name === ERROR_NAME_NOT_FOUND;
}

export function isConnInvalidConnectionNameError(
	value: unknown
): value is ConnInvalidConnectionNameError {
	return value instanceof Error && (value as { name?: string }).name === ERROR_NAME_INVALID_NAME;
}

export function isConnInvalidFrameError(value: unknown): value is ConnInvalidFrameError {
	return value instanceof Error && (value as { name?: string }).name === ERROR_NAME_INVALID_FRAME;
}

export function isConnWebSocketUnavailableError(
	value: unknown
): value is ConnWebSocketUnavailableError {
	return (
		value instanceof Error && (value as { name?: string }).name === ERROR_NAME_WEBSOCKET_UNAVAILABLE
	);
}