export const CORE_HOST_BOOTSTRAP_GLOBAL_KEY =
	"__getuserfeedback_core_host_bootstrap" as const;

export const CORE_HOST_BOOTSTRAP_PROTOCOL_VERSION = "v2" as const;

export const CORE_HOST_BOOTSTRAP_READY_EVENT_NAME =
	"getuserfeedback:core-host-bootstrap:ready" as const;

export const CORE_HOST_BOOTSTRAP_REQUIRED_FRAGMENT =
	`getuserfeedback-core-host-bootstrap=${CORE_HOST_BOOTSTRAP_PROTOCOL_VERSION}` as const;

export type CoreHostBootstrapMessageListener = (message: unknown) => void;

export type CoreHostBootstrapTransport = {
	postMessage: (message: unknown) => void;
	subscribe: (listener: CoreHostBootstrapMessageListener) => () => void;
};

export type CoreHostBootstrapConnection = {
	connect: () => Promise<void>;
	disconnect: () => Promise<void>;
};

export type CreateCoreHostBootstrapConnection = (options: {
	generation: number;
	onConnected: (transport: CoreHostBootstrapTransport) => void;
	onError?: (error: Error) => void;
}) => CoreHostBootstrapConnection;

export type CoreHostBootstrapMarker = {
	protocolVersion: typeof CORE_HOST_BOOTSTRAP_PROTOCOL_VERSION;
	createCoreHostConnection: CreateCoreHostBootstrapConnection;
};