export type CacheControl = {
	browserTTL: number;
	edgeTTL: number;
	bypassCache: boolean;
};

export type AssetManifestType = Record<string, string>;

export type Options = {
	cacheControl:
		| ((req: Request) => Partial<CacheControl>)
		| Partial<CacheControl>;
	ASSET_NAMESPACE: KVNamespace;
	ASSET_MANIFEST: AssetManifestType | string;
	mapRequestToAsset?: (req: Request, options?: Partial<Options>) => Request;
	defaultMimeType: string;
	defaultDocument: string;
	pathIsEncoded: boolean;
	defaultETag: "strong" | "weak";
};

export class KVError extends Error {
	constructor(message?: string, status: number = 500) {
		super(message);
		// see: typescriptlang.org/docs/handbook/release-notes/typescript-2-2.html
		Object.setPrototypeOf(this, new.target.prototype); // restore prototype chain
		this.name = KVError.name; // stack traces display correctly now
		this.status = status;
	}
	status: number;
}
export class MethodNotAllowedError extends KVError {
	constructor(
		message: string = `Not a valid request method`,
		status: number = 405
	) {
		super(message, status);
	}
}
export class NotFoundError extends KVError {
	constructor(message: string = `Not Found`, status: number = 404) {
		super(message, status);
	}
}
export class InternalError extends KVError {
	constructor(
		message: string = `Internal Error in KV Asset Handler`,
		status: number = 500
	) {
		super(message, status);
	}
}