/* eslint-disable @typescript-eslint/strict-boolean-expressions */
import {
	Encoding,
	parse,
	ParseOptions,
	stringify,
	StringifyOptions
} from './codec';

const base16Encoding: Encoding = {
	chars: '0123456789ABCDEF',
	bits : 4
};

const base32Encoding: Encoding = {
	chars: 'ABCDEFGHIJKLMNOPQRSTUVWXYZ234567',
	bits : 5
};

const base32HexEncoding: Encoding = {
	chars: '0123456789ABCDEFGHIJKLMNOPQRSTUV',
	bits : 5
};

const base64Encoding: Encoding = {
	chars: 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/',
	bits : 6
};

const base64UrlEncoding: Encoding = {
	chars: 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_',
	bits : 6
};

export const base16 = {
	parse(string: string, opts?: ParseOptions): Uint8Array {
		return parse(string.toUpperCase(), base16Encoding, opts);
	},

	stringify(data: ArrayLike<number>, opts?: StringifyOptions): string {
		return stringify(data, base16Encoding, opts);
	}
};

export const base32 = {
	parse(string: string, opts: ParseOptions = {}): Uint8Array {
		return parse(
			opts.loose
			? string
				.toUpperCase()
				.replace(/0/g, 'O')
				.replace(/1/g, 'L')
				.replace(/8/g, 'B')
			: string,
			base32Encoding,
			opts
		);
	},

	stringify(data: ArrayLike<number>, opts?: StringifyOptions): string {
		return stringify(data, base32Encoding, opts);
	}
};

export const base32hex = {
	parse(string: string, opts?: ParseOptions): Uint8Array {
		return parse(string, base32HexEncoding, opts);
	},

	stringify(data: ArrayLike<number>, opts?: StringifyOptions): string {
		return stringify(data, base32HexEncoding, opts);
	}
};

export const base64 = {
	parse(string: string, opts?: ParseOptions): Uint8Array {
		return parse(string, base64Encoding, opts);
	},

	stringify(data: ArrayLike<number>, opts?: StringifyOptions): string {
		return stringify(data, base64Encoding, opts);
	}
};

export const base64url = {
	parse(string: string, opts?: ParseOptions): Uint8Array {
		return parse(string, base64UrlEncoding, opts);
	},

	stringify(data: ArrayLike<number>, opts?: StringifyOptions): string {
		return stringify(data, base64UrlEncoding, opts);
	}
};

export const codec = {parse, stringify};