import * as Promise from 'bluebird';
import * as TypeUtils from '../type-utils';

const typeFunc = (
	necessity: string,
	index: string,
	defaultValue = ' DEFAULT 0',
) => 'INTEGER' + defaultValue + necessity + index;

export const types = {
	postgres: typeFunc,
	mysql: typeFunc,
	websql: typeFunc,
	odata: {
		name: 'Edm.Boolean',
	},
};

export const fetchProcessing = Promise.method((data: any) => data === 1);

export const validate = TypeUtils.validate.checkRequired(originalValue => {
	// We use Number rather than parseInt as it deals with booleans and will return NaN for things like "a1"
	const value = Number(originalValue);
	if (Number.isNaN(value) || ![0, 1].includes(value)) {
		throw new Error(
			`is not a boolean: ${JSON.stringify(
				originalValue,
			)} (${typeof originalValue})`,
		);
	} else {
		return value;
	}
});