/**
 * Get control value.
 * Supported array names like `images[3].format`
 *
 * @param {string} name       - control name.
 * @param {Object} attributes - block attributes.
 *
 * @return {Mixed} value.
 */
export default function controlGetValue(name, attributes) {
	let val = attributes[name];

	// Parse arrays and objects.
	// Example `images[3].format`.
	if (typeof val === 'undefined' && /[\[\.]/g.test(name)) {
		// Find parts, used for objects.
		// Example `images.format`
		const valObjectParts = name.split('.');
		const valParts = [];

		if (valObjectParts && valObjectParts.length) {
			// Find parts, used for arrays.
			// Example `images[3]`
			valObjectParts.forEach((objPart) => {
				if (/[\[]/g.test(objPart)) {
					const valArrayParts = objPart.split(/[\[\]]/g);

					if (valArrayParts && valArrayParts.length) {
						valArrayParts.forEach((arrPart) => {
							if (arrPart !== '') {
								if (`${parseInt(arrPart, 10)}` === arrPart) {
									valParts.push(parseInt(arrPart, 10));
								} else {
									valParts.push(arrPart);
								}
							}
						});
					}
				} else {
					valParts.push(objPart);
				}
			});

			// Try to find value in attributes.
			if (valParts.length) {
				let currentVal = attributes;

				valParts.forEach((partName) => {
					if (
						currentVal &&
						typeof currentVal[partName] !== 'undefined'
					) {
						currentVal = currentVal[partName];
					} else {
						currentVal = undefined;
					}
				});

				val = currentVal;
			}
		}
	}

	return val;
}