part1.ts

import * as fs from 'fs';
const input = fs
	.readFileSync('input', 'utf8')
	.split('\n\n')
	.map((x) => x.split('\n').map((y) => y.split('')));

let result = 0;

for (const str of input) {
	const rows = Array(str.length)
		.fill('')
		.map((_, i) => str[i].join(''));
	const columns = Array(str[0].length)
		.fill('')
		.map((_, i) => str.map((x) => x[i]).join(''));

	const rowsOfReflection = [];
	for (let r = 1; r < rows.length; r++) {
		rowsOfReflection.push(r);
		for (let i = r - 1, j = r; i >= 0 && j < rows.length; i--, j++) {
			if (rows[i] != rows[j]) {
				rowsOfReflection.splice(rowsOfReflection.length - 1, 1);
				break;
			}
		}
	}

	console.log(rowsOfReflection);

	const columnsOfReflection = [];
	for (let c = 1; c < columns.length; c++) {
		columnsOfReflection.push(c);
		for (let i = c - 1, j = c; i >= 0 && j < columns.length; i--, j++) {
			if (columns[i] != columns[j]) {
				columnsOfReflection.splice(columnsOfReflection.length - 1, 1);
				break;
			}
		}
	}

	result += 100 * (rowsOfReflection[0] ?? 0);
	result += columnsOfReflection[0] ?? 0;
}

console.log(result);