import {
	saveYearReadme,
	readYearReadme,
	saveDayReadme,
	readDayReadme,
	readGlobalReadme,
	saveGlobalReadme,
} from "../io/readme.js";
import toFixed from "../utils/toFixed.js";
import { stripIndents } from "common-tags";
import { renderGlobalYearInfo } from "../configs/readmeMD.js";
import {
	renderYearDayBadges,
	renderYearResults,
} from "../configs/readmeYearMD.js";
import { readConfig } from "../io/config.js";
import type { YearConfig } from "../types/common";

export const updateReadmes = (currentYear: string, currentDay?: number) => {
	const config = readConfig();
	const yearConfig = config.years.find(y => y.year == Number(currentYear))!;
	updateGlobalReadme(yearConfig);
	updateYearReadme(yearConfig);
	updateDayReadme(yearConfig, currentDay);
};

const updateGlobalReadme = (config: YearConfig) => {
	const globalInfo = renderGlobalYearInfo(config);

	// Update year readme file
	const readme = readGlobalReadme()
		.replace(
			/<!--SOLUTIONS-->(.|\n|\r)+<!--\/SOLUTIONS-->/,
			`<!--SOLUTIONS-->\n\n${
				globalInfo?.badges ?? ""
			}\n\n<!--/SOLUTIONS-->`,
		)
		.replace(
			/<!--RESULTS-->(.|\n|\r)+<!--\/RESULTS-->/,
			`<!--RESULTS-->\n\n${globalInfo?.results ?? ""}\n\n<!--/RESULTS-->`,
		);

	saveGlobalReadme(readme);
};

const updateYearReadme = (config: YearConfig) => {
	const badges = renderYearDayBadges(config);
	const results = renderYearResults(config);

	// Update year readme file
	const readme = readYearReadme(config.year)
		.replace(
			/<!--SOLUTIONS-->(.|\n|\r)+<!--\/SOLUTIONS-->/,
			`<!--SOLUTIONS-->\n\n${badges}\n\n<!--/SOLUTIONS-->`,
		)
		.replace(
			/<!--RESULTS-->(.|\n|\r)+<!--\/RESULTS-->/,
			`<!--RESULTS-->\n\n${results}\n\n<!--/RESULTS-->`,
		);

	saveYearReadme(config.year, readme);
};

const updateDayReadme = (config: YearConfig, currentDay?: number) => {
	// Update day readme files
	config.days.forEach((d, index) => {
		if (
			(currentDay == undefined || currentDay - 1 == index) &&
			(d.part1.solved || d.part2.solved)
		) {
			const part1 = d.part1;
			const part2 = d.part2;

			let timeBoth = 0;

			if (part1.solved) {
				timeBoth += part1.time ?? 0;
			}
			if (part2.solved) {
				timeBoth += part2.time ?? 0;
			}

			const dayResults = stripIndents`
				\`\`\`
				Time part 1: ${
					part1.time !== null && part1.solved
						? toFixed(part1.time) + "ms"
						: "-"
				}
				Time part 2: ${
					part2.time !== null && part2.solved
						? toFixed(part2.time) + "ms"
						: "-"
				}
				Both parts: ${timeBoth !== 0 ? toFixed(timeBoth) + "ms" : "-"}
				\`\`\`
				`;

			const dayReadme = readDayReadme(config.year, index + 1).replace(
				/## Results(.|\n|\r)+## Notes/,
				`## Results\n\n${dayResults}\n\n## Notes`,
			);

			saveDayReadme(config.year, index + 1, dayReadme);
		}
	});
};

export default updateReadmes;