import * as fs from 'fs-extra';
import { rootDir, gitPullTry, completeReleaseWithChangelog } from './tool-utils';
import { unique } from '@joplin/lib/ArrayUtils';

const mobileDir = `${rootDir}/packages/app-mobile`;

// Note that it will update all the MARKETING_VERSION and
// CURRENT_PROJECT_VERSION fields, including for extensions (such as the
// ShareExtension), which is normally what we want.
// https://github.com/laurent22/joplin/pull/4963
async function updateCodeProjVersions(filePath: string) {
	const originalContent = await fs.readFile(filePath, 'utf8');
	let newContent = originalContent;
	let newVersion = '';
	let newVersionId = 0;

	// MARKETING_VERSION = 10.1.0;
	newContent = newContent.replace(/(MARKETING_VERSION = )(\d+\.\d+)\.(\d+)(.*)/g, (_match, prefix, majorMinorVersion, buildNum, suffix) => {
		const n = Number(buildNum);
		if (isNaN(n)) throw new Error(`Invalid version code: ${buildNum}`);
		newVersion = `${majorMinorVersion}.${n + 1}`;
		return `${prefix}${newVersion}${suffix}`;
	});

	// CURRENT_PROJECT_VERSION = 58;
	newContent = newContent.replace(/(CURRENT_PROJECT_VERSION = )(\d+)(.*)/g, (_match, prefix, projectVersion, suffix) => {
		const n = Number(projectVersion);
		if (isNaN(n)) throw new Error(`Invalid version code: ${projectVersion}`);
		newVersionId = n + 1;
		return `${prefix}${newVersionId}${suffix}`;
	});

	if (!newVersion) throw new Error('Could not determine new version');
	if (newContent === originalContent) throw new Error('No change was made to project file');

	await fs.writeFile(filePath, newContent, 'utf8');

	return { newVersion, newVersionId };
}

// Check that deployment targets of all projects match
// IPHONEOS_DEPLOYMENT_TARGET
// If they don't we get this kind of error:
// https://github.com/laurent22/joplin/issues/4945#issuecomment-995802706
async function checkDeploymentTargets(filePath: string) {
	const content = await fs.readFile(filePath, 'utf8');
	const re = /IPHONEOS_DEPLOYMENT_TARGET = ([0-9.]+)/g;
	let match = re.exec(content);
	let versions: string[] = [];
	while (match) {
		versions.push(match[1]);
		match = re.exec(content);
	}

	versions = unique(versions);

	if (versions.length > 1) throw new Error(`Detected mismatched IPHONEOS_DEPLOYMENT_TARGET: ${versions.join(', ')}. Set them all to the same target. In ${filePath}`);
	if (!versions.length) throw new Error(`Could not find IPHONEOS_DEPLOYMENT_TARGET in ${filePath}`);
}

async function main() {
	await gitPullTry();

	const pbxprojFilePath = `${mobileDir}/ios/Joplin.xcodeproj/project.pbxproj`;
	await checkDeploymentTargets(pbxprojFilePath);

	console.info('Updating version numbers...');

	const { newVersion, newVersionId } = await updateCodeProjVersions(pbxprojFilePath);
	console.info(`New version: ${newVersion} (${newVersionId})`);

	const tagName = `ios-v${newVersion}`;
	console.info(`Tag name: ${tagName}`);

	const changelogPath = `${rootDir}/readme/about/changelog/ios.md`;
	await completeReleaseWithChangelog(changelogPath, newVersion, tagName, 'iOS', false);
}

main().catch((error) => {
	console.error('Fatal error');
	console.error(error);
	process.exit(1);
});