import { execSync } from 'node:child_process';
import fs from 'node:fs';
import path from 'node:path';
import { fileURLToPath } from 'node:url';

const __filename = fileURLToPath(import.meta.url);
const __dirname = path.dirname(__filename);

const FIRMWARE_DIR = path.resolve(__dirname, '../vendor/firmware');
const OUTPUT_FILE = path.resolve(__dirname, '../src/constants/versions.ts');

function getVersions() {
    try {
        // Fetch tags from the meshtastic remote
        execSync('git fetch meshtastic --tags', { cwd: FIRMWARE_DIR, encoding: 'utf-8' });
        
        // Run git tag in the firmware directory
        const output = execSync('git tag', { cwd: FIRMWARE_DIR, encoding: 'utf-8' });
        
        // Filter and sort tags
        // We are looking for tags like v2.5.0...
        const tags = output
            .split('\n')
            .map(tag => tag.trim())
            .filter(tag => tag.startsWith('v') && tag.includes('.'))
            // Simple sort for now, ideally semver sort but string sort works okay for fixed format vX.Y.Z
            // We want reverse sort to show latest first
            .sort((a, b) => b.localeCompare(a, undefined, { numeric: true, sensitivity: 'base' }));

        return tags;
    } catch (error) {
        console.error('Error getting git tags:', error);
        return [];
    }
}

function generateFile(versions) {
    const content = `// This file is auto-generated by scripts/generate-versions.js
export const VERSIONS = ${JSON.stringify(versions, null, '\t')} as const;

export type FirmwareVersion = typeof VERSIONS[number];
`;

    fs.writeFileSync(OUTPUT_FILE, content);
    console.log(`Generated ${OUTPUT_FILE} with ${versions.length} versions`);
}

const versions = getVersions();
generateFile(versions);