Initial commit
This commit is contained in:
Chris Daßler
440
lib/ior-core.js
Normal file
440
lib/ior-core.js
Normal file
@@ -0,0 +1,440 @@
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/**
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* Core IOR resolver functionality shared between Metro and Node.js implementations
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*/
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const fs = require('node:fs');
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const path = require('node:path');
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const crypto = require('node:crypto');
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const https = require('node:https');
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const http = require('node:http');
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const { execSync } = require('node:child_process');
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/**
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* Parse remote IOR format
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* Format examples:
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* - ior:github:owner/repo:componentname@version
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* - ior:gitea:instance.com:owner/repo:componentname@version
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* - ior:ipfs:QmHash:componentname@version
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* - ior:p2p:peer-id:componentname@version
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*/
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function parseRemoteIOR(ior) {
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const parts = ior.split(':');
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if (parts.length < 4 || parts[0] !== 'ior') {
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return null;
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}
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const type = parts[1];
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switch (type) {
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case 'github': {
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// ior:github:owner/repo:componentname@version
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const [, , repoPath, componentAndVersion] = parts;
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const [owner, repo] = repoPath.split('/');
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const [componentName, version] = componentAndVersion.split('@');
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return {
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type: 'github',
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owner,
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repository: repo,
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componentName,
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version,
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};
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}
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case 'gitea': {
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// Two possible formats:
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// ior:gitea:instance.com:owner/repo:componentname@version (5 parts)
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// ior:gitea:instance.com:owner/repo/componentname@version (4 parts - component name in path)
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if (parts.length === 4) {
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// Format: ior:gitea:instance.com:owner/repo/componentname@version
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const [, , instance, pathAndVersion] = parts;
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const [fullPath, version] = pathAndVersion.split('@');
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const pathParts = fullPath.split('/');
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const owner = pathParts[0];
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const componentName = pathParts[pathParts.length - 1];
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const repository = pathParts.slice(1).join('/') || componentName;
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return {
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type: 'gitea',
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instance,
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owner,
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repository,
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componentName,
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version,
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};
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} else if (parts.length === 5) {
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// Format: ior:gitea:instance.com:owner/repo:componentname@version
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const [, , instance, repoPath, componentAndVersion] = parts;
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const repoPathParts = repoPath.split('/');
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const owner = repoPathParts[0];
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const repository = repoPathParts.slice(1).join('/');
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const [componentName, version] = componentAndVersion.split('@');
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return {
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type: 'gitea',
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instance,
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owner,
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repository,
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componentName,
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version,
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};
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}
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return null;
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}
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case 'ipfs': {
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// ior:ipfs:QmHash:componentname@version
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const [, , hash, componentAndVersion] = parts;
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const [componentName, version] = componentAndVersion.split('@');
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return {
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type: 'ipfs',
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hash,
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componentName,
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version,
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};
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}
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case 'p2p': {
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// ior:p2p:peer-id:componentname@version
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const [, , peerId, componentAndVersion] = parts;
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const [componentName, version] = componentAndVersion.split('@');
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return {
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type: 'p2p',
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peerId,
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componentName,
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version,
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};
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}
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default:
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return null;
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}
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}
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/**
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* Parse package.json to find IOR mapping
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*/
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function parsePackageJson(packagePath) {
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try {
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const content = fs.readFileSync(packagePath, 'utf-8');
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const pkg = JSON.parse(content);
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return pkg;
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} catch (err) {
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return null;
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}
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}
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/**
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* Parse package.json asynchronously
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*/
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async function parsePackageJsonAsync(packagePath) {
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try {
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const content = await fs.promises.readFile(packagePath, 'utf-8');
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const pkg = JSON.parse(content);
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return pkg;
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} catch (err) {
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return null;
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}
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}
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/**
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* Fetch content from URL
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*/
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function fetchUrl(url) {
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return new Promise((resolve, reject) => {
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const client = url.startsWith('https:') ? https : http;
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client.get(url, (res) => {
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if (res.statusCode === 302 || res.statusCode === 301) {
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// Handle redirects
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fetchUrl(res.headers.location).then(resolve).catch(reject);
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return;
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}
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if (res.statusCode !== 200) {
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reject(new Error(`HTTP ${res.statusCode}: ${url}`));
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return;
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}
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let data = '';
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res.on('data', chunk => data += chunk);
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res.on('end', () => resolve(data));
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}).on('error', reject);
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});
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}
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/**
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* Fetch URL and return as Buffer
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*/
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async function fetchUrlBuffer(url) {
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return new Promise((resolve, reject) => {
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const protocol = url.startsWith('https:') ? https : http;
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protocol.get(url, (response) => {
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// Handle redirects
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if (response.statusCode >= 300 && response.statusCode < 400 && response.headers.location) {
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return fetchUrlBuffer(response.headers.location).then(resolve).catch(reject);
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}
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if (response.statusCode !== 200) {
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reject(new Error(`HTTP ${response.statusCode}: ${url}`));
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return;
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}
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const chunks = [];
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response.on('data', (chunk) => chunks.push(chunk));
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response.on('end', () => resolve(Buffer.concat(chunks)));
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response.on('error', reject);
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}).on('error', reject);
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});
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}
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/**
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* Fetch component archive from GitHub
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*/
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async function fetchFromGitHub(config) {
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const { owner, repository, componentName, version } = config;
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// Try both tag formats: "1.0.0" and "v1.0.0"
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const tagVariants = [version, `v${version}`];
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for (const tag of tagVariants) {
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// GitHub API endpoint for tarball
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const archiveUrl = `https://api.github.com/repos/${owner}/${repository}/tarball/${tag}`;
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try {
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console.log(`[IOR Resolver] Fetching GitHub archive: ${archiveUrl}`);
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const archiveBuffer = await fetchUrlBuffer(archiveUrl);
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console.log(`[IOR Resolver] Downloaded archive from GitHub (${archiveBuffer.length} bytes)`);
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return { archive: archiveBuffer, componentName };
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} catch (err) {
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console.log(`[IOR Resolver] Failed to fetch with tag ${tag}: ${err.message}`);
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// Try next tag variant
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}
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}
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throw new Error(`Failed to fetch component from GitHub: ${owner}/${repository}@${version} (tried tags: ${tagVariants.join(', ')})`);
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}
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/**
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* Fetch component archive from Gitea
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*/
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async function fetchFromGitea(config) {
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const { instance, owner, repository, componentName, version } = config;
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// Try both tag formats: "1.0.0" and "v1.0.0"
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const tagVariants = [version, `v${version}`];
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for (const tag of tagVariants) {
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// Try to download the archive
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const archiveUrl = `https://${instance}/api/v1/repos/${owner}/${repository}/archive/${tag}.tar.gz`;
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try {
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console.log(`[IOR Resolver] Fetching Gitea archive: ${archiveUrl}`);
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const archiveBuffer = await fetchUrlBuffer(archiveUrl);
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console.log(`[IOR Resolver] Downloaded archive from Gitea (${archiveBuffer.length} bytes)`);
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return { archive: archiveBuffer, componentName };
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} catch (err) {
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console.log(`[IOR Resolver] Failed to fetch with tag ${tag}: ${err.message}`);
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// Try next tag variant
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}
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}
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throw new Error(`Failed to fetch component from Gitea: ${instance}/${owner}/${repository}@${version} (tried tags: ${tagVariants.join(', ')})`);
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}
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/**
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* Fetch component from IPFS
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*/
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async function fetchFromIPFS(config) {
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const { hash, componentName, version } = config;
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// Try multiple IPFS gateways for redundancy
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const gateways = [
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`https://ipfs.io/ipfs/${hash}`,
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`https://gateway.pinata.cloud/ipfs/${hash}`,
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`https://cloudflare-ipfs.com/ipfs/${hash}`,
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];
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for (const gateway of gateways) {
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try {
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// Try to get main file from package.json first
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const packageUrl = `${gateway}/${componentName}/${version}/package.json`;
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let mainFile = `${componentName}.ts`;
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try {
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const pkgContent = await fetchUrl(packageUrl);
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const pkgData = JSON.parse(pkgContent);
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if (pkgData.main) {
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mainFile = pkgData.main;
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}
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} catch {
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// Use default
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}
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const urls = [
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`${gateway}/${componentName}/${version}/${mainFile}`,
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`${gateway}/${componentName}/${version}/index.ts`,
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`${gateway}/${componentName}/${version}/index.tsx`,
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];
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for (const url of urls) {
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try {
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const content = await fetchUrl(url);
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return { content, url };
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} catch {
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// Try next URL
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}
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}
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} catch {
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// Try next gateway
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}
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}
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throw new Error(`Failed to fetch from IPFS: ${hash}/${componentName}@${version}`);
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}
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/**
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* Extract archive to directory
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*/
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function extractArchive(archiveBuffer, targetDir, stripComponents = 1) {
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const tempArchive = path.join(targetDir, '..', `temp-${Date.now()}.tar.gz`);
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// Ensure target directory exists
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if (!fs.existsSync(targetDir)) {
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fs.mkdirSync(targetDir, { recursive: true });
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}
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// Write archive to temp file
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fs.writeFileSync(tempArchive, archiveBuffer);
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try {
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// Extract archive
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execSync(`tar -xzf "${tempArchive}" -C "${targetDir}" --strip-components=${stripComponents}`, {
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stdio: 'pipe'
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});
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// Clean up temp archive
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fs.unlinkSync(tempArchive);
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} catch (err) {
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// Clean up on failure
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if (fs.existsSync(tempArchive)) {
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fs.unlinkSync(tempArchive);
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}
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throw err;
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}
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}
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/**
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* Find entry point in a directory
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*/
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function findEntryPoint(dir, componentName) {
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let entryPath = null;
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// Check package.json for main field
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const packageJsonPath = path.join(dir, 'package.json');
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if (fs.existsSync(packageJsonPath)) {
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try {
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const packageJson = JSON.parse(fs.readFileSync(packageJsonPath, 'utf-8'));
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if (packageJson.main) {
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const mainPath = path.join(dir, packageJson.main);
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if (fs.existsSync(mainPath)) {
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return mainPath;
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}
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}
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} catch {
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// Ignore package.json errors
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}
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}
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// Try common entry points
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const possibleEntries = [
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path.join(dir, 'index.ts'),
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path.join(dir, 'index.tsx'),
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path.join(dir, 'index.js'),
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path.join(dir, 'index.jsx'),
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path.join(dir, `${componentName}.ts`),
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path.join(dir, `${componentName}.tsx`),
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path.join(dir, `${componentName}.js`),
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path.join(dir, `${componentName}.jsx`),
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];
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for (const entry of possibleEntries) {
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if (fs.existsSync(entry)) {
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return entry;
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}
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}
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return null;
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}
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/**
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* Generate cache hash for an IOR
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*/
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function generateCacheHash(ior) {
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return crypto.createHash('sha256').update(ior).digest('hex');
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}
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/**
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* Scan components directory to build local IOR mappings
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*/
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function buildLocalIORMappings(projectRoot) {
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const componentsDir = path.join(projectRoot, 'src', 'components');
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const mappings = new Map();
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try {
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const componentDirs = fs.readdirSync(componentsDir, { withFileTypes: true });
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for (const dir of componentDirs) {
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if (dir.isDirectory()) {
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const componentPath = path.join(componentsDir, dir.name);
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const versions = fs.readdirSync(componentPath, { withFileTypes: true });
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for (const version of versions) {
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if (version.isDirectory()) {
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const versionPath = path.join(componentPath, version.name);
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const packagePath = path.join(versionPath, 'package.json');
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const pkg = parsePackageJson(packagePath);
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if (pkg?.metatrom?.ior) {
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// Map both with and without esm: prefix
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const ior = pkg.metatrom.ior;
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const mainFile = pkg.main || 'index.ts';
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const resolvedPath = path.join(versionPath, mainFile);
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mappings.set(`ior:esm:${ior}`, resolvedPath);
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mappings.set(`ior:${ior}`, resolvedPath);
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console.log(`[IOR Resolver] Mapped local: ${ior} -> ${resolvedPath}`);
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}
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}
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}
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}
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}
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} catch (err) {
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console.error('[IOR Resolver] Error building local mappings:', err);
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}
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return mappings;
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}
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module.exports = {
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parseRemoteIOR,
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parsePackageJson,
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parsePackageJsonAsync,
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fetchUrl,
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fetchUrlBuffer,
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fetchFromGitHub,
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fetchFromGitea,
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fetchFromIPFS,
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extractArchive,
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findEntryPoint,
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generateCacheHash,
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buildLocalIORMappings,
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};
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Reference in New Issue
Block a user