feat: Add automated MPL-2.0 license header validation (#2995)

improve the suggestion

improve the code

.github/workflows/build.yml

@@ -54,6 +54,31 @@ jobs:
       - name: Run HTMLHint
         run: npx htmlhint "src" --config .htmlhintrc
 
+      - name: Check file headers
+        run: |
+          echo "Checking for MPL-2.0 license headers in changed files..."
+
+          # Get list of changed files (comparing with base branch)
+          if [ "${{ github.event_name }}" == "pull_request" ]; then
+            BASE_SHA="${{ github.event.pull_request.base.sha }}"
+          else
+            BASE_SHA="${{ github.event.before }}"
+          fi
+
+          # Get changed files
+          CHANGED_FILES=$(git diff --name-only --diff-filter=ACMRT $BASE_SHA HEAD | grep -E '\.(ts|js|html|css|scss)$' | grep -v -E '\.(spec\.ts|spec\.js|d\.ts)$' | grep -v -E '(environment\.ts|environment\.prod\.ts|polyfills\.ts|node_modules)' || true)
+
+          if [ -z "$CHANGED_FILES" ]; then
+            echo "✅ No relevant files changed"
+            exit 0
+          fi
+
+          echo "📋 Checking $(echo "$CHANGED_FILES" | wc -l) changed file(s)..."
+          echo "$CHANGED_FILES"
+
+          # Run header check on changed files
+          echo "$CHANGED_FILES" | xargs node scripts/check-file-headers.js
+
       - name: Run production build
         run: npm run build:prod
 

.github/workflows/license-headers.yml

@@ -0,0 +1,103 @@
+name: License Header Check
+
+on:
+  pull_request:
+    branches: [main, dev, dev-angular-19]
+    paths:
+      - 'src/**/*.ts'
+      - 'src/**/*.js'
+      - 'src/**/*.html'
+      - 'src/**/*.css'
+      - 'src/**/*.scss'
+  workflow_dispatch: # Allow manual trigger
+
+jobs:
+  check-headers:
+    name: Validate MPL-2.0 Headers
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Use Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '22'
+          cache: 'npm'
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Check file headers
+        run: |
+          echo "Checking for MPL-2.0 license headers in changed files..."
+
+          # Get list of changed files in PR
+          BASE_SHA="${{ github.event.pull_request.base.sha }}"
+          HEAD_SHA="${{ github.event.pull_request.head.sha }}"
+
+          # Get changed files (added, copied, modified, renamed, type changed)
+          CHANGED_FILES=$(git diff --name-only --diff-filter=ACMRT $BASE_SHA $HEAD_SHA | \
+            grep -E '\.(ts|js|html|css|scss)$' | \
+            grep -v -E '\.(spec\.ts|spec\.js|d\.ts)$' | \
+            grep -v -E '(environment\.ts|environment\.prod\.ts|polyfills\.ts|setup-jest\.ts|jest\.config\.ts|node_modules)' || true)
+
+          if [ -z "$CHANGED_FILES" ]; then
+            echo "No relevant source files changed in this PR"
+            exit 0
+          fi
+
+          # Count files
+          FILE_COUNT=$(echo "$CHANGED_FILES" | wc -l)
+          echo "Checking $FILE_COUNT changed file(s)..."
+          echo ""
+          echo "$CHANGED_FILES"
+          echo ""
+
+          # Run the header check
+          echo "$CHANGED_FILES" | xargs node scripts/check-file-headers.js
+
+          if [ $? -eq 0 ]; then
+            echo ""
+            echo "All changed files have valid MPL-2.0 headers!"
+          else
+            echo ""
+            echo "Header validation failed!"
+            echo ""
+            echo "To fix locally:"
+            echo "   npm run headers:add -- <file-path>"
+            echo ""
+            echo "   Or add the header manually (see docs/FILE_HEADER_VALIDATION.md)"
+            exit 1
+          fi
+
+      - name: Comment on PR (if failed)
+        if: failure() && github.event_name == 'pull_request'
+        uses: actions/github-script@v7
+        with:
+          script: |
+            github.rest.issues.createComment({
+              issue_number: context.issue.number,
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              body: '## License Header Validation Failed\n\n' +
+                    'Some files are missing the required MPL-2.0 license header.\n\n' +
+                    '### How to fix:\n\n' +
+                    '1. **Automatically add headers:**\n' +
+                    '   ```bash\n' +
+                    '   npm run headers:add -- <file-path>\n' +
+                    '   ```\n\n' +
+                    '2. **Or manually add the header:**\n' +
+                    '   ```typescript\n' +
+                    '   /**\n' +
+                    '    * Copyright since 2025 Mifos Initiative\n' +
+                    '    *\n' +
+                    '    * This Source Code Form is subject to the terms of the Mozilla Public\n' +
+                    '    * License, v. 2.0. If a copy of the MPL was not distributed with this\n' +
+                    '    * file, You can obtain one at http://mozilla.org/MPL/2.0/.\n' +
+                    '    */\n' +
+                    '   ```\n\n' +
+                    '3. **Check the build logs above** to see which files need headers.\n\n' +
+                    'For more information, see [FILE_HEADER_VALIDATION.md](https://github.com/' + context.repo.owner + '/' + context.repo.repo + '/blob/dev/web-app/docs/FILE_HEADER_VALIDATION.md)'
+            })

package.json

@@ -32,7 +32,9 @@
     "playwright": "playwright test",
     "playwright:ui": "playwright test --ui",
     "playwright:headed": "playwright test --headed",
-    "playwright:debug": "playwright test --debug"
+    "playwright:debug": "playwright test --debug",
+    "headers:check": "node scripts/check-file-headers.js",
+    "headers:add": "node scripts/add-file-headers.js"
   },
   "dependencies": {
     "@angular/animations": "20.3.15",
@@ -134,8 +136,15 @@
     "npm": ">= 8.11.0"
   },
   "lint-staged": {
-    "*.{js,jsx,ts,tsx}": "eslint --cache",
-    "*.{css,scss}": "stylelint",
+    "*.{js,jsx,ts,tsx}": [
+      "node scripts/check-file-headers.js",
+      "eslint --cache"
+    ],
+    "*.{css,scss}": [
+      "node scripts/check-file-headers.js",
+      "stylelint"
+    ],
+    "*.html": "node scripts/check-file-headers.js",
     "*": "prettier --check --ignore-unknown"
   },
   "overrides": {

scripts/add-file-headers.js

@@ -0,0 +1,218 @@
+#!/usr/bin/env node
+
+/**
+ * Copyright since 2025 Mifos Initiative
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+const fs = require('fs');
+const path = require('path');
+
+// Headers to add based on file type
+const HEADERS = {
+  code: `/**
+ * Copyright since 2025 Mifos Initiative
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+`,
+  html: `<!--
+  Copyright since 2025 Mifos Initiative
+
+  This Source Code Form is subject to the terms of the Mozilla Public
+  License, v. 2.0. If a copy of the MPL was not distributed with this
+  file, You can obtain one at http://mozilla.org/MPL/2.0/.
+-->
+
+`
+};
+
+// File extensions
+const FILE_EXTENSIONS = {
+  code: [
+    '.ts',
+    '.js',
+    '.scss',
+    '.css'
+  ],
+  html: ['.html']
+};
+
+const EXCLUDE_PATTERNS = [
+  'node_modules',
+  'dist',
+  'coverage',
+  '.angular',
+  'e2e',
+  'cypress',
+  'playwright',
+  '.husky',
+  'setup-jest.ts',
+  'jest.config.ts',
+  'cypress.config.ts',
+  'playwright.config.ts',
+  'tailwind.config.js',
+  'proxy.conf.js',
+  'proxy.localhost.conf.js',
+  'version.js',
+  'environment.ts',
+  'environment.prod.ts',
+  'polyfills.ts',
+  'typings.d.ts',
+  'global.d.ts',
+  '.spec.ts',
+  '.spec.js',
+  'tsconfig'
+];
+
+function shouldExclude(filePath) {
+  const normalizedPath = filePath.replace(/\\/g, '/');
+  return EXCLUDE_PATTERNS.some((pattern) => {
+    if (pattern.startsWith('.') && pattern.lastIndexOf('.') > 0) {
+      return normalizedPath.endsWith(pattern);
+    }
+    return normalizedPath.includes(pattern);
+  });
+}
+
+function getHeaderType(filePath) {
+  const ext = path.extname(filePath).toLowerCase();
+
+  if (FILE_EXTENSIONS.html.includes(ext)) {
+    return 'html';
+  }
+
+  if (FILE_EXTENSIONS.code.includes(ext)) {
+    return 'code';
+  }
+
+  return null;
+}
+
+/**
+ * Check if file already has a header
+ */
+function hasHeader(content, headerType) {
+  if (headerType === 'code') {
+    return content.includes('Copyright since 2025 Mifos Initiative') && content.includes('Mozilla Public License');
+  }
+
+  if (headerType === 'html') {
+    return content.includes('Copyright since 2025 Mifos Initiative') && content.includes('Mozilla Public License');
+  }
+
+  return false;
+}
+
+/**
+ * Add header to a file
+ */
+function addHeaderToFile(filePath, dryRun = false) {
+  // Skip excluded files
+  if (shouldExclude(filePath)) {
+    console.log(`⏭️  Skipping ${filePath} (excluded)`);
+    return false;
+  }
+
+  const headerType = getHeaderType(filePath);
+
+  if (!headerType) {
+    console.log(`⏭️  Skipping ${filePath} (unsupported file type)`);
+    return false;
+  }
+
+  let content;
+  try {
+    content = fs.readFileSync(filePath, 'utf8');
+  } catch (error) {
+    console.error(`❌ Error reading ${filePath}: ${error.message}`);
+    return false;
+  }
+
+  // Skip if file already has a header
+  if (hasHeader(content, headerType)) {
+    console.log(`✓  ${filePath} (already has header)`);
+    return false;
+  }
+
+  // Skip empty files
+  if (content.trim().length === 0) {
+    console.log(`⏭️  Skipping ${filePath} (empty file)`);
+    return false;
+  }
+
+  const header = HEADERS[headerType];
+  const newContent = header + content;
+
+  if (dryRun) {
+    console.log(`🔍 Would add header to: ${filePath}`);
+    return true;
+  }
+
+  try {
+    fs.writeFileSync(filePath, newContent, 'utf8');
+    console.log(`✅ Added header to: ${filePath}`);
+    return true;
+  } catch (error) {
+    console.error(`❌ Error writing ${filePath}: ${error.message}`);
+    return false;
+  }
+}
+
+/**
+ * Main function
+ */
+function main() {
+  const args = process.argv.slice(2);
+
+  // Parse flags
+  const dryRun = args.includes('--dry-run') || args.includes('-d');
+  const files = args.filter((arg) => !arg.startsWith('--') && !arg.startsWith('-'));
+
+  if (files.length === 0) {
+    console.log('Usage: node add-file-headers.js [options] <file1> <file2> ...');
+    console.log('\nOptions:');
+    console.log('  --dry-run, -d    Show what would be done without making changes');
+    console.log('\nExample:');
+    console.log('  node add-file-headers.js --dry-run src/app/app.component.ts');
+    console.log('  node add-file-headers.js src/app/**/*.ts');
+    process.exit(0);
+  }
+
+  if (dryRun) {
+    console.log('🔍 DRY RUN MODE - No files will be modified\n');
+  }
+
+  let modifiedCount = 0;
+  let skippedCount = 0;
+
+  files.forEach((filePath) => {
+    if (!fs.existsSync(filePath)) {
+      console.error(`❌ File not found: ${filePath}`);
+      skippedCount++;
+      return;
+    }
+
+    const modified = addHeaderToFile(filePath, dryRun);
+    if (modified) {
+      modifiedCount++;
+    } else {
+      skippedCount++;
+    }
+  });
+
+  console.log('\n' + '='.repeat(50));
+  console.log(`Summary: ${modifiedCount} file(s) ${dryRun ? 'would be' : ''} modified, ${skippedCount} skipped`);
+
+  if (dryRun && modifiedCount > 0) {
+    console.log('\n💡 Run without --dry-run to apply changes');
+  }
+}
+
+main();

scripts/check-file-headers.js

@@ -0,0 +1,221 @@
+#!/usr/bin/env node
+
+/**
+ * Copyright since 2025 Mifos Initiative
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+const fs = require('fs');
+const path = require('path');
+
+// Expected header patterns for different file types
+const HEADERS = {
+  mpl: [
+    '/**',
+    ' * Copyright since 2025 Mifos Initiative',
+    ' *',
+    ' * This Source Code Form is subject to the terms of the Mozilla Public',
+    ' * License, v. 2.0. If a copy of the MPL was not distributed with this',
+    ' * file, You can obtain one at http://mozilla.org/MPL/2.0/.',
+    ' */'
+  ],
+  html: [
+    '<!--',
+    '  Copyright since 2025 Mifos Initiative',
+    '',
+    '  This Source Code Form is subject to the terms of the Mozilla Public',
+    '  License, v. 2.0. If a copy of the MPL was not distributed with this',
+    '  file, You can obtain one at http://mozilla.org/MPL/2.0/.',
+    '-->'
+  ]
+};
+
+// File extensions that should have headers
+const FILE_EXTENSIONS = {
+  code: [
+    '.ts',
+    '.js',
+    '.scss',
+    '.css'
+  ],
+  html: ['.html']
+};
+
+// Files/patterns to exclude from header checks
+const EXCLUDE_PATTERNS = [
+  'node_modules',
+  'dist',
+  'coverage',
+  '.angular',
+  'e2e',
+  'cypress',
+  'playwright',
+  '.husky',
+  'setup-jest.ts',
+  'jest.config.ts',
+  'cypress.config.ts',
+  'playwright.config.ts',
+  'tailwind.config.js',
+  'proxy.conf.js',
+  'proxy.localhost.conf.js',
+  'version.js',
+  'environment.ts',
+  'environment.prod.ts',
+  'polyfills.ts',
+  'typings.d.ts',
+  'global.d.ts',
+  '.spec.ts',
+  '.spec.js',
+  'tsconfig'
+];
+
+/**
+ * Check if a file should be excluded from header validation
+ */
+function shouldExclude(filePath) {
+  const normalizedPath = filePath.replace(/\\/g, '/');
+  return EXCLUDE_PATTERNS.some((pattern) => {
+    if (pattern.startsWith('.') && pattern.lastIndexOf('.') > 0) {
+      return normalizedPath.endsWith(pattern);
+    }
+
+    return normalizedPath.includes(pattern);
+  });
+}
+
+/**
+ * Get the expected header for a file based on its extension
+ */
+function getExpectedHeader(filePath) {
+  const ext = path.extname(filePath).toLowerCase();
+
+  if (FILE_EXTENSIONS.html.includes(ext)) {
+    return HEADERS.html;
+  }
+
+  if (FILE_EXTENSIONS.code.includes(ext)) {
+    return HEADERS.mpl;
+  }
+
+  return null;
+}
+
+/**
+ * Normalize whitespace for comparison
+ */
+function normalizeWhitespace(str) {
+  return str.trim().replace(/\s+/g, ' ');
+}
+
+/**
+ * Check if file has the correct header
+ */
+function hasValidHeader(filePath) {
+  if (shouldExclude(filePath)) {
+    return true; // Skip excluded files
+  }
+
+  const expectedHeader = getExpectedHeader(filePath);
+  if (!expectedHeader) {
+    return true; // Skip files without defined header requirements
+  }
+
+  let content;
+  try {
+    content = fs.readFileSync(filePath, 'utf8');
+  } catch (error) {
+    console.error(`Error reading file ${filePath}: ${error.message}`);
+    return false;
+  }
+
+  // Handle empty files
+  if (content.trim().length === 0) {
+    return true; // Allow empty files
+  }
+
+  const lines = content.split(/\r?\n/);
+  const headerLineCount = expectedHeader.length;
+
+  let startLine = 0;
+  if (lines[0] && lines[0].startsWith('#!')) {
+    startLine = 1;
+    if (lines[1] !== undefined && lines[1].trim() === '') {
+      startLine = 2;
+    }
+  }
+
+  // Check if file has enough lines
+  if (lines.length < startLine + headerLineCount) {
+    return false;
+  }
+
+  // Compare header lines
+  for (let i = 0; i < headerLineCount; i++) {
+    const actualLine = normalizeWhitespace(lines[startLine + i]);
+    const expectedLine = normalizeWhitespace(expectedHeader[i]);
+
+    if (actualLine !== expectedLine) {
+      return false;
+    }
+  }
+
+  return true;
+}
+
+/**
+ * Format the expected header for display
+ */
+function formatExpectedHeader(header) {
+  return '\n' + header.join('\n') + '\n';
+}
+
+/**
+ * Main function
+ */
+function main() {
+  const args = process.argv.slice(2);
+
+  if (args.length === 0) {
+    console.error('Usage: node check-file-headers.js <file1> <file2> ...');
+    process.exit(1);
+  }
+
+  const filesWithoutHeaders = [];
+
+  args.forEach((filePath) => {
+    if (!fs.existsSync(filePath)) {
+      console.error(`File not found: ${filePath}`);
+      return;
+    }
+
+    if (!hasValidHeader(filePath)) {
+      filesWithoutHeaders.push(filePath);
+    }
+  });
+
+  if (filesWithoutHeaders.length > 0) {
+    console.error('\n❌ Header validation failed!\n');
+    console.error('The following files are missing the required MPL-2.0 license header:\n');
+
+    filesWithoutHeaders.forEach((file) => {
+      console.error(`  - ${file}`);
+      const expectedHeader = getExpectedHeader(file);
+      if (expectedHeader) {
+        console.error(`\n    Expected header:${formatExpectedHeader(expectedHeader)}`);
+      }
+    });
+
+    console.error('\n💡 Please add the MPL-2.0 license header to these files.');
+    console.error('   Refer to existing files for the correct format.\n');
+
+    process.exit(1);
+  }
+
+  console.log('✅ All files have valid headers');
+  process.exit(0);
+}
+
+main();