1/**
2 * Copyright 2026 Google LLC
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *     http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16 
17import swc from '@swc/core';
18import fs from 'node:fs';
19import path from 'node:path';
20 
21const HEX_COLOR_REGEX = /#[0-9A-Fa-f]{6}/;
22 
23async function validateComponent(filePath) {
24  const code = fs.readFileSync(filePath, 'utf-8');
25  const filename = path.basename(filePath);
26  try {
27    const ast = await swc.parse(code, { syntax: "typescript", tsx: true });
28    let hasInterface = false;
29    let tailwindIssues = [];
30 
31    console.log("🔍 Scanning AST...");
32 
33    const walk = (node) => {
34      if (!node) return;
35      if (node.type === 'TsInterfaceDeclaration' && node.id.value.endsWith('Props')) hasInterface = true;
36      if (node.type === 'JSXAttribute' && node.name.name === 'className') {
37        if (node.value?.value && HEX_COLOR_REGEX.test(node.value.value)) tailwindIssues.push(node.value.value);
38      }
39      for (const key in node) { if (node[key] && typeof node[key] === 'object') walk(node[key]); }
40    };
41    walk(ast);
42 
43    console.log(`--- Validation for: ${filename} ---`);
44    if (hasInterface) {
45      console.log("✅ Props declaration found.");
46    } else {
47      console.error("❌ MISSING: Props interface (must end in 'Props').");
48    }
49 
50    if (tailwindIssues.length === 0) {
51      console.log("✅ No hardcoded hex values found.");
52    } else {
53      console.error(`❌ STYLE: Found ${tailwindIssues.length} hardcoded hex codes.`);
54      tailwindIssues.forEach(hex => console.error(`   - ${hex}`));
55    }
56 
57    if (hasInterface && tailwindIssues.length === 0) {
58      console.log("\n✨ COMPONENT VALID.");
59      process.exit(0);
60    } else {
61      console.error("\n🚫 VALIDATION FAILED.");
62      process.exit(1);
63    }
64  } catch (err) {
65    console.error("❌ PARSE ERROR:", err.message);
66    process.exit(1);
67  }
68}
69 
70validateComponent(process.argv[2]);
71