Refactor: move services to components, add route modules

Co-authored-by: Cursor <cursoragent@cursor.com>

routes/lightning.js

@@ -0,0 +1,86 @@
+const express = require('express');
+const router = express.Router();
+const lightning = require('../components/lightning');
+
+/**
+ * @swagger
+ * /api/validate-address:
+ *   post:
+ *     summary: Validate a Lightning address
+ *     description: |
+ *       Validate a Lightning address without performing a redemption.
+ *       Checks format validity and tests LNURLp resolution.
+ *       
+ *       Returns information about the Lightning address capabilities
+ *       including min/max sendable amounts and comment allowance.
+ *     tags: [Validation]
+ *     requestBody:
+ *       required: true
+ *       content:
+ *         application/json:
+ *           schema:
+ *             $ref: '#/components/schemas/ValidateAddressRequest'
+ *     responses:
+ *       200:
+ *         description: Validation completed (check 'valid' field for result)
+ *         content:
+ *           application/json:
+ *             schema:
+ *               $ref: '#/components/schemas/ValidateAddressResponse'
+ *       400:
+ *         $ref: '#/components/responses/BadRequest'
+ *       429:
+ *         $ref: '#/components/responses/TooManyRequests'
+ */
+router.post('/validate-address', async (req, res) => {
+  const { lightningAddress } = req.body;
+
+  if (!lightningAddress) {
+    return res.status(400).json({
+      success: false,
+      error: 'Lightning address is required'
+    });
+  }
+
+  try {
+    const isValid = lightning.validateLightningAddress(lightningAddress);
+    
+    if (!isValid) {
+      return res.json({
+        success: false,
+        valid: false,
+        error: 'Invalid Lightning address format'
+      });
+    }
+
+    const { domain } = lightning.parseLightningAddress(lightningAddress);
+    const lnurlpUrl = lightning.getLNURLpEndpoint(lightningAddress);
+    
+    try {
+      const lnurlpResponse = await lightning.fetchLNURLpResponse(lnurlpUrl);
+      
+      res.json({
+        success: true,
+        valid: true,
+        domain,
+        minSendable: lightning.millisatsToSats(lnurlpResponse.minSendable),
+        maxSendable: lightning.millisatsToSats(lnurlpResponse.maxSendable),
+        commentAllowed: lnurlpResponse.commentAllowed || 0
+      });
+    } catch (error) {
+      res.json({
+        success: false,
+        valid: false,
+        error: `Lightning address resolution failed: ${error.message}`
+      });
+    }
+  } catch (error) {
+    res.status(400).json({
+      success: false,
+      valid: false,
+      error: error.message
+    });
+  }
+});
+
+module.exports = router;