server-ts: Convert routes/custom

src/routes/custom.ts

@@ -0,0 +1,89 @@
+import log = require('../services/log');
+import fileService = require('./api/files');
+import scriptService = require('../services/script');
+import cls = require('../services/cls');
+import sql = require('../services/sql');
+import becca = require('../becca/becca');
+import { Request, Response, Router } from 'express';
+
+function handleRequest(req: Request, res: Response) {
+    // express puts content after first slash into 0 index element
+
+    const path = req.params.path + req.params[0];
+
+    const attributeIds = sql.getColumn<string>("SELECT attributeId FROM attributes WHERE isDeleted = 0 AND type = 'label' AND name IN ('customRequestHandler', 'customResourceProvider')");
+
+    const attrs = attributeIds.map(attrId => becca.getAttribute(attrId));
+
+    for (const attr of attrs) {
+        if (!attr?.value.trim()) {
+            continue;
+        }
+
+        const regex = new RegExp(`^${attr.value}$`);
+        let match;
+
+        try {
+            match = path.match(regex);
+        }
+        catch (e: any) {
+            log.error(`Testing path for label '${attr.attributeId}', regex '${attr.value}' failed with error: ${e.message}, stack: ${e.stack}`);
+            continue;
+        }
+
+        if (!match) {
+            continue;
+        }
+
+        if (attr.name === 'customRequestHandler') {
+            const note = attr.getNote();
+
+            log.info(`Handling custom request '${path}' with note '${note.noteId}'`);
+
+            try {
+                scriptService.executeNote(note, {
+                    pathParams: match.slice(1),
+                    req,
+                    res
+                });
+            }
+            catch (e: any) {
+                log.error(`Custom handler '${note.noteId}' failed with: ${e.message}, ${e.stack}`);
+
+                res.setHeader("Content-Type", "text/plain")
+                    .status(500)
+                    .send(e.message);
+            }
+        }
+        else if (attr.name === 'customResourceProvider') {
+            fileService.downloadNoteInt(attr.noteId, res);
+        }
+        else {
+            throw new Error(`Unrecognized attribute name '${attr.name}'`);
+        }
+
+        return; // only the first handler is executed
+    }
+
+    const message = `No handler matched for custom '${path}' request.`;
+
+    log.info(message);
+    res.setHeader("Content-Type", "text/plain")
+        .status(404)
+        .send(message);
+}
+
+function register(router: Router) {
+    // explicitly no CSRF middleware since it's meant to allow integration from external services
+
+    router.all('/custom/:path*', (req: Request, res: Response, next) => {
+        cls.namespace.bindEmitter(req);
+        cls.namespace.bindEmitter(res);
+
+        cls.init(() => handleRequest(req, res));
+    });
+}
+
+export = {
+    register
+};