Send to by node name or broadcast sentinel (GET-free resolution via node DB) (#9)

src/mesh/mesh.controller.ts

@@ -13,7 +13,6 @@ import {
   ApiResponse,
   ApiTags,
 } from '@nestjs/swagger';
-import { BROADCAST_ADDR } from './codec.js';
 import { MeshService } from './mesh.service.js';
 
 export class SendTextDto {
@@ -22,7 +21,7 @@ export class SendTextDto {
   @ApiProperty({
     required: false,
     description:
-      'Decimal node number, "!b", or "broadcast" (defaults to broadcast)',
+      'Send target. Resolution order: omitted or "" → broadcast (0xffffffff); number → used as-is (integer in 1..0xffffffff); numeric string → that node number; "!b" or "broadcast" (case-insensitive) → broadcast; anything else is looked up by name — exact long/short name, then unique substring. DMs are unicast and wantAck-tracked via GET /api/messages (pending→delivered/failed); broadcasts stay pending because firmware strips want_ack.',
     example: '!b',
   })
   to?: string | number;
@@ -58,7 +57,7 @@ export class MeshController {
   @ApiOperation({
     summary: 'Send a text message over the mesh',
     description:
-      'Queues a TEXT_MESSAGE_APP packet on the pinned test channel (index 2, "testowy" — never the primary channel). Returns the Meshtastic packet id.',
+      'Queues a TEXT_MESSAGE_APP packet to the resolved target (node number, node name, or broadcast). DMs are unicast and wantAck-tracked via GET /api/messages; broadcasts stay pending because firmware strips want_ack. All sends ride the pinned test channel (index 2, "testowy" — never the primary channel) regardless of DM or broadcast, since modern firmware PKI handles unicast encryption/channel anyway. Returns the Meshtastic packet id.',
   })
   @ApiResponse({
     status: 200,
@@ -71,15 +70,13 @@ export class MeshController {
     if (typeof body?.text !== 'string' || body.text.length === 0) {
       throw new BadRequestException('text must be a non-empty string');
     }
-    let to = BROADCAST_ADDR;
-    const t = body.to;
-    if (t !== undefined && t !== '!b' && t !== 'broadcast') {
-      const n = typeof t === 'number' ? t : Number(String(t));
-      if (!Number.isFinite(n))
-        throw new BadRequestException(
-          'to must be a decimal node number, "!b", or "broadcast"',
-        );
-      to = n;
+    let to: number;
+    try {
+      to = await this.mesh.resolveDest(body.to);
+    } catch (err) {
+      throw new BadRequestException(
+        err instanceof Error ? err.message : String(err),
+      );
     }
     return { id: await this.mesh.sendText(to, body.text) };
   }