cloud creation

src/edge/edge.controller.ts

@@ -0,0 +1,15 @@
+import { Controller, Get, Header } from '@nestjs/common';
+import { EdgeService } from './edge.service';
+
+@Controller('edge')
+export class EdgeController {
+  constructor(private readonly edge: EdgeService) {}
+
+  @Get()
+  @Header('Cache-Control', 'no-store')
+  @Header('Pragma', 'no-cache')
+  @Header('Expires', '0')
+  findAll() {
+    return this.edge.findAll();
+  }
+}

src/edge/edge.module.ts

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+import { Module } from '@nestjs/common';
+import { EdgeController } from './edge.controller';
+import { EdgeService } from './edge.service';
+
+@Module({
+  controllers: [EdgeController],
+  providers: [EdgeService],
+})
+export class EdgeModule {}

src/edge/edge.service.ts

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+import { Injectable } from '@nestjs/common';
+import { DbService } from '../db/db.service';
+
+type EdgeRow = {
+  id: string;
+  name: string;
+  tag_count: number;
+  current_tag_count: number;
+  live_tag_count: number;
+  last_data_at: Date | null;
+  created_at: Date;
+  updated_at: Date;
+};
+
+type EdgeItem = {
+  id: string;
+  name: string;
+  tagCount: number;
+  currentTagCount: number;
+  liveTagCount: number;
+  lastDataAt: Date | null;
+  createdAt: Date;
+  updatedAt: Date;
+};
+
+type EdgeResponse = {
+  items: EdgeItem[];
+};
+
+@Injectable()
+export class EdgeService {
+  constructor(private readonly db: DbService) {}
+
+  // Возвращает каталог буровых с легкой сводкой по свежести данных для dashboard UI.
+  async findAll(): Promise<EdgeResponse> {
+    const result = await this.db.query<EdgeRow>(`
+      SELECT
+        e.id,
+        e.name,
+        count(DISTINCT et.tag_id)::integer AS tag_count,
+        count(DISTINCT cv.tag_id)::integer AS current_tag_count,
+        count(DISTINCT cv.tag_id) FILTER (
+          WHERE cv.time >= now() - INTERVAL '30 seconds'
+        )::integer AS live_tag_count,
+        max(cv.time) AS last_data_at,
+        e.created_at,
+        e.updated_at
+      FROM edge AS e
+      LEFT JOIN edge_tag AS et
+        ON et.edge_id = e.id
+      LEFT JOIN current_values AS cv
+        ON cv.edge_id = e.id
+        AND cv.tag_id = et.tag_id
+      GROUP BY e.id, e.name, e.created_at, e.updated_at
+      ORDER BY e.name ASC, e.id ASC
+    `);
+
+    return {
+      items: result.rows.map((row) => ({
+        id: row.id,
+        name: row.name,
+        tagCount: row.tag_count,
+        currentTagCount: row.current_tag_count,
+        liveTagCount: row.live_tag_count,
+        lastDataAt: row.last_data_at,
+        createdAt: row.created_at,
+        updatedAt: row.updated_at,
+      })),
+    };
+  }
+}