Merge pull request 'BUR-58 Добавлена поддержка работы с камерой' (#4) from bur-58 into dev

Reviewed-on: #4

migrations/0001_camera.sql

@@ -0,0 +1,8 @@
+CREATE TABLE IF NOT EXISTS camera (
+  edge varchar NOT NULL,
+  protocol varchar NOT NULL,
+  source varchar NOT NULL,
+  PRIMARY KEY (edge, protocol, source)
+);
+
+CREATE INDEX IF NOT EXISTS camera_edge_idx ON camera (edge);

src/app.module.ts

@@ -1,4 +1,5 @@
 import { Module } from '@nestjs/common';
+import { CameraModule } from './camera/camera.module';
 import { CurrentModule } from './current/current.module';
 import { DbModule } from './db/db.module';
 import { EdgeModule } from './edge/edge.module';
@@ -10,6 +11,7 @@ import { TagModule } from './tag/tag.module';
 @Module({
   imports: [
     DbModule,
+    CameraModule,
     IngestModule,
     EdgeModule,
     CurrentModule,

src/camera/camera.controller.ts

@@ -0,0 +1,16 @@
+import { Controller, Get, Header, Query } from '@nestjs/common';
+import { CameraService } from './camera.service';
+import { GetCamerasDto } from './dto/get-cameras.dto';
+
+@Controller('camera')
+export class CameraController {
+  constructor(private readonly camera: CameraService) {}
+
+  @Get()
+  @Header('Cache-Control', 'no-store')
+  @Header('Pragma', 'no-cache')
+  @Header('Expires', '0')
+  findByEdge(@Query() query: GetCamerasDto) {
+    return this.camera.findByEdge(query);
+  }
+}

src/camera/camera.mapper.ts

@@ -0,0 +1,12 @@
+import { CameraResponseDto } from './dto/camera-response.dto';
+import { CameraRow } from './camera.types';
+
+export function createCameraResponse(edge: string, rows: CameraRow[]): CameraResponseDto {
+  return {
+    edge,
+    items: rows.map((row) => ({
+      protocol: row.protocol,
+      source: row.source,
+    })),
+  };
+}

src/camera/camera.module.ts

@@ -0,0 +1,10 @@
+import { Module } from '@nestjs/common';
+import { CameraController } from './camera.controller';
+import { CameraRepository } from './camera.repository';
+import { CameraService } from './camera.service';
+
+@Module({
+  controllers: [CameraController],
+  providers: [CameraService, CameraRepository],
+})
+export class CameraModule {}

src/camera/camera.repository.ts

@@ -0,0 +1,22 @@
+import { Injectable } from '@nestjs/common';
+import { DbService } from '../db/db.service';
+import { CameraRow } from './camera.types';
+
+@Injectable()
+export class CameraRepository {
+  constructor(private readonly db: DbService) {}
+
+  async findByEdge(edge: string): Promise<CameraRow[]> {
+    const result = await this.db.query<CameraRow>(
+      `
+        SELECT protocol, source
+        FROM camera
+        WHERE edge = $1
+        ORDER BY source ASC
+      `,
+      [edge],
+    );
+
+    return result.rows;
+  }
+}

src/camera/camera.service.ts

@@ -0,0 +1,15 @@
+import { Injectable } from '@nestjs/common';
+import { CameraResponseDto } from './dto/camera-response.dto';
+import { GetCamerasDto } from './dto/get-cameras.dto';
+import { createCameraResponse } from './camera.mapper';
+import { CameraRepository } from './camera.repository';
+
+@Injectable()
+export class CameraService {
+  constructor(private readonly repository: CameraRepository) {}
+
+  async findByEdge(query: GetCamerasDto): Promise<CameraResponseDto> {
+    const rows = await this.repository.findByEdge(query.edge);
+    return createCameraResponse(query.edge, rows);
+  }
+}

src/camera/camera.types.ts

@@ -0,0 +1,4 @@
+export type CameraRow = {
+  protocol: string;
+  source: string;
+};

src/camera/dto/camera-response.dto.ts

@@ -0,0 +1,9 @@
+export type CameraItemDto = {
+  protocol: string;
+  source: string;
+};
+
+export type CameraResponseDto = {
+  edge: string;
+  items: CameraItemDto[];
+};

src/camera/dto/get-cameras.dto.ts

@@ -0,0 +1,7 @@
+import { IsNotEmpty, IsString } from 'class-validator';
+
+export class GetCamerasDto {
+  @IsNotEmpty()
+  @IsString()
+  edge!: string;
+}