feat: service implementation

.env

@@ -0,0 +1,10 @@
+PORT=3000
+
+DB_HOST=localhost
+DB_PORT=5432
+DB_DATABASE=oracle-backend
+DB_USERNAME=oracle-backend
+DB_PASSWORD=oracle-backend
+
+EVERCLOUD_URL=https://mainnet.evercloud.dev/9de6d46bd6454e6cac0b43aa7c7eaed6/graphql
+TWAP_INTERVALS=300,600,900,1800

.eslintrc.js

@@ -0,0 +1,25 @@
+module.exports = {
+  parser: '@typescript-eslint/parser',
+  parserOptions: {
+    project: 'tsconfig.json',
+    tsconfigRootDir : __dirname,
+    sourceType: 'module',
+  },
+  plugins: ['@typescript-eslint/eslint-plugin'],
+  extends: [
+    'plugin:@typescript-eslint/recommended',
+    'plugin:prettier/recommended',
+  ],
+  root: true,
+  env: {
+    node: true,
+    jest: true,
+  },
+  ignorePatterns: ['.eslintrc.js'],
+  rules: {
+    '@typescript-eslint/interface-name-prefix': 'off',
+    '@typescript-eslint/explicit-function-return-type': 'off',
+    '@typescript-eslint/explicit-module-boundary-types': 'off',
+    '@typescript-eslint/no-explicit-any': 'off',
+  },
+};

.gitignore

@@ -0,0 +1,35 @@
+# compiled output
+/dist
+/node_modules
+
+# Logs
+logs
+*.log
+npm-debug.log*
+pnpm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+lerna-debug.log*
+
+# OS
+.DS_Store
+
+# Tests
+/coverage
+/.nyc_output
+
+# IDEs and editors
+/.idea
+.project
+.classpath
+.c9/
+*.launch
+.settings/
+*.sublime-workspace
+
+# IDE - VSCode
+.vscode/*
+!.vscode/settings.json
+!.vscode/tasks.json
+!.vscode/launch.json
+!.vscode/extensions.json

.husky/commit-msg

@@ -0,0 +1,4 @@
+#!/bin/sh
+. "$(dirname "$0")/_/husky.sh"
+
+commitlint --edit "$1"

.husky/pre-commit

@@ -0,0 +1,4 @@
+#!/bin/sh
+. "$(dirname "$0")/_/husky.sh"
+
+yarn lint

.prettierrc

@@ -0,0 +1,4 @@
+{
+  "singleQuote": true,
+  "trailingComma": "all"
+}

Dockerfile

@@ -0,0 +1,31 @@
+FROM node:16.17.0-alpine
+
+RUN apk add --no-cache make python3 git
+
+WORKDIR /app
+
+# Sources
+COPY src /app/src
+
+# Install
+COPY package.json /app/package.json
+COPY yarn.lock /app/yarn.lock
+
+# Config
+COPY ormconfig.js /app/ormconfig.js
+COPY tsconfig.json /app/tsconfig.json
+COPY tsconfig.build.json /app/tsconfig.build.json
+
+# Build
+RUN yarn
+RUN yarn build
+
+# Clean
+RUN rm -rf /app/yarn.lock
+RUN rm -rf /app/tsconfig.json
+RUN rm -rf /app/tsconfig.build.json
+RUN rm -rf /app/src
+
+EXPOSE 3000
+
+CMD yarn start:prod

README.md

@@ -1,2 +1 @@
 # oracle-backend
-Backend for FlatQube oracle-pairs indexing

nest-cli.json

@@ -0,0 +1,5 @@
+{
+  "$schema": "https://json.schemastore.org/nest-cli",
+  "collection": "@nestjs/schematics",
+  "sourceRoot": "src"
+}

ormconfig.js

@@ -0,0 +1,11 @@
+module.exports = {
+  type: 'postgres',
+  host: process.env.DB_HOST,
+  port: process.env.DB_PORT,
+  username: process.env.DB_USERNAME,
+  password: process.env.DB_PASSWORD,
+  database: process.env.DB_DATABASE,
+  entities: ['dist/**/*.entity{.ts,.js}'],
+  migrations: ['dist/**/*.migration{.ts,.js}'],
+  migrationsRun: true,
+};

package.json

@@ -0,0 +1,81 @@
+{
+  "name": "oracle-backend",
+  "version": "0.0.1",
+  "description": "Backend for FlatQube oracle-pairs indexing",
+  "author": "Alexander Kunekov<[email protected]>",
+  "private": true,
+  "license": "MIT",
+  "scripts": {
+    "prepare": "husky install",
+    "prebuild": "rimraf dist",
+    "build": "nest build",
+    "format": "prettier --write \"src/**/*.ts\" \"test/**/*.ts\"",
+    "start:dev": "nest start --watch",
+    "start:prod": "node dist/main",
+    "lint": "eslint \"{src,apps,libs,test}/**/*.ts\" --fix"
+  },
+  "dependencies": {
+    "@nestjs/common": "9.0.0",
+    "@nestjs/config": "2.2.0",
+    "@nestjs/core": "9.0.0",
+    "@nestjs/event-emitter": "1.3.1",
+    "@nestjs/platform-express": "9.0.0",
+    "@nestjs/typeorm": "8.0.3",
+    "bignumber.js": "9.1.0",
+    "everscale-inpage-provider": "0.3.41",
+    "everscale-standalone-client": "2.1.1",
+    "pg": "8.8.0",
+    "reflect-metadata": "0.1.13",
+    "rimraf": "3.0.2",
+    "rxjs": "7.2.0",
+    "typeorm": "0.2.45"
+  },
+  "devDependencies": {
+    "@commitlint/cli": "17.0.2",
+    "@commitlint/config-conventional": "16.2.1",
+    "@nestjs/cli": "9.0.0",
+    "@nestjs/schematics": "9.0.0",
+    "@nestjs/testing": "9.0.0",
+    "@types/express": "4.17.13",
+    "@types/jest": "28.1.4",
+    "@types/node": "16.0.0",
+    "@types/supertest": "2.0.11",
+    "@typescript-eslint/eslint-plugin": "5.0.0",
+    "@typescript-eslint/parser": "5.0.0",
+    "eslint": "8.0.1",
+    "eslint-config-prettier": "8.3.0",
+    "eslint-plugin-prettier": "4.0.0",
+    "husky": "8.0.1",
+    "jest": "28.1.2",
+    "prettier": "2.3.2",
+    "source-map-support": "0.5.20",
+    "supertest": "6.1.3",
+    "ts-jest": "28.0.5",
+    "ts-loader": "9.2.3",
+    "ts-node": "10.0.0",
+    "tsconfig-paths": "4.0.0",
+    "typescript": "4.3.5"
+  },
+  "jest": {
+    "moduleFileExtensions": [
+      "js",
+      "json",
+      "ts"
+    ],
+    "rootDir": "src",
+    "testRegex": ".*\\.spec\\.ts$",
+    "transform": {
+      "^.+\\.(t|j)s$": "ts-jest"
+    },
+    "collectCoverageFrom": [
+      "**/*.(t|j)s"
+    ],
+    "coverageDirectory": "../coverage",
+    "testEnvironment": "node"
+  },
+  "commitlint": {
+    "extends": [
+      "@commitlint/config-conventional"
+    ]
+  }
+}

src/app.module.ts

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+import { Module } from '@nestjs/common';
+import { ServiceModule } from './service/service.module';
+import { ClientsModule } from './clients/clients.module';
+import { ConfigModule } from '@nestjs/config';
+import { EventEmitterModule } from '@nestjs/event-emitter';
+import { TypeOrmModule } from '@nestjs/typeorm';
+
+@Module({
+  imports: [
+    TypeOrmModule.forRoot(),
+    ConfigModule.forRoot({ isGlobal: true }),
+    EventEmitterModule.forRoot({ wildcard: true }),
+    ClientsModule,
+    ServiceModule,
+  ],
+})
+export class AppModule {}

src/clients/clients.module.ts

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+import { Module, Global } from '@nestjs/common';
+import { EverscaleService } from './everscale.service';
+
+@Global()
+@Module({
+  providers: [EverscaleService],
+  exports: [EverscaleService],
+})
+export class ClientsModule {}