🚀 💸

.gitignore

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+# OS X
+.DS_Store*
+Icon?
+._*
+
+# Windows
+Thumbs.db
+ehthumbs.db
+Desktop.ini
+
+# Linux
+.directory
+*~
+
+
+# npm
+node_modules
+package-lock.json
+*.log
+*.gz
+
+
+# Coveralls
+coverage
+
+# Benchmarking
+benchmarks/graphs
+
+# editor
+.vscode
+
+dist/

package.json

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+{
+  "name": "eldolar",
+  "version": "1.0.0",
+  "description": "bank exchange by eldolar",
+  "main": "app.js",
+  "license": "MIT",
+  "dependencies": {
+    "@types/express": "^4.16.0",
+    "concurrently": "^4.0.1",
+    "express": "^4.16.3",
+    "mongoose": "^5.2.17",
+    "nodemon": "^1.18.4"
+  },
+  "scripts": {
+    "watch-ts": "tsc -w",
+    "watch-node": "nodemon dist/app.js",
+    "watch": "concurrently -k -p \"[{name}]\" -n \"TypeScript, Node\" -c \"yello.bold, cyan.bold\" \"yarn run watch-ts\" \"yarn run watch-node\""
+  },
+  "devDependencies": {
+    "@types/mongoose": "^5.2.17"
+  }
+}

src/app.ts

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+import * as express from "express";
+import * as bodyParse from "body-parser";
+import * as mongoose from 'mongoose';
+import ExchangeRouter from './routers/exchangeRouter'
+
+const app = express();
+
+// set up mongoose
+const URI: string = "mongodb://127.0.0.1:27017/eldolar";
+ mongoose.connect(process.env.MONGODB_URI || URI, (err: any) => {
+  if (err) {
+    console.log(err.message)
+  } else {
+    console.log("Successfully Connected")
+  }
+})
+
+ // config
+app.use(bodyParse.json());
+app.set("port", 3000);
+
+// routers
+app.use('/api/v1/exchanges', ExchangeRouter)
+
+// start
+app.listen(app.get("port"), () => {
+  console.log("App is running on localhost:%d", app.get("port"));
+})

src/models/exchange.ts

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+import { Schema, model } from 'mongoose';
+import { Decimal128 } from 'bson';
+
+export const ExchangeSchema = new Schema({
+  createdAt: { type: Date, required: true },
+  banks: [
+    {
+      name: String,
+      buy:  { type: Decimal128, default: 0 },
+      sell: { type: Decimal128, default: 0 }
+    }
+  ]
+});
+
+const Exchange = model("Exchange", ExchangeSchema);
+export default Exchange;

src/routers/ExchangeRouter.ts

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+import { Router, Request, Response } from 'express';
+import Exchange from '../models/exchange';
+
+const router: Router = Router();
+
+// - GET /exchanges # returns all exchanges
+function allExchanges(req: Request, res: Response) : void {
+  Exchange.find({})
+    .then(exchanges => {
+      res.send(exchanges)
+    })
+    .catch(err => {
+      res.send(err)
+    }) 
+}
+
+// - POST /exchanges # insert new one
+function addExchange(req: Request, res: Response) : void {
+  let exchange = new Exchange(req.body);
+
+  exchange.save()
+    .then(data => {
+      res.send(data)
+    })
+    .catch(err => {
+      res.send(err)
+    })
+}
+
+router.get('/', allExchanges);
+router.post('/', addExchange);
+
+export default router;

tsconfig.json

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+{
+  "compilerOptions": {
+    "module": "commonjs",
+    "noImplicitAny": true,
+    "removeComments": true,
+    "target": "es6",
+    "preserveConstEnums": true,
+    "moduleResolution": "node",
+    "outDir": "dist",
+    "sourceMap": true
+  },
+  "include": [
+    "src/**/*"
+  ],
+  "exclude": [
+    "node_modules",
+    "**/*.spec.ts"
+  ]
+}