Nasa API with Express and Axios

README.md

@@ -1,2 +1,5 @@
 Run project with
 `npm run start`
+
+Sign up to the NASA Open API to get your personal key.
+Create a `.env` local file and store your new key there to use this app.

app/index.ts

@@ -0,0 +1,15 @@
+import express from "express";
+import roverRouter from "../routes/roverRouter";
+
+const app = express();
+
+app.get("/", (req: any, res: any) => {
+  res.send(`Hello space traveller!
+    What are you exploring today?
+    A) /rovers = all rovers' info
+    B) /rovers/[your preferred rover's name]/photos = photos from that rover`)
+});
+
+app.use("/rovers", roverRouter);
+
+export default app;

package.json

@@ -2,6 +2,7 @@
   "dependencies": {
     "@types/express": "^5.0.0",
     "axios": "^1.7.7",
+    "dotenv": "^16.4.5",
     "express": "^4.21.1",
     "nodemon": "^3.1.7",
     "ts-node": "^10.9.2"
@@ -11,5 +12,12 @@
   },
   "devDependencies": {
     "tsx": "^4.19.2"
-  }
+  },
+  "name": "marsappapi",
+  "version": "1.0.0",
+  "description": "Run project with `npm run start`",
+  "main": "index.js",
+  "keywords": [],
+  "author": "",
+  "license": "ISC"
 }

routes/roverRouter.ts

@@ -0,0 +1,101 @@
+import express from "express";
+import axios from "axios";
+const roverRouter = express.Router();
+
+import dotenv from "dotenv";
+dotenv.config({ path: './.env' });
+const apiKey = process.env.NASA_API_KEY;
+
+enum Cameras {
+  FHAZ = "FHAZ",
+  RHAZ = "RHAZ",
+  MAST = "MAST",
+  CHEMCAM = "CHEMCAM",
+  MAHLI = "MAHLI",
+  MARDI = "MARDI",
+  NAVCAM = "NAVCAM",
+  PANCAM = "PANCAM",
+  MINITES = "MINITES"
+}
+
+enum Rovers {
+  CURIOSITY = "Curiosity",
+  SPIRIT = "Spirit",
+  OPPORTUNITY = "Opportunity",
+  PERSEVERANCE = "Perseverance"
+}
+
+interface Camera {
+  id?: number;
+  name: string;
+  rover_id?: number;
+  full_name: string;
+}
+
+interface Rover {
+  id: number;
+  name: string;
+  landing_date: string;
+  launch_date: string;
+  status: string;
+  max_sol: number;
+  max_date: string;
+  total_photos: number;
+  cameras: Camera[];
+}
+
+interface Photo {
+  id: number;
+  sol: number;
+  camera: Camera;
+  img_src: string;
+  earth_date: string;
+  rover: Rover;
+}
+
+roverRouter.get('/', (req: any, res: any) => {
+  axios.get(`https://api.nasa.gov/mars-photos/api/v1/rovers`, {
+    params: {
+      api_key: apiKey
+    }
+  })
+    .then(response => {
+      res.send(response.data);
+    })
+    .catch(error => {
+      console.error(error);
+      res.render("error");
+    })
+});
+
+roverRouter.get('/:roverName/photos', (req: any, res: any) => {
+
+  const { roverName } = req.params;
+
+  const { camera, sol, page, paginationStart, paginationEnd } = req.query;
+
+  axios.get(`https://api.nasa.gov/mars-photos/api/v1/rovers/${roverName}/photos`, {
+    params: {
+      api_key: apiKey,
+      camera: camera,
+      page: page || 1,
+      sol: sol || 1000
+    }
+  })
+    .then(response => {
+      const photos: Photo[] = response.data.photos;
+      const urls: string[] = [];
+
+      photos.forEach(photo => {
+        urls.push(photo.img_src);
+      });
+
+      res.send(urls.slice(paginationStart - 1, paginationEnd));
+    })
+    .catch(error => {
+      console.error(error);
+      res.render("error");
+    })
+});
+
+export default roverRouter;

src/server.ts

@@ -1,14 +1,7 @@
-import express from "express";
+import app from "../app";
 
-const app = express();
-const port = 5000;
-
-app.use(express.json());
-const router = express.Router();
-
-router.get('/', (req: any, res: any) => res.send('Hello world !'));
-app.use('/', router);
+const port = 3000;
 
 app.listen(port, () => {
   console.log(`Test backend is running on port ${port}`);
-});
+});