Clean master commit

src/middleware/index.js

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+import {Router, next} from "express";
+import {mapboxAccessToken} from "../config";
+import morgan from "morgan";
+import mapbox from "./mapbox";
+
+export default ({config, db}) => {
+  let routes = Router();
+
+  /* logging middleware */
+  routes.use(morgan("dev"));
+
+  if (mapboxAccessToken) {
+    routes.get("/mapbox/:z/:y/:x", mapbox(mapboxAccessToken));
+  }
+
+  return routes;
+};

src/middleware/mapbox/index.js

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+import fetch from "node-fetch";
+import fs from "fs";
+// TODO: load images from mapbox API and store.
+
+const baseUrl = "http://a.tiles.mapbox.com/v4/mapbox.satellite";
+export default accessToken => (req, res) => {
+  const {x, y, z} = req.params;
+  // const filename = `${z}-${y}-${x}.png`
+  // const fileStream = fs.createWriteStream(`${z}-${y}-${x}.png`)
+  fetch(
+    `http://a.tiles.mapbox.com/v4/mapbox.satellite/${z}/${y}/${x}@2x.png?access_token=${accessToken}`
+  ).then(result => {
+    res.set("Content-Type", "image/png");
+    result.body.pipe(res);
+  });
+};