List, export, recommendations done

routes/recommends.ts

@@ -0,0 +1,89 @@
+import * as express from "express";
+const router = express.Router();
+
+router.use((req, res, next) => {
+  if (!req.cookies || !req.cookies.uid) {
+    res.status(404);
+    res.send();
+  } else {
+    next();
+  }
+});
+
+router.get("/", (req, res, next) => {
+  const user = (req.app as any).db.get("users").find({id: req.cookies.uid}).value();
+  const data = [{
+    backgroundColor: "rgba(200, 200, 200, 1)",
+    data: [],
+    label: "Noch nicht probiert",
+  }, {
+    backgroundColor: "#8b0000",
+    data: [],
+    label: "1",
+  }, {
+    backgroundColor: "#b24502",
+    data: [],
+    label: "2",
+  }, {
+    backgroundColor: "#d87501",
+    data: [],
+    label: "3",
+  }, {
+    backgroundColor: "#ffa500",
+    data: [],
+    label: "4",
+  }, {
+    backgroundColor: "#b59200",
+    data: [],
+    label: "5",
+  }, {
+    backgroundColor: "#6b7d00",
+    data: [],
+    label: "6",
+  }, {
+    backgroundColor: "#006400",
+    data: [],
+    label: "7",
+  }];
+  const recommends = [];
+  (req.app as any).cocktails.forEach((value) => {
+    let found = false;
+    const triedCocktails = [];
+    for (const cocktail of user.cocktails) {
+      if (cocktail.cocktail === value[3]) {
+        data[cocktail.level].data.push({x: value[0], y: value[1], r: 4, val: value});
+        found = true;
+        break;
+      } else {
+        triedCocktails.push(cocktail);
+      }
+    }
+    if (!found) {
+      let dist = 0;
+      let distsum = 0;
+      for (const tried of triedCocktails) {
+        const idx = (req.app as any).cocktailList.indexOf(tried.cocktail);
+        if (idx > -1) {
+          const c = (req.app as any).cocktails[idx];
+          const d = Math.abs(c[0] - value[0]) + Math.abs(c[1] - value[1]);
+          if (d > 0.001) {
+            dist += (tried.level) / d;
+            distsum += 1 / d;
+          } else {
+            dist = tried.level;
+            distsum = 1;
+            break;
+          }
+        }
+      }
+      recommends.push([dist / distsum, value]);
+      data[0].data.push({x: value[0], y: value[1], r: 3, val: value});
+    }
+  });
+  recommends.sort((a, b) => {
+    return a[0] < b[0] ? 1 : (a[0] === b[0] ? 0 : -1);
+  });
+  res.render("recommends", {data, title: "Ähnliche Cocktails", user, cocktails: (req.app as any).cocktails, cocktailList: (req.app as any).cocktailList, recommends});
+});
+
+export = router;