Add hotel layer, conversion scripts

scripts/onwheels/convertData.ts

@@ -0,0 +1,177 @@
+import { parse } from "csv-parse/sync";
+import { readFileSync, writeFileSync } from "fs";
+import { Feature, FeatureCollection, GeoJsonProperties } from "geojson";
+import Constants from "./constants";
+
+/**
+ * Function to determine the tags for a category
+ *
+ * @param category The category of the item
+ * @returns List of tags for the category
+ */
+function categoryTags(category: string): GeoJsonProperties {
+  const tags = Constants.categories[category];
+  if (!tags) {
+    throw `Unknown category: ${category}`;
+  }
+  return tags;
+}
+
+/**
+ * Rename tags to match the OSM standard
+ *
+ * @param item The item to convert
+ * @returns GeoJsonProperties for the item
+ */
+function renameTags(item): GeoJsonProperties {
+  const properties: GeoJsonProperties = {};
+  for (const key in item) {
+    if (Constants.names[key] && item[key]) {
+      properties[Constants.names[key]] = item[key];
+    }
+  }
+  return properties;
+}
+
+function convertTypes(properties: GeoJsonProperties): GeoJsonProperties {
+  for (const property in properties) {
+    // Determine the original tag by looking at the value in the names table
+    const originalTag = Object.keys(Constants.names).find(
+      (tag) => Constants.names[tag] === property
+    );
+    // Check if we need to convert the value
+    if (Constants.types[originalTag]) {
+      switch (Constants.types[originalTag]) {
+        case "boolean":
+          properties[property] = properties[property] === "1" ? "yes" : "no";
+          break;
+        default:
+          break;
+      }
+    }
+  }
+  return properties;
+}
+
+/**
+ * Function to add units to the properties if necessary
+ *
+ * @param properties The properties to add units to
+ * @returns The properties with units added
+ */
+function addUnits(properties: GeoJsonProperties): GeoJsonProperties {
+  for (const property in properties) {
+    // Check if the property needs units, and doesn't already have them
+    if (Constants.units[property] && property.match(/.*([A-z]).*/gi) === null) {
+      properties[
+        property
+      ] = `${properties[property]} ${Constants.units[property]}`;
+    }
+  }
+  return properties;
+}
+
+/**
+ * Main function to convert original CSV into GeoJSON
+ *
+ * @param args List of arguments [input.csv]
+ */
+function main(args: string[]): void {
+  const csvOptions = {
+    columns: true,
+    skip_empty_lines: true,
+    trim: true,
+  };
+  const file = args[0];
+  const output = args[1];
+
+  // Create an empty list to store the converted features
+  var items: Feature[] = [];
+
+  // Read CSV file
+  const csv: Record<any, string>[] = parse(readFileSync(file), csvOptions);
+
+  // Loop through all the entries
+  for (var i = 0; i < csv.length; i++) {
+    const item = csv[i];
+
+    // Determine coordinates
+    const lat = Number(item["Latitude"]);
+    const lon = Number(item["Longitude"]);
+
+    // Check if coordinates are valid
+    if (isNaN(lat) || isNaN(lon)) {
+      throw `Not a valid lat or lon for entry ${i}: ${JSON.stringify(item)}`;
+    }
+
+    // Create a new collection to store the converted properties
+    var properties: GeoJsonProperties = {};
+
+    // Add standard tags for category
+    const category = item["Categorie"];
+    properties = { ...properties, ...categoryTags(category) };
+
+    // Add the rest of the needed tags
+    properties = { ...properties, ...renameTags(item) };
+
+    // Convert types
+    properties = convertTypes(properties);
+
+    // Loop through all the properties
+    // for (var key in item) {
+    //   // Check if we need the property, and it's not empty
+    //   if (Constants.names[key] && item[key]) {
+    //     // Check if the type needs to be converted
+    //     if (Constants.types[key]) {
+    //       // Conversion necessary, use the typeTable
+    //       switch (Constants.types[key]) {
+    //         case "boolean":
+    //           properties[Constants.names[key]] =
+    //             item[key] === "1" ? "yes" : "no";
+    //           break;
+    //         default:
+    //           properties[Constants.names[key]] = item[key];
+    //           break;
+    //       }
+    //     } else {
+    //       // No conversion necessary, we can just add the property
+    //       properties[Constants.names[key]] = item[key];
+    //     }
+    //   }
+    // }
+
+    // Add units if necessary
+    addUnits(properties);
+
+    // Create the new feature
+    const feature: Feature = {
+      type: "Feature",
+      id: item["ID"],
+      geometry: {
+        type: "Point",
+        coordinates: [lon, lat],
+      },
+      properties,
+    };
+
+    // Push it to the list we created earlier
+    items.push(feature);
+  }
+
+  // Make a FeatureCollection out of it
+  const featureCollection: FeatureCollection = {
+    type: "FeatureCollection",
+    features: items,
+  };
+
+  // Output the data to the console
+  console.log(JSON.stringify(featureCollection));
+
+  // Write the data to a file
+  if (output) {
+    writeFileSync(`${output}.geojson`, JSON.stringify(featureCollection, null, 2));
+  }
+}
+
+// Execute the main function, with the stripped arguments
+main(process.argv.slice(2));