Merge pull request #86 from 35C4n0r/feat-gdb-geojson

feat: add script to parse gdb to geoJSONs

server/package.json

@@ -18,6 +18,7 @@
     "@types/swagger-ui-express": "^4.1.4",
     "bun": "^1.0.7",
     "express": "^4.18.2",
+    "fgdb": "^1.0.0",
     "geojson-rbush": "^3.2.0",
     "maxmind": "^4.3.16",
     "maxmind-db-reader": "^0.2.1",

server/scripts/gdb_to_geojson.js

@@ -0,0 +1,49 @@
+import fgdb from 'fgdb';
+import * as fs from 'fs/promises';
+import * as path from "path";
+
+const inputDir = `${import.meta.dir}/../geojson-data/indian_villages_boundaries.zip`;
+const outputDir = `${import.meta.dir}/../geojson-data/indian_village_boundaries`;
+
+function isZipFile(filename) {
+  return filename.endsWith('.zip');
+}
+
+async function createIfAbsent(filePath) {
+  if (!await fs.exists(filePath)) {
+    await fs.mkdir(filePath, {recursive: true});
+  }
+}
+
+const convertGDBtoGeoJSON = async (gdbFileBuffer, outputFilePath) => {
+  try {
+    const geoJSON = await fgdb(gdbFileBuffer);
+    const contentToWrite = JSON.stringify(geoJSON);
+    await fs.writeFile(outputFilePath, contentToWrite, 'utf8');
+    console.log("Converted and saved:", outputFilePath);
+
+  } catch (error) {
+    console.error("Error converting GDB to GeoJSON:", error);
+  }
+};
+
+const processFiles = async () => {
+  await createIfAbsent(outputDir);
+  const items = await fs.readdir(inputDir, {withFileTypes: true, recursive: true});
+
+  for (const item of items) {
+    const itemPath = path.join(inputDir, item.name);
+
+    if (!isZipFile(item.name)) {
+      await createIfAbsent(path.join(outputDir, item.name));
+    } else if (isZipFile(item.name)) {
+      const fileBuffer = await fs.readFile(itemPath);
+      await convertGDBtoGeoJSON(fileBuffer, path.join(outputDir, item.name.replace(/\.zip$/i, '.geoJSON')));
+    }
+  }
+};
+
+
+processFiles().then(r => {
+  console.log("Converted all gdbs to geJSON");
+});