initial commit - get basic sailing info

flatten-data.ts

@@ -0,0 +1,82 @@
+import * as fs from 'fs';
+import * as json2csv from 'json2csv';
+
+interface FlattenData {
+    [key: string]: string | number | FlattenData;
+}
+
+function flattenJson(data: any, parentKey = '', separator = '.'): FlattenData {
+    const flattenedData: FlattenData = {};
+    for (const key in data) {
+        if (data.hasOwnProperty(key)) {
+            const newKey = parentKey ? `${parentKey}${separator}${key}` : key;
+            if (typeof data[key] === 'object' && !Array.isArray(data[key])) {
+                const nestedData = flattenJson(data[key], newKey, separator);
+                Object.assign(flattenedData, nestedData);
+            } else {
+                flattenedData[newKey] = data[key];
+            }
+        }
+    }
+    return flattenedData;
+}
+
+export function createCsvFromJson(jsonData: string, csvFilePath: string): void {
+    // Load JSON data
+    const data = JSON.parse(jsonData);
+
+    // Flatten JSON data
+    const flattenedData = flattenJson(data);
+
+    // Get headers from flattened data
+    const headers = Object.keys(flattenedData);
+
+    // Convert flattened data to array of objects for json2csv
+    const rows = [flattenedData];
+
+    // Create CSV file
+    const csv = json2csv.parse(rows, { fields: headers });
+    fs.writeFileSync(csvFilePath, csv);
+    console.log(`CSV file created at: ${csvFilePath}`);
+}
+
+export function createCsvFromJsonArray(jsonDataArray: any[], csvFilePath: string): void {
+    // Flatten JSON data in array
+    const flattenedDataArray = jsonDataArray.map((data) => flattenJson(data));
+
+    // Get headers from flattened data
+    const headers = Array.from(
+        new Set(flattenedDataArray.flatMap((data) => Object.keys(data)))
+    );
+
+    // Convert flattened data to array of objects for json2csv
+    const rows = flattenedDataArray.map((data) => headers.reduce((obj, key) => {
+        // @ts-ignore
+        obj[key] = data[key] || '';
+        return obj;
+    }, {}));
+
+    // Create CSV file
+    const csv = json2csv.parse(rows, { fields: headers });
+    fs.writeFileSync(csvFilePath, csv);
+    console.log(`CSV file created at: ${csvFilePath}`);
+}
+
+// Example usage
+// const jsonData = `{
+//   "name": "John",
+//   "age": 30,
+//   "address": {
+//     "street": "123 Main St",
+//     "city": "New York",
+//     "state": "NY",
+//     "zip": "10001"
+//   },
+//   "phone": {
+//     "home": "123-456-7890",
+//     "work": "987-654-3210"
+//   }
+// }`;
+
+// const csvFilePath = 'output.csv';
+// createCsvFromJson(jsonData, csvFilePath);