Added report functionality and Dropbox connection

2026-08-13 17:43:42 -05:00 · 2026-08-13 17:43:42 -05:00 · c7494eda92
commit c7494eda92
parent 483fbeafb6
8 changed files with 614 additions and 2 deletions
--- a/lib/services/fuel_report_pdf.dart
+++ b/lib/services/fuel_report_pdf.dart
@ -0,0 +1,85 @@
+import 'dart:typed_data';
+
+import 'package:intl/intl.dart';
+import 'package:pdf/pdf.dart';
+import 'package:pdf/widgets.dart' as pw;
+
+import 'fuel_report.dart';
+
+final _dateFormat = DateFormat.yMMMd();
+final _currencyFormat = NumberFormat.simpleCurrency();
+
+/// Renders [report] as a single-page-friendly PDF: a per-vehicle table
+/// (VIN, nickname, entry count, gallons, total cost) plus a grand-total
+/// row, suitable for attaching to a fuel tax refund submission or handing
+/// to a printer.
+Future<Uint8List> buildFuelReportPdf(FuelReport report) async {
+  final doc = pw.Document();
+
+  doc.addPage(
+    pw.MultiPage(
+      pageFormat: PdfPageFormat.letter,
+      header: (context) => pw.Column(
+        crossAxisAlignment: pw.CrossAxisAlignment.start,
+        children: [
+          pw.Text('Fuel Report', style: pw.TextStyle(fontSize: 20, fontWeight: pw.FontWeight.bold)),
+          pw.Text(
+            '${_dateFormat.format(report.startDate)} – ${_dateFormat.format(report.endDate)}',
+            style: const pw.TextStyle(fontSize: 12, color: PdfColors.grey700),
+          ),
+          pw.SizedBox(height: 16),
+        ],
+      ),
+      build: (context) => [
+        if (report.rows.isEmpty)
+          pw.Text('No vehicles had a receipted fuel entry in this date range.')
+        else
+          pw.TableHelper.fromTextArray(
+            headers: ['Vehicle', 'VIN', 'Entries', 'Gallons', 'Total Cost'],
+            data: [
+              for (final row in report.rows)
+                [
+                  row.vehicle.nickname?.trim().isNotEmpty == true ? row.vehicle.nickname! : '—',
+                  row.vehicle.vin,
+                  row.entryCount.toString(),
+                  row.totalGallons.toStringAsFixed(3),
+                  _currencyFormat.format(row.totalCost),
+                ],
+            ],
+            cellAlignments: const {
+              2: pw.Alignment.centerRight,
+              3: pw.Alignment.centerRight,
+              4: pw.Alignment.centerRight,
+            },
+            headerAlignments: const {
+              2: pw.Alignment.centerRight,
+              3: pw.Alignment.centerRight,
+              4: pw.Alignment.centerRight,
+            },
+            headerStyle: pw.TextStyle(fontWeight: pw.FontWeight.bold),
+            cellPadding: const pw.EdgeInsets.symmetric(horizontal: 8, vertical: 6),
+          ),
+        pw.SizedBox(height: 12),
+        pw.Divider(),
+        pw.Row(
+          mainAxisAlignment: pw.MainAxisAlignment.spaceBetween,
+          children: [
+            pw.Text('Total', style: pw.TextStyle(fontWeight: pw.FontWeight.bold)),
+            pw.Text(
+              '${report.totalGallons.toStringAsFixed(3)} gal · ${_currencyFormat.format(report.totalCost)}',
+              style: pw.TextStyle(fontWeight: pw.FontWeight.bold),
+            ),
+          ],
+        ),
+      ],
+    ),
+  );
+
+  return doc.save();
+}
+
+/// `fuel-report-<start>-<end>.pdf`, e.g. `fuel-report-20260101-20260331.pdf`.
+String fuelReportFileName(FuelReport report) {
+  final fmt = DateFormat('yyyyMMdd');
+  return 'fuel-report-${fmt.format(report.startDate)}-${fmt.format(report.endDate)}.pdf';
+}