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Save and load report PDF data to json

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This commit is contained in:
Michael Babienco
2026-02-16 18:39:19 +09:00
parent 833e97fbea
commit b4d09c0d8b
5 changed files with 131 additions and 30 deletions
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ViewModels/MainViewModel.cs
+84 -12
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@@ -5,6 +5,7 @@ using System.Collections.ObjectModel;
using System.Globalization;
using System.IO;
using System.Linq;
using System.Text.Json;
using System.Threading.Tasks;
using Avalonia.Platform.Storage;
using Avalonia.Themes.Fluent;
@@ -15,32 +16,36 @@ using MigraDoc.Rendering;
using PdfSharp.Fonts;
using PdfSharp.Pdf.IO;
using PdfSharp.Snippets.Font;
using ReceiptPDFBuilder.Helpers;
using ReceiptPDFBuilder.Interfaces;
using ReceiptPDFBuilder.Models;
using ReceiptPDFBuilders.Helpers;
namespace ReceiptPDFBuilder.ViewModels;
class MainViewModel : BaseViewModel, IFontResolver
{
private string _baseDir;
private string _processDir;
private bool _isCreatingPDF;
private string _createPDFLog;
private string _workingFolder;
private string _reportTitle;
private ObservableCollection<ReportFile> _reportFiles;
private DateTime? _lastGeneratedTime;
private Settings _settings;
public MainViewModel(IChangeViewModel viewModelChanger) : base(viewModelChanger)
{
_baseDir = Path.GetDirectoryName(Environment.ProcessPath) ?? "";
_processDir = Path.GetDirectoryName(Environment.ProcessPath) ?? "";
_isCreatingPDF = false;
_createPDFLog = "Ready to create PDF! Choose a folder to begin...";
_workingFolder = "";
_reportFiles = new ObservableCollection<ReportFile>();
_reportFiles.CollectionChanged += ( sender, e ) => { NotifyPropertyChanged(nameof(IsCreatePDFButtonEnabled)); };
_reportTitle = "";
_lastGeneratedTime = null;
_settings = Settings.LoadSettings();
if (!string.IsNullOrWhiteSpace(_settings.LastUsedPath))
{
@@ -118,12 +123,33 @@ class MainViewModel : BaseViewModel, IFontResolver
_workingFolder = path;
NotifyPropertyChanged(nameof(IsTitleBoxVisible));
// TODO: Scan folder for saved info from previous reports and reload that first
// Scan folder for files and display in DataGrid
var filePaths = Directory.GetFiles(_workingFolder);
filePaths.Sort();
foreach (var filePath in filePaths)
var reportFilePath = Path.Combine(path, GetReportSavedDataFileName());
var successfullyLoadedPriorReport = false;
if (File.Exists(reportFilePath))
{
AddFileBasedOnPath(filePath);
// load prior report
var json = File.ReadAllText(reportFilePath);
var jsonContext = new SourceGenerationContext(Utilities.GetSerializerOptions());
var report = JsonSerializer.Deserialize<PDFReport>(json, jsonContext.PDFReport);
if (report != null && report.Files.Count > 0)
{
ReportFiles = new ObservableCollection<ReportFile>(report.Files);
ReportTitle = report.Title;
_workingFolder = report.BaseFolder;
_lastGeneratedTime = report.LastGenerated ?? null;
LogInfo("Reloaded report last saved at {0}", report.LastSaved);
successfullyLoadedPriorReport = true;
}
}
if (!successfullyLoadedPriorReport)
{
// Scan folder for files and display in DataGrid
var filePaths = Directory.GetFiles(_workingFolder);
filePaths.Sort();
foreach (var filePath in filePaths)
{
AddFileBasedOnPath(filePath);
}
}
}
}
@@ -235,26 +261,71 @@ class MainViewModel : BaseViewModel, IFontResolver
}
}
public async void SaveInterimReportInfo()
{
var report = new PDFReport()
{
Title = ReportTitle,
Files = ReportFiles.ToList(),
BaseFolder = _workingFolder,
LastSaved = DateTime.Now,
LastGenerated = _lastGeneratedTime,
};
await SavePDFReportDataToDisk(report);
}
private async Task SavePDFReportDataToDisk(PDFReport report)
{
var jsonContext = new SourceGenerationContext(Utilities.GetSerializerOptions());
using var memoryStream = new MemoryStream();
await JsonSerializer.SerializeAsync(memoryStream, report, jsonContext.PDFReport);
memoryStream.Position = 0;
using var reader = new StreamReader(memoryStream);
var json = await reader.ReadToEndAsync();
var savePath = Path.Combine(_workingFolder, GetReportSavedDataFileName());
await File.WriteAllTextAsync(savePath, json);
LogInfo("Saved report information to {0} (baseDir is {1})", savePath, _workingFolder);
}
private async Task CreateAndSaveReportObjectAfterReportCreation()
{
var report = new PDFReport()
{
Title = ReportTitle,
Files = ReportFiles.ToList(),
BaseFolder = _workingFolder,
LastSaved = DateTime.Now,
LastGenerated = DateTime.Now,
};
_lastGeneratedTime = DateTime.Now;
await SavePDFReportDataToDisk(report);
}
private string GetReportSavedDataFileName()
{
return "report_data.json";
}
public byte[]? GetFont(string faceName)
{
LogInfo(string.Format("Loading font {0}", faceName));
if (faceName == "Noto Sans JP")
{
var path = Path.Combine(_baseDir, "Assets/Fonts/Noto_Sans_JP/static/NotoSansJP-Regular.ttf");
var path = Path.Combine(_processDir, "Assets/Fonts/Noto_Sans_JP/static/NotoSansJP-Regular.ttf");
if (!File.Exists(path))
{
path = Path.Combine(_baseDir, "../Resources/Assets/Fonts/Noto_Sans_JP/static/NotoSansJP-Regular.ttf");
path = Path.Combine(_processDir, "../Resources/Assets/Fonts/Noto_Sans_JP/static/NotoSansJP-Regular.ttf");
}
return File.ReadAllBytes(path);
}
if (faceName == "Noto Sans JP Bold")
{
var path = Path.Combine(_baseDir, "Assets/Fonts/Noto_Sans_JP/static/NotoSansJP-SemiBold.ttf");
var path = Path.Combine(_processDir, "Assets/Fonts/Noto_Sans_JP/static/NotoSansJP-SemiBold.ttf");
if (!File.Exists(path))
{
path = Path.Combine(_baseDir, "../Resources/Assets/Fonts/Noto_Sans_JP/static/NotoSansJP-SemiBold.ttf");
path = Path.Combine(_processDir, "../Resources/Assets/Fonts/Noto_Sans_JP/static/NotoSansJP-SemiBold.ttf");
}
return File.ReadAllBytes(Path.Combine(_baseDir, "Assets/Fonts/Noto_Sans_JP/static/NotoSansJP-SemiBold.ttf"));
return File.ReadAllBytes(Path.Combine(_processDir, "Assets/Fonts/Noto_Sans_JP/static/NotoSansJP-SemiBold.ttf"));
}
return null;
}
@@ -399,6 +470,7 @@ class MainViewModel : BaseViewModel, IFontResolver
LogInfo("Saving document to disk...");
pdfRenderer.PdfDocument.Save(filename);
LogInfo("Saved PDF output to: " + filename);
await CreateAndSaveReportObjectAfterReportCreation();
IsCreatingPDF = false;
return;
}