79 lines
2.9 KiB
C#
79 lines
2.9 KiB
C#
using System;
|
|
using System.Collections.Generic;
|
|
using System.IO;
|
|
using System.Linq;
|
|
using System.Net.Http;
|
|
using System.Threading.Tasks;
|
|
using DataLayer;
|
|
using Dinah.Core.ErrorHandling;
|
|
using Dinah.Core.Net.Http;
|
|
using FileManager;
|
|
|
|
namespace FileLiberator
|
|
{
|
|
public class DownloadPdf : DownloadableBase
|
|
{
|
|
public override bool Validate(LibraryBook libraryBook)
|
|
=> !string.IsNullOrWhiteSpace(getdownloadUrl(libraryBook))
|
|
&& !libraryBook.Book.PDF_Exists;
|
|
|
|
public DownloadPdf()
|
|
{
|
|
StreamingBegin += (o, e) => Serilog.Log.Logger.Information("Event fired {@DebugInfo}", new { Name = nameof(StreamingBegin), Message = e });
|
|
StreamingCompleted += (o, e) => Serilog.Log.Logger.Information("Event fired {@DebugInfo}", new { Name = nameof(StreamingCompleted), Message = e });
|
|
|
|
Begin += (o, e) => Serilog.Log.Logger.Information("Event fired {@DebugInfo}", new { Name = nameof(Begin), Book = e.LogFriendly() });
|
|
Completed += (o, e) => Serilog.Log.Logger.Information("Event fired {@DebugInfo}", new { Name = nameof(Completed), Book = e.LogFriendly() });
|
|
}
|
|
|
|
public override async Task<StatusHandler> ProcessItemAsync(LibraryBook libraryBook)
|
|
{
|
|
var proposedDownloadFilePath = getProposedDownloadFilePath(libraryBook);
|
|
var actualDownloadedFilePath = await downloadPdfAsync(libraryBook, proposedDownloadFilePath);
|
|
var result = verifyDownload(actualDownloadedFilePath);
|
|
|
|
libraryBook.Book.UserDefinedItem.PdfStatus = result.IsSuccess ? LiberatedStatus.Liberated : LiberatedStatus.NotLiberated;
|
|
|
|
return result;
|
|
}
|
|
|
|
private static string getProposedDownloadFilePath(LibraryBook libraryBook)
|
|
{
|
|
// if audio file exists, get it's dir. else return base Book dir
|
|
var existingPath = Path.GetDirectoryName(AudibleFileStorage.Audio.GetPath(libraryBook.Book.AudibleProductId));
|
|
var file = getdownloadUrl(libraryBook);
|
|
|
|
if (existingPath != null)
|
|
return Path.Combine(existingPath, Path.GetFileName(file));
|
|
|
|
var full = FileUtility.GetValidFilename(
|
|
AudibleFileStorage.PdfStorageDirectory,
|
|
libraryBook.Book.Title,
|
|
Path.GetExtension(file),
|
|
libraryBook.Book.AudibleProductId);
|
|
return full;
|
|
}
|
|
|
|
private static string getdownloadUrl(LibraryBook libraryBook)
|
|
=> libraryBook?.Book?.Supplements?.FirstOrDefault()?.Url;
|
|
|
|
private async Task<string> downloadPdfAsync(LibraryBook libraryBook, string proposedDownloadFilePath)
|
|
{
|
|
var api = await libraryBook.GetApiAsync();
|
|
var downloadUrl = await api.GetPdfDownloadLinkAsync(libraryBook.Book.AudibleProductId);
|
|
|
|
var client = new HttpClient();
|
|
var actualDownloadedFilePath = await PerformDownloadAsync(
|
|
proposedDownloadFilePath,
|
|
(p) => client.DownloadFileAsync(downloadUrl, proposedDownloadFilePath, p));
|
|
|
|
return actualDownloadedFilePath;
|
|
}
|
|
|
|
private static StatusHandler verifyDownload(string actualDownloadedFilePath)
|
|
=> !File.Exists(actualDownloadedFilePath)
|
|
? new StatusHandler { "Downloaded PDF cannot be found" }
|
|
: new StatusHandler();
|
|
}
|
|
}
|