Initial check-in
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Robert McRackan
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282 changed files with 24387 additions and 0 deletions
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using System;
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using System.Threading.Tasks;
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using DomainServices;
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namespace LibationWinForm.BookLiberation
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{
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// matches a file processor with a form
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public static class ProcessorAutomationController
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{
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//
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// these utility methods ensure proper wiring
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// 1) we can't forget to do it
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// 2) we can't accidentally do it mult times becaues we lost track of complexity
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//
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public static BackupBook GetWiredUpBackupBook()
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{
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var backupBook = new BackupBook();
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backupBook.Download.Begin += (_, __) => wireUpDownloadable(backupBook.Download);
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backupBook.Decrypt.Begin += (_, __) => wireUpDecryptable(backupBook.Decrypt);
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return backupBook;
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}
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public static DecryptBook GetWiredUpDecryptBook()
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{
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var decryptBook = new DecryptBook();
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decryptBook.Begin += (_, __) => wireUpDecryptable(decryptBook);
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return decryptBook;
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}
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public static DownloadBook GetWiredUpDownloadBook()
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{
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var downloadBook = new DownloadBook();
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downloadBook.Begin += (_, __) => wireUpDownloadable(downloadBook);
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return downloadBook;
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}
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public static DownloadPdf GetWiredUpDownloadPdf()
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{
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var downloadPdf = new DownloadPdf();
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downloadPdf.Begin += (_, __) => wireUpDownloadable(downloadPdf);
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return downloadPdf;
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}
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public static ScrapeBookDetails GetWiredUpScrapeBookDetails()
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{
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var scrapeBookDetails = new ScrapeBookDetails();
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scrapeBookDetails.Begin += (_, __) => wireUpDownloadable(scrapeBookDetails);
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scrapeBookDetails.NoLongerAvailableAction = noLongerAvailableUI;
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return scrapeBookDetails;
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}
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static ScrapeBookDetails.NoLongerAvailableEnum noLongerAvailableUI(string title, string url)
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{
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var nla = new NoLongerAvailableForm(title, url);
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nla.ShowDialog();
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return nla.EnumResult;
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}
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// subscribed to Begin event because a new form should be created+processed+closed on each iteration
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private static void wireUpDownloadable(IDownloadable downloadable)
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{
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#region create form
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var downloadDialog = new DownloadForm();
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#endregion
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// extra complexity for wiring up download form:
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// case 1: download is needed
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// dialog created. subscribe to events
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// downloadable.DownloadBegin fires. shows dialog
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// downloadable.DownloadCompleted fires. closes dialog. which fires FormClosing, FormClosed, Disposed
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// Disposed unsubscribe from events
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// case 2: download is not needed
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// dialog created. subscribe to events
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// dialog is never shown nor closed
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// downloadable.Completed fires. disposes dialog and unsubscribes from events
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#region define how model actions will affect form behavior
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void downloadBegin(object _, string str)
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{
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downloadDialog.UpdateFilename(str);
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downloadDialog.Show();
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}
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// close form on DOWNLOAD completed, not final Completed. Else for BackupBook this form won't close until DECRYPT is also complete
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void fileDownloadCompleted(object _, string __) => downloadDialog.Close();
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void downloadProgressChanged(object _, System.Net.DownloadProgressChangedEventArgs arg)
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=> downloadDialog.DownloadProgressChanged(arg.BytesReceived, arg.TotalBytesToReceive);
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void unsubscribe(object _ = null, EventArgs __ = null)
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{
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downloadable.DownloadBegin -= downloadBegin;
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downloadable.DownloadCompleted -= fileDownloadCompleted;
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downloadable.DownloadProgressChanged -= downloadProgressChanged;
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downloadable.Completed -= dialogDispose;
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}
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// unless we dispose, if the form is created but un-used/never-shown then weird UI stuff can happen
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// also, since event unsubscribe occurs on FormClosing and an unused form is never closed, then the events will never be unsubscribed
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void dialogDispose(object _, string __)
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{
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if (!downloadDialog.IsDisposed)
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downloadDialog.Dispose();
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}
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#endregion
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#region subscribe new form to model's events
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downloadable.DownloadBegin += downloadBegin;
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downloadable.DownloadCompleted += fileDownloadCompleted;
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downloadable.DownloadProgressChanged += downloadProgressChanged;
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downloadable.Completed += dialogDispose;
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#endregion
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#region when form closes, unsubscribe from model's events
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// unsubscribe so disposed forms aren't still trying to receive notifications
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// FormClosing is more UI safe but won't fire unless the form is shown and closed
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// if form was shown, Disposed will fire for FormClosing, FormClosed, and Disposed
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// if not shown, it will still fire for Disposed
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downloadDialog.Disposed += unsubscribe;
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#endregion
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}
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// subscribed to Begin event because a new form should be created+processed+closed on each iteration
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private static void wireUpDecryptable(IDecryptable decryptBook)
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{
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#region create form
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var decryptDialog = new DecryptForm();
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#endregion
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#region define how model actions will affect form behavior
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void decryptBegin(object _, string __) => decryptDialog.Show();
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void titleDiscovered(object _, string title) => decryptDialog.SetTitle(title);
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void authorsDiscovered(object _, string authors) => decryptDialog.SetAuthorNames(authors);
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void narratorsDiscovered(object _, string narrators) => decryptDialog.SetNarratorNames(narrators);
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void coverImageFilepathDiscovered(object _, byte[] coverBytes) => decryptDialog.SetCoverImage(coverBytes);
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void updateProgress(object _, int percentage) => decryptDialog.UpdateProgress(percentage);
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void decryptCompleted(object _, string __) => decryptDialog.Close();
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#endregion
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#region subscribe new form to model's events
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decryptBook.DecryptBegin += decryptBegin;
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decryptBook.TitleDiscovered += titleDiscovered;
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decryptBook.AuthorsDiscovered += authorsDiscovered;
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decryptBook.NarratorsDiscovered += narratorsDiscovered;
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decryptBook.CoverImageFilepathDiscovered += coverImageFilepathDiscovered;
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decryptBook.UpdateProgress += updateProgress;
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decryptBook.DecryptCompleted += decryptCompleted;
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#endregion
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#region when form closes, unsubscribe from model's events
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// unsubscribe so disposed forms aren't still trying to receive notifications
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decryptDialog.FormClosing += (_, __) =>
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{
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decryptBook.DecryptBegin -= decryptBegin;
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decryptBook.TitleDiscovered -= titleDiscovered;
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decryptBook.AuthorsDiscovered -= authorsDiscovered;
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decryptBook.NarratorsDiscovered -= narratorsDiscovered;
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decryptBook.CoverImageFilepathDiscovered -= coverImageFilepathDiscovered;
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decryptBook.UpdateProgress -= updateProgress;
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decryptBook.DecryptCompleted -= decryptCompleted;
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};
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#endregion
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}
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public static async Task RunAutomaticDownload(IDownloadable downloadable)
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{
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#region create form
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var automatedBackupsForm = new AutomatedBackupsForm();
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#endregion
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#region define how model actions will affect form behavior
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void begin(object _, string str) => automatedBackupsForm.AppendText("Begin: " + str);
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void statusUpdate(object _, string str) => automatedBackupsForm.AppendText("- " + str);
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// extra line after book is completely finished
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void completed(object _, string str) => automatedBackupsForm.AppendText("Completed: " + str + Environment.NewLine);
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#endregion
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#region subscribe new form to model's events
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downloadable.Begin += begin;
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downloadable.StatusUpdate += statusUpdate;
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downloadable.Completed += completed;
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#endregion
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#region when form closes, unsubscribe from model's events
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// unsubscribe so disposed forms aren't still trying to receive notifications
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automatedBackupsForm.FormClosing += (_, __) =>
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{
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downloadable.Begin -= begin;
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downloadable.StatusUpdate -= statusUpdate;
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downloadable.Completed -= completed;
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};
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#endregion
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await runBackupLoop(downloadable, automatedBackupsForm);
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}
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public static async Task RunAutomaticBackup(BackupBook backupBook)
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{
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#region create form
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var automatedBackupsForm = new AutomatedBackupsForm();
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#endregion
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#region define how model actions will affect form behavior
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void downloadBegin(object _, string str) => automatedBackupsForm.AppendText("DownloadStep_Begin: " + str);
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void statusUpdate(object _, string str) => automatedBackupsForm.AppendText("- " + str);
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void downloadCompleted(object _, string str) => automatedBackupsForm.AppendText("DownloadStep_Completed: " + str);
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void decryptBegin(object _, string str) => automatedBackupsForm.AppendText("DecryptStep_Begin: " + str);
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// extra line after book is completely finished
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void decryptCompleted(object _, string str) => automatedBackupsForm.AppendText("DecryptStep_Completed: " + str + Environment.NewLine);
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#endregion
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#region subscribe new form to model's events
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backupBook.Download.Begin += downloadBegin;
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backupBook.Download.StatusUpdate += statusUpdate;
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backupBook.Download.Completed += downloadCompleted;
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backupBook.Decrypt.Begin += decryptBegin;
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backupBook.Decrypt.StatusUpdate += statusUpdate;
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backupBook.Decrypt.Completed += decryptCompleted;
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#endregion
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#region when form closes, unsubscribe from model's events
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// unsubscribe so disposed forms aren't still trying to receive notifications
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automatedBackupsForm.FormClosing += (_, __) =>
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{
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backupBook.Download.Begin -= downloadBegin;
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backupBook.Download.StatusUpdate -= statusUpdate;
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backupBook.Download.Completed -= downloadCompleted;
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backupBook.Decrypt.Begin -= decryptBegin;
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backupBook.Decrypt.StatusUpdate -= statusUpdate;
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backupBook.Decrypt.Completed -= decryptCompleted;
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};
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#endregion
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await runBackupLoop(backupBook, automatedBackupsForm);
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}
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// automated backups looper feels like a composible IProcessable: logic, UI, begin + process child + end
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// however the process step doesn't follow the pattern: Validate(product) + Process(product)
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private static async Task runBackupLoop(IProcessable processable, AutomatedBackupsForm automatedBackupsForm)
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{
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automatedBackupsForm.Show();
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try
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{
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do
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{
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var statusHandler = await processable.ProcessFirstValidAsync();
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if (statusHandler == null)
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{
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automatedBackupsForm.AppendText("Done. All books have been processed");
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break;
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}
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if (statusHandler.HasErrors)
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{
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automatedBackupsForm.AppendText("ERROR. All books have not been processed. Most recent valid book: processing failed");
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foreach (var errorMessage in statusHandler.Errors)
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automatedBackupsForm.AppendText(errorMessage);
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break;
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}
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if (!automatedBackupsForm.KeepGoingIsChecked)
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{
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automatedBackupsForm.AppendText("'Keep going' is unchecked");
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break;
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}
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}
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while (automatedBackupsForm.KeepGoingIsChecked);
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}
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catch (Exception ex)
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{
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automatedBackupsForm.AppendError(ex);
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}
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automatedBackupsForm.FinalizeUI();
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}
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}
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}
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