[FlashpointManager] Attempt to fix configuration file if invalid

Author: WumboSpasm

FlashpointManager/src/Common.cs

@@ -330,8 +330,6 @@ public static void SyncManager(bool init = false)
                     {
                         string localHash = File.ReadLines(component.InfoFile).First().Split(' ')[0];
                         outdated = localHash != component.Hash && component.ID != "core-database";
-
-                        if (outdated) MessageBox.Show(localHash + " " + component.Hash);
                     }
                     else if (component.Required)
                     {
@@ -468,7 +466,7 @@ public static void DeleteFileAndDirectories(string file)
             }
 
             // Checks if specified Flashpoint source path is valid
-            public static void VerifySourcePath()
+            public static bool VerifySourcePath()
             {
                 bool isFlashpoint = false;
 
@@ -482,15 +480,28 @@ public static void VerifySourcePath()
                     }
                 });
 
-                if (!isFlashpoint)
+                return isFlashpoint;
+            }
+
+            // Writes new values to the configuration file
+            public static bool WriteConfig(string path, string source)
+            {
+                try
+                {
+                    File.WriteAllLines("fpm.cfg", new[] { path, source });
+                }
+                catch
                 {
                     MessageBox.Show(
-                        "The Flashpoint directory specified in fpm.cfg is invalid!",
+                        "Could not write to configuration file (fpm.cfg)." +
+                        "Make sure it is not being used by another program.",
                         "Error", MessageBoxButtons.OK, MessageBoxIcon.Error
                     );
 
-                    Environment.Exit(1);
+                    return false;
                 }
+
+                return true;
             }
 
             // Checks if any dependencies were not marked for download by the user, and marks them accordingly

FlashpointManager/src/Forms/Settings.cs

@@ -46,20 +46,7 @@ private void BrowseButton_Click(object sender, EventArgs e)
 
         private void SaveButton_Click(object sender, EventArgs e)
         {
-            try
-            {
-                File.WriteAllLines("fpm.cfg", new[] { LocationBox.Text, RepositoryBox.Text });
-            }
-            catch
-            {
-                MessageBox.Show(
-                    "Could not write to configuration file (fpm.cfg)." +
-                    "Make sure it is not being used by another program.",
-                    "Error", MessageBoxButtons.OK, MessageBoxIcon.Error
-                );
-
-                return;
-            }
+            if (!FPM.WriteConfig(LocationBox.Text, RepositoryBox.Text)) return;
 
             Application.Restart();
         }

FlashpointManager/src/Program.cs

@@ -7,6 +7,7 @@
 using System.Xml;
 
 using FlashpointManager.Common;
+using Microsoft.WindowsAPICodePack.Dialogs;
 
 namespace FlashpointManager
 {
@@ -63,26 +64,70 @@ static void Main(string[] args)
                 }
             }
 
+            bool updateConfig = false;
+
             // Download and parse component list
-            try
+            while (true)
             {
-                var listStream = new MemoryStream(new WebClient().DownloadData(FPM.RepoXml)) { Position = 0 };
+                MemoryStream listStream = null;
+
+                try
+                {
+                    listStream = new MemoryStream(new WebClient().DownloadData(FPM.RepoXml)) { Position = 0 };
+                }
+                catch
+                {
+                    bool suggestReset = FPM.RepoXml != FPM.RepoXmlTemplates.Stable;
+
+                    var errorDialog = MessageBox.Show(
+                        "The component list could not be downloaded!\n\n" +
+                        "Verify that your internet connection is working. " + (suggestReset ?
+                        "If it is, the component source may be misconfigured. Click OK to switch to the default component source."
+                        : ""), "Error", suggestReset ? MessageBoxButtons.OKCancel : MessageBoxButtons.OK, MessageBoxIcon.Error
+                    );
+
+                    if (suggestReset && errorDialog == DialogResult.OK)
+                    {
+                        FPM.RepoXml = FPM.RepoXmlTemplates.Stable;
+                        updateConfig = true;
+
+                        continue;
+                    }
+
+                    Environment.Exit(1);
+                }
 
                 FPM.XmlTree = new XmlDocument();
                 FPM.XmlTree.Load(listStream);
+
+                break;
             }
-            catch
+
+            // Verify that the configured Flashpoint path is valid
+            while (!FPM.VerifySourcePath())
             {
                 MessageBox.Show(
-                    "The component list could not be downloaded! Do you have an internet connection?",
+                    "The Flashpoint directory specified in fpm.cfg is invalid!\n\n" + 
+                    "Please choose a valid directory.",
                     "Error", MessageBoxButtons.OK, MessageBoxIcon.Error
                 );
 
-                Environment.Exit(1);
+                var pathDialog = new CommonOpenFileDialog() { IsFolderPicker = true };
+
+                if (pathDialog.ShowDialog() == CommonFileDialogResult.Cancel)
+                {
+                    Environment.Exit(1);
+                }
+
+                FPM.SourcePath = pathDialog.FileName;
+                updateConfig = true;
             }
 
-            // Verify that the configured Flashpoint path is valid
-            FPM.VerifySourcePath();
+            // Write new values to configuration file if needed
+            if (updateConfig && !FPM.WriteConfig(FPM.SourcePath, FPM.RepoXml))
+            {
+                Environment.Exit(1);
+            }
 
             if (args.Length > 0)
             {