fix: parameterize AddPost fallback UPDATE, guard args indexing

Posts.hasImage/DateModified fallback update built its WHERE clause via
raw string concatenation of blogName/postID, unlike every other query
in this method — a blog name containing a single quote would break or
inject into the query. Switch it to parameters.

--parse, --blogsO, and --bop indexed args[1..3] before checking
args.Length, so a missing argument threw IndexOutOfRangeException
instead of hitting the intended usage message.

.github/copilot-instructions.md

@@ -22,18 +22,18 @@ This document provides essential context for AI agents working with URLNotesGrab
 ```powershell
 dotnet build
 dotnet run            # Process all files in input directory
-dotnet run -- -parse [blogname]  # Process specific blog
-dotnet run -- -test [blogname] [postID]  # Test API for specific post
+dotnet run -- --parse [blogname]  # Process specific blog
+dotnet run -- --test [blogname] [postID]  # Test API for specific post
 ```
 
 ### Command-Line Interface
-- `-parse [blogname]`: Parse text files for specific blog
-- `-test [blogname] [postID]`: Test API note collection
-- `-posts`: Export post blogs to file
-- `-blogs`: Export blog list to file
-- `-collect`: Collect notes for all posts in DB
-- `-blogsR`: Export reply blogs to file
-- `-blogsO [start] [stop]`: Export blogs within range
+- `--parse [blogname]`: Parse text files for specific blog
+- `--test [blogname] [postID]`: Test API note collection
+- `--posts`: Export post blogs to file
+- `--blogs`: Export blog list to file
+- `--collect`: Collect notes for all posts in DB
+- `--blogsR`: Export reply blogs to file
+- `--blogsO [start] [stop]`: Export blogs within range
 
 ## Project Conventions
 

URLNotesGrabberCORE/DataAccess.cs

@@ -518,8 +518,12 @@ namespace URLNotesGrabberCORE
                         {
                             if (ownsConnection) connection.Open();
 
-                            string updateSql = "UPDATE Posts SET hasImage = " + (hasImage ? 1 : 0) + ", DateModified = '" + DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss") + "' WHERE blogName = '" + blogName + "' AND postID = '" + postID + "'";
-                            SQLiteCommand updateCommand = new SQLiteCommand(updateSql, connection);
+                            string updateSql = "UPDATE Posts SET hasImage = @hasImage, DateModified = @DateModified WHERE blogName = @blogName AND postID = @postID";
+                            using SQLiteCommand updateCommand = new SQLiteCommand(updateSql, connection);
+                            updateCommand.Parameters.AddWithValue("@hasImage", hasImage ? 1 : 0);
+                            updateCommand.Parameters.AddWithValue("@DateModified", DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss"));
+                            updateCommand.Parameters.AddWithValue("@blogName", blogName);
+                            updateCommand.Parameters.AddWithValue("@postID", postID);
 
                             updateCommand.ExecuteNonQuery();
                         }

URLNotesGrabberCORE/Program.cs

@@ -13,12 +13,27 @@ namespace URLNotesGrabberCORE
     internal class Program
     {
 
-        static void Main(string[] args)
+        static int Main(string[] args)
         {
             // Reset console color on exit (including Ctrl+C)
             Console.CancelKeyPress += (s, e) => Console.ResetColor();
             AppDomain.CurrentDomain.ProcessExit += (s, e) => Console.ResetColor();
 
+            try
+            {
+                return Run(args);
+            }
+            catch (Exception ex)
+            {
+                // Turn configuration errors / unguarded indexers into a quiet, deterministic exit code.
+                Console.Error.WriteLine(ex.Message);
+                return 1;
+            }
+        }
+
+        static int Run(string[] args)
+        {
+            int exitCode = 0;
             IConfiguration config = new ConfigurationBuilder()
                                     .SetBasePath(Directory.GetCurrentDirectory())
                                     .AddJsonFile("appsettings.json", optional: true, reloadOnChange: false)
@@ -33,31 +48,34 @@ namespace URLNotesGrabberCORE
             List<string> filteredArgs = new List<string>();
             for (int i = 0; i < args.Length; i++)
             {
-                if (string.Equals(args[i], "-force", StringComparison.OrdinalIgnoreCase) ||
-                    string.Equals(args[i], "--force", StringComparison.OrdinalIgnoreCase))
+                if (args[i] == "--")
+                {
+                    // POSIX end-of-options: everything after is a literal operand.
+                    for (int j = i + 1; j < args.Length; j++) filteredArgs.Add(args[j]);
+                    break;
+                }
+
+                if (string.Equals(args[i], "--force", StringComparison.OrdinalIgnoreCase))
                 {
                     forceIgnoreCooldown = true;
                     continue;
                 }
 
-                if (string.Equals(args[i], "-api3", StringComparison.OrdinalIgnoreCase) ||
-                    string.Equals(args[i], "--api3", StringComparison.OrdinalIgnoreCase))
+                if (string.Equals(args[i], "--api3", StringComparison.OrdinalIgnoreCase))
                 {
                     apiSectionName = "TumblrApi3";
                     apiExplicitlySet = true;
                     continue;
                 }
 
-                if (string.Equals(args[i], "-api4", StringComparison.OrdinalIgnoreCase) ||
-                    string.Equals(args[i], "--api4", StringComparison.OrdinalIgnoreCase))
+                if (string.Equals(args[i], "--api4", StringComparison.OrdinalIgnoreCase))
                 {
                     apiSectionName = "TumblrApi4";
                     apiExplicitlySet = true;
                     continue;
                 }
 
-                if (string.Equals(args[i], "-api", StringComparison.OrdinalIgnoreCase) ||
-                    string.Equals(args[i], "--api", StringComparison.OrdinalIgnoreCase))
+                if (string.Equals(args[i], "--api", StringComparison.OrdinalIgnoreCase))
                 {
                     if (i + 1 < args.Length && !string.IsNullOrWhiteSpace(args[i + 1]))
                     {
@@ -67,13 +85,12 @@ namespace URLNotesGrabberCORE
                     }
                     else
                     {
-                        Console.WriteLine("--Missing API section after -api/--api. Using default TumblrApi.--");
+                        Console.WriteLine("--Missing API section after --api. Using default TumblrApi.--");
                     }
                     continue;
                 }
 
-                if (string.Equals(args[i], "-start", StringComparison.OrdinalIgnoreCase) ||
-                    string.Equals(args[i], "--start", StringComparison.OrdinalIgnoreCase))
+                if (string.Equals(args[i], "--start", StringComparison.OrdinalIgnoreCase))
                 {
                     if (i + 1 < args.Length && !string.IsNullOrWhiteSpace(args[i + 1]))
                     {
@@ -82,7 +99,7 @@ namespace URLNotesGrabberCORE
                     }
                     else
                     {
-                        Console.WriteLine("--Missing blog name after -start/--start. Ignoring.--");
+                        Console.WriteLine("--Missing blog name after --start. Ignoring.--");
                     }
                     continue;
                 }
@@ -147,57 +164,23 @@ namespace URLNotesGrabberCORE
                 switch (args[0])
                 {
                     case "-?":
-                        Console.WriteLine("\t Parse .txt files to find blogs");
-
-                        Console.WriteLine("-?\t Usage help");
-
-                        Console.WriteLine("-parse\t Parse .txt files with specified blogname");
-
-                        Console.WriteLine("-test\t Calls API for given blogname and postID");
-
-                        Console.WriteLine("-posts\t For each Post in DB, write blogname to file");
-
-                        Console.WriteLine("-blogs\t For each Blog in DB, write blogname to file");
-
-                        Console.WriteLine("-collect [0|1] [datetime]\t Collect Notes from API. 1=only posts without notes. 0=full re-check of all posts: a single resumable pass (interrupt & relaunch to resume; stops when complete, retrigger for a new pass). Optional datetime overrides the cutoff and runs as a one-off (bypasses resume tracking).");
-
-                        Console.WriteLine("-blogsR\t For each Note that is a REPLY, write blogname to file ");
-
-                        Console.WriteLine("-blogsO\t For each Blog in DB, write blogname to file, but limit via a passed start and stop range ");
-
-                        Console.WriteLine("-replies\t Fetch and update missing reply text for all replies in database");
-
-                        Console.WriteLine("-likes\t Fetch likes: initial backfill for new blogs, incremental refresh for blogs past cooldown. Optional blog name forces single-blog run.");
-
-                        Console.WriteLine("-force\t (with -likes) Ignore cooldown and refresh every fully-backfilled blog");
-
-                        Console.WriteLine("-urldump\t Scan all posts' text columns and extract suspected URLs to configured file");
-
-                        Console.WriteLine("-api3\t Use TumblrApi3 settings from appsettings.json");
-
-                        Console.WriteLine("-api4\t Use TumblrApi4 settings from appsettings.json");
-
-                        Console.WriteLine("-start [blogname]\t Start traversal alphabetically at this blog name");
-
-                        Console.WriteLine("-api [section]\t Use a specific API settings section from appsettings.json (e.g. TumblrApi3)");
-
-                        Console.WriteLine("-ingest [blogname]\t Ingest Tumblr .txt exports from appSettings:PathTTRoot into TL.db (all blogs, or single blog if name given)");
-
-                        Console.WriteLine("-output\t Export posts from TL.db back to .txt files in each blog's TTFolderPath");
-
-                        Console.WriteLine("-revert [blogname]\t Recursively scan the PathInput tree and restore *.bak back to *.txt (current .txt saved as next-free .bkN); optional blogname filters by path substring");
-
-                        Console.WriteLine("-correct [bakPath]\t Dry-run: report multi-line field updates available from a BAK directory");
-
-                        Console.WriteLine("-correct -apply [bakPath]\t Apply BAK-file corrections to matching posts (prompts yes/no)");
-
-                        Console.WriteLine("-updatepaths [rootPath]\t Read .tumblr/.tmblrpriv metadata from <root>\\Index and set Blogs.TTFolderPath");
-
-                        Console.WriteLine("-importposts [path-to-posts.db]\t One-time migration: copy legacy ThreeTxtFileHelper posts.db rows into TL.db");
-
+                    case "-h":
+                    case "--help":
+                        PrintHelp();
                         break;
-                    
-                    case "-parse":
+
+                    case "-V":
+                    case "--version":
+                        Console.WriteLine(System.Reflection.Assembly.GetExecutingAssembly().GetName().Version?.ToString() ?? "unknown");
+                        break;
+
+                    case "--parse":
+                        if (args.Length < 2)
+                        {
+                            Console.WriteLine("Usage: --parse <blogname>");
+                            exitCode = 2;
+                            break;
+                        }
                         string blogNameToParse = args[1];
                         int postsAdded = 0;
                         try
@@ -212,23 +195,23 @@ namespace URLNotesGrabberCORE
                         Console.WriteLine($"Total posts added: {postsAdded}");
                         break;
                     
-                    case "-test":
+                    case "--test":
                         Console.WriteLine("Test command not implemented");
                         break;
 
-                    case "-post":
+                    case "--post":
                         TraverseDirectoryForCorruption(settings.GetValue<string>("PathInput"), settings.GetValue<string>("PathOutputBlogs"), contains);
                         break;
 
-                    case "-posts": //write post's blogs to file
+                    case "--posts": //write post's blogs to file
                         WritePostBlogsToFile(settings.GetValue<string>("PathOutputPosts"));
                         break;
 
-                    case "-blogs": //write blogs to file
+                    case "--blogs": //write blogs to file
                         WriteBlogsToFile(settings.GetValue<string>("PathOutputBlogs"));
                         break;
 
-                    case "-collect": //collect notes from all posts
+                    case "--collect": //collect notes from all posts
                         bool withoutNotesOnly = true;
                         DateTime? beforeDate = DateTime.Now;
                         bool explicitDateSupplied = false;
@@ -236,6 +219,7 @@ namespace URLNotesGrabberCORE
                         if (args.Length < 2)
                         {
                             Console.WriteLine("--Expected WITHOUTNOTESONLY (0, 1) [OPTIONAL: BEFOREDATE]--");
+                            exitCode = 2;
                             break;
                         }
 
@@ -268,6 +252,7 @@ namespace URLNotesGrabberCORE
                             else
                             {
                                 Console.WriteLine($"ERROR: Invalid date format '{args[2]}'");
+                                exitCode = 2;
                                 break;
                             }
                         }
@@ -297,14 +282,14 @@ namespace URLNotesGrabberCORE
                         CollectNotes(settings.GetValue<string>("PathOutput"), withoutNotesOnly, beforeDate, managedCollectRun).GetAwaiter().GetResult();
                         break;
 
-                    case "-blogsR": //collect notes from all posts
+                    case "--blogsR": //collect notes from all posts
                         WriteBlogsToFile(settings.GetValue<string>("PathOutputBlogs"), true);
                         break;
 
-                    case "-blogsO": //collect notes from all posts
+                    case "--blogsO": //collect notes from all posts
                         int from = 1, to = 999999, top = 100;
 
-                        if (args[1] is not null && args[2] is not null && args[3] is not null)
+                        if (args.Length >= 4 && args[1] is not null && args[2] is not null && args[3] is not null)
                         {
                             from = int.Parse(args[1]);
                             to = int.Parse(args[2]);
@@ -313,14 +298,16 @@ namespace URLNotesGrabberCORE
                         else
                         {
                             Console.WriteLine("--Expected FROM TO--");
+                            exitCode = 2;
+                            break;
                         }
                         WriteBlogsToFile(settings.GetValue<string>("PathOutputBlogs"), false, from, to, top);
                         break;
 
-                    case "-bop": //collect notes from all posts
+                    case "--bop": //collect notes from all posts
                         from = 1; to = 999999; top = 100;
 
-                        if (args[1] is not null && args[2] is not null && args[3] is not null)
+                        if (args.Length >= 4 && args[1] is not null && args[2] is not null && args[3] is not null)
                         {
                             from = int.Parse(args[1]);
                             to = int.Parse(args[2]);
@@ -329,66 +316,70 @@ namespace URLNotesGrabberCORE
                         else
                         {
                             Console.WriteLine("--Expected FROM TO--");
+                            exitCode = 2;
+                            break;
                         }
                         WriteBlogsToFileAll(settings.GetValue<string>("PathOutputBlogs"), false, from, to, top);
                         break;
 
-                    case "-replies": //update reply text
+                    case "--replies": //update reply text
                         CollectMissingReplyText().GetAwaiter().GetResult();
                         break;
 
-                    case "-likes":
+                    case "--likes":
                         string likeBlog = args.Length > 1 ? args[1] : null;
                         int cooldownDays = settings.GetValue("LikesRefreshCooldownDays", 7);
                         CollectLikes(likeBlog, contains, cooldownDays, forceIgnoreCooldown).GetAwaiter().GetResult();
                         break;
 
-                    case "-urldump":
+                    case "--urldump":
                         DumpUrls(settings.GetValue<string>("PathOutputUrls"));
                         break;
 
-                    case "-ingest":
-                        IngestMode.Run(config, args.Skip(1).ToArray());
+                    case "--ingest":
+                        exitCode = IngestMode.Run(config, args.Skip(1).ToArray());
                         break;
 
-                    case "-output":
-                        OutputMode.Run(config);
+                    case "--output":
+                        exitCode = OutputMode.Run(config);
                         break;
 
-                    case "-revert":
-                        RevertMode.Run(config, args.Length > 1 ? args[1] : null);
+                    case "--revert":
+                        exitCode = RevertMode.Run(config, args.Length > 1 ? args[1] : null);
                         break;
 
-                    case "-correct":
+                    case "--correct":
                     {
-                        bool applyChanges = args.Skip(1).Any(a => string.Equals(a, "-apply", StringComparison.OrdinalIgnoreCase) || string.Equals(a, "--apply", StringComparison.OrdinalIgnoreCase));
+                        bool applyChanges = args.Skip(1).Any(a => string.Equals(a, "--apply", StringComparison.OrdinalIgnoreCase));
                         var correctArgs = args.Skip(1)
-                            .Where(a => !string.Equals(a, "-apply", StringComparison.OrdinalIgnoreCase) && !string.Equals(a, "--apply", StringComparison.OrdinalIgnoreCase))
+                            .Where(a => !string.Equals(a, "--apply", StringComparison.OrdinalIgnoreCase))
                             .ToArray();
-                        CorrectMode.Run(config, correctArgs, applyChanges);
+                        exitCode = CorrectMode.Run(config, correctArgs, applyChanges);
                         break;
                     }
 
-                    case "-updatepaths":
+                    case "--updatepaths":
                     {
                         string rootPath = args.Length > 1 ? args[1] : (settings.GetValue<string>("PathTTRoot") ?? settings.GetValue<string>("PathInput") ?? string.Empty);
-                        UpdateBlogPathsRunner.Run(rootPath);
+                        exitCode = UpdateBlogPathsRunner.Run(rootPath);
                         break;
                     }
 
-                    case "-importposts":
+                    case "--importposts":
                     {
                         if (args.Length < 2)
                         {
-                            Console.WriteLine("Usage: -importposts <path-to-legacy-posts.db>");
+                            Console.WriteLine("Usage: --importposts <path-to-legacy-posts.db>");
+                            exitCode = 2;
                             break;
                         }
-                        LegacyPostsDbImporter.Run(args[1]);
+                        exitCode = LegacyPostsDbImporter.Run(args[1]);
                         break;
                     }
 
                     default:
                         Console.WriteLine("** Unknown Command ** " + args[0]);
+                        exitCode = 2;
                         break;
                 }
             }
@@ -397,6 +388,69 @@ namespace URLNotesGrabberCORE
 
             System.Console.WriteLine("<fin>:/");
             //System.Console.ReadKey();
+            return exitCode;
+        }
+
+        static void PrintHelp()
+        {
+            Console.WriteLine("\t Parse .txt files to find blogs");
+
+            Console.WriteLine("-?, -h, --help\t Usage help");
+
+            Console.WriteLine("-V, --version\t Print the application version");
+
+            Console.WriteLine("--\t End of options: treat every following token as a literal operand");
+
+            Console.WriteLine("--parse\t Parse .txt files with specified blogname");
+
+            Console.WriteLine("--test\t Calls API for given blogname and postID");
+
+            Console.WriteLine("--post\t Traverse the input directory tree checking .txt files for corruption");
+
+            Console.WriteLine("--posts\t For each Post in DB, write blogname to file");
+
+            Console.WriteLine("--blogs\t For each Blog in DB, write blogname to file");
+
+            Console.WriteLine("--collect [0|1] [datetime]\t Collect Notes from API. 1=only posts without notes. 0=full re-check of all posts: a single resumable pass (interrupt & relaunch to resume; stops when complete, retrigger for a new pass). Optional datetime overrides the cutoff and runs as a one-off (bypasses resume tracking).");
+
+            Console.WriteLine("--blogsR\t For each Note that is a REPLY, write blogname to file ");
+
+            Console.WriteLine("--blogsO\t For each Blog in DB, write blogname to file, but limit via a passed start and stop range ");
+
+            Console.WriteLine("--bop [from] [to] [top]\t Write ALL blog names to file, limited by FROM TO TOP range arguments");
+
+            Console.WriteLine("--replies\t Fetch and update missing reply text for all replies in database");
+
+            Console.WriteLine("--likes\t Fetch likes: initial backfill for new blogs, incremental refresh for blogs past cooldown. Optional blog name forces single-blog run.");
+
+            Console.WriteLine("--force\t (with --likes) Ignore cooldown and refresh every fully-backfilled blog");
+
+            Console.WriteLine("--urldump\t Scan all posts' text columns and extract suspected URLs to configured file");
+
+            Console.WriteLine("--api3\t Use TumblrApi3 settings from appsettings.json");
+
+            Console.WriteLine("--api4\t Use TumblrApi4 settings from appsettings.json");
+
+            Console.WriteLine("--start [blogname]\t Start traversal alphabetically at this blog name");
+
+            Console.WriteLine("--api [section]\t Use a specific API settings section from appsettings.json (e.g. TumblrApi3)");
+
+            Console.WriteLine("--ingest [blogname]\t Ingest Tumblr .txt exports from appSettings:PathTTRoot into TL.db (all blogs, or single blog if name given)");
+
+            Console.WriteLine("--output\t Export posts from TL.db back to .txt files in each blog's TTFolderPath");
+
+            Console.WriteLine("--revert [blogname]\t Recursively scan the PathInput tree and restore *.bak back to *.txt (current .txt saved as next-free .bkN); optional blogname filters by path substring");
+
+            Console.WriteLine("--correct [bakPath]\t Dry-run: report multi-line field updates available from a BAK directory");
+
+            Console.WriteLine("--correct --apply [bakPath]\t Apply BAK-file corrections to matching posts (prompts yes/no)");
+
+            Console.WriteLine("--updatepaths [rootPath]\t Read .tumblr/.tmblrpriv metadata from <root>\\Index and set Blogs.TTFolderPath");
+
+            Console.WriteLine("--importposts [path-to-posts.db]\t One-time migration: copy legacy ThreeTxtFileHelper posts.db rows into TL.db");
+
+            Console.WriteLine();
+            Console.WriteLine("Exit status: 0 = success; 1 = unexpected error; 2 = usage error (unknown command or bad/missing arguments)");
         }
 
         static void WritePostBlogsToFile(string outPath)

URLNotesGrabberCORE/Properties/launchSettings.json

@@ -2,7 +2,7 @@
   "profiles": {
     "URLNotesGrabberCORE": {
       "commandName": "Project",
-      "commandLineArgs": "-collect 1 -api4"
+      "commandLineArgs": "--collect 1 --api4"
     }
   }
 }