From 65054f175681b2093be450154ce2dc5dcb01ef55 Mon Sep 17 00:00:00 2001
From: TeamDman <TeamDman9201@gmail.com>
Date: Sun, 11 Jan 2026 14:13:48 -0500
Subject: [PATCH] Add CLI to open file

---
 src/app/thoth_app.rs | 10 ++++++++--
 src/main.rs          | 16 ++++++++++++----
 2 files changed, 20 insertions(+), 6 deletions(-)

diff --git a/src/app/thoth_app.rs b/src/app/thoth_app.rs
index b8be84a..e9ef1c0 100644
--- a/src/app/thoth_app.rs
+++ b/src/app/thoth_app.rs
@@ -32,8 +32,8 @@ pub struct ThothApp {
 }
 
 impl ThothApp {
-    /// Create a new ThothApp with loaded settings
-    pub fn new(settings: settings::Settings) -> Self {
+    /// Create a new ThothApp with loaded settings and optional initial file to open
+    pub fn new(settings: settings::Settings, initial_file: Option<std::path::PathBuf>) -> Self {
         // Load persistent state (recent files, sidebar width, etc.)
         let persistent_state = PersistentState::default();
 
@@ -43,6 +43,12 @@ impl ThothApp {
             window_state.sidebar_expanded = persistent_state.get_sidebar_expanded();
         }
 
+        // If an initial file was provided via CLI, set it so central panel will attempt to open it on first render
+        if let Some(path) = initial_file {
+            window_state.file_path = Some(path);
+            window_state.error = None;
+        }
+
         // Initialize navigation history with configured size
         window_state.navigation_history =
             state::NavigationHistory::with_capacity(settings.performance.navigation_history_size);
diff --git a/src/main.rs b/src/main.rs
index 36d0bb1..10657a3 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -39,9 +39,17 @@ fn main() -> Result<()> {
     // Note: Settings mode is no longer supported
     // Settings are now opened via viewport mode from the main application
     //
-    // // Check if launched in settings mode
-    // let args: Vec<String> = std::env::args().collect();
-    // let is_settings_mode = args.iter().any(|arg| arg == "--settings");
+    // Parse simple CLI flags: --help / -h and optional FILE arg
+    let mut cli_file: Option<std::path::PathBuf> = None;
+    for arg in std::env::args_os().skip(1) {
+        if arg == std::ffi::OsString::from("--help") || arg == std::ffi::OsString::from("-h") {
+            println!("Thoth — JSON & NDJSON Viewer\n\nUsage: thoth [OPTIONS] [FILE]\n\nOptions:\n  -h, --help    Show this help message\n\nIf a FILE is supplied, Thoth will open it on startup.");
+            return Ok(());
+        }
+        // First non-flag arg is treated as file path
+        cli_file = Some(std::path::PathBuf::from(arg));
+        break;
+    }
 
     // Load settings first
     let settings = settings::Settings::load().unwrap_or_else(|e| {
@@ -84,7 +92,7 @@ fn main() -> Result<()> {
             egui_phosphor::add_to_fonts(&mut fonts, egui_phosphor::Variant::Regular);
             cc.egui_ctx.set_fonts(fonts);
 
-            Ok(Box::new(app::ThothApp::new(settings)))
+            Ok(Box::new(app::ThothApp::new(settings, cli_file)))
         }),
     );