Prompt the user for a project name if it can't find the database file

src/app.rs

@@ -169,7 +169,7 @@ impl Project {
     pub fn load(path: String, mut file: &File) -> Result<Self, KanbanError> {
         let mut json = String::new();
         file.read_to_string(&mut json)?;
-        if json.is_empty() {
+        if json.trim().is_empty() {
             Ok(Project::new("", path))
         } else {
             Self::load_from_json(&json)

src/main.rs

@@ -6,29 +6,47 @@ use crossterm::{
     event::*,
     terminal::{disable_raw_mode, enable_raw_mode, EnterAlternateScreen, LeaveAlternateScreen},
 };
-use std::{io, env, path::PathBuf, fs::{File, OpenOptions}, error::Error};
+use std::{io::{self, Write}, env, path::PathBuf, fs::{File, OpenOptions}, error::Error};
 use tui::backend::CrosstermBackend;
 use tui::Terminal;
-use clap::Parser;
+use clap::{Parser, ValueHint::FilePath};
 
 #[derive(Debug, Parser)]
 #[command(name = "kanban")]
 /// kanban-tui is a simple, interactive TUI based task manager using kanban columns
 pub struct CliArgs {
-    #[arg(short('d'), long("database"), value_name="DATABASE")]
+    #[arg(short('d'), long("database"), value_name="DATABASE", value_hint=FilePath)]
     /// Path to the
     pub filepath: Option<PathBuf>
 }
 
-fn prompt_project_init() -> (String, io::Result<File>) {
-    let _msg = "Database not found, would you like to start a new project?";
-    let filepath = "kanban.json";
-    (filepath.to_string(),
+const DEFAULT_DATABASE_NAME: &str = "kanban.json";
+
+fn prompt_project_init(default_name: &str) -> (String, io::Result<File>) {
+    let mut input = String::new();
+
+    println!("Database not found, select the name of the database if it exists or enter a name to start a new project");
+    print!("Database name (default: {}): ", default_name);
+    io::stdout().flush().unwrap();
+
+    let result = io::stdin().read_line(&mut input);
+    let input = input.trim();
+
+    let filename =
+        match result {
+            Ok(b) if b > 0 && !input.is_empty() => input,
+            _ => default_name
+        };
+
+    // TODO: This might be a good time to prompt the user if they want
+    // to change the default column names
+
+    (filename.to_string(),
      OpenOptions::new()
      .write(true)
      .read(true)
      .create(true)
-     .open(filepath))
+     .open(filename))
 }
 
 fn main() -> anyhow::Result<(), Box<dyn Error>> {
@@ -39,20 +57,27 @@ fn main() -> anyhow::Result<(), Box<dyn Error>> {
                 let file = OpenOptions::new()
                     .write(true)
                     .read(true)
-                    .create(true)
                     .open(&fpath);
 
                 match file {
                     Ok(f) => (fpath, f),
                     Err(_) => {
-                        let (fp, fname) = prompt_project_init();
+                        let (fp, fname) = prompt_project_init(&fpath);
                         (fp, fname.unwrap())
                     }
                 }
             },
             CliArgs { filepath: None } => {
-                let (fp, fname) = prompt_project_init();
-                (fp, fname.unwrap())
+                let file = OpenOptions::new()
+                    .write(true)
+                    .read(true)
+                    .open(DEFAULT_DATABASE_NAME);
+                if let Ok(f) = file {
+                    (DEFAULT_DATABASE_NAME.to_string(), f)
+                } else {
+                    let (fp, fname) = prompt_project_init(DEFAULT_DATABASE_NAME);
+                    (fp, fname.unwrap())
+                }
             }
         };
     let mut state = AppState::new(Project::load(filepath, &file)?);
@@ -68,7 +93,7 @@ fn main() -> anyhow::Result<(), Box<dyn Error>> {
         kanban_tui::handle_input(&mut state)?;
     }
 
-    state.project.save();
+    // state.project.save();
 
     // restore terminal
     disable_raw_mode()?;