Add generate command

src/cli/gen_command.rs

@@ -0,0 +1,66 @@
+// Local CLI password manager
+// Copyright (C) 2024  Awiteb
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/gpl-3.0.html>.
+
+use std::num::NonZeroU64;
+
+use clap::Args;
+
+use crate::{password::Passwords, PassrsError, PassrsResult, RunCommand};
+
+#[derive(Debug, Args)]
+#[command(author, version, about, long_about = None)]
+pub struct Gen {
+    /// The password length
+    #[arg(default_value_t = NonZeroU64::new(18).unwrap())]
+    length: NonZeroU64,
+
+    /// With uppercase letters (A-Z)
+    #[arg(short, long)]
+    uppercase: bool,
+    /// With lowercase letters (a-z)
+    #[arg(short, long)]
+    lowercase: bool,
+    /// With numbers (0-9)
+    #[arg(short, long)]
+    numbers: bool,
+    /// With symbols (!,# ...)
+    #[arg(short, long)]
+    symbols: bool,
+}
+
+impl RunCommand for Gen {
+    fn run(&self, _password_manager: Passwords) -> PassrsResult<()> {
+        if self.uppercase || self.lowercase || self.numbers || self.symbols {
+            println!(
+                "{}",
+                passwords::PasswordGenerator::new()
+                    .length(self.length.get() as usize)
+                    .uppercase_letters(self.uppercase)
+                    .lowercase_letters(self.lowercase)
+                    .numbers(self.numbers)
+                    .symbols(self.symbols)
+                    .strict(true)
+                    .generate_one()
+                    .expect("The length cannot be zero")
+            );
+            Ok(())
+        } else {
+            Err(PassrsError::Other(
+                "You need to enable at least one kind of characters".to_owned(),
+            ))
+        }
+    }
+}

src/cli/mod.rs

@@ -26,6 +26,7 @@ use crate::{
 pub mod add_command;
 pub mod clean_command;
 pub mod edit_command;
+pub mod gen_command;
 pub mod list_command;
 
 crate::create_commands!(
@@ -34,6 +35,7 @@ crate::create_commands!(
     "List your password and search", List => list_command::List
     "Clean the password file", Clean => clean_command::Clean
     "Edit the password content", Edit => edit_command::Edit
+    "Generate password", Gen => gen_command::Gen
     // TODO: Remove command
     // TODO: Export command
     // TODO: Import command
@@ -63,7 +65,7 @@ impl Cli {
             "Getting password file: {}",
             passwords_file.to_string_lossy()
         );
-        let password_manager = if matches!(self.command, Commands::Clean(..)) {
+        let password_manager = if matches!(self.command, Commands::Clean(..) | Commands::Gen(..)) {
             Passwords {
                 passwords_file,
                 ..Default::default()