Merge pull request #3 from TheAwiteb/gen-command

Gen command

README.md

@@ -35,6 +35,7 @@ Commands:
   list   List your password and search
   clean  Clean the password file
   edit   Edit the password content
+  gen    Generate password
   help   Print this message or the help of the given subcommand(s)
 
 Options:
@@ -46,6 +47,24 @@ Options:
           Print version
 ```
 
+### Example
+```bash
+passrs add -n "Gmail" -u "some@gmail.com" -p $(passrs gen 19 -u -l -s) -s "https://mail.google.com"
+```
+
+#### Result
+This is the result when search for it
+```
+$ passrs list -e "mail" -p -s
+Master Password: ***************
++-------+-------+----------------+---------------------+-------------------------+
+| Index | Name  | Username       | Password            | Service                 |
++================================================================================+
+| 31    | Gmail | some@gmail.com | >NC`q$%+Nno<y&<y]VB | https://mail.google.com |
++-------+-------+----------------+---------------------+-------------------------+
+```
+
+
 <!--
 ### Backup
 

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/list_command.rs

@@ -51,7 +51,9 @@ pub struct List {
 impl RunCommand for List {
     fn run(&self, password_manager: Passwords) -> PassrsResult<()> {
         if password_manager.passwords.is_empty() {
-            println!("Looks like there is no passwords to list")
+            Err(PassrsError::Other(
+                "Looks like there is no passwords to list".to_owned(),
+            ))
         } else {
             if self.get.is_some() && self.search.is_some() {
                 return Err(PassrsError::ArgsConflict(
@@ -132,7 +134,7 @@ impl RunCommand for List {
                 table.add_row(row);
             }
             println!("{table}");
-        }
             Ok(())
         }
+    }
 }

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
@@ -63,6 +65,12 @@ impl Cli {
             "Getting password file: {}",
             passwords_file.to_string_lossy()
         );
+        let password_manager = if matches!(self.command, Commands::Clean(..) | Commands::Gen(..)) {
+            Passwords {
+                passwords_file,
+                ..Default::default()
+            }
+        } else {
             let password = scanpw::scanpw!("Master Password: ");
 
             if password::is_new_password_file(&passwords_file)? {
@@ -79,10 +87,11 @@ impl Cli {
             }
 
             let master_password = sha256::digest(password);
-        let password_manager = Passwords::try_reload(
+            Passwords::try_reload(
                 passwords_file,
                 master_password.into_bytes().into_iter().take(32).collect(),
-        )?;
+            )?
+        };
         self.command.run(password_manager)?;
 
         Ok(())

src/password/mod.rs

@@ -27,7 +27,7 @@ mod validator;
 pub use validator::*;
 
 /// The passwords manager
-#[derive(Deserialize, Serialize)]
+#[derive(Default, Deserialize, Serialize)]
 pub struct Passwords {
     /// Hash of the master password
     #[serde(skip)]