feat: Validate args before ask for the master password

Fixes: #13

src/cli/add_command.rs

@@ -33,14 +33,6 @@ pub struct Add {
 
 impl LprsCommand for Add {
     fn run(mut self, mut vault_manager: Vaults<Plain>) -> LprsResult<()> {
-        if self.vault_info.username.is_none()
-            && self.password.is_none()
-            && self.vault_info.service.is_none()
-            && self.vault_info.note.is_none()
-        {
-            return Err(LprsError::Other("You can't add empty vault".to_owned()));
-        }
-
         match self.password {
             Some(Some(password)) => self.vault_info.password = Some(password),
             Some(None) => {
@@ -58,4 +50,15 @@ impl LprsCommand for Add {
         vault_manager.add_vault(self.vault_info);
         vault_manager.try_export()
     }
+
+    fn validate_args(&self) -> LprsResult<()> {
+        if self.vault_info.username.is_none()
+            && self.password.is_none()
+            && self.vault_info.service.is_none()
+            && self.vault_info.note.is_none()
+        {
+            return Err(LprsError::Other("You can't add empty vault".to_owned()));
+        }
+        Ok(())
+    }
 }

src/cli/edit_command.rs

@@ -58,17 +58,6 @@ impl LprsCommand for Edit {
             )));
         };
 
-        if self.name.is_none()
-            && self.username.is_none()
-            && self.password.is_none()
-            && self.service.is_none()
-            && self.note.is_none()
-        {
-            return Err(LprsError::Other(
-                "You must edit one option at least".to_owned(),
-            ));
-        }
-
         // Get the password from stdin or from its value if provided
         let password = match self.password {
             Some(Some(password)) => Some(password),
@@ -91,4 +80,18 @@ impl LprsCommand for Edit {
         );
         vault_manager.try_export()
     }
+
+    fn validate_args(&self) -> LprsResult<()> {
+        if self.name.is_none()
+            && self.username.is_none()
+            && self.password.is_none()
+            && self.service.is_none()
+            && self.note.is_none()
+        {
+            return Err(LprsError::Other(
+                "You must edit one option at least".to_owned(),
+            ));
+        }
+        Ok(())
+    }
 }

src/cli/export_command.rs

@@ -35,22 +35,24 @@ pub struct Export {
 
 impl LprsCommand for Export {
     fn run(self, vault_manager: Vaults<Plain>) -> LprsResult<()> {
+        let exported_data = match self.format {
+            Format::Lprs => {
+                serde_json::to_string::<Vec<Vault<Encrypted>>>(&vault_manager.encrypt_vaults()?)
+            }
+            Format::BitWarden => serde_json::to_string(&BitWardenPasswords::from(vault_manager)),
+        }?;
+
+        fs::write(&self.path, exported_data).map_err(LprsError::from)
+    }
+
+    fn validate_args(&self) -> LprsResult<()> {
         if self
             .path
             .extension()
             .is_some_and(|e| e.to_string_lossy().eq_ignore_ascii_case("json"))
         {
             if !self.path.exists() {
-                let exported_data = match self.format {
-                    Format::Lprs => serde_json::to_string::<Vec<Vault<Encrypted>>>(
-                        &vault_manager.encrypt_vaults()?,
-                    ),
-                    Format::BitWarden => {
-                        serde_json::to_string(&BitWardenPasswords::from(vault_manager))
-                    }
-                }?;
-
-                fs::write(&self.path, exported_data).map_err(LprsError::from)
+                Ok(())
             } else {
                 Err(LprsError::Io(IoError::new(
                     IoErrorKind::AlreadyExists,

src/cli/gen_command.rs

@@ -46,7 +46,6 @@ pub struct Gen {
 
 impl LprsCommand for Gen {
     fn run(self, _vault_manager: Vaults<Plain>) -> LprsResult<()> {
-        if self.uppercase || self.lowercase || self.numbers || self.symbols {
         println!(
             "{}",
             passwords::PasswordGenerator::new()
@@ -60,10 +59,14 @@ impl LprsCommand for Gen {
                 .expect("The length cannot be zero")
         );
         Ok(())
-        } else {
-            Err(LprsError::Other(
+    }
+
+    fn validate_args(&self) -> LprsResult<()> {
+        if !(self.uppercase || self.lowercase || self.numbers || self.symbols) {
+            return Err(LprsError::Other(
                 "You need to enable at least one kind of characters".to_owned(),
-            ))
-        }
+            ));
+        }
+        Ok(())
     }
 }

src/cli/import_command.rs

@@ -36,16 +36,9 @@ pub struct Import {
 
 impl LprsCommand for Import {
     fn run(self, mut vault_manager: Vaults<Plain>) -> LprsResult<()> {
-        if self.path.exists() {
-            if self
-                .path
-                .extension()
-                .is_some_and(|e| e.to_string_lossy().eq_ignore_ascii_case("json"))
-            {
         let imported_passwords_len = match self.format {
             Format::Lprs => {
-                        let vaults =
-                            Vaults::try_reload(self.path, vault_manager.master_password.to_vec())?;
+                let vaults = Vaults::try_reload(self.path, vault_manager.master_password.to_vec())?;
                 let vaults_len = vaults.vaults.len();
 
                 vault_manager.vaults.extend(vaults.vaults);
@@ -53,8 +46,7 @@ impl LprsCommand for Import {
                 vaults_len
             }
             Format::BitWarden => {
-                        let vaults: BitWardenPasswords =
-                            serde_json::from_reader(File::open(&self.path)?)?;
+                let vaults: BitWardenPasswords = serde_json::from_reader(File::open(&self.path)?)?;
                 let vaults_len = vaults.items.len();
 
                 vault_manager
@@ -68,7 +60,16 @@ impl LprsCommand for Import {
             "{imported_passwords_len} vault{s} were imported successfully",
             s = if imported_passwords_len >= 2 { "s" } else { "" }
         );
+        Ok(())
+    }
 
+    fn validate_args(&self) -> LprsResult<()> {
+        if self.path.exists() {
+            if self
+                .path
+                .extension()
+                .is_some_and(|e| e.to_string_lossy().eq_ignore_ascii_case("json"))
+            {
                 Ok(())
             } else {
                 Err(LprsError::Io(IoError::new(