frost-client: allow removing contacts and groups (#400)

* remove username and password support

* remove sqlx dependency

* frost-client: allow removing contacts and groups

frost-client/src/args.rs

@@ -44,6 +44,16 @@ pub(crate) enum Command {
         #[arg(short, long)]
         config: Option<String>,
     },
+    /// Remove a contact from the user's address book.
+    RemoveContact {
+        /// The path to the config file to manage. If not specified, it uses
+        /// $HOME/.local/frost/credentials.toml
+        #[arg(short, long)]
+        config: Option<String>,
+        /// The public key of the contact to remove (list with `contacts`).
+        #[arg(short, long)]
+        pubkey: String,
+    },
     TrustedDealer {
         /// The path to the config file to manage.
         ///
@@ -81,6 +91,17 @@ pub(crate) enum Command {
         #[arg(short, long)]
         config: Option<String>,
     },
+    /// Remove a group from the config.
+    RemoveGroup {
+        /// The path to the config file to manage. If not specified, it uses
+        /// $HOME/.local/frost/credentials.toml
+        #[arg(short, long)]
+        config: Option<String>,
+        /// The group to remove, identified by the group public key (use
+        /// `groups` to list)
+        #[arg(short, long)]
+        group: String,
+    },
     Coordinator {
         /// The path to the config file to manage. If not specified, it uses
         /// $HOME/.local/frost/credentials.toml

frost-client/src/contact.rs

@@ -1,6 +1,6 @@
 use std::error::Error;
 
-use eyre::eyre;
+use eyre::{eyre, OptionExt};
 use serde::{Deserialize, Serialize};
 
 use crate::{args::Command, config::Config};
@@ -124,3 +124,31 @@ pub(crate) fn list(args: &Command) -> Result<(), Box<dyn Error>> {
 
     Ok(())
 }
+
+/// Remove a contact from the user's address book in the config file.
+pub(crate) fn remove(args: &Command) -> Result<(), Box<dyn Error>> {
+    let Command::RemoveContact { config, pubkey } = (*args).clone() else {
+        panic!("invalid Command");
+    };
+
+    let mut config = Config::read(config)?;
+
+    let name = config
+        .contact
+        .iter()
+        .find_map(|(name, c)| {
+            if hex::encode(c.pubkey.clone()) == pubkey {
+                Some(name.clone())
+            } else {
+                None
+            }
+        })
+        .clone()
+        .ok_or_eyre("contact not found")?;
+
+    config.contact.remove(&name);
+
+    config.write()?;
+
+    Ok(())
+}

frost-client/src/group.rs

@@ -1,5 +1,7 @@
 use std::error::Error;
 
+use eyre::OptionExt;
+
 use crate::{args::Command, config::Config};
 
 pub(crate) fn list(args: &Command) -> Result<(), Box<dyn Error>> {
@@ -16,3 +18,18 @@ pub(crate) fn list(args: &Command) -> Result<(), Box<dyn Error>> {
 
     Ok(())
 }
+
+/// Remove a group from the user's config file.
+pub(crate) fn remove(args: &Command) -> Result<(), Box<dyn Error>> {
+    let Command::RemoveGroup { config, group } = (*args).clone() else {
+        panic!("invalid Command");
+    };
+
+    let mut config = Config::read(config)?;
+
+    config.group.remove(&group).ok_or_eyre("group not found")?;
+
+    config.write()?;
+
+    Ok(())
+}

frost-client/src/main.rs

@@ -24,7 +24,9 @@ async fn main() -> Result<(), Box<dyn Error>> {
         Command::Export { .. } => contact::export(&args.command),
         Command::Import { .. } => contact::import(&args.command),
         Command::Contacts { .. } => contact::list(&args.command),
+        Command::RemoveContact { .. } => contact::remove(&args.command),
         Command::Groups { .. } => group::list(&args.command),
+        Command::RemoveGroup { .. } => group::remove(&args.command),
         Command::TrustedDealer { .. } => trusted_dealer::trusted_dealer(&args.command),
         Command::Coordinator { .. } => crate::coordinator::run(&args.command).await,
         Command::Participant { .. } => crate::participant::run(&args.command).await,