Create euphoxide-bot crate

euphoxide-bot/src/command/botrulez/full_help.rs

@@ -0,0 +1,110 @@
+use async_trait::async_trait;
+#[cfg(feature = "clap")]
+use clap::Parser;
+use euphoxide::api::Message;
+
+#[cfg(feature = "clap")]
+use crate::command::clap::ClapCommand;
+use crate::{
+    bot::Bot,
+    command::{Command, Context, Propagate},
+};
+
+#[derive(Default)]
+pub struct FullHelp {
+    pub before: String,
+    pub after: String,
+}
+
+impl FullHelp {
+    pub fn new() -> Self {
+        Self::default()
+    }
+
+    pub fn with_before(mut self, before: impl ToString) -> Self {
+        self.before = before.to_string();
+        self
+    }
+
+    pub fn with_after(mut self, after: impl ToString) -> Self {
+        self.after = after.to_string();
+        self
+    }
+
+    fn formulate_reply<S, E>(&self, ctx: &Context, bot: &Bot<S, E>) -> String {
+        let mut result = String::new();
+
+        if !self.before.is_empty() {
+            result.push_str(&self.before);
+            result.push('\n');
+        }
+
+        for info in bot.commands.infos(ctx) {
+            if let Some(trigger) = &info.trigger {
+                result.push_str(trigger);
+                if let Some(description) = &info.description {
+                    result.push_str(" - ");
+                    result.push_str(description);
+                }
+                result.push('\n');
+            }
+        }
+
+        if !self.after.is_empty() {
+            result.push_str(&self.after);
+            result.push('\n');
+        }
+
+        result
+    }
+}
+
+#[async_trait]
+impl<S, E> Command<S, E> for FullHelp
+where
+    S: Send + Sync,
+    E: From<euphoxide::Error>,
+{
+    async fn execute(
+        &self,
+        arg: &str,
+        msg: &Message,
+        ctx: &Context,
+        bot: &Bot<S, E>,
+    ) -> Result<Propagate, E> {
+        if arg.trim().is_empty() {
+            let reply = self.formulate_reply(ctx, bot);
+            ctx.reply_only(msg.id, reply).await?;
+            Ok(Propagate::No)
+        } else {
+            Ok(Propagate::Yes)
+        }
+    }
+}
+
+/// Show full bot help.
+#[cfg(feature = "clap")]
+#[derive(Parser)]
+pub struct FullHelpArgs {}
+
+#[cfg(feature = "clap")]
+#[async_trait]
+impl<S, E> ClapCommand<S, E> for FullHelp
+where
+    S: Send + Sync,
+    E: From<euphoxide::Error>,
+{
+    type Args = FullHelpArgs;
+
+    async fn execute(
+        &self,
+        _args: Self::Args,
+        msg: &Message,
+        ctx: &Context,
+        bot: &Bot<S, E>,
+    ) -> Result<Propagate, E> {
+        let reply = self.formulate_reply(ctx, bot);
+        ctx.reply_only(msg.id, reply).await?;
+        Ok(Propagate::No)
+    }
+}