85 lines
1.9 KiB
Rust
85 lines
1.9 KiB
Rust
use async_trait::async_trait;
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use clap::Parser;
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use crate::api::Message;
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use crate::bot::command::{ClapCommand, Command, Context};
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use crate::conn;
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pub struct FullHelp {
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pub before: String,
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pub after: String,
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}
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pub trait HasDescriptions {
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fn descriptions(&self, ctx: &Context) -> Vec<String>;
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}
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impl FullHelp {
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pub fn new<S1: ToString, S2: ToString>(before: S1, after: S2) -> Self {
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Self {
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before: before.to_string(),
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after: after.to_string(),
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}
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}
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fn formulate_reply<B: HasDescriptions>(&self, ctx: &Context, bot: &B) -> String {
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let mut result = String::new();
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if !self.before.is_empty() {
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result.push_str(&self.before);
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result.push('\n');
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}
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for description in bot.descriptions(ctx) {
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result.push_str(&description);
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result.push('\n');
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}
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if !self.after.is_empty() {
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result.push_str(&self.after);
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result.push('\n');
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}
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result
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}
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}
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#[async_trait]
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impl<B, E> Command<B, E> for FullHelp
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where
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B: HasDescriptions + Send,
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E: From<conn::Error>,
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{
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async fn execute(&self, arg: &str, msg: &Message, ctx: &Context, bot: &mut B) -> Result<(), E> {
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if arg.trim().is_empty() {
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let reply = self.formulate_reply(ctx, bot);
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ctx.reply(msg.id, reply).await?;
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}
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Ok(())
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}
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}
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/// Show full bot help.
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#[derive(Parser)]
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pub struct Args {}
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#[async_trait]
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impl<B, E> ClapCommand<B, E> for FullHelp
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where
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B: HasDescriptions + Send,
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E: From<conn::Error>,
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{
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type Args = Args;
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async fn execute(
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&self,
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_args: Self::Args,
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msg: &Message,
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ctx: &Context,
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bot: &mut B,
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) -> Result<(), E> {
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let reply = self.formulate_reply(ctx, bot);
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ctx.reply(msg.id, reply).await?;
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Ok(())
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}
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}
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