use regex::Regex; use serenity::client::Context; use serenity::framework::standard::macros::command; use serenity::framework::standard::{Args, CommandResult}; use serenity::model::channel::Message; use crate::providers::qalc; static QALC_HELP: &[&str] = &["help", "--help", "-h", "h"]; #[command] #[description("Calculates an expression")] #[min_args(1)] #[usage("")] #[example("1 * 1 + 1 / sqrt(2)")] #[bucket("general")] async fn qalc(ctx: &Context, msg: &Message, args: Args) -> CommandResult { let expression = args.message(); lazy_static::lazy_static! { static ref ERROR_REGEX: Regex = Regex::new(r"^error:.*").unwrap(); } if QALC_HELP.contains(&expression) { msg.channel_id.send_message(ctx, |f| { f.embed(|e| e.title("Help").description("Read the [Qalculate! Manual](https://qalculate.github.io/manual/index.html)")) }).await?; } else { let result = qalc::qalc(expression).await?; let mut description = format!("`{}`", result); if ERROR_REGEX.is_match(&result) { description += "\nRead the [Qalculate! Manual](https://qalculate.github.io/manual/index.html)"; } if &result == "aborted\n" { description = "Calculation aborted after timeout. Try a less complex calculation.".to_string(); } msg.channel_id .send_message(ctx, |f| { f.embed(|e| { e.description(description) .footer(|f| f.text("Powered by qalculate!")) }) }) .await?; } Ok(()) }