tenebrous-dicebot/src/commands.rs

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Rust
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use crate::context::Context;
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use async_trait::async_trait;
use thiserror::Error;
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pub mod basic_rolling;
pub mod cofd;
pub mod cthulhu;
pub mod management;
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pub mod misc;
pub mod parser;
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pub mod variables;
#[derive(Error, Debug)]
pub enum CommandError {
#[error("invalid command: {0}")]
InvalidCommand(String),
#[error("ignored command")]
IgnoredCommand,
}
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pub struct Execution {
plain: String,
html: String,
}
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impl Execution {
pub fn plain(&self) -> &str {
&self.plain
}
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pub fn html(&self) -> &str {
&self.html
}
}
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#[async_trait]
pub trait Command: Send + Sync {
async fn execute(&self, ctx: &Context<'_>) -> Execution;
fn name(&self) -> &'static str;
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}
#[derive(Debug)]
pub struct CommandResult {
pub plain: String,
pub html: String,
}
/// Attempt to execute a command, and return the content that should
/// go back to Matrix, if the command was executed (successfully or
/// not). If a command is determined to be ignored, this function will
/// return None, signifying that we should not send a response.
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pub async fn execute_command(ctx: &Context<'_>) -> CommandResult {
let res = parser::parse_command(&ctx.message_body);
let (plain, html) = match res {
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Ok(cmd) => {
let execution = cmd.execute(ctx).await;
(execution.plain().into(), execution.html().into())
}
Err(e) => {
let message = format!("Error parsing command: {}", e);
let html_message = format!("<p><strong>{}</strong></p>", message);
(message, html_message)
}
};
let plain = format!("{}\n{}", ctx.username, plain);
let html = format!("<p>{}</p>\n{}", ctx.username, html);
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CommandResult {
plain: plain,
html: html,
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}
}
#[cfg(test)]
mod tests {
use super::*;
macro_rules! dummy_room {
() => {
crate::context::RoomContext {
id: &matrix_sdk::identifiers::room_id!("!fakeroomid:example.com"),
display_name: "displayname",
}
};
}
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#[tokio::test]
async fn unrecognized_command() {
let db = crate::db::Database::new_temp().unwrap();
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let ctx = Context {
db: db,
matrix_client: &matrix_sdk::Client::new("http://example.com").unwrap(),
room: dummy_room!(),
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username: "myusername",
message_body: "!notacommand",
};
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let result = execute_command(&ctx).await;
assert!(result.plain.contains("Error"));
}
}