descord 0.1.11

A minimal discord api wrapper.
Documentation 
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use super::*;

pub(crate) type AutoCompleteFn =
    fn(
        String,
    ) -> std::pin::Pin<Box<dyn futures_util::Future<Output = Vec<String>> + Send + 'static>>;

pub type SlashHandlerFn = fn(
    Interaction,
    Vec<Value>,
) -> std::pin::Pin<
    Box<dyn futures_util::Future<Output = DescordResult> + Send + 'static>,
>;

#[derive(Debug, Clone)]
pub struct SlashCommand {
    pub name: String,
    pub description: String,
    pub fn_sig: Vec<ParamType>,
    pub handler_fn: SlashHandlerFn,
    pub fn_param_names: Vec<String>,
    pub fn_param_descriptions: Vec<String>,
    pub optional_params: Vec<bool>,
    pub permissions: Vec<String>,
    pub fn_param_renames: Vec<Option<String>>,
    pub fn_param_autocomplete: Vec<Option<AutoCompleteFn>>,
}

impl SlashCommand {
    pub async fn call(&self, data: Interaction) -> DescordResult {
        let split: Vec<String> = data
            .clone()
            .data
            .unwrap_or(InteractionData::default())
            .options
            .unwrap_or_default()
            .iter()
            .map(|i| i.value.clone())
            .collect();
        let mut args: Vec<Value> = Vec::with_capacity(self.fn_sig.len());

        let mut idx = 0;
        while idx < self.fn_sig.len() {
            let ty = &self.fn_sig[idx];
            let optional = self.optional_params[idx];
            if idx < split.len() {
                match ty {
                    ParamType::String => args.push(if optional {
                        Value::StringOption(Some(split[idx].to_owned()))
                    } else {
                        Value::String(split[idx].to_owned())
                    }),
                    ParamType::Int => args.push(if optional {
                        Value::IntOption(Some(split[idx].parse::<isize>().unwrap()))
                    } else {
                        Value::Int(split[idx].parse::<isize>().unwrap())
                    }),
                    ParamType::Bool => args.push(if optional {
                        Value::BoolOption(Some(split[idx].parse::<bool>().unwrap()))
                    } else {
                        Value::Bool(split[idx].parse::<bool>().unwrap())
                    }),
                    ParamType::Channel => {
                        let channel_id_str = &split[idx];
                        let channel_id =
                            if channel_id_str.starts_with("<#") && channel_id_str.ends_with(">") {
                                &channel_id_str[2..channel_id_str.len() - 1]
                            } else {
                                channel_id_str
                            };
                        match fetch_channel(channel_id).await {
                            Ok(channel) => args.push(if optional {
                                Value::ChannelOption(Some(channel))
                            } else {
                                Value::Channel(channel)
                            }),
                            Err(e) => {
                                log::error!("{:?}", e);
                                if !optional {
                                    panic!("Channel not found")
                                }
                            }
                        }
                    }
                    ParamType::User => {
                        let user_id_str = &split[idx];
                        let user_id = if user_id_str.starts_with("<@") && user_id_str.ends_with(">")
                        {
                            &user_id_str[2..user_id_str.len() - 1]
                        } else {
                            user_id_str
                        };
                        match fetch_user(user_id).await {
                            Ok(user) => args.push(if optional {
                                Value::UserOption(Some(user))
                            } else {
                                Value::User(user)
                            }),
                            Err(e) => {
                                log::error!("{:?}", e);
                                if !optional {
                                    panic!("User not found")
                                }
                            }
                        }
                    }
                    _ => {}
                }
            } else if optional {
                match ty {
                    ParamType::String => args.push(Value::StringOption(None)),
                    ParamType::Int => args.push(Value::IntOption(None)),
                    ParamType::Bool => args.push(Value::BoolOption(None)),
                    ParamType::Channel => args.push(Value::ChannelOption(None)),
                    ParamType::User => args.push(Value::UserOption(None)),
                    _ => {}
                }
            } else {
                return Err(Box::new(DescordError::MissingRequiredArgument(
                    self.name.clone(),
                )));
            }

            idx += 1;
        }

        let fut = ((self.handler_fn)(data, args));
        let boxed_fut: std::pin::Pin<
            Box<dyn std::future::Future<Output = DescordResult> + Send + 'static>,
        > = Box::pin(fut);

        boxed_fut.await?;
        Ok(())
    }
}