goldenpay 0.3.0

Production-oriented Rust SDK for FunPay automation
Documentation 
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use crate::client::GoldenPaySession;
use crate::error::GoldenPayError;
use crate::event::{BotOptions, EventStream, MessageFilter};
use crate::models::{BotState, ChatMessage, OrderInfo};
use crate::storage::{JsonStateStore, MemoryStateStore, StateStore};
use std::sync::Arc;

#[derive(Debug, Clone)]
pub enum GoldenPayEvent {
    NewOrder(OrderInfo),
    NewMessage(ChatMessage),
}

pub struct GoldenPayBot {
    session: GoldenPaySession,
    store: Arc<dyn StateStore>,
    stream: EventStream,
    options: BotOptions,
}

impl GoldenPayBot {
    pub fn new(session: GoldenPaySession) -> Self {
        let store: Arc<dyn StateStore> = if let Some(path) = session.config().state_path.clone() {
            Arc::new(JsonStateStore::new(path))
        } else {
            Arc::new(MemoryStateStore::new())
        };

        Self {
            session,
            store,
            stream: EventStream::default(),
            options: BotOptions::default(),
        }
    }

    pub fn with_store(session: GoldenPaySession, store: Arc<dyn StateStore>) -> Self {
        Self {
            session,
            store,
            stream: EventStream::default(),
            options: BotOptions::default(),
        }
    }

    pub fn with_options(mut self, options: BotOptions) -> Self {
        self.options = options;
        self
    }

    pub fn session(&self) -> &GoldenPaySession {
        &self.session
    }

    pub async fn load_state(&mut self) -> Result<(), GoldenPayError> {
        let state = self.store.load().await?;
        self.stream.seen_orders = state.seen_orders.into_iter().collect();
        self.stream.seen_messages = state.seen_messages;
        Ok(())
    }

    pub async fn save_state(&self) -> Result<(), GoldenPayError> {
        self.store
            .save(&BotState {
                seen_orders: self.stream.seen_orders.iter().cloned().collect(),
                seen_messages: self.stream.seen_messages.clone(),
            })
            .await
    }

    pub async fn bootstrap(&mut self) -> Result<(), GoldenPayError> {
        let orders = self.session.fetch_orders().await?;
        for order in orders {
            let chat_id = order.chat_id.clone();
            self.stream.seen_orders.insert(order.id);

            let mut last_message_id = 0;
            for message in self.session.fetch_chat_messages(&chat_id).await? {
                last_message_id = last_message_id.max(message.id);
            }

            if last_message_id > 0 {
                self.stream.seen_messages.insert(chat_id, last_message_id);
            }
        }

        self.save_state().await
    }

    pub async fn poll_once(&mut self) -> Result<Vec<GoldenPayEvent>, GoldenPayError> {
        let orders = self.session.fetch_orders().await?;
        let mut events = Vec::new();
        let filter = MessageFilter {
            ignore_author_id: self
                .options
                .ignore_own_messages
                .then_some(self.session.user().id),
        };

        for order in orders {
            let chat_id = order.chat_id.clone();
            let is_new_order = self.stream.should_emit_order(&order);

            if is_new_order {
                events.push(GoldenPayEvent::NewOrder(order.clone()));
            }

            let should_emit_messages = self.options.emit_messages_for_new_orders || !is_new_order;
            let messages = self.session.fetch_chat_messages(&chat_id).await?;

            if should_emit_messages {
                for message in messages {
                    if self.stream.should_emit_message(&message, &filter) {
                        events.push(GoldenPayEvent::NewMessage(message));
                    }
                }
            } else {
                let last_seen = messages.iter().map(|m| m.id).max().unwrap_or_default();
                if last_seen > 0 {
                    self.stream.seen_messages.insert(chat_id, last_seen);
                }
            }
        }

        self.save_state().await?;
        Ok(events)
    }

    pub async fn run<F, Fut>(&mut self, mut handler: F) -> Result<(), GoldenPayError>
    where
        F: FnMut(GoldenPayEvent, &GoldenPaySession) -> Fut,
        Fut: std::future::Future<Output = Result<(), GoldenPayError>>,
    {
        loop {
            for event in self.poll_once().await? {
                handler(event, &self.session).await?;
            }

            tokio::time::sleep(self.session.poll_interval()).await;
        }
    }
}