mainbot.js

@@ -76,8 +76,16 @@ print(JSON.stringify(dialog.buttons))
 
 const config = {
     version: 1.1,
+    timezone: 3,
 }
 
+const notifications = [
+    // {
+    //     time: "18:14",
+    //     message: {literal: "show_projects"},
+    // },
+]
+
 // {config, dialog}
-const c = { config: config, dialog: dialog }
+const c = { config: config, dialog: dialog, notifications: notifications }
 c

src/bot_manager.rs

@@ -12,6 +12,7 @@ use teloxide::{
     dispatching::dialogue::serializer::Json,
     dptree,
     prelude::{Dispatcher, Requester},
+    types::{ChatId, UserId},
     Bot,
 };
 use tokio::runtime::Handle;
@@ -19,6 +20,7 @@ use tokio::runtime::Handle;
 use crate::{
     bot_handler::{script_handler, BotHandler},
     db::{bots::BotInstance, DbError, DB},
+    message_answerer::MessageAnswerer,
     mongodb_storage::MongodbStorage,
     BotController, BotError, BotResult, BotRuntime,
 };
@@ -26,9 +28,15 @@ use crate::{
 pub struct BotRunner {
     controller: BotController,
     info: BotInfo,
+    notificator: NotificatorThread,
     thread: Option<JoinHandle<BotResult<()>>>,
 }
 
+pub enum NotificatorThread {
+    Running(Option<JoinHandle<BotResult<()>>>),
+    Done,
+}
+
 #[derive(Clone)]
 pub struct BotInfo {
     pub name: String,
@@ -149,6 +157,8 @@ where
 
         let thread =
             spawn_bot_thread(controller.bot.clone(), controller.db.clone(), handler).await?;
+        let notificator = spawn_notificator_thread(controller.clone()).await?;
+        let notificator = NotificatorThread::Running(Some(notificator));
 
         let info = BotInfo {
             name: bi.name.clone(),
@@ -156,6 +166,7 @@ where
         let runner = BotRunner {
             controller,
             info: info.clone(),
+            notificator,
             thread: Some(thread),
         };
 
@@ -207,3 +218,40 @@ pub async fn spawn_bot_thread(
 
     Ok(thread)
 }
+
+pub async fn spawn_notificator_thread(
+    mut c: BotController,
+) -> BotResult<JoinHandle<BotResult<()>>> {
+    let thread = std::thread::spawn(move || -> BotResult<()> {
+        let rt = tokio::runtime::Runtime::new().unwrap();
+
+        rt.block_on(async {
+            loop {
+                let r = c.runtime.lock().unwrap();
+                let notifications = r.rc.get_nearest_notifications();
+                drop(r); // unlocking mutex
+
+                match notifications {
+                    Some(n) => {
+                        // waiting time to send notification
+                        tokio::time::sleep(n.wait_for()).await;
+                        'n: for n in n.notifications().into_iter() {
+                            for user in n.get_users(&c.db).await?.into_iter() {
+                                let text = match n.resolve_message(&c.db, &user).await? {
+                                    Some(text) => text,
+                                    None => continue 'n,
+                                };
+
+                                let ma = MessageAnswerer::new(&c.bot, &mut c.db, user.id);
+                                ma.answer_text(text.clone(), None).await?;
+                            }
+                        }
+                    }
+                    None => break Ok(()),
+                }
+            }
+        })
+    });
+
+    Ok(thread)
+}

src/botscript.rs

@@ -2,15 +2,17 @@ pub mod application;
 pub mod db;
 use std::collections::HashMap;
 use std::sync::{Arc, Mutex, PoisonError};
+use std::time::Duration;
 
 use crate::db::raw_calls::RawCallError;
-use crate::db::{CallDB, DbError, DB};
+use crate::db::{CallDB, DbError, User, DB};
 use crate::utils::parcelable::{ParcelType, Parcelable, ParcelableError, ParcelableResult};
+use chrono::{DateTime, Days, NaiveTime, ParseError, TimeDelta, Timelike, Utc};
 use db::attach_db_obj;
 use futures::future::join_all;
 use futures::lock::MutexGuard;
 use itertools::Itertools;
-use quickjs_rusty::serde::from_js;
+use quickjs_rusty::serde::{from_js, to_js};
 use quickjs_rusty::utils::create_empty_object;
 use quickjs_rusty::utils::create_string;
 use quickjs_rusty::ContextError;
@@ -269,6 +271,11 @@ fn print(s: String) {
 #[derive(Serialize, Deserialize, Debug, Clone)]
 pub struct BotConfig {
     version: f64,
+    /// relative to UTC, for e.g.,
+    /// timezone = 3 will be UTC+3,
+    /// timezone =-2 will be UTC-2,
+    #[serde(default)]
+    timezone: i8,
 }
 
 pub trait ResolveValue {
@@ -597,10 +604,256 @@ impl Parcelable<BotFunction> for BotDialog {
     }
 }
 
+#[derive(Serialize, Deserialize, Debug, Clone)]
+#[serde(untagged)]
+pub enum NotificationTime {
+    Delta {
+        #[serde(default)]
+        delta_hours: u32,
+        #[serde(default)]
+        delta_minutes: u32,
+    },
+    Specific(SpecificTime),
+}
+
+impl NotificationTime {
+    pub fn when_next(&self, start_time: &DateTime<Utc>, now: &DateTime<Utc>) -> DateTime<Utc> {
+        let now = *now;
+        match self {
+            NotificationTime::Delta {
+                delta_hours,
+                delta_minutes,
+            } => {
+                let delta = TimeDelta::minutes((delta_minutes + delta_hours * 60).into());
+
+                let mut estimation = *start_time;
+                // super non-optimal, but fun :)
+                loop {
+                    if estimation < now + Duration::from_secs(1) {
+                        estimation += delta;
+                    } else {
+                        break estimation;
+                    }
+                }
+            }
+            NotificationTime::Specific(time) => {
+                let estimation = now;
+                let estimation = estimation.with_hour(time.hour.into()).unwrap_or(estimation);
+                let mut estimation = estimation
+                    .with_minute(time.minutes.into())
+                    .unwrap_or(estimation);
+                // super non-optimal, but fun :)
+                loop {
+                    if estimation < now {
+                        estimation = estimation + Days::new(1);
+                    } else {
+                        break estimation;
+                    }
+                }
+            }
+        }
+    }
+}
+
+#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, Eq)]
+#[serde(try_from = "SpecificTimeFormat")]
+pub struct SpecificTime {
+    hour: u8,
+    minutes: u8,
+}
+
+impl SpecificTime {
+    pub fn new(hour: u8, minutes: u8) -> Self {
+        Self { hour, minutes }
+    }
+}
+
+#[derive(Serialize, Deserialize, Debug, Clone)]
+#[serde(untagged)]
+pub enum SpecificTimeFormat {
+    String(String),
+    Verbose { hour: u8, minutes: u8 },
+}
+
+impl TryFrom<SpecificTimeFormat> for SpecificTime {
+    type Error = ParseError;
+
+    fn try_from(stf: SpecificTimeFormat) -> Result<Self, Self::Error> {
+        match stf {
+            SpecificTimeFormat::Verbose { hour, minutes } => Ok(Self::new(hour, minutes)),
+            SpecificTimeFormat::String(timestring) => {
+                let time: NaiveTime = timestring.parse()?;
+
+                Ok(Self::new(time.hour() as u8, time.minute() as u8))
+            }
+        }
+    }
+}
+
+#[derive(Serialize, Deserialize, Default, Debug, Clone)]
+#[serde(untagged)]
+pub enum NotificationFilter {
+    #[default]
+    #[serde(rename = "all")]
+    All,
+    /// Send to randomly selected N people
+    Random { random: u32 },
+    /// Function that returns list of user id's who should get notification
+    BotFunction(BotFunction),
+}
+
+impl NotificationFilter {
+    pub async fn get_users(&self, db: &DB) -> ScriptResult<Vec<User>> {
+        match self {
+            NotificationFilter::All => Ok(db.get_users().await?),
+            NotificationFilter::Random { random } => Ok(db.get_random_users(*random).await?),
+            NotificationFilter::BotFunction(f) => {
+                let users = f.call()?;
+                let users = from_js(f.context().unwrap(), &users)?;
+                Ok(users)
+            }
+        }
+    }
+}
+
+impl Parcelable<BotFunction> for NotificationFilter {
+    fn get_field(&mut self, name: &str) -> ParcelableResult<ParcelType<BotFunction>> {
+        todo!()
+    }
+
+    fn resolve(&mut self) -> ParcelableResult<ParcelType<BotFunction>>
+    where
+        Self: Sized + 'static,
+    {
+        match self {
+            NotificationFilter::All => Ok(ParcelType::Other(())),
+            NotificationFilter::Random { .. } => Ok(ParcelType::Other(())),
+            NotificationFilter::BotFunction(f) => Ok(Parcelable::<_>::resolve(f)?),
+        }
+    }
+}
+
+#[derive(Serialize, Deserialize, Debug, Clone)]
+#[serde(untagged)]
+pub enum NotificationMessage {
+    Literal {
+        literal: String,
+    },
+    Text {
+        text: String,
+    },
+    /// Function can accept user which will be notified and then return generated message
+    BotFunction(BotFunction),
+}
+
+impl Parcelable<BotFunction> for NotificationMessage {
+    fn get_field(&mut self, name: &str) -> ParcelableResult<ParcelType<BotFunction>> {
+        todo!()
+    }
+
+    fn resolve(&mut self) -> ParcelableResult<ParcelType<BotFunction>>
+    where
+        Self: Sized + 'static,
+    {
+        match self {
+            NotificationMessage::Literal { .. } => Ok(ParcelType::Other(())),
+            NotificationMessage::Text { .. } => Ok(ParcelType::Other(())),
+            NotificationMessage::BotFunction(f) => Ok(f.resolve()?),
+        }
+    }
+}
+
+impl NotificationMessage {
+    pub async fn resolve(&self, db: &DB, user: &User) -> ScriptResult<Option<String>> {
+        match self {
+            NotificationMessage::Literal { literal } => Ok(db.get_literal_value(literal).await?),
+            NotificationMessage::Text { text } => Ok(Some(text.to_string())),
+            NotificationMessage::BotFunction(f) => {
+                let jsuser = to_js(f.context().expect("Function is not js"), user).unwrap();
+                let text = f.call_args(vec![jsuser])?;
+                let text = from_js(f.context().unwrap(), &text)?;
+                Ok(text)
+            }
+        }
+    }
+}
+
+#[derive(Serialize, Deserialize, Debug, Clone)]
+pub struct BotNotification {
+    time: NotificationTime,
+    #[serde(default)]
+    filter: NotificationFilter,
+    message: NotificationMessage,
+}
+
+impl Parcelable<BotFunction> for BotNotification {
+    fn get_field(&mut self, name: &str) -> ParcelableResult<ParcelType<BotFunction>> {
+        match name {
+            "filter" => Ok(Parcelable::<_>::resolve(&mut self.filter)?),
+            "message" => Ok(Parcelable::<BotFunction>::resolve(&mut self.message)?),
+            field => Err(ParcelableError::FieldError(format!(
+                "tried to get field {field}, but this field does not exists or private"
+            ))),
+        }
+    }
+}
+
+impl BotNotification {
+    pub fn left_time(&self, start_time: &DateTime<Utc>, now: &DateTime<Utc>) -> Duration {
+        let next = self.time.when_next(start_time, now);
+
+        // immidate notification if time to do it passed
+        let duration = (next - now).to_std().unwrap_or(Duration::from_secs(1));
+
+        // Rounding partitions of seconds
+        Duration::from_secs(duration.as_secs())
+    }
+
+    pub async fn get_users(&self, db: &DB) -> ScriptResult<Vec<User>> {
+        self.filter.get_users(db).await
+    }
+    pub async fn resolve_message(&self, db: &DB, user: &User) -> ScriptResult<Option<String>> {
+        self.message.resolve(db, user).await
+    }
+}
+
 #[derive(Serialize, Deserialize, Debug, Clone)]
 pub struct RunnerConfig {
     config: BotConfig,
     pub dialog: BotDialog,
+    #[serde(default)]
+    notifications: Vec<BotNotification>,
+    #[serde(skip)]
+    created_at: ConfigCreatedAt,
+}
+
+#[derive(Debug, Clone)]
+struct ConfigCreatedAt {
+    at: DateTime<Utc>,
+}
+
+impl Default for ConfigCreatedAt {
+    fn default() -> Self {
+        Self {
+            at: chrono::offset::Utc::now(),
+        }
+    }
+}
+
+#[derive(Debug, Clone)]
+pub struct NotificationBlock {
+    wait_for: Duration,
+    notifications: Vec<BotNotification>,
+}
+
+impl NotificationBlock {
+    pub fn wait_for(&self) -> Duration {
+        self.wait_for
+    }
+
+    pub fn notifications(&self) -> &[BotNotification] {
+        &self.notifications
+    }
 }
 
 impl RunnerConfig {
@@ -616,12 +869,49 @@ impl RunnerConfig {
 
         bm.map(|bm| bm.fill_literal(callback.to_string()))
     }
+
+    pub fn created_at(&self) -> DateTime<Utc> {
+        self.created_at.at + TimeDelta::try_hours(self.config.timezone.into()).unwrap()
+    }
+
+    /// if None is returned, then garanteed that later calls will also return None,
+    /// so, if you'll get None, no notifications will be provided later
+    pub fn get_nearest_notifications(&self) -> Option<NotificationBlock> {
+        let start_time = self.created_at();
+        let now =
+            chrono::offset::Utc::now() + TimeDelta::try_hours(self.config.timezone.into()).unwrap();
+
+        let ordered = self
+            .notifications
+            .iter()
+            .filter(|f| f.left_time(&start_time, &now) > Duration::from_secs(1))
+            .sorted_by_key(|f| f.left_time(&start_time, &now))
+            .collect::<Vec<_>>();
+
+        let left = match ordered.first() {
+            Some(notification) => notification.left_time(&start_time, &now),
+            // No notifications provided
+            None => return None,
+        };
+        // get all that should be sent at the same time
+        let notifications = ordered
+            .into_iter()
+            .filter(|n| n.left_time(&start_time, &now) == left)
+            .cloned()
+            .collect::<Vec<_>>();
+
+        Some(NotificationBlock {
+            wait_for: left,
+            notifications,
+        })
+    }
 }
 
 impl Parcelable<BotFunction> for RunnerConfig {
     fn get_field(&mut self, name: &str) -> Result<ParcelType<BotFunction>, ParcelableError> {
         match name {
             "dialog" => Ok(ParcelType::Parcelable(&mut self.dialog)),
+            "notifications" => Ok(ParcelType::Parcelable(&mut self.notifications)),
             field => Err(ParcelableError::FieldError(format!(
                 "tried to get field {field}, but this field does not exists or private"
             ))),
@@ -707,6 +997,7 @@ impl Runner {
 #[allow(clippy::print_stdout)]
 mod tests {
     use quickjs_rusty::{serde::from_js, OwnedJsObject};
+    use serde_json::json;
 
     use super::*;
 
@@ -785,4 +1076,59 @@ mod tests {
             panic!("test returned an error, but the wrong one, {errstr}")
         }
     }
+
+    #[test]
+    fn test_notification_struct() {
+        let botn = json!({
+            "time": "18:00",
+            "filter": {"random": 2},
+            "message": {"text": "some"},
+        });
+        let n: BotNotification = serde_json::from_value(botn).unwrap();
+        println!("BotNotification: {n:#?}");
+        assert!(matches!(n.time, NotificationTime::Specific(..)));
+        let time = if let NotificationTime::Specific(st) = n.time {
+            st
+        } else {
+            unreachable!()
+        };
+        assert_eq!(
+            time,
+            SpecificTime {
+                hour: 18,
+                minutes: 00
+            }
+        );
+    }
+
+    #[test]
+    fn test_notification_time() {
+        let botn = json!({
+            "time": "18:00",
+            "filter": {"random": 2},
+            "message": {"text": "some"},
+        });
+        let n: BotNotification = serde_json::from_value(botn).unwrap();
+        println!("BotNotification: {n:#?}");
+        let start_time = chrono::offset::Utc::now();
+        // let start_time = chrono::offset::Utc::now() + TimeDelta::try_hours(5).unwrap();
+        let start_time = start_time.with_hour(13).unwrap().with_minute(23).unwrap();
+        let left = n.left_time(&start_time, &start_time);
+        let secs = left.as_secs();
+        let minutes = secs / 60;
+        let hours = minutes / 60;
+        let minutes = minutes % 60;
+        println!("Left: {hours}:{minutes}");
+
+        let when_should = chrono::offset::Utc::now()
+            .with_hour(18)
+            .unwrap()
+            .with_minute(00)
+            .unwrap();
+
+        let should_left = (when_should - start_time).to_std().unwrap();
+        let should_left = Duration::from_secs(should_left.as_secs());
+
+        assert_eq!(left, should_left)
+    }
 }

src/db/mod.rs

@@ -11,6 +11,7 @@ use chrono::{DateTime, Utc};
 use enum_stringify::EnumStringify;
 use futures::stream::TryStreamExt;
 
+use futures::StreamExt;
 use mongodb::options::IndexOptions;
 use mongodb::{bson::doc, options::ClientOptions, Client};
 use mongodb::{Collection, Database, IndexModel};
@@ -212,6 +213,10 @@ impl CallDB for DB {
     async fn get_database(&mut self) -> Database {
         self.client.database(&self.name)
     }
+
+    async fn get_database_immut(&self) -> Database {
+        self.client.database(&self.name)
+    }
 }
 
 impl<T: CallDB> GetCollection for T {
@@ -226,6 +231,8 @@ impl<T: CallDB> GetCollection for T {
 pub enum DbError {
     #[error("error while processing mongodb query: {0}")]
     MongodbError(#[from] mongodb::error::Error),
+    #[error("error while coverting values: {0}")]
+    SerdeJsonError(#[from] serde_json::error::Error),
 }
 pub type DbResult<T> = Result<T, DbError>;
 
@@ -233,14 +240,35 @@ pub type DbResult<T> = Result<T, DbError>;
 pub trait CallDB {
     //type C;
     async fn get_database(&mut self) -> Database;
+    async fn get_database_immut(&self) -> Database;
     //async fn get_pool(&mut self) -> PooledConnection<'_, AsyncDieselConnectionManager<C>>;
-    async fn get_users(&mut self) -> DbResult<Vec<User>> {
-        let db = self.get_database().await;
+    async fn get_users(&self) -> DbResult<Vec<User>> {
+        let db = self.get_database_immut().await;
         let users = db.collection::<User>("users");
 
         Ok(users.find(doc! {}).await?.try_collect().await?)
     }
 
+    async fn get_random_users(&self, n: u32) -> DbResult<Vec<User>> {
+        let db = self.get_database_immut().await;
+        let users = db.collection::<User>("users");
+
+        let random_users: Vec<bson::Document> = users
+            .aggregate(vec![doc! {"$sample": {"size": n}}])
+            .await?
+            .try_collect()
+            .await?;
+        let random_users = random_users
+            .into_iter()
+            .map(|d| match serde_json::to_value(d) {
+                Ok(value) => serde_json::from_value::<User>(value),
+                Err(err) => Err(err),
+            })
+            .collect::<Result<_, _>>()?;
+
+        Ok(random_users)
+    }
+
     async fn set_admin(&mut self, userid: i64, isadmin: bool) -> DbResult<()> {
         let db = self.get_database().await;
         let users = db.collection::<User>("users");
@@ -350,8 +378,8 @@ pub trait CallDB {
         Ok(())
     }
 
-    async fn get_literal(&mut self, literal: &str) -> DbResult<Option<Literal>> {
-        let db = self.get_database().await;
+    async fn get_literal(&self, literal: &str) -> DbResult<Option<Literal>> {
+        let db = self.get_database_immut().await;
         let messages = db.collection::<Literal>("literals");
 
         let literal = messages.find_one(doc! { "token": literal }).await?;
@@ -359,7 +387,7 @@ pub trait CallDB {
         Ok(literal)
     }
 
-    async fn get_literal_value(&mut self, literal: &str) -> DbResult<Option<String>> {
+    async fn get_literal_value(&self, literal: &str) -> DbResult<Option<String>> {
         let literal = self.get_literal(literal).await?;
 
         Ok(literal.map(|l| l.value))

src/db/tests/mod.rs

@@ -174,3 +174,11 @@ async fn test_drop_media_except() {
 
     let _ = db.drop_media(literal).await.unwrap();
 }
+
+#[tokio::test]
+async fn test_get_random_users() {
+    let mut db = setup_db().await;
+
+    let users = db.get_random_users(1).await.unwrap();
+    assert_eq!(users.len(), 1);
+}

src/message_answerer.rs

@@ -86,6 +86,14 @@ impl<'a> MessageAnswerer<'a> {
         self.answer_inner(text, literal, variant, keyboard).await
     }
 
+    pub async fn answer_text(
+        self,
+        text: String,
+        keyboard: Option<InlineKeyboardMarkup>,
+    ) -> BotResult<(i64, i32)> {
+        self.send_message(text, keyboard).await
+    }
+
     async fn answer_inner(
         mut self,
         text: String,

src/utils.rs

@@ -50,7 +50,7 @@ pub async fn create_callback_button<C, D>(
 ) -> BotResult<InlineKeyboardButton>
 where
     C: Serialize + for<'a> Deserialize<'a> + Send + Sync,
-    D: CallDB + Send,
+    D: CallDB + Send + Sync,
 {
     let text = db
         .get_literal_value(literal)