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use bson::{to_bson, Document};
use futures::try_join;
use mongodb::options::FindOptions;
use onechatsocial_models::v0::MessageSort;
use onechatsocial_result::Result;
use crate::{AppendMessage, Message, MessageQuery, MessageTimePeriod, MongoDb, PartialMessage};
use super::AbstractMessages;
static COL: &str = "messages";
#[async_trait]
impl AbstractMessages for MongoDb {
/// Insert a new message into the database
async fn insert_message(&self, message: &Message) -> Result<()> {
query!(self, insert_one, COL, &message).map(|_| ())
}
/// Fetch a message by its id
async fn fetch_message(&self, id: &str) -> Result<Message> {
query!(self, find_one_by_id, COL, id)?.ok_or_else(|| create_error!(NotFound))
}
/// Fetch multiple messages by given query
async fn fetch_messages(&self, query: MessageQuery) -> Result<Vec<Message>> {
let mut filter = doc! {};
// 1. Apply message filters
if let Some(channel) = query.filter.channel {
filter.insert("channel", channel);
}
if let Some(author) = query.filter.author {
filter.insert("author", author);
}
let is_search_query = if let Some(query) = query.filter.query {
filter.insert(
"$text",
doc! {
"$search": query
},
);
true
} else {
false
};
// 2. Find query limit
let limit = query.limit.unwrap_or(50);
// 3. Apply message time period
match query.time_period {
MessageTimePeriod::Relative { nearby } => {
// 3.1. Prepare filters
let mut older_message_filter = filter.clone();
let mut newer_message_filter = filter;
older_message_filter.insert(
"_id",
doc! {
"$lt": &nearby
},
);
newer_message_filter.insert(
"_id",
doc! {
"$gte": &nearby
},
);
// 3.2. Execute in both directions
let (a, b) = try_join!(
self.find_with_options::<_, Message>(
COL,
newer_message_filter,
FindOptions::builder()
.limit(limit / 2 + 1)
.sort(doc! {
"_id": 1_i32
})
.build(),
),
self.find_with_options::<_, Message>(
COL,
older_message_filter,
FindOptions::builder()
.limit(limit / 2)
.sort(doc! {
"_id": -1_i32
})
.build(),
)
)
.map_err(|_| create_database_error!("find", COL))?;
Ok([a, b].concat())
}
MessageTimePeriod::Absolute {
before,
after,
sort,
} => {
// 3.1. Apply message ID filter
if let Some(doc) = match (before, after) {
(Some(before), Some(after)) => Some(doc! {
"$lt": before,
"$gt": after
}),
(Some(before), _) => Some(doc! {
"$lt": before
}),
(_, Some(after)) => Some(doc! {
"$gt": after
}),
_ => None,
} {
filter.insert("_id", doc);
}
// 3.2. Execute with given message sort
self.find_with_options(
COL,
filter,
FindOptions::builder()
.limit(limit)
.sort(match sort.unwrap_or(MessageSort::Latest) {
// Sort by relevance, fallback to latest
MessageSort::Relevance => {
if is_search_query {
doc! {
"score": {
"$meta": "textScore"
}
}
} else {
doc! {
"_id": -1_i32
}
}
}
// Sort by latest first
MessageSort::Latest => doc! {
"_id": -1_i32
},
// Sort by oldest first
MessageSort::Oldest => doc! {
"_id": 1_i32
},
})
.build(),
)
.await
.map_err(|_| create_database_error!("find", COL))
}
}
}
/// Update a given message with new information
async fn update_message(&self, id: &str, message: &PartialMessage) -> Result<()> {
query!(self, update_one_by_id, COL, id, message, vec![], None).map(|_| ())
}
/// Append information to a given message
async fn append_message(&self, id: &str, append: &AppendMessage) -> Result<()> {
let mut query = doc! {};
if let Some(embeds) = &append.embeds {
if !embeds.is_empty() {
query.insert(
"$push",
doc! {
"embeds": {
"$each": to_bson(embeds)
.map_err(|_| create_database_error!("to_bson", "embeds"))?
}
},
);
}
}
if query.is_empty() {
return Ok(());
}
self.col::<Document>(COL)
.update_one(
doc! {
"_id": id
},
query,
None,
)
.await
.map(|_| ())
.map_err(|_| create_database_error!("update_one", COL))
}
/// Add a new reaction to a message
async fn add_reaction(&self, id: &str, emoji: &str, user: &str) -> Result<()> {
self.col::<Document>(COL)
.update_one(
doc! {
"_id": id
},
doc! {
"$addToSet": {
format!("reactions.{emoji}"): user
}
},
None,
)
.await
.map(|_| ())
.map_err(|_| create_database_error!("update_one", COL))
}
/// Remove a reaction from a message
async fn remove_reaction(&self, id: &str, emoji: &str, user: &str) -> Result<()> {
self.col::<Document>(COL)
.update_one(
doc! {
"_id": id
},
doc! {
"$pull": {
format!("reactions.{emoji}"): user
}
},
None,
)
.await
.map(|_| ())
.map_err(|_| create_database_error!("update_one", COL))
}
/// Remove reaction from a message
async fn clear_reaction(&self, id: &str, emoji: &str) -> Result<()> {
self.col::<Document>(COL)
.update_one(
doc! {
"_id": id
},
doc! {
"$unset": {
format!("reactions.{emoji}"): 1
}
},
None,
)
.await
.map(|_| ())
.map_err(|_| create_database_error!("update_one", COL))
}
/// Delete a message from the database by its id
async fn delete_message(&self, id: &str) -> Result<()> {
query!(self, delete_one_by_id, COL, id).map(|_| ())
}
/// Delete messages from a channel by their ids and corresponding channel id
async fn delete_messages(&self, channel: &str, ids: &[String]) -> Result<()> {
self.col::<Document>(COL)
.delete_many(
doc! {
"channel": channel,
"_id": {
"$in": ids
}
},
None,
)
.await
.map(|_| ())
.map_err(|_| create_database_error!("delete_many", COL))
}
}