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use std::time::{SystemTime, UNIX_EPOCH, Duration};
use tracing::instrument;
use crate::types::chat::{ChatRoom, ChatMessage};
use super::Database;
impl Database {
#[instrument(skip(self))]
pub fn init_chat(&self) -> Result<(), rusqlite::Error> {
let sql = "
CREATE TABLE IF NOT EXISTS chat_rooms (
room_id INTEGER PRIMARY KEY AUTOINCREMENT,
name VARCHAR(255) NOT NULL
);
";
self.0.execute(sql, ())?;
let sql2 = "
CREATE TABLE IF NOT EXISTS chat_users (
room_id INTEGER NOT NULL,
user_id INTEGER NOT NULL,
FOREIGN KEY(room_id) REFERENCES chat_rooms(room_id),
FOREIGN KEY(user_id) REFERENCES users(user_id),
PRIMARY KEY (room_id, user_id)
);
";
self.0.execute(sql2, ())?;
let sql3 = "
CREATE TABLE IF NOT EXISTS chat_messages (
message_id INTEGER PRIMARY KEY AUTOINCREMENT,
user_id INTEGER NOT NULL,
room_id INTEGER NOT NULL,
date INTEGER NOT NULL,
content VARCHAR(500) NOT NULL,
FOREIGN KEY(user_id) REFERENCES users(user_id),
FOREIGN KEY(room_id) REFERENCES chat_rooms(room_id)
);
";
self.0.execute(sql3, ())?;
let sql4 = "CREATE INDEX IF NOT EXISTS chat_message_ids ON chat_messages(room_id);";
self.0.execute(sql4, ())?;
Ok(())
}
#[instrument(skip(self))]
pub fn get_rooms(&self, user_id: u64) -> Result<Vec<ChatRoom>, rusqlite::Error> {
tracing::trace!("Retrieving rooms");
let mut stmt = self.0.prepare(
"
SELECT * FROM chat_rooms
WHERE room_id IN (
SELECT room_id
FROM chat_users
WHERE user_id = ?
);
",
)?;
let row = stmt.query_map([user_id], |row| {
let room_id: u64 = row.get(0)?;
let name: String = row.get(1)?;
let mut stmt2 = self.0.prepare(
"
SELECT user_id FROM chat_users
WHERE room_id = ?;
"
)?;
let users = stmt2.query_map([room_id], |row2| {
Ok(row2.get(0)?)
})?.into_iter().flatten().collect();
let room = ChatRoom {
room_id,
users,
name
};
Ok(room)
})?;
Ok(row.into_iter().flatten().collect())
}
#[instrument(skip(self))]
pub fn create_room(&self, users: Vec<u64>, name: String) -> Result<ChatRoom, rusqlite::Error> {
tracing::trace!("Creating new room");
let mut stmt = self.0.prepare(
"INSERT INTO chat_rooms (name) VALUES (?) RETURNING *;"
)?;
let mut room = stmt.query_row([name], |row| {
let room_id = row.get(0)?;
let name = row.get(1)?;
Ok(ChatRoom {
room_id,
users: Vec::new(),
name
})
})?;
let mut stmt2 = self.0.prepare(
"INSERT INTO chat_users (room_id, user_id) VALUES (?, ?);"
)?;
for user_id in users {
stmt2.execute([room.room_id, user_id])?;
room.users.push(user_id);
}
Ok(room)
}
#[instrument(skip(self))]
pub fn add_user_to_room(&self, room_id: u64, user_id: u64) -> Result<bool, rusqlite::Error> {
tracing::trace!("Adding user to room");
let mut stmt = self.0.prepare(
"INSERT OR REPLACE INTO chat_users (room_id, user_id) VALUES(?,?);"
)?;
let changes = stmt.execute([room_id, user_id])?;
Ok(changes == 1)
}
#[instrument(skip(self))]
pub fn remove_user_from_room(&self, room_id: u64, user_id: u64) -> Result<bool, rusqlite::Error> {
tracing::trace!("Removing user from room");
let mut stmt = self.0.prepare(
"DELETE FROM chat_users WHERE room_id = ? AND user_id = ?;"
)?;
let changes = stmt.execute([room_id, user_id])?;
Ok(changes == 1)
}
#[instrument(skip(self))]
pub fn create_message(&self, room_id: u64, user_id: u64, content: String) -> Result<ChatMessage, rusqlite::Error> {
tracing::trace!("Creating new chat message");
let date = u64::try_from(
SystemTime::now()
.duration_since(UNIX_EPOCH)
.unwrap_or(Duration::ZERO)
.as_millis(),
)
.unwrap_or(0);
let mut stmt = self.0.prepare(
"INSERT INTO chat_messages (user_id, room_id, date, content) VALUES (?,?,?,?) RETURNING *;"
)?;
let msg = stmt.query_row((user_id, room_id, date, content), |row| {
let message_id = row.get(0)?;
let user_id = row.get(1)?;
let room_id = row.get(2)?;
let date = row.get(3)?;
let content = row.get(4)?;
Ok(ChatMessage {
message_id,
room_id,
user_id,
date,
content
})
})?;
Ok(msg)
}
#[instrument(skip(self))]
pub fn load_old_chat_messages(&self, room_id: u64, newest_message: u64, page: u64) -> Result<Vec<ChatMessage>, rusqlite::Error> {
tracing::trace!("Loading old chat messages");
let mut stmt = self.0.prepare(
"
SELECT * FROM chat_messages
WHERE room_id = ?
AND message_id < ?
ORDER BY message_id DESC
LIMIT ?
OFFSET ?
"
)?;
let messages = stmt.query_map((room_id, newest_message, 20, 20 * page), |row| {
let message_id = row.get(0)?;
let user_id = row.get(1)?;
let room_id = row.get(2)?;
let date = row.get(3)?;
let content = row.get(4)?;
Ok(ChatMessage {
message_id,
room_id,
user_id,
date,
content
})
})?;
Ok(messages.into_iter().flatten().collect())
}
}
|
