feat: starting db abstractions

migrations/2023-05-15-142901_create_users/up.sql

@@ -1,7 +1,11 @@
 -- Your SQL goes here
 CREATE TABLE users (
-    discord_id UNSIGNED BIG INT PRIMARY KEY NOT NULL,
+    id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,
+    discord_id UNSIGNED BIG INT NOT NULL,
+    guild_id UNSIGNED BIG INT NOT NULL,
     email TEXT UNIQUE NOT NULL,
     first_name TEXT NOT NULL,
-    last_name TEXT NOT NULL
+    last_name TEXT NOT NULL,
+
+    UNIQUE(discord_id, guild_id)
 );

src/commands/users.rs

@@ -1,5 +1,6 @@
-use crate::db::users::{user_all, user_insert, User};
+use crate::db::users::{User, NewUser};
 use crate::{Context, Error};
+use diesel::RunQueryDsl;
 
 #[poise::command(prefix_command, slash_command)]
 pub async fn register(
@@ -8,16 +9,21 @@ pub async fn register(
     last_name: String,
     email: String,
 ) -> Result<(), Error> {
-    let user = User {
-        discord_id: ctx.author().id.0 as i64,
-        first_name,
-        last_name,
-        email,
-    };
+    if let Some(guild_id) = ctx.guild_id() {
+        let new_user = NewUser {
+            discord_id: ctx.author().id.0 as i64,
+            guild_id: guild_id.into(),
+            first_name,
+            last_name,
+            email,
+        };
 
-    {
-        let mut conn = ctx.data().pool.get()?;
-        user_insert(&mut conn, &user);
+        {
+            let mut conn = ctx.data().pool.get()?;
+            new_user.insert(&mut conn);
+        }
+    } else {
+        ctx.say("You have to send this message from a guild.").await?;
     }
 
     Ok(())
@@ -25,21 +31,25 @@ pub async fn register(
 
 #[poise::command(prefix_command, slash_command)]
 pub async fn registered(ctx: Context<'_>) -> Result<(), Error> {
-    let users = {
-        let mut conn = ctx.data().pool.get()?;
-        user_all(&mut conn)
-    };
+    if let Some(guild_id) = ctx.guild_id() {
+        let users = {
+            let mut conn = ctx.data().pool.get()?;
+            User::by_guild_id(guild_id.into()).load(&mut conn)?
+        };
 
-    ctx.send(|f| {
-        f.embed(|e| {
-            e.description("Registered users").fields(
-                users
-                    .into_iter()
-                    .map(|u| (format!("{} {}", u.first_name, u.last_name), u.email, false)),
-            )
+        ctx.send(|f| {
+            f.embed(|e| {
+                e.description("Registered users").fields(
+                    users
+                        .into_iter()
+                        .map(|u| (format!("{} {}", u.first_name, u.last_name), u.email, false)),
+                )
+            })
         })
-    })
-    .await?;
+        .await?;
+    } else {
+        ctx.say("You are not in a guild.").await?;
+    }
 
     Ok(())
 }

src/db/mod.rs

@@ -1,2 +1,23 @@
 mod schema;
 pub mod users;
+
+use diesel::sqlite::SqliteConnection;
+use diesel::connection::SimpleConnection;
+use diesel::QueryResult;
+use diesel::r2d2::{ConnectionManager, Pool};
+
+fn initialize_db(conn: &mut SqliteConnection) -> QueryResult<()> {
+    // Enable WAL mode and enforce foreign keys
+    conn.batch_execute("PRAGMA journal_mode = WAL; PRAGMA synchronous = NORMAL; PRAGMA foreign_keys = ON;")
+}
+
+pub fn initialize_pool(url: &str) -> Pool<ConnectionManager<SqliteConnection>> {
+    let manager = ConnectionManager::new(url);
+
+    let pool = Pool::builder().test_on_check_out(true).build(manager).expect("oops");
+
+    let mut conn = pool.get().unwrap();
+    initialize_db(&mut conn).unwrap();
+
+    pool
+}

src/db/schema.rs

@@ -1,8 +1,10 @@
 // @generated automatically by Diesel CLI.
 
 diesel::table! {
-    users (discord_id) {
+    users (id) {
+        id -> Integer,
         discord_id -> BigInt,
+        guild_id -> BigInt,
         email -> Text,
         first_name -> Text,
         last_name -> Text,

src/db/users.rs

@@ -1,22 +1,68 @@
-use super::schema::users;
+use super::schema::users::{self, dsl::*};
 use diesel::prelude::*;
 use diesel::sqlite::SqliteConnection;
+use diesel::dsl::{AsSelect, Select};
+use diesel::sqlite::Sqlite;
+use diesel::dsl::Eq;
+use diesel::helper_types::Filter;
+use diesel::sql_types::BigInt;
+use diesel::expression::AsExpression;
 
-#[derive(Queryable, Insertable)]
+#[derive(Queryable, Selectable)]
+#[diesel(table_name = users)]
 pub struct User {
+    pub id: i32,
     pub discord_id: i64,
+    pub guild_id: i64,
     pub email: String,
     pub first_name: String,
     pub last_name: String,
 }
 
-pub fn user_insert(conn: &mut SqliteConnection, user: &User) -> User {
-    diesel::insert_into(users::table)
-        .values(user)
-        .get_result(conn)
-        .expect("fuck")
+#[derive(Insertable)]
+#[diesel(table_name = users)]
+pub struct NewUser {
+    pub discord_id: i64,
+    pub guild_id: i64,
+    pub email: String,
+    pub first_name: String,
+    pub last_name: String,
 }
 
-pub fn user_all(conn: &mut SqliteConnection) -> Vec<User> {
-    users::table.load::<User>(conn).expect("nou")
+type All = Select<users::table, AsSelect<User, Sqlite>>;
+type WithGuild<T> = Eq<guild_id, T>;
+type ByGuild<T> = Filter<All, WithGuild<T>>;
+
+impl User {
+    pub fn all() -> All {
+        users::table.select(User::as_select())
+    }
+
+    // pub fn by_guild<T>(guild_id_: T) -> ByGuild<T>
+    //     where T: AsExpression<BigInt>
+    //  {
+    //     Self::all().filter(guild_id.eq(guild_id_))
+    // }
+
+    pub fn by_guild_id(guild_id_: i64) -> ByGuild<i64>
+     {
+        Self::all().filter(guild_id.eq(guild_id_))
+    }
+ 
+    pub fn get(conn: &mut SqliteConnection, guild_id_: i64, discord_id_: i64) -> Result<User, diesel::result::Error> {
+        Self::all().filter(guild_id.eq(guild_id_)).filter(discord_id.eq(discord_id_)).first(conn)
+    }
+
+    pub fn get_by_id(conn: &mut SqliteConnection, id_: i32) -> Result<User, diesel::result::Error> {
+        Self::all().filter(id.eq(id_)).first(conn)
+    }
+}
+
+impl NewUser {
+    pub fn insert(&self, conn: &mut SqliteConnection) -> User {
+        diesel::insert_into(users::table)
+            .values(self)
+            .get_result(conn)
+            .expect("fuck")
+    }
 }

src/main.rs

@@ -2,9 +2,7 @@ mod commands;
 mod db;
 
 use affluences_api::AffluencesClient;
-use diesel::Connection;
 use poise::serenity_prelude as serenity;
-use std::sync::Mutex;
 use std::{env::var, time::Duration};
 use diesel::r2d2::{ConnectionManager, Pool};
 use diesel::sqlite::SqliteConnection;
@@ -36,12 +34,6 @@ async fn on_error(error: poise::FrameworkError<'_, Data, Error>) {
     }
 }
 
-fn db_connection_pool(url: &str) -> Pool<ConnectionManager<SqliteConnection>> {
-    let manager = ConnectionManager::new(url);
-
-    Pool::builder().test_on_check_out(true).build(manager).expect("oops")
-}
-
 #[tokio::main]
 async fn main() {
     // FrameworkOptions contains all of poise's configuration option in one struct
@@ -103,7 +95,7 @@ async fn main() {
                 poise::builtins::register_globally(ctx, &framework.options().commands).await?;
                 Ok(Data {
                     client: AffluencesClient::new(),
-                    pool: db_connection_pool("affy.db")
+                    pool: db::initialize_pool("affy.db")
                 })
             })
         })