Add connection to the database

src/helpers/database.rs

@@ -0,0 +1,28 @@
+use std::error::Error;
+use std::sync::{Mutex, Arc};
+use crate::data::config::DatabaseConfig;
+use mysql::Pool;
+
+/// Database access helper
+///
+/// @author Pierre Hubert
+
+// Pool shared across threads
+static mut POOL: Option<Arc<Mutex<mysql::Pool>>> = None;
+
+/// Connect to the database
+pub fn connect(conf: &DatabaseConfig) -> Result<(), Box<dyn Error>> {
+    let url = format!(
+        "mysql://{}:{}@{}:3306/{}",
+        conf.username, conf.password, conf.host, conf.name
+    );
+
+    let pool = Pool::new(url)?;
+    let pool = Some(Arc::new(Mutex::new(pool)));
+
+    unsafe {
+        POOL = pool;
+    }
+
+    Ok(())
+}

src/helpers/mod.rs

@@ -0,0 +1 @@
+pub mod database;