add sqlite database and message editing support

src/bin/disbahn.rs

@@ -0,0 +1,30 @@
+use disbahn::database::Database;
+use disbahn::DisbahnClient;
+use serenity::http::Http;
+use std::env;
+use std::env::VarError;
+
+#[tokio::main]
+async fn main() -> anyhow::Result<()> {
+    dotenvy::dotenv()?;
+
+    env_logger::builder()
+        .filter_module(module_path!(), log::LevelFilter::Debug)
+        .init();
+
+    let database_url = match env::var("DATABASE_URL") {
+        Ok(url) => url,
+        Err(VarError::NotPresent) => "disbahn.db".to_string(),
+        Err(err) => return Err(err.into()),
+    };
+    let webhook_url = env::var("WEBHOOK_URL")?;
+    let feed_url = env::var("FEED_URL")?;
+
+    let database = Database::connect(&database_url)?;
+    let http = Http::new("");
+    let webhook = http.get_webhook_from_url(&webhook_url).await.unwrap();
+
+    let mut disbahn_client = DisbahnClient::new(database, webhook, http, feed_url);
+
+    disbahn_client.refresh().await
+}