Now it works (kinda)

sqlxtest/src/main.rs

@@ -1,33 +1,53 @@
+use sqlx::sqlite::Sqlite;
 use sqlx::sqlite::SqliteConnectOptions;
 use sqlx::sqlite::SqlitePoolOptions;
 use sqlx::Pool;
-// use std::env;
+use std::env;
 
 struct Label {
-    id: u32,
+    id: Option<u32>,
     description: String,
 }
 
-struct Repository<'s, T: sqlx::Database + sqlx::Executor<'s>> {
-    pool: Pool<T>,
+struct LabelRepository<'a> {
+    pool: &'a Pool<Sqlite>,
 }
 
-impl<'s, T: sqlx::Database + sqlx::Executor<'s>> Repository<'s, T> {
-    fn new(pool: Pool<T>) -> Self {
+impl<'a> LabelRepository<'a> {
+    fn new(pool: &'a Pool<Sqlite>) -> Self {
         Self { pool }
     }
 
     async fn save(&self, label: &Label) -> Result<(), sqlx::Error> {
         sqlx::query(r#"INSERT INTO testing (label) VALUES (?)"#)
-            .bind(label.description)
-            .execute(&self.pool)
+            .bind(&label.description)
+            .execute(self.pool)
             .await?;
         Ok(())
     }
+
+    async fn find_by_description(&self, label: &str) -> Result<Label, sqlx::Error> {
+        let result: (u32, String) =
+            sqlx::query_as(r#"SELECT id, label FROM testing WHERE label = ?"#)
+                .bind(label)
+                .fetch_one(self.pool)
+                .await?;
+        Ok(Label {
+            id: Some(result.0),
+            description: result.1,
+        })
     }
 
-#[tokio::main]
-async fn main() -> Result<(), sqlx::Error> {
+    async fn delete(&self, record: &Label) -> Result<(), sqlx::Error> {
+        sqlx::query(r#"DELETE FROM testing WHERE id = ?"#)
+            .bind(&record.id)
+            .execute(self.pool)
+            .await?;
+        Ok(())
+    }
+}
+
+async fn connect() -> Result<Pool<Sqlite>, sqlx::Error> {
     println!("Open database");
     let pool = SqlitePoolOptions::new()
         .connect_with(
@@ -37,21 +57,38 @@ async fn main() -> Result<(), sqlx::Error> {
         )
         .await?;
     sqlx::migrate!("db/migrations").run(&pool).await?;
+    Ok(pool)
+}
+
+#[tokio::main]
+async fn main() -> Result<(), sqlx::Error> {
+    let pool = connect().await?;
+    let repo = LabelRepository::new(&pool);
 
-    let repo = Repository::new(pool);
-
-    // let command = env::args().nth(1).unwrap();
-    // println!("Command: \"{}\"", command);
-    // if command == "add" {
-    //     let value = env::args().nth(2).unwrap();
-    //     println!("Should add \"{}\"", value);
-    // } else if command == "remove" {
-    //     let value = env::args().nth(2).unwrap();
-    //     println!("Should remove \"{}\"", value);
-    //     sqlx::query(r#"DELETE FROM testing WHERE label = ?"#)
-    //         .bind(value)
-    //         .execute(&pool)
-    //         .await?;
-    // }
+    let command = env::args()
+        .nth(1)
+        .expect("Need a command: \"add\" or \"remove\"");
+    let value = env::args()
+        .nth(2)
+        .expect("Besides the command, need a label to deal with");
+
+    println!("Command: \"{}\"", command);
+
+    if command == "add" {
+        println!("Should add \"{}\"", value);
+        let record = Label {
+            id: None,
+            description: value.into(),
+        };
+        repo.save(&record).await?;
+    } else if command == "remove" {
+        println!("Should remove \"{}\"", value);
+        if let Ok(record) = repo.find_by_description(&value).await {
+            repo.delete(&record).await?;
+            println!("Removed");
+        } else {
+            println!("Label does not exist");
+        }
+    }
     Ok(())
 }