exteded interactive shell

backend/src/main_db.rs

@@ -1,4 +1,4 @@
-use sqlx::{migrate::MigrateDatabase, FromRow, Row, Sqlite, SqlitePool};
+use sqlx::{migrate::MigrateDatabase, Sqlite, SqlitePool};
 use std::io;
 
 const DB_URL: &str = "sqlite://db/test.db";
@@ -36,7 +36,7 @@ async fn main() {
             0 => create_db().await,
             1 => init_db(),
             2 => db = connect_db().await,
-            3 => db = execute_sql(db).await,
+            3 => execute_sql(&db).await,
             _ => println!("This Command does not exists")
         }
         println!("");
@@ -67,22 +67,101 @@ async fn create_db() {
 }
 
 fn init_db() {
+    // TODO
     println!("databases baby!");
 }
 
 async fn connect_db() -> Option<SqlitePool>{
 
-    return Some(
-        SqlitePool::connect(DB_URL).await.unwrap()
-    );
+    let db = Some(SqlitePool::connect(DB_URL).await.unwrap());
+    println!("Connected to DB.");
+    return db;
 }
 
-async fn execute_sql(db: Option<SqlitePool>) -> Option<SqlitePool> {
+async fn execute_sql(opt_db: &Option<SqlitePool>) {
 
-    match db {
-        None => println!("WTF?!"),
-        _ => println!("uh yeah sql."),
+    if opt_db.is_none() {
+        println!("There is no active connection to the db.");
     }
+    let db = opt_db.clone().unwrap();
 
-    return db;
+    loop {
+        let mut choice = String::new();
+
+        println!("0: freely\n1: insert\n2: query\n3: delete");
+        io::stdin()
+            .read_line(&mut choice)
+            .expect("Failed to read line");
+
+        let choice: u32 = choice
+                            .trim()
+                            .parse()
+                            .expect("Please type a number!");
+
+        match choice {
+            0 => freely(&db).await,
+            1 => insert(&db).await,
+            2 => query(&db).await,
+            3 => delete(&db).await,
+            _ => {
+                println!("This Command does not exists");
+                return;
+            }
+        }
+    }
+}
+
+async fn freely(db: &SqlitePool) {
+    freely_with_praefix(db, "").await;
+}
+
+async fn insert(db : &SqlitePool) {
+    let str = "INSERT INTO ";
+    freely_with_praefix(db, str).await;
+}
+
+async fn query(db : &SqlitePool) {
+    let str = "SELECT ";
+
+    let mut sql = String::new();
+
+    println!("{}", str);
+
+    io::stdin()
+            .read_line(&mut sql)
+            .expect("Failed to read line");
+
+    sql = str.to_owned() + &sql;
+
+    let data = sqlx::query(&sql)
+        .fetch_all(db)
+        .await
+        .unwrap();
+
+    // somehow print the information 
+}
+
+async fn delete(db : &SqlitePool) {
+    let str = "DELETE FROM ";
+    freely_with_praefix(db, str).await;
+}
+
+async fn freely_with_praefix(db : &SqlitePool, str: &str) {
+
+    let mut sql = String::new();
+
+    println!("{}", str);
+
+    io::stdin()
+            .read_line(&mut sql)
+            .expect("Failed to read line");
+
+    sql = str.to_owned() + &sql;
+
+    let result = sqlx::query(&sql)
+        .execute(db)
+        .await
+        .unwrap();
+
+    println!("result: {:?}", result);
 }