Added pull command

src/main.rs

@@ -14,7 +14,7 @@ use rusqlite::{Connection, NO_PARAMS};
 group!({
     name: "general",
     options: {},
-    commands: [hello, add],
+    commands: [hello, add, pull],
 });
 
 use std::env;
@@ -37,23 +37,6 @@ struct Base {
 struct Handler;
 
 impl EventHandler for Handler {
-    // Set a handler for the `message` event - so that whenever a new message
-    // is received - the closure (or function) passed will be called.
-    //
-    // Event handlers are dispatched through a threadpool, and so multiple
-    // events can be dispatched simultaneously.
-    fn message(&self, ctx: Context, msg: Message) {
-        if msg.content == "!ping" {
-            // Sending a message can fail, due to a network error, an
-            // authentication error, or lack of permissions to post in the
-            // channel, so log to stdout when some error happens, with a
-            // description of it.
-            if let Err(why) = msg.channel_id.say(&ctx.http, "Pong!") {
-                println!("Error sending message: {:?}", why);
-            }
-        }
-    }
-
     // Set a handler to be called on the `ready` event. This is called when a
     // shard is booted, and a READY payload is sent by Discord. This payload
     // contains data like the current user's guild Ids, current user data,
@@ -65,6 +48,13 @@ impl EventHandler for Handler {
     }
 }
 
+fn make_base_from_args(num: usize) -> Base {
+    let args: Vec<_> = env::args().collect();
+    Base {
+        connection: Connection::open(&args[num]).expect("Failed to open database..."),
+    }
+}
+
 fn main() {
     // get token from args
     let args: Vec<_> = env::args().collect();
@@ -76,10 +66,7 @@ fn main() {
     if args[1] == "create" {
         println!("Creating table...\n\n");
         println!("Connecting to database");
-        let base_path = &args[2];
+        let base = make_base_from_args(2);
-        let base = Base {
-            connection: Connection::open(&base_path).expect("Failed to open in memory..."),
-        };
 
         base.connection.execute(
             "CREATE TABLE question (
@@ -130,11 +117,7 @@ fn add(ctx: &mut Context, msg: &Message) -> CommandResult {
         question: addition,
     };
 
-    let args: Vec<_> = env::args().collect();
+    let base = make_base_from_args(1);
-    let base_path = &args[1];
-    let base = Base {
-        connection: Connection::open(&base_path).expect("Failed to open database..."),
-    };
     println!("\tOpened connection");
 
     print!("\tExecuting insert...");
@@ -149,3 +132,23 @@ fn add(ctx: &mut Context, msg: &Message) -> CommandResult {
 
     Ok(())
 }
+
+#[command]
+fn pull(ctx: &mut Context, msg: &Message) -> CommandResult {
+    println!("Executing command PULL  as \"{}\"", msg.content);
+    
+    let base = make_base_from_args(1);
+    println!("\tOpened connection");
+    let mut stmt = base.connection
+        .prepare("SELECT id, question FROM question").expect("Failed to select from database");
+    let qs: Vec<_> = stmt
+        .query_map(NO_PARAMS, |row| Ok(Question {
+            id: row.get(0).expect("Failed to get row..."),
+            question: row.get(1).expect("Failed to get row..."),
+        })).expect("Failed to create a map").collect();
+    println!("\tSuccessfully created map");
+
+    msg.reply(ctx, format!("{:?}", &qs[qs.len() - 1]))?;
+    
+    Ok(())
+}