add items

src/commands/gambling/mod.rs

@@ -4,10 +4,79 @@ pub mod give;
 pub mod wager;
 pub mod daily;
 pub mod leaderboard;
+pub mod shop;
 
-use crate::common::Error;
-use poise::serenity_prelude::UserId;
+use crate::{inventory::{self, Inventory}, common::{Context, Error}};
+use poise::serenity_prelude::{self as serenity, futures::StreamExt, UserId};
 use sqlx::{Row, PgExecutor};
+use std::collections::HashMap;
+
+#[derive(Clone)]
+pub enum Effect {
+    Multiplier(f64),
+    Chance(f64),
+}
+
+#[derive(Clone)]
+pub struct Item {
+    pub name: &'static str,
+    pub desc: &'static str,
+    pub effects: &'static [Effect],
+    pub id: u64,
+}
+
+impl Item {
+    pub fn inv_item(self) -> inventory::Item {
+        inventory::Item {
+            id: 0,
+            name: self.name.to_string(),
+            game: ID as i64,
+            item: self.id as i64,
+            data: serde_json::json!({}),
+        }
+    }
+}
+
+const ID: u64 = 440;
+
+mod items {
+    use super::{Item, Effect};
+
+    pub const DIRT: Item = Item {
+        name: "Pile of Dirt",
+        desc: "Returns a 1.01x multiplier on all earnings",
+        effects: &[Effect::Multiplier(1.01)],
+        id: id::DIRT,
+    };
+
+    pub const SAND: Item = Item {
+        name: "Pile of Sand",
+        desc: "Increase your odds of winning by 1%",
+        effects: &[Effect::Chance(0.51)],
+        id: id::SAND,
+    };
+
+    mod id {
+        pub const DIRT: u64 = 1;
+        pub const SAND: u64 = 2;
+    }
+
+    pub fn get_item_by_id(id: u64) -> Option<&'static Item> {
+        match id {
+            id::DIRT => Some(&DIRT),
+            id::SAND => Some(&SAND),
+            _ => None
+        }
+    }
+
+    pub fn get_item_by_name(name: &str) -> Option<&'static Item> {
+        match name {
+            "Pile of Dirt" => Some(&DIRT),
+            "Pile of Sand" => Some(&SAND),
+            _ => None
+        }
+    }
+}
 
 pub async fn get_balance<'a, E>(id: UserId, db: E) -> Result<i32, Error>
 where
@@ -37,3 +106,27 @@ where
 
     Ok(())
 }
+
+async fn autocomplete_inventory<'a>(
+    ctx: Context<'a>, 
+    partial: &'a str,
+) -> impl Iterator<Item = serenity::AutocompleteChoice> + use<'a> {
+    let db = &ctx.data().database;
+
+    let inventory = Inventory::new(ctx.author().id, Some(ID))
+        .items(db).await
+        .fold(HashMap::<i64, usize>::new(), |mut acc, item| async {
+            let item = item.unwrap();
+            let x = acc.get(&item.item);
+            acc.insert(item.item, x.map(|x| x + 1).unwrap_or(1));
+            acc
+        }).await;
+
+    inventory.into_iter()
+        .map(|(id, count)| (items::get_item_by_id(id as u64).unwrap(), count))
+        .filter(move |(item, _)| item.name.contains(partial))
+        .map(|(item, count)| serenity::AutocompleteChoice::new(
+            format!("{} - {} ({count}x)", item.desc, item.name),
+            item.name
+        ))
+}

src/commands/gambling/shop.rs

@@ -0,0 +1,81 @@
+use crate::common::{Context, Error};
+use crate::inventory::Inventory;
+use super::Item;
+use once_cell::sync::Lazy;
+use poise::serenity_prelude as serenity;
+use std::collections::HashMap;
+
+static ITEMS: Lazy<HashMap<&'static str, (i32, &Item)>> = Lazy::new(|| {
+    HashMap::from([
+        ("Pile of Dirt", (10, &super::items::DIRT)),
+        ("Pile of Sand", (10, &super::items::SAND)),
+    ])
+});
+
+async fn autocomplete_shop<'a>(
+    ctx: Context<'_>,
+    partial: &'a str,
+) -> impl Iterator<Item = serenity::AutocompleteChoice> + use<'a> {
+    let db = &ctx.data().database;
+    let balance = super::get_balance(ctx.author().id, db).await;
+
+    ITEMS.values()
+        .filter(move |(_, item)| item.name.contains(partial))
+        .map(move |(cost, item)| {            
+            let balance = balance.as_ref().unwrap_or(cost);
+
+            serenity::AutocompleteChoice::new(
+                if cost > balance {
+                    format!("{} ({cost} tokens) - {} - Can't Afford", item.name, item.desc)
+                } else {
+                    format!("{} ({cost} tokens) - {}", item.name, item.desc)
+                },
+                item.name
+            )
+        })
+}
+
+#[poise::command(slash_command, prefix_command)]
+pub async fn buy(ctx: Context<'_>,
+    #[autocomplete = "autocomplete_shop"]
+    item: String,
+    #[min = 1]
+    count: Option<i32>) -> Result<(), Error>
+{
+    let count = count.unwrap_or(1);
+
+    if count < 1 {
+        ctx.reply("Ok, did you REALLY expect me to fall for that for a third time? You've gotta find a new trick.").await?;
+        return Ok(());
+    }
+
+    let mut tx = ctx.data().database.begin().await?;
+
+    if let Some((price, &ref item)) = ITEMS.get(item.as_str()) {
+        let author = ctx.author();
+        let balance = super::get_balance(author.id, &mut *tx).await?;
+
+        let total = *price * count;
+
+        if total > balance {
+            ctx.reply(format!("You could not afford the items ({count}x **{}** cost(s) **{total}** tokens)", item.name)).await?;
+            return Ok(())
+        }
+
+        let inventory = Inventory::new(author.id, Some(super::ID));
+
+        for _ in 0..count {
+            inventory.give_item(&mut *tx, item.clone().inv_item()).await?;
+        }
+
+        let balance = super::get_balance(author.id, &mut *tx).await?;
+        super::change_balance(author.id, balance - total, &mut *tx).await?;
+
+        ctx.reply(format!("You have purchased {count}x {}.", item.name)).await?;
+        tx.commit().await?;
+    } else {
+        ctx.reply(format!("The item {item} is not available in this shop.")).await?;
+    }
+
+    Ok(())
+}

src/commands/gambling/wager.rs

@@ -1,10 +1,14 @@
-use crate::common::{Context, Error};
+use crate::{common::{Context, Error}, inventory::Inventory};
+use super::Effect;
+use rand::Rng;
 
 /// Put forward an amount of tokens to either lose or earn
 #[poise::command(slash_command, prefix_command)]
 pub async fn wager(
     ctx: Context<'_>,
-    amount: i32) -> Result<(), Error>
+    amount: i32,
+    #[autocomplete = "super::autocomplete_inventory"]
+    item: Option<String>) -> Result<(), Error>
 {
     // #[min = 1] does not appear to work with prefix commands
     if amount < 1 {
@@ -16,16 +20,50 @@ pub async fn wager(
 
     let mut wealth = super::get_balance(ctx.author().id, &mut *tx).await?;
 
+    let item = if let Some(item) = item {
+        let inventory = Inventory::new(ctx.author().id, Some(super::ID));
+
+        match super::items::get_item_by_name(&item) {
+            Some(item) => {
+                if let Some(item) = inventory.get_item_of_type(&mut *tx, item.id).await? {
+                    inventory.remove_item(&mut *tx, item.id).await?;
+                } else {
+                    ctx.reply(format!("You do not have a(n) {} to use.", item.name)).await?;
+                    return Ok(());
+                }
+
+                Some(item)
+            }
+            None => {
+                ctx.reply("item {item} does not exist.").await?;
+                return Ok(());
+            }
+        }
+    } else {
+        None
+    };
+
     if wealth < amount {
         ctx.reply(format!("You do not have enough tokens (**{}**) to wager this amount.",
                           wealth)).await?;
         return Ok(());
     }
 
-    if rand::random() {
-        wealth += amount;
+    let multiplier = item.clone().map(|item| item.effects.iter().fold(1.0, |acc, effect| match effect {
+        Effect::Multiplier(c) => *c,
+        _ => acc,
+    })).unwrap_or(1.0);
+
+    let chance = item.map(|item| item.effects.iter().fold(0.5, |acc, effect| match effect {
+        Effect::Chance(c) => *c,
+        _ => acc,
+    })).unwrap_or(0.5);
+
+    if rand::thread_rng().gen_bool(chance) {
+        let win = (amount as f64 * multiplier) as i32;
+        wealth += win;
         ctx.reply(format!("You just gained **{}** token(s)! You now have **{}**.",
-                          amount, wealth)).await?;
+                          win, wealth)).await?;
     } else {
         wealth -= amount;
         ctx.reply(format!("You've lost **{}** token(s), you now have **{}**.",

src/commands/mod.rs

@@ -1,4 +1,3 @@
-use crate::{Data, Error};
 use poise::Command;
 
 mod ping;
@@ -8,6 +7,8 @@ mod gambling;
 mod eval;
 mod self_roles;
 
+use crate::common::{Data, Error};
+
 pub fn commands() -> Vec<Command<Data, Error>> {
     vec![
         ping::ping(),
@@ -18,6 +19,7 @@ pub fn commands() -> Vec<Command<Data, Error>> {
         gambling::wager::wager(),
         gambling::daily::daily(),
         gambling::leaderboard::leaderboard(),
+        gambling::shop::buy(),
         eval::eval(),
         self_roles::role(),
     ]