selling items

src/ship/items/actions.rs

@@ -787,3 +787,48 @@ where
         Ok((transaction, result))
     }).await
 }
+
+
+fn sell_inventory_item<'a>(character_id: CharacterEntityId)
+                           -> impl Fn((ItemStateProxy<'a>, Box<dyn EntityGatewayTransaction + 'a>), InventoryItem)
+                                      -> Pin<Box<dyn Future<Output=Result<((ItemStateProxy<'a>, Box<dyn EntityGatewayTransaction + 'a>), InventoryItem), ItemStateError>> + Send + 'a>>
+{
+    move |(mut item_state, mut transaction), inventory_item| {
+        Box::pin(async move {
+            let mut inventory = item_state.inventory(&character_id)?;
+            let price = inventory_item.item.sell_price()?;
+            inventory.add_meseta_no_overflow(price)?;
+
+            let mut transaction = inventory_item.with_entity_id(transaction, |mut transaction, entity_id| {
+                async move {
+                    transaction.gateway().add_item_note(&entity_id, ItemNote::SoldToShop).await?;
+                    Ok(transaction)
+                }}).await?;
+            transaction.gateway().set_character_meseta(&character_id, inventory.meseta).await?;
+            item_state.set_inventory(inventory);
+            Ok(((item_state, transaction), inventory_item))
+        })
+    }
+}
+
+pub async fn sell_item<'a, EG> (
+    item_state: &'a mut ItemState,
+    entity_gateway: &mut EG,
+    character: &CharacterEntity,
+    item_id: ClientItemId,
+    amount: u32,
+) -> Result<InventoryItem, ItemStateError>
+where
+    EG: EntityGateway,
+{
+    entity_gateway.with_transaction(|transaction| async move {
+        let item_state_proxy = ItemStateProxy::new(item_state);
+        let ((item_state_proxy, transaction), result) = ItemStateAction::default()
+            .act(take_item_from_inventory(character.id, item_id, amount))
+            .act(sell_inventory_item(character.id))
+            .commit((item_state_proxy, transaction))
+            .await?;
+        item_state_proxy.commit();
+        Ok((transaction, result))
+    }).await
+}

src/ship/items/state.rs

@@ -9,9 +9,10 @@ use crate::ship::map::MapArea;
 use crate::ship::location::{AreaClient, RoomId};
 use crate::entity::character::{CharacterEntity, CharacterEntityId};
 use crate::entity::gateway::{EntityGateway, GatewayError};
-use crate::entity::item::tool::Tool;
+use crate::entity::item::tool::{Tool, ToolType};
 use crate::entity::item::mag::Mag;
 use crate::ship::drops::ItemDrop;
+use crate::ship::shops::{ShopItem, ArmorShopItem, ToolShopItem, WeaponShopItem};
 
 // TODO: Commit trait that ItemStateProxy and EntityTransaction implement that .commit requires and acts on upon everything succeeding (like 3 less lines of code!)
 
@@ -65,6 +66,9 @@ pub enum ItemStateError {
 
     #[error("item is not mag food {0}")]
     NotMagFood(ClientItemId),
+
+    #[error("item is not sellable")]
+    ItemNotSellable,
 }
 
 pub enum FloorType {
@@ -299,6 +303,64 @@ impl InventoryItemDetail {
             },
         }
     }
+
+    // TODO: this should probably go somewhere a bit more fundamental like ItemDetail
+    pub fn sell_price(&self) -> Result<u32, ItemStateError> {
+        match self {
+            InventoryItemDetail::Individual(individual_item) => {
+                match &individual_item.item {
+                    // TODO: can wrapped items be sold?
+                    ItemDetail::Weapon(w) => {
+                        if !w.tekked {
+                            return Ok(1u32)
+                        }
+                        if w.is_rare_item() {
+                            return Ok(10u32)
+                        }
+                        Ok((WeaponShopItem::from(w).price() / 8) as u32)
+                    },
+                    ItemDetail::Armor(a) => {
+                        if a.is_rare_item() {
+                            return Ok(10u32)
+                        }
+                        Ok((ArmorShopItem::from(a).price() / 8) as u32)
+                    },
+                    ItemDetail::Shield(s) => {
+                        if s.is_rare_item() {
+                            return Ok(10u32)
+                        }
+                        Ok((ArmorShopItem::from(s).price() / 8) as u32)
+                    },
+                    ItemDetail::Unit(u) => {
+                        if u.is_rare_item() {
+                            return Ok(10u32)
+                        }
+                        Ok((ArmorShopItem::from(u).price() / 8) as u32)
+                    },
+                    ItemDetail::Tool(t) => {
+                        if !matches!(t.tool, ToolType::PhotonDrop | ToolType::PhotonSphere | ToolType::PhotonCrystal) && t.is_rare_item() {
+                            return Ok(10u32)
+                        }
+                        Ok((ToolShopItem::from(t).price() / 8) as u32)
+                    },
+                    ItemDetail::TechniqueDisk(d) => {
+                        Ok((ToolShopItem::from(d).price() / 8) as u32)
+                    },
+                    ItemDetail::Mag(_m) => {
+                        Err(ItemStateError::ItemNotSellable)
+                    },
+                    ItemDetail::ESWeapon(_e) => {
+                        Ok(10u32)
+                    },
+                }
+            },
+            // the number of stacked items sold is handled by the caller. this is just the price of 1
+            InventoryItemDetail::Stacked(stacked_item) => {
+                Ok(((ToolShopItem::from(&stacked_item.tool).price() / 8) as u32) * stacked_item.count() as u32)
+            },
+        }
+    }
+
 }
 
 

src/ship/packet/handler/message.rs

@@ -8,7 +8,7 @@ use crate::ship::location::{ClientLocation, ClientLocationError};
 use crate::ship::items::{ItemManager, ClientItemId};
 use crate::ship::packet::builder;
 use crate::ship::items::state::ItemState;
-use crate::ship::items::actions::{drop_item, drop_partial_item, drop_meseta, equip_item, unequip_item, sort_inventory, use_item, feed_mag};
+use crate::ship::items::actions::{drop_item, drop_partial_item, drop_meseta, equip_item, unequip_item, sort_inventory, use_item, feed_mag, sell_item};
 
 pub async fn request_exp<EG: EntityGateway>(id: ClientId,
                                             request_exp: &RequestExp,

tests/test_shops.rs

@@ -4,6 +4,7 @@ use elseware::entity::item;
 use elseware::ship::ship::{ShipServerState, RecvShipPacket, SendShipPacket};
 use elseware::ship::room::Difficulty;
 use elseware::ship::items::manager::ItemManagerError;
+use elseware::ship::items::state::ItemStateError;
 
 use libpso::packet::ship::*;
 use libpso::packet::messages::*;
@@ -1149,7 +1150,7 @@ async fn test_player_cant_sell_if_meseta_would_go_over_max() {
         item_id: 0x10000,
         amount: 1,
     })))).await.err().unwrap();
-    assert!(matches!(ack.downcast::<ItemManagerError>().unwrap(), ItemManagerError::WalletFull));
+    assert!(matches!(ack.downcast::<ItemStateError>().unwrap(), ItemStateError::FullOfMeseta));
 
     let c1_meseta = entity_gateway.get_character_meseta(&char1.id).await.unwrap();
     assert_eq!(c1_meseta.0, 999995);