From 11ba5c3d7e039c3c092e45fdd55c0c6a9e144842 Mon Sep 17 00:00:00 2001
From: Curly Bryce <curlybryce@protonmail.com>
Date: Wed, 3 Jul 2024 19:50:40 -0600
Subject: transfers

---
 README.md   | 14 ++++++++++++--
 TODO        |  1 -
 src/db.rs   | 44 ++++++++++++++++++++++++++++++++++++++++----
 src/main.rs | 11 +++++++----
 src/uid.rs  |  5 +----
 5 files changed, 60 insertions(+), 15 deletions(-)

diff --git a/README.md b/README.md
index de06e31..abb254b 100644
--- a/README.md
+++ b/README.md
@@ -15,7 +15,7 @@
       - JSON `[{"name": "NAME", "id": "ID"}, ...]`
     - 400 Not Found
       - JSON `"Not Found"`
-- GET `/user/all`
+- GET `/user/list`
     - Same as GET `/user/by_name/`
 - POST `/user/register`
   - Request
@@ -77,4 +77,14 @@
     - 200 Ok
       - JSON `"Deleted"`
     - 401 Unauthorized
-      - JSON `"Not Authenticated"`
\ No newline at end of file
+      - JSON `"Not Authenticated"`
+- POST `/transfer/out`
+  - Request
+    - JSON `{"id": "ID", "session": "SESSION_KEY", "to": "ID", "color": "COLOR", "amount": 0}`
+      - ID and SESSION_KEY are from the from account
+      - TO_ID is the account the tokens are going to
+      - amount may be 0
+  - Response
+    - 200 Ok
+    - 500 Internal Server Error
+      - JSON `"Could not complete transaction"`
\ No newline at end of file
diff --git a/TODO b/TODO
index 2ee5694..af593f0 100644
--- a/TODO
+++ b/TODO
@@ -1,5 +1,4 @@
 Need to make a proper http status code thingy
-Transfers
 Token Values
 Token Stock Prices (Values)
 Config
\ No newline at end of file
diff --git a/src/db.rs b/src/db.rs
index a6ca7b0..85e259b 100644
--- a/src/db.rs
+++ b/src/db.rs
@@ -17,7 +17,7 @@ impl Config {
     }
 }
 
-#[derive(Debug, Serialize, Deserialize, Clone, Copy)]
+#[derive(Debug, Serialize, Deserialize, Clone, Copy, PartialEq, Eq)]
 pub enum Color {
     White,
     Red,
@@ -186,7 +186,7 @@ impl DB {
             }
         }
 
-        Err("Not Found".into())
+        Err("User Not Found".into())
     }
 
     pub async fn get_user_authenticated(&self, id: UID, session: &String) -> Result<&User, String> {
@@ -208,7 +208,7 @@ impl DB {
             }
         }
 
-        Err("Not Found".into())
+        Err("User Not Found".into())
     }
 
     pub async fn get_user_by_name(&self, name: &str) -> Result<Vec<User>, String> {
@@ -220,7 +220,7 @@ impl DB {
         }
 
         if vec.len() == 0 {
-            Err("Not Found".into())
+            Err("User(s) Not Found".into())
         } else {
             return Ok(vec)
         }
@@ -303,4 +303,40 @@ impl DB {
         let _ = self.save().await;
         r
     }
+
+    pub async fn transfer(&mut self, from: UID, to: UID, session: &String, color: Color, amount: usize) -> Result<(), String> {
+        let mut subtracted = false;
+        
+        let from = self.get_mut_user(from).await?;
+        // If authenticated
+        if from.authenticate(session) {
+            for v in from.tokovec.iter_mut() {
+                // Get the token of the right color
+                if v.color == color {
+                    // If amount is greater or equal to amount being sent
+                    // and if the amount does not overflow past 0
+                    if v.amount >= amount && v.amount.checked_sub(amount) != None {
+                        // Remove from account
+                        v.amount -= amount;
+                        subtracted = true;
+                    }
+                }
+            }
+        }
+
+        let to = self.get_mut_user(to).await?;
+        if subtracted {
+            for v in to.tokovec.iter_mut() {
+                if v.color == color {
+                    v.amount += amount
+                }
+            }
+
+            let _ = self.save().await;
+            Ok(())
+        } else {
+            Err("Could not complete transaction".into())
+        }
+
+    }
 }
diff --git a/src/main.rs b/src/main.rs
index aad989f..62ae685 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -60,7 +60,7 @@ async fn get_users_by_name(user: &str, db: &State<Mutex<DB>>) -> (Status, Result
         Err(n) => (Status::NotFound, Err(n.into()))
     }
 }
-#[get("/all")]
+#[get("/list")]
 async fn get_all_users(db: &State<Mutex<DB>>) -> (Status, Result<Json<Vec<UserOut>>, Json<String>>) {
     let db = db.lock().await;
     match db.get_all_users().await {
@@ -183,9 +183,12 @@ struct TransferForm {
     amount: usize,
 }
 #[post("/out", data="<data>", format="json")]
-async fn transfer_out(data: Json<TransferForm>, db: &State<Mutex<DB>>) -> (Status, Result<(), String>) {
-    println!("{:?}", data);
-    (Status::Ok, Ok(()))
+async fn transfer_out(data: Json<TransferForm>, db: &State<Mutex<DB>>) -> (Status, Result<(), Json<String>>) {
+    let mut db = db.lock().await;
+    match db.transfer(data.id, data.to, &data.session, data.color, data.amount).await {
+        Ok(n) => (Status::Ok, Ok(n.into())),
+        Err(n) => (Status::InternalServerError, Err(n.into()))
+    }
 }
 
 #[launch]
diff --git a/src/uid.rs b/src/uid.rs
index 6a748cd..6361638 100644
--- a/src/uid.rs
+++ b/src/uid.rs
@@ -1,6 +1,6 @@
 use base16ct::lower;
 use rocket::request::FromParam;
-use serde::{de::{IntoDeserializer, Visitor}, ser::SerializeTupleStruct, Deserialize, Deserializer, Serialize};
+use serde::{de::{IntoDeserializer, Visitor}, Deserialize, Deserializer, Serialize};
 
 #[derive(Debug, Clone, Copy, PartialEq, Eq)]
 pub struct UID(u8, u8);
@@ -16,7 +16,6 @@ impl<'de> Visitor<'de> for UIDVisitor {
     fn visit_str<E>(self, v: &str) -> Result<Self::Value, E>
         where
             E: serde::de::Error, {
-        println!("TEST");
         if v.is_ascii() {
             if v.len() == 4 {
                 match hex::decode(v) {
@@ -24,7 +23,6 @@ impl<'de> Visitor<'de> for UIDVisitor {
                     Err(_) => panic!()
                 }
             } else {
-                println!("NOT");
                 panic!()
             }
         } else {
@@ -36,7 +34,6 @@ impl<'de> Deserialize<'de> for UID {
     fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
         where
             D: serde::Deserializer<'de> {
-        println!("TEST2");
         deserializer.deserialize_str(UIDVisitor)
     }
 }
-- 
cgit v1.2.3