more preliminary work

Cargo.lock

@@ -437,9 +437,9 @@ dependencies = [
 
 [[package]]
 name = "idna"
-version = "0.2.0"
+version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "02e2673c30ee86b5b96a9cb52ad15718aa1f966f5ab9ad54a8b95d5ca33120a9"
+checksum = "de910d521f7cc3135c4de8db1cb910e0b5ed1dc6f57c381cd07e8e661ce10094"
 dependencies = [
  "matches",
  "unicode-bidi",
@@ -491,9 +491,9 @@ dependencies = [
 
 [[package]]
 name = "libc"
-version = "0.2.85"
+version = "0.2.86"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7ccac4b00700875e6a07c6cde370d44d32fa01c5a65cdd2fca6858c479d28bb3"
+checksum = "b7282d924be3275cec7f6756ff4121987bc6481325397dde6ba3e7802b1a8b1c"
 
 [[package]]
 name = "libsodium-sys"
@@ -597,6 +597,17 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "num-bigint"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5e9a41747ae4633fce5adffb4d2e81ffc5e89593cb19917f8fb2cc5ff76507bf"
+dependencies = [
+ "autocfg",
+ "num-integer",
+ "num-traits",
+]
+
 [[package]]
 name = "num-integer"
 version = "0.1.44"
@@ -849,6 +860,17 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "rust_decimal"
+version = "1.10.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e3e5a94e2006dd60c603d8481c65b665b4b6694f78d23e15869ad10eb883e36e"
+dependencies = [
+ "arrayvec",
+ "num-traits",
+ "serde",
+]
+
 [[package]]
 name = "rustls"
 version = "0.19.0"
@@ -906,9 +928,9 @@ dependencies = [
 
 [[package]]
 name = "serde_json"
-version = "1.0.61"
+version = "1.0.62"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4fceb2595057b6891a4ee808f70054bd2d12f0e97f1cbb78689b59f676df325a"
+checksum = "ea1c6153794552ea7cf7cf63b1231a25de00ec90db326ba6264440fa08e31486"
 dependencies = [
  "itoa",
  "ryu",
@@ -1054,10 +1076,12 @@ dependencies = [
  "log",
  "md-5",
  "memchr",
+ "num-bigint",
  "once_cell",
  "parking_lot",
  "percent-encoding",
  "rand 0.7.3",
+ "rust_decimal",
  "rustls",
  "serde",
  "serde_json",
@@ -1201,9 +1225,9 @@ checksum = "cda74da7e1a664f795bb1f8a87ec406fb89a02522cf6e50620d016add6dbbf5c"
 
 [[package]]
 name = "tokio"
-version = "1.1.1"
+version = "1.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6714d663090b6b0acb0fa85841c6d66233d150cdb2602c8f9b8abb03370beb3f"
+checksum = "e8190d04c665ea9e6b6a0dc45523ade572c088d2e6566244c1122671dbf4ae3a"
 dependencies = [
  "autocfg",
  "bytes",
@@ -1221,9 +1245,9 @@ dependencies = [
 
 [[package]]
 name = "tokio-macros"
-version = "1.0.0"
+version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "42517d2975ca3114b22a16192634e8241dc5cc1f130be194645970cc1c371494"
+checksum = "caf7b11a536f46a809a8a9f0bb4237020f70ecbf115b842360afb127ea2fda57"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -1243,9 +1267,9 @@ dependencies = [
 
 [[package]]
 name = "tokio-stream"
-version = "0.1.2"
+version = "0.1.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "76066865172052eb8796c686f0b441a93df8b08d40a950b062ffb9a426f00edd"
+checksum = "1981ad97df782ab506a1f43bf82c967326960d278acf3bf8279809648c3ff3ea"
 dependencies = [
  "futures-core",
  "pin-project-lite",
@@ -1336,7 +1360,9 @@ version = "0.1.0"
 name = "vtse-common"
 version = "0.1.0"
 dependencies = [
+ "rust_decimal",
  "serde",
+ "sqlx",
  "thiserror",
  "uuid",
 ]
@@ -1362,6 +1388,10 @@ dependencies = [
  "vtse-common",
 ]
 
+[[package]]
+name = "vtse-web"
+version = "0.1.0"
+
 [[package]]
 name = "wasi"
 version = "0.9.0+wasi-snapshot-preview1"

Cargo.toml

@@ -1,2 +1,2 @@
 [workspace]
-members = ["vtse-client", "vtse-common", "vtse-server"]
+members = ["vtse-client", "vtse-common", "vtse-server", "vtse-web"]

vtse-common/Cargo.toml

@@ -5,6 +5,8 @@ authors = ["Edward Shen <code@eddie.sh>"]
 edition = "2018"
 
 [dependencies]
+rust_decimal = "1.10.2"
+sqlx = { version = "0.5", features = ["postgres", "decimal"] }
 serde = { version = "1", features = ["derive"] }
 thiserror = "1"
 uuid = { version = "0.8", features = ["serde", "v4"] }

vtse-common/src/net.rs

@@ -1,3 +1,4 @@
+use crate::stock::Stock;
 use serde::Serialize;
 use uuid::Uuid;
 
@@ -8,6 +9,7 @@ pub enum ServerResponse {
     Success,
     NewApiKey(Uuid),
     UserError(UserError),
+    StockInfo(Stock),
 }
 
 #[derive(Serialize)]

vtse-common/src/stock.rs

@@ -1,10 +1,21 @@
-use serde::Deserialize;
+use rust_decimal::Decimal;
+use serde::{Deserialize, Serialize};
 use std::str::FromStr;
 use thiserror::Error;
 
-#[derive(Deserialize, Clone, Eq, PartialEq, Ord, PartialOrd, Hash, Debug, Default)]
+#[derive(
+    Serialize, Deserialize, Clone, Eq, PartialEq, Ord, PartialOrd, Hash, Debug, Default, sqlx::Type,
+)]
+#[serde(transparent)]
+#[sqlx(transparent)]
 pub struct StockName(String);
 
+impl From<String> for StockName {
+    fn from(s: String) -> Self {
+        Self(s)
+    }
+}
+
 #[derive(Error, Debug)]
 pub enum StockNameParseError {}
 
@@ -16,4 +27,56 @@ impl FromStr for StockName {
     }
 }
 
-pub(crate) struct Stock {}
+#[derive(Serialize, Deserialize, Clone, Eq, PartialEq, Ord, PartialOrd, Hash, Debug, Default)]
+#[serde(transparent)]
+pub struct StockSymbol(String);
+
+impl From<String> for StockSymbol {
+    fn from(s: String) -> Self {
+        Self(s)
+    }
+}
+
+#[derive(Serialize, Deserialize, Clone, Eq, PartialEq, Ord, PartialOrd, Hash, Debug, Default)]
+#[serde(transparent)]
+pub struct StockDescription(String);
+
+impl From<String> for StockDescription {
+    fn from(s: String) -> Self {
+        Self(s)
+    }
+}
+
+#[derive(Serialize, Deserialize, Copy, Clone, PartialEq, PartialOrd, Debug, Default)]
+#[serde(transparent)]
+pub struct StockPrice(Decimal);
+
+impl From<Decimal> for StockPrice {
+    fn from(p: Decimal) -> Self {
+        Self(p)
+    }
+}
+
+#[derive(Serialize, Deserialize, Clone, PartialEq, Debug)]
+pub struct Stock {
+    name: StockName,
+    symbol: StockSymbol,
+    description: StockDescription,
+    price: StockPrice,
+}
+
+impl Stock {
+    pub fn new(
+        name: impl Into<StockName>,
+        symbol: impl Into<StockSymbol>,
+        description: impl Into<StockDescription>,
+        price: impl Into<StockPrice>,
+    ) -> Self {
+        Self {
+            name: name.into(),
+            symbol: symbol.into(),
+            description: description.into(),
+            price: price.into(),
+        }
+    }
+}

vtse-server/Cargo.toml

@@ -14,7 +14,7 @@ serde = { version = "1", features = ["derive"] }
 serde_json = "1"
 simple_logger = "1.11"
 sodiumoxide = "0.2"
-sqlx = { version = "0.5", features = [ "runtime-tokio-rustls", "macros", "uuid", "postgres" ] }
+sqlx = { version = "0.5", features = [ "runtime-tokio-rustls", "macros", "uuid", "postgres", "decimal" ] }
 thiserror = "1"
 tokio = { version = "1", features = ["full"] }
 tokio-stream = { version = "0.1", features = ["net"] }

vtse-server/src/main.rs

@@ -67,7 +67,7 @@ async fn handle_stream(mut socket: TcpStream, pool: PgPool) -> Result<()> {
         debug!("Parsed operation: {:?}", parsed);
         let response = match parsed {
             ServerOperation::Query(op) => match op {
-                QueryOperation::StockInfo { stock } => todo!(),
+                QueryOperation::StockInfo { stock } => state.stock_info(stock, &pool).await?,
                 QueryOperation::User(_) => todo!(),
             },
             ServerOperation::User(op) => match op {
@@ -80,8 +80,8 @@ async fn handle_stream(mut socket: TcpStream, pool: PgPool) -> Result<()> {
                 }
             },
             ServerOperation::Market(op) => match op {
-                MarketOperation::Buy(stock_name) => state.buy(stock_name)?,
+                MarketOperation::Buy(stock_name) => state.buy(stock_name, &pool)?,
-                MarketOperation::Sell(stock_name) => state.sell(stock_name)?,
+                MarketOperation::Sell(stock_name) => state.sell(stock_name, &pool)?,
             },
         };
 

vtse-server/src/state.rs

@@ -4,7 +4,7 @@ use sqlx::{query, PgPool};
 use thiserror::Error;
 use vtse_common::{
     net::{ServerResponse, UserError},
-    stock::StockName,
+    stock::{Stock, StockName},
 };
 
 #[derive(Error, Debug)]
@@ -25,6 +25,7 @@ pub(crate) enum AppState {
     Authorized { user_id: i32 },
 }
 
+/// Helper functions
 impl AppState {
     pub(crate) fn new() -> Self {
         Self::Unauthorized
@@ -39,6 +40,25 @@ impl AppState {
     }
 }
 
+/// Query operations impl
+impl AppState {
+    pub(crate) async fn stock_info(&self, stock_name: StockName, pool: &PgPool) -> OperationResult {
+        let stock = query!(
+            "SELECT name, symbol, description, price FROM stocks WHERE name = $1::text",
+            stock_name as StockName
+        )
+        .fetch_one(pool)
+        .await?;
+
+        Ok(ServerResponse::StockInfo(Stock::new(
+            stock.name,
+            stock.symbol,
+            stock.description,
+            stock.price,
+        )))
+    }
+}
+
 /// User operation implementation
 impl AppState {
     pub(crate) async fn login(&mut self, api_key: ApiKey, pool: &PgPool) -> OperationResult {
@@ -149,13 +169,17 @@ impl AppState {
 
 /// Market operation implementation
 impl AppState {
-    pub(crate) fn buy(&self, stock_name: StockName) -> OperationResult {
+    pub(crate) fn buy(&self, stock_name: StockName, pool: &PgPool) -> OperationResult {
-        // self.assert_state(AppState::Authorized)?;
+        if !matches!(self, Self::Authorized{..}) {
+            return Err(StateError::WrongState);
+        }
         todo!()
     }
 
-    pub(crate) fn sell(&self, stock_name: StockName) -> OperationResult {
+    pub(crate) fn sell(&self, stock_name: StockName, pool: &PgPool) -> OperationResult {
-        // self.assert_state(AppState::Authorized)?;
+        if !matches!(self, Self::Authorized{..}) {
+            return Err(StateError::WrongState);
+        }
         todo!()
     }
 }

vtse-web/Cargo.toml

@@ -0,0 +1,9 @@
+[package]
+name = "vtse-web"
+version = "0.1.0"
+authors = ["Edward Shen <code@eddie.sh>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]

vtse-web/src/main.rs

@@ -0,0 +1,3 @@
+fn main() {
+    println!("Hello, world!");
+}