commit c4465088293950c12807c9714cc33ebc315f46e4
Author: Edward Shen <code@eddie.sh>
Date:   Wed Feb 3 20:40:06 2021 -0500

    Initial commit

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..b60de5b
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+**/target
diff --git a/Cargo.lock b/Cargo.lock
new file mode 100644
index 0000000..fd42802
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+]
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diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..033c869
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,2 @@
+[workspace]
+members = ["vtse-client", "vtse-common", "vtse-server"]
\ No newline at end of file
diff --git a/vtse-client/Cargo.toml b/vtse-client/Cargo.toml
new file mode 100644
index 0000000..756dc63
--- /dev/null
+++ b/vtse-client/Cargo.toml
@@ -0,0 +1,9 @@
+[package]
+name = "vtse-client"
+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]
diff --git a/vtse-client/src/main.rs b/vtse-client/src/main.rs
new file mode 100644
index 0000000..e7a11a9
--- /dev/null
+++ b/vtse-client/src/main.rs
@@ -0,0 +1,3 @@
+fn main() {
+    println!("Hello, world!");
+}
diff --git a/vtse-common/Cargo.toml b/vtse-common/Cargo.toml
new file mode 100644
index 0000000..edd07c6
--- /dev/null
+++ b/vtse-common/Cargo.toml
@@ -0,0 +1,9 @@
+[package]
+name = "vtse-common"
+version = "0.1.0"
+authors = ["Edward Shen <code@eddie.sh>"]
+edition = "2018"
+
+[dependencies]
+serde = { version = "1", features = ["derive"] }
+thiserror = "1"
\ No newline at end of file
diff --git a/vtse-common/src/lib.rs b/vtse-common/src/lib.rs
new file mode 100644
index 0000000..0a00bd3
--- /dev/null
+++ b/vtse-common/src/lib.rs
@@ -0,0 +1,10 @@
+pub mod operations;
+pub mod stock;
+
+#[cfg(test)]
+mod tests {
+    #[test]
+    fn it_works() {
+        assert_eq!(2 + 2, 4);
+    }
+}
diff --git a/vtse-common/src/operations.rs b/vtse-common/src/operations.rs
new file mode 100644
index 0000000..887b7e1
--- /dev/null
+++ b/vtse-common/src/operations.rs
@@ -0,0 +1,6 @@
+use crate::stock::StockName;
+
+pub(crate) enum MarketOperation {
+    Buy,
+    Sell,
+}
diff --git a/vtse-common/src/stock.rs b/vtse-common/src/stock.rs
new file mode 100644
index 0000000..e18ed94
--- /dev/null
+++ b/vtse-common/src/stock.rs
@@ -0,0 +1,19 @@
+use serde::Deserialize;
+use std::str::FromStr;
+use thiserror::Error;
+
+#[derive(Deserialize, Clone, Eq, PartialEq, Ord, PartialOrd, Hash, Debug, Default)]
+pub struct StockName(String);
+
+#[derive(Error, Debug)]
+pub enum StockNameParseError {}
+
+impl FromStr for StockName {
+    type Err = StockNameParseError;
+
+    fn from_str(s: &str) -> Result<Self, Self::Err> {
+        Ok(Self(s.to_string()))
+    }
+}
+
+pub(crate) struct Stock {}
diff --git a/vtse-server/Cargo.toml b/vtse-server/Cargo.toml
new file mode 100644
index 0000000..d311860
--- /dev/null
+++ b/vtse-server/Cargo.toml
@@ -0,0 +1,17 @@
+[package]
+name = "vtse-server"
+version = "0.1.0"
+authors = ["Edward Shen <code@eddie.sh>"]
+edition = "2018"
+
+[dependencies]
+vtse-common = { path = "../vtse-common" }
+log = "0.4"
+simple_logger = "1.11"
+tokio = { version = "1", features = ["full"] }
+tokio-stream = { version = "0.1", features = ["net"] }
+anyhow = "1"
+uuid = { version = "0.8", features = ["v4"] }
+serde = { version = "1", features = ["derive"] }
+serde_json = "1"
+bytes = "1"
\ No newline at end of file
diff --git a/vtse-server/src/main.rs b/vtse-server/src/main.rs
new file mode 100644
index 0000000..3f1748e
--- /dev/null
+++ b/vtse-server/src/main.rs
@@ -0,0 +1,60 @@
+use crate::operations::ServerOperation;
+use anyhow::anyhow;
+use bytes::BytesMut;
+use log::{error, info};
+use tokio::io::AsyncReadExt;
+use tokio::net::{TcpListener, TcpStream};
+use tokio_stream::{wrappers::TcpListenerStream, StreamExt};
+
+mod operations;
+
+pub(crate) type Result<T> = std::result::Result<T, anyhow::Error>;
+
+#[tokio::main]
+async fn main() -> Result<()> {
+    simple_logger::SimpleLogger::default().init()?;
+
+    let mut listener_stream = TcpListener::bind("localhost:8080")
+        .await
+        .map(TcpListenerStream::new)?;
+
+    info!("Successfully bound to port");
+
+    while let Some(Ok(stream)) = listener_stream.next().await {
+        tokio::task::spawn(async {
+            match handle_stream(stream).await {
+                Ok(_) => (),
+                Err(e) => error!("{}", e),
+            }
+        });
+    }
+
+    info!("Cleanly shut down. Goodbye!");
+
+    Ok(())
+}
+
+async fn handle_stream(mut socket: TcpStream) -> Result<()> {
+    // only accept data that can fit in 256 bytes
+    let mut buffer = BytesMut::with_capacity(256);
+    loop {
+        let bytes_read = socket.read_buf(&mut buffer).await?;
+        match bytes_read {
+            0 => return Err(anyhow!("Failed to read bytes, assuming socket is closed.")),
+            n => {
+                let data = buffer.split_to(n); // O(1)
+                let parsed = serde_json::from_slice::<ServerOperation>(&data)?;
+                match parsed {
+                    ServerOperation::Query(op) => {
+                        dbg!(op);
+                    }
+                    ServerOperation::Meta(op) => {
+                        dbg!(op);
+                    }
+                }
+                buffer.unsplit(data); // O(1)
+            }
+        }
+        buffer.clear();
+    }
+}
diff --git a/vtse-server/src/operations.rs b/vtse-server/src/operations.rs
new file mode 100644
index 0000000..3a43bda
--- /dev/null
+++ b/vtse-server/src/operations.rs
@@ -0,0 +1,56 @@
+use serde::Deserialize;
+use vtse_common::stock::StockName;
+
+#[derive(Deserialize, Debug, PartialEq)]
+#[serde(untagged)]
+pub(crate) enum ServerOperation {
+    Query(QueryOperation),
+    Meta(MetaOperation),
+}
+
+#[derive(Deserialize, Debug, PartialEq)]
+#[serde(tag = "type", rename_all = "snake_case")]
+pub(crate) enum QueryOperation {
+    StockInfo { stock: StockName },
+}
+
+#[derive(Deserialize, Debug, PartialEq)]
+#[serde(tag = "type", rename_all = "snake_case")]
+pub(crate) enum MetaOperation {
+    Register { username: String, password: String },
+}
+
+#[cfg(test)]
+mod deserialize {
+    use super::*;
+    use serde_json::json;
+    use std::str::FromStr;
+
+    #[test]
+    fn server_op_is_transparent() {
+        assert_eq!(
+            serde_json::from_value::<ServerOperation>(json!({
+                "type": "stock_info",
+                "stock": "Gura",
+            }))
+            .unwrap(),
+            ServerOperation::Query(QueryOperation::StockInfo {
+                stock: StockName::from_str("Gura").unwrap()
+            })
+        )
+    }
+
+    #[test]
+    fn query_op() {
+        assert_eq!(
+            serde_json::from_value::<QueryOperation>(json!({
+                "type": "stock_info",
+                "stock": "Gura",
+            }))
+            .unwrap(),
+            QueryOperation::StockInfo {
+                stock: StockName::from_str("Gura").unwrap()
+            }
+        )
+    }
+}
diff --git a/vtse-server/src/user.rs b/vtse-server/src/user.rs
new file mode 100644
index 0000000..2204f2d
--- /dev/null
+++ b/vtse-server/src/user.rs
@@ -0,0 +1 @@
+pub(crate) struct ApiKey(String);