From dbe92e49623773f96e634ca7b3506049b43931a7 Mon Sep 17 00:00:00 2001
From: Michael Zhang <mail@mzhang.io>
Date: Tue, 16 Feb 2021 15:33:36 -0600
Subject: [PATCH] a

---
 .github/workflows/doc.yml |  4 +--
 Cargo.lock                |  1 +
 Cargo.toml                |  1 +
 docs/src/SUMMARY.md       |  2 +-
 docs/src/chapter_1.md     |  1 -
 docs/src/intro.md         |  4 +++
 src/lib.rs                |  2 ++
 src/mail/imap2.rs         | 64 ++++++++++++++++++++++++++++++++++++++-
 src/main.rs               |  6 ----
 9 files changed, 74 insertions(+), 11 deletions(-)
 delete mode 100644 docs/src/chapter_1.md
 create mode 100644 docs/src/intro.md

diff --git a/.github/workflows/doc.yml b/.github/workflows/doc.yml
index 690f454..983af5a 100644
--- a/.github/workflows/doc.yml
+++ b/.github/workflows/doc.yml
@@ -3,8 +3,8 @@ on: [push]
 name: CI
 
 jobs:
-  build_and_test:
-    name: Rust project
+  doc:
+    name: panorama
     runs-on: ubuntu-latest
     steps:
       - name: checkout
diff --git a/Cargo.lock b/Cargo.lock
index 2092ed2..92a865a 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -649,6 +649,7 @@ dependencies = [
  "inotify",
  "lettre",
  "panorama-imap",
+ "parking_lot",
  "pin-project",
  "rustls-connector",
  "serde",
diff --git a/Cargo.toml b/Cargo.toml
index 0a58e47..adecd74 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -23,6 +23,7 @@ futures = "0.3.12"
 inotify = { version = "0.9.2", features = ["stream"] }
 lettre = "0.9.5"
 panorama-imap = { path = "imap", version = "0" }
+parking_lot = "0.11.1"
 pin-project = "1.0.4"
 rustls-connector = "0.13.1"
 serde = { version = "1.0.123", features = ["derive"] }
diff --git a/docs/src/SUMMARY.md b/docs/src/SUMMARY.md
index 7390c82..976f211 100644
--- a/docs/src/SUMMARY.md
+++ b/docs/src/SUMMARY.md
@@ -1,3 +1,3 @@
 # Summary
 
-- [Chapter 1](./chapter_1.md)
+- [Intro](./intro.md)
diff --git a/docs/src/chapter_1.md b/docs/src/chapter_1.md
deleted file mode 100644
index b743fda..0000000
--- a/docs/src/chapter_1.md
+++ /dev/null
@@ -1 +0,0 @@
-# Chapter 1
diff --git a/docs/src/intro.md b/docs/src/intro.md
new file mode 100644
index 0000000..17f0ec1
--- /dev/null
+++ b/docs/src/intro.md
@@ -0,0 +1,4 @@
+# Intro
+
+Panorama is a personal information manager.
+
diff --git a/src/lib.rs b/src/lib.rs
index dfe41a2..aa8862b 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -2,6 +2,8 @@
 //! ===
 
 #![deny(missing_docs)]
+// TODO: get rid of this before any kind of public release
+#![allow(unused_imports)]
 
 #[macro_use]
 extern crate anyhow;
diff --git a/src/mail/imap2.rs b/src/mail/imap2.rs
index 49140c4..02b718a 100644
--- a/src/mail/imap2.rs
+++ b/src/mail/imap2.rs
@@ -1,14 +1,22 @@
 // let's try this again
 
+use std::collections::HashMap;
 use std::sync::Arc;
 
 use anyhow::Result;
-use futures::stream::Stream;
+use futures::{
+    future::{Future, TryFuture},
+    stream::Stream,
+};
+use panorama_imap::builders::command::Command;
+use parking_lot::Mutex;
 use tokio::{
     io::{AsyncRead, AsyncWrite},
     net::TcpStream,
+    sync::{oneshot, Notify},
 };
 use tokio_rustls::{rustls::ClientConfig, webpki::DNSNameRef, TlsConnector};
+use tokio_util::codec::{Framed, Decoder, LinesCodec};
 
 use crate::config::{ImapConfig, TlsMethod};
 
@@ -25,6 +33,7 @@ pub async fn open_imap_connection(config: ImapConfig) -> Result<()> {
             begin_authentication(config, stream).await
         }
         TlsMethod::Starttls => {
+            let cmd_mgr = CommandManager::new(stream);
             todo!()
         }
     }
@@ -48,9 +57,62 @@ async fn perform_tls_negotiation(
     Ok(stream)
 }
 
+async fn fetch_capabilities(stream: impl AsyncRead + AsyncWrite) -> Result<Vec<String>> {
+    let codec = LinesCodec::new();
+    let framed = codec.framed(stream);
+
+    // framed.send("a0 CAPABILITY");
+    todo!()
+}
+
 async fn begin_authentication(
     config: ImapConfig,
     stream: impl AsyncRead + AsyncWrite,
 ) -> Result<()> {
     Ok(())
 }
+
+trait ImapStream: AsyncRead + AsyncWrite + Unpin {}
+impl<T: AsyncRead + AsyncWrite + Unpin> ImapStream for T {}
+
+struct CommandManager<'a> {
+    id: usize,
+    in_flight: Arc<Mutex<HashMap<usize, oneshot::Sender<()>>>>,
+    stream: Framed<Box<dyn ImapStream + 'a>, LinesCodec>,
+}
+
+impl<'a> CommandManager<'a> {
+    pub fn new(stream: impl ImapStream + 'a) -> Self {
+        let codec = LinesCodec::new();
+        let framed = codec.framed(Box::new(stream) as Box<_>);
+
+        CommandManager {
+            id: 0,
+            in_flight: Arc::new(Mutex::new(HashMap::new())),
+            stream: framed,
+        }
+    }
+
+    pub fn decompose(self) -> impl ImapStream + 'a {
+        let parts = self.stream.into_parts();
+        parts.io
+    }
+
+    pub async fn listen(&self) {
+        loop {
+        }
+    }
+
+    pub fn run(&mut self, command: Command) -> impl TryFuture {
+        let id = self.id;
+        self.id += 1;
+
+        let (tx, rx) = oneshot::channel();
+        {
+            let mut in_flight = self.in_flight.lock();
+            in_flight.insert(id, tx);
+        }
+
+        async { rx.await }
+    }
+}
diff --git a/src/main.rs b/src/main.rs
index 1752dd7..3e84a0b 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,7 +1,6 @@
 #[macro_use]
 extern crate tracing;
 
-use std::fs::{File, OpenOptions};
 use std::path::PathBuf;
 
 use anyhow::Result;
@@ -68,8 +67,3 @@ async fn main() -> Result<()> {
     std::process::exit(0);
     // Ok(())
 }
-
-fn setup_logger(opt: &Opt) -> Result<()> {
-    debug!("logging set up.");
-    Ok(())
-}