From 00235fe814d2fe4ca3fb0745f9721cf43eb983e1 Mon Sep 17 00:00:00 2001
From: Manos Pitsidianakis <el13635@mail.ntua.gr>
Date: Sat, 21 Jul 2018 17:29:29 +0300
Subject: [PATCH] Add message composing and piping to msmtp

Closes #16
---
 Cargo.toml                        |  4 +--
 src/bin.rs                        |  2 +-
 ui/src/components/mail/listing.rs | 13 +++++++-
 ui/src/components/mod.rs          | 10 ++++++
 ui/src/lib.rs                     | 54 ++++++++++++++++++++++++++++---
 5 files changed, 74 insertions(+), 9 deletions(-)

diff --git a/Cargo.toml b/Cargo.toml
index ca31553e..1bdd573d 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -16,5 +16,5 @@ melib = { path = "melib", version = "*" }
 ui = { path = "ui", version = "*" }
 
 [profile.release]
-#lto = true
-debug = true
+lto = true
+#debug = true
diff --git a/src/bin.rs b/src/bin.rs
index 22462314..8340ab2e 100644
--- a/src/bin.rs
+++ b/src/bin.rs
@@ -193,7 +193,7 @@ fn main() {
                 Some(false) => {
                     use std::{thread, time};
 
-                    let ten_millis = time::Duration::from_millis(500);
+                    let ten_millis = time::Duration::from_millis(1500);
 
                     thread::sleep(ten_millis);
                     continue 'reap;
diff --git a/ui/src/components/mail/listing.rs b/ui/src/components/mail/listing.rs
index df337977..2e5ba93e 100644
--- a/ui/src/components/mail/listing.rs
+++ b/ui/src/components/mail/listing.rs
@@ -498,8 +498,19 @@ impl Component for MailListing {
                     let tx = context.input_thread();
                     tx.send(true);
                 }
+                let mut dir = std::env::temp_dir();
+                dir.push("meli");
+                std::fs::DirBuilder::new().recursive(true).create(&dir).unwrap();
+                dir.push("foo.txt");
+                let mut f = Box::new(std::fs::File::create(&dir).unwrap());
+                f.write(&new_draft(context));
+                f.flush();
 
+
+                // TODO: check exit status
                 let mut output = Command::new("vim")
+                    .arg("+/^$")
+                    .arg(&dir)
                     .stdin(Stdio::inherit())
                     .stdout(Stdio::inherit())
                     .spawn()
@@ -509,7 +520,7 @@ impl Component for MailListing {
                  * Main loop will wait on children and when they reap them the loop spawns a new
                  * input-thread
                  */
-                context.replies.push_back(UIEvent { id: 0, event_type: UIEventType::Fork(output) });
+                context.replies.push_back(UIEvent { id: 0, event_type: UIEventType::Fork(ForkType::NewDraft(dir,output)) });
                 context.replies.push_back(UIEvent { id: 0, event_type: UIEventType::ChangeMode(UIMode::Fork) });
                 return;
             },
diff --git a/ui/src/components/mod.rs b/ui/src/components/mod.rs
index a4df6768..498be780 100644
--- a/ui/src/components/mod.rs
+++ b/ui/src/components/mod.rs
@@ -173,3 +173,13 @@ fn clear_area(grid: &mut CellBuffer, area: Area) {
         }
     }
 }
+
+fn new_draft(context: &mut Context) -> Vec<u8> {
+    // TODO: Generate proper message-id https://www.jwz.org/doc/mid.html
+    let mut v = String::with_capacity(500);
+    v.push_str("From: \n");
+    v.push_str("To: \n");
+    v.push_str("Subject: \n");
+    v.push_str("Message-Id: \n\n");
+    v.into_bytes()
+}
diff --git a/ui/src/lib.rs b/ui/src/lib.rs
index c4cdcd46..0eeb3e52 100644
--- a/ui/src/lib.rs
+++ b/ui/src/lib.rs
@@ -79,6 +79,12 @@ impl From<RefreshEvent> for ThreadEvent {
     }
 }
 
+#[derive(Debug)]
+pub enum ForkType {
+    Generic(std::process::Child),
+    NewDraft(std::path::PathBuf, std::process::Child),
+}
+
 
 #[derive(Debug)]
 pub enum UIEventType {
@@ -88,11 +94,12 @@ pub enum UIEventType {
     //Quit?
     Resize,
     /// Force redraw.
-    Fork(std::process::Child),
+    Fork(ForkType),
     ChangeMailbox(usize),
     ChangeMode(UIMode),
     Command(String),
     Notification(String),
+    EditDraft(std::path::PathBuf),
 }
 
 
@@ -160,7 +167,7 @@ pub struct State<W: Write> {
 
     grid: CellBuffer,
     stdout: termion::screen::AlternateScreen<termion::raw::RawTerminal<W>>,
-    child: Option<std::process::Child>,
+    child: Option<ForkType>,
     pub mode: UIMode,
     sender: Sender<ThreadEvent>,
     entities: Vec<Entity>,
@@ -324,6 +331,28 @@ impl<W: Write> State<W> {
                 self.stdout.flush().unwrap();
                 return;
             },
+            UIEventType::EditDraft(dir) => {
+            use std::process::{Command, Stdio};
+            use std::io::Read;
+                let mut output = Command::new("msmtp")
+                    .arg("-t")
+                    .stdin(Stdio::piped())
+                    .stdout(Stdio::piped())
+                    .spawn()
+                    .expect("failed to execute process") ;
+                {
+                    let mut in_pipe = output.stdin.as_mut().unwrap();
+                    let mut buf = Vec::new();
+                let mut f = std::fs::File::open(&dir).unwrap();
+
+                    f.read_to_end(&mut buf).unwrap();
+                    in_pipe.write(&buf).unwrap();
+                }
+                let output = output.wait_with_output().expect("Failed to read stdout");
+                eprintln!("{}",String::from_utf8_lossy(&output.stdout));
+
+             return;
+            }
             _ => {},
         }
         /* inform each entity */
@@ -348,19 +377,34 @@ impl<W: Write> State<W> {
     }
     pub fn try_wait_on_child(&mut self) -> Option<bool> {
         if {
-            if let Some(ref mut c) =  self.child {
+            match self.child {
+            Some(ForkType::NewDraft(_,ref mut c)) => { 
                 let mut w = c.try_wait();
                 match w {
                     Ok(Some(_)) => { true },
                     Ok(None) => { false },
                     Err(_) => { return None; },
                 }
-            } else {
+            },
+            Some(ForkType::Generic(ref mut c)) => {
+                let mut w = c.try_wait();
+                match w {
+                    Ok(Some(_)) => { true },
+                    Ok(None) => { false },
+                    Err(_) => { return None; },
+                }
+            },
+                
+            _ => {
                 return None;
             }
         }
+        }
         {
-            self.child = None;
+            if let Some(ForkType::NewDraft(f, _)) = std::mem::replace(&mut self.child, None) {
+                self.rcv_event(UIEvent { id: 0, event_type: UIEventType::EditDraft(f) });
+
+            }
             return Some(true);
         }
         Some(false)