ui: add mailer setting and send shortcut in composer

ui/src/components/mail/compose.rs

@@ -539,6 +539,40 @@ impl Component for Composer {
                 self.set_dirty();
                 return true;
             }
+            UIEventType::Input(Key::Char('s')) if self.mode.is_overview() => {
+                use std::io::Write;
+                use std::process::{Command, Stdio};
+                let settings = &context.settings;
+                let parts = split_command!(settings.mailer.mailer_cmd);
+                let (cmd, args) = (parts[0], &parts[1..]);
+                let mut msmtp = Command::new(cmd)
+                    .args(args)
+                    .stdin(Stdio::piped())
+                    .stdout(Stdio::piped())
+                    .spawn()
+                    .expect("Failed to start mailer command");
+                {
+                    let mut stdin = msmtp.stdin.as_mut().expect("failed to open stdin");
+                    let draft = self.draft.clone().finalise().unwrap();
+                    stdin
+                        .write_all(draft.as_bytes())
+                        .expect("Failed to write to stdin");
+                }
+                context.replies.push_back(UIEvent {
+                    id: 0,
+                    event_type: UIEventType::Notification(
+                        Some("Sent.".into()),
+                        format!(
+                            "Mailer output: {:#?}",
+                            msmtp
+                                .wait_with_output()
+                                .expect("Failed to wait on filter")
+                                .stdout
+                        ),
+                    ),
+                });
+                return true;
+            }
             UIEventType::Input(Key::Char('e')) if self.cursor == Cursor::Body => {
                 /* Edit draft in $EDITOR */
                 use std::process::{Command, Stdio};
@@ -627,7 +661,8 @@ impl Component for Composer {
         }
 
         if self.mode.is_overview() {
-            map.insert("Switch to edit mode", Key::Char('o'));
+            map.insert("Switch to edit mode.", Key::Char('o'));
+            map.insert("Deliver draft to mailer.", Key::Char('s'));
         }
         if self.mode.is_edit() {
             map.insert("Switch to overview", Key::Char('v'));

ui/src/components/mail/view.rs

@@ -158,8 +158,11 @@ impl MailView {
                             .unwrap()
                             .write_all(&v)
                             .expect("Failed to write to stdin");
-                        *v = format!("Text piped through `{}`. Press `v` to open in web browser. \n\n",
-                                     filter_invocation).into_bytes();
+                        *v = format!(
+                            "Text piped through `{}`. Press `v` to open in web browser. \n\n",
+                            filter_invocation
+                        )
+                        .into_bytes();
                         v.extend(html_filter.wait_with_output().unwrap().stdout);
                     }
                 }

ui/src/components/mail/view/envelope.rs

@@ -125,8 +125,11 @@ impl EnvelopeView {
                             .unwrap()
                             .write_all(&v)
                             .expect("Failed to write to stdin");
-                        *v = format!("Text piped through `{}`. Press `v` to open in web browser. \n\n",
-                                     filter_invocation).into_bytes();
+                        *v = format!(
+                            "Text piped through `{}`. Press `v` to open in web browser. \n\n",
+                            filter_invocation
+                        )
+                        .into_bytes();
                         v.extend(html_filter.wait_with_output().unwrap().stdout);
                     }
                 }

ui/src/conf.rs

@@ -24,6 +24,7 @@ extern crate config;
 extern crate serde;
 extern crate xdg;
 
+pub mod mailer;
 pub mod notifications;
 pub mod pager;
 pub mod shortcuts;
@@ -31,6 +32,7 @@ pub mod shortcuts;
 pub mod accounts;
 pub use self::accounts::Account;
 use self::config::{Config, File, FileFormat};
+pub use self::mailer::*;
 pub use self::shortcuts::*;
 
 use self::default_vals::*;
@@ -131,6 +133,7 @@ struct FileSettings {
     pager: PagerSettings,
     notifications: NotificationsSettings,
     shortcuts: Shortcuts,
+    mailer: MailerSettings,
 }
 
 #[derive(Debug, Clone, Default)]
@@ -157,6 +160,7 @@ pub struct Settings {
     pub pager: PagerSettings,
     pub notifications: NotificationsSettings,
     pub shortcuts: Shortcuts,
+    pub mailer: MailerSettings,
 }
 
 impl FileSettings {
@@ -204,6 +208,7 @@ impl Settings {
             pager: fs.pager,
             notifications: fs.notifications,
             shortcuts: fs.shortcuts,
+            mailer: fs.mailer,
         }
     }
 }

ui/src/conf/mailer.rs

@@ -0,0 +1,28 @@
+/*
+ * meli - notifications conf module
+ *
+ * Copyright 2019 Manos Pitsidianakis
+ *
+ * This file is part of meli.
+ *
+ * meli is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * meli is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with meli. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/// Settings for the mailer function.
+#[derive(Debug, Deserialize, Clone, Default)]
+pub struct MailerSettings {
+    /// A command to pipe new emails to
+    /// Required
+    pub mailer_cmd: String,
+}