From 1bb1cf7aac639b6bb6df89b3a091bebb61a4462b Mon Sep 17 00:00:00 2001
From: Manos Pitsidianakis <el13635@mail.ntua.gr>
Date: Sat, 2 Mar 2019 21:40:57 +0200
Subject: [PATCH] add notification filter

concerns #64
---
 src/bin.rs                         |  1 +
 ui/src/components/notifications.rs | 35 ++++++++++++++++++++++++++++++
 ui/src/conf.rs                     |  5 +++++
 ui/src/conf/notifications.rs       | 33 ++++++++++++++++++++++++++++
 4 files changed, 74 insertions(+)
 create mode 100644 ui/src/conf/notifications.rs

diff --git a/src/bin.rs b/src/bin.rs
index fb0071d15..a0e8edd5b 100644
--- a/src/bin.rs
+++ b/src/bin.rs
@@ -75,6 +75,7 @@ fn main() {
     let xdg_notifications =
         Entity::from(Box::new(ui::components::notifications::XDGNotifications {}));
     state.register_entity(xdg_notifications);
+    state.register_entity(Entity::from(Box::new(ui::components::notifications::NotificationFilter {})));
 
     /* Keep track of the input mode. See ui::UIMode for details */
     'main: loop {
diff --git a/ui/src/components/notifications.rs b/ui/src/components/notifications.rs
index 7fd846ede..cb73d0f53 100644
--- a/ui/src/components/notifications.rs
+++ b/ui/src/components/notifications.rs
@@ -23,6 +23,7 @@
   Notification handling components.
   */
 use notify_rust::Notification as notify_Notification;
+use std::process::{Command, Stdio};
 
 use super::*;
 
@@ -104,3 +105,37 @@ mod tests {
             .unwrap();
     }
 }
+
+/// Passes notifications to the OS using the XDG specifications.
+#[derive(Debug)]
+pub struct NotificationFilter {}
+
+impl fmt::Display for NotificationFilter {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        // TODO display subject/info
+        write!(f, "")
+    }
+}
+
+impl Component for NotificationFilter {
+    fn draw(&mut self, _grid: &mut CellBuffer, _area: Area, _context: &mut Context) {}
+    fn process_event(&mut self, event: &mut UIEvent, context: &mut Context) -> bool {
+        if let UIEventType::Notification(ref title, ref body) = event.event_type {
+            if let Some(ref bin) = context.runtime_settings.notifications.script {
+                if let Err(v) = Command::new(bin)
+                    .arg(title
+                         .as_ref()
+                         .map(|v| v.as_str())
+                         .unwrap_or("Event"))
+                        .arg(body)
+                        .stdin(Stdio::piped())
+                        .stdout(Stdio::piped())
+                        .spawn() {
+                            eprintln!("{:?}",v);
+                        }
+            }
+        }
+        false
+    }
+    fn set_dirty(&mut self) {}
+}
diff --git a/ui/src/conf.rs b/ui/src/conf.rs
index 7e6a1c267..81e5f2238 100644
--- a/ui/src/conf.rs
+++ b/ui/src/conf.rs
@@ -25,6 +25,7 @@ extern crate xdg;
 extern crate bincode;
 
 pub mod pager;
+pub mod notifications;
 
 pub mod accounts;
 pub use self::accounts::Account;
@@ -33,6 +34,7 @@ use self::config::{Config, File, FileFormat};
 use melib::conf::AccountSettings;
 use melib::error::*;
 use pager::PagerSettings;
+use self::notifications::NotificationsSettings;
 
 use self::serde::{de, Deserialize, Deserializer};
 use std::collections::HashMap;
@@ -110,6 +112,7 @@ impl FileAccount {
 struct FileSettings {
     accounts: HashMap<String, FileAccount>,
     pager: PagerSettings,
+    notifications: NotificationsSettings,
 }
 
 #[derive(Debug, Clone, Default)]
@@ -134,6 +137,7 @@ impl AccountConf {
 pub struct Settings {
     pub accounts: HashMap<String, AccountConf>,
     pub pager: PagerSettings,
+    pub notifications: NotificationsSettings,
 }
 
 impl FileSettings {
@@ -179,6 +183,7 @@ impl Settings {
         Settings {
             accounts: s,
             pager: fs.pager,
+            notifications: fs.notifications,
         }
     }
 }
diff --git a/ui/src/conf/notifications.rs b/ui/src/conf/notifications.rs
new file mode 100644
index 000000000..96c754992
--- /dev/null
+++ b/ui/src/conf/notifications.rs
@@ -0,0 +1,33 @@
+/*
+ * meli - notifications conf module
+ *
+ * Copyright 2018 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/>.
+ */
+
+fn none() -> Option<String> {
+    None
+}
+
+/// Settings for the notifications function.
+#[derive(Debug, Deserialize, Clone, Default)]
+pub struct NotificationsSettings {
+    /// A command to pipe notifications through
+    /// Default: None
+    #[serde(default = "none")]
+    pub script: Option<String>,
+}