src/main.rs

   1 use dbus::arg;
   2 use dbus::blocking::stdintf::org_freedesktop_dbus::PropertiesPropertiesChanged;
   3 use dbus::blocking::Connection;
   4 use dbus::message::Message;
   5 use std::collections::HashMap;
   6 use std::process::Command;
   7 use std::sync::{Arc, Mutex};
   8 use std::thread;
   9 use std::time::Duration;
  10
  11 // Custom signal type impl
  12 // Mostly copied from library examples
  13 #[derive(Debug)]
  14 pub struct ComJacobCasperMailUnreadCount {
  15     pub count: u32,
  16 }
  17
  18 impl arg::AppendAll for ComJacobCasperMailUnreadCount {
  19     fn append(&self, iter: &mut arg::IterAppend) {
  20         arg::RefArg::append(&self.count, iter);
  21     }
  22 }
  23
  24 impl arg::ReadAll for ComJacobCasperMailUnreadCount {
  25     fn read(iter: &mut arg::Iter) -> Result<Self, arg::TypeMismatchError> {
  26         Ok(ComJacobCasperMailUnreadCount {
  27             count: iter.read()?,
  28         })
  29     }
  30 }
  31
  32 impl dbus::message::SignalArgs for ComJacobCasperMailUnreadCount {
  33     const NAME: &'static str = "UnreadCount";
  34     const INTERFACE: &'static str = "com.jacobcasper.Mail";
  35 }
  36
  37 fn get_local_time_string() -> std::string::String {
  38     use chrono::prelude::*;
  39     let local_time = chrono::prelude::Local::now();
  40     return format!(
  41         "{}-{}-{:02} {}:{}",
  42         local_time.year(),
  43         local_time.month(),
  44         local_time.day(),
  45         local_time.hour(),
  46         local_time.minute(),
  47     );
  48 }
  49
  50 fn update_map(arc_map: Arc<Mutex<HashMap<String, String>>>, key: &str, val: &str) {
  51     let clone_arc = arc_map.clone();
  52     let mut map = clone_arc.lock().unwrap();
  53     map.insert(String::from(key), String::from(val));
  54     let _ = Command::new("xsetroot")
  55         .arg("-name")
  56         .arg(format!(
  57             "[{playback_status} {title} - {artist}] | ✉ {unread_count} | {date_time}",
  58             playback_status = map.get("playback-status").unwrap_or(&String::from("🔈")),
  59             title = map.get("title").unwrap_or(&String::from("")),
  60             artist = map.get("artist").unwrap_or(&String::from("")),
  61             unread_count = map.get("unread_count").unwrap_or(&String::from("?")),
  62             date_time = map.get("date_time").unwrap_or(&get_local_time_string()),
  63         ))
  64         .spawn();
  65 }
  66
  67 fn main() -> Result<(), Box<dyn std::error::Error>> {
  68     let arc_locked_xset_map = Arc::new(Mutex::new(HashMap::new()));
  69     let conn = Connection::new_session()?;
  70
  71     let mail_proxy = conn.with_proxy(
  72         "com.jacobcasper.Mail",
  73         "/com/jacobcasper/Mail/Unread",
  74         Duration::from_millis(5000),
  75     );
  76
  77     let mail_match_map = arc_locked_xset_map.clone();
  78     let _ = mail_proxy.match_signal(
  79         move |m: ComJacobCasperMailUnreadCount, _: &Connection, _: &Message| {
  80             update_map(
  81                 mail_match_map.clone(),
  82                 "unread_count",
  83                 m.count.to_string().as_str(),
  84             );
  85             true
  86         },
  87     );
  88
  89     let spotify_proxy = conn.with_proxy(
  90         "org.mpris.MediaPlayer2.spotify",
  91         "/org/mpris/MediaPlayer2",
  92         Duration::from_millis(5000),
  93     );
  94
  95     let spotify_match_map = arc_locked_xset_map.clone();
  96     let _ = spotify_proxy.match_signal(
  97         move |pc: PropertiesPropertiesChanged, _: &Connection, _: &Message| {
  98             pc.changed_properties["Metadata"]
  99                 .0
 100                 .as_iter()
 101                 .and_then(|mut iter| {
 102                     // Iterating over a RefArg goes key, value, key, value... Insane honestly.
 103                     while let Some(key) = iter.next() {
 104                         let key_str = key.as_str()?;
 105                         let value = iter.next();
 106
 107                         match key_str {
 108                             "xesam:artist" => {
 109                                 // Variant holding a variant that should just be a Vec<&str> I
 110                                 // believe. This is _the recommended_ way to do this by the author.
 111                                 let inner_value = value?.as_iter()?.next()?.as_iter()?.next()?;
 112                                 let artist = inner_value.as_str()?;
 113                                 update_map(spotify_match_map.clone(), "artist", artist);
 114                             }
 115                             "xesam:title" => {
 116                                 let title = value?.as_iter()?.next()?.as_str()?;
 117                                 update_map(spotify_match_map.clone(), "title", title);
 118                             }
 119                             _ => (),
 120                         }
 121                     }
 122                     Some(())
 123                 });
 124             let playback_status = &pc.changed_properties["PlaybackStatus"].0;
 125             update_map(
 126                 spotify_match_map.clone(),
 127                 "playback_status",
 128                 match &*playback_status.as_str().unwrap_or("🔈") {
 129                     "Playing" => "🔊",
 130                     _ => "🔈",
 131                 },
 132             );
 133             true
 134         },
 135     );
 136
 137     let date_time_map = arc_locked_xset_map.clone();
 138     let _ = thread::spawn(move || -> Result<(), std::time::SystemTimeError> {
 139         let mut last_run_at = std::time::SystemTime::now();
 140         loop {
 141             let sys_time = std::time::SystemTime::now();
 142             let elapsed_time = sys_time.duration_since(last_run_at)?;
 143             if elapsed_time.as_secs() > 60 {
 144                 last_run_at = sys_time;
 145                 update_map(
 146                     date_time_map.clone(),
 147                     "date_time",
 148                     get_local_time_string().as_str(),
 149                 );
 150             }
 151             thread::sleep(Duration::from_millis(5000));
 152         }
 153     });
 154
 155     loop {
 156         conn.process(Duration::from_millis(1000))?;
 157     }
 158 }