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             "[🔊 {title} - {artist}] | ✉ {unread_count} | {date_time}",
  58             title = map.get("title").unwrap_or(&String::from("")),
  59             artist = map.get("artist").unwrap_or(&String::from("")),
  60             unread_count = map.get("unread_count").unwrap_or(&String::from("?")),
  61             date_time = map.get("date_time").unwrap_or(&get_local_time_string()),
  62         ))
  63         .spawn();
  64 }
  65
  66 fn main() -> Result<(), Box<dyn std::error::Error>> {
  67     let arc_locked_xset_map = Arc::new(Mutex::new(HashMap::new()));
  68     let conn = Connection::new_session()?;
  69
  70     let mail_proxy = conn.with_proxy(
  71         "com.jacobcasper.Mail",
  72         "/com/jacobcasper/Mail/Unread",
  73         Duration::from_millis(5000),
  74     );
  75
  76     let mail_match_map = arc_locked_xset_map.clone();
  77     let _ = mail_proxy.match_signal(
  78         move |m: ComJacobCasperMailUnreadCount, _: &Connection, _: &Message| {
  79             update_map(
  80                 mail_match_map.clone(),
  81                 "unread_count",
  82                 m.count.to_string().as_str(),
  83             );
  84             true
  85         },
  86     );
  87
  88     let spotify_proxy = conn.with_proxy(
  89         "org.mpris.MediaPlayer2.spotify",
  90         "/org/mpris/MediaPlayer2",
  91         Duration::from_millis(5000),
  92     );
  93
  94     let spotify_match_map = arc_locked_xset_map.clone();
  95     let _ = spotify_proxy.match_signal(
  96         move |pc: PropertiesPropertiesChanged, _: &Connection, _: &Message| {
  97             pc.changed_properties["Metadata"]
  98                 .0
  99                 .as_iter()
 100                 .and_then(|mut iter| {
 101                     // Iterating over a RefArg goes key, value, key, value... Insane honestly.
 102                     while let Some(key) = iter.next() {
 103                         let key_str = key.as_str()?;
 104                         let value = iter.next();
 105
 106                         match key_str {
 107                             "xesam:artist" => {
 108                                 // Variant holding a variant that should just be a Vec<&str> I
 109                                 // believe. This is _the recommended_ way to do this by the author.
 110                                 let inner_value = value?.as_iter()?.next()?.as_iter()?.next()?;
 111                                 let artist = inner_value.as_str()?;
 112                                 update_map(spotify_match_map.clone(), "artist", artist);
 113                             }
 114                             "xesam:title" => {
 115                                 let title = value?.as_iter()?.next()?.as_str()?;
 116                                 update_map(spotify_match_map.clone(), "title", title);
 117                             }
 118                             _ => (),
 119                         }
 120                     }
 121                     Some(())
 122                 });
 123             true
 124         },
 125     );
 126
 127     let date_time_map = arc_locked_xset_map.clone();
 128     let _ = thread::spawn(move || -> Result<(), std::time::SystemTimeError> {
 129         let mut last_run_at = std::time::SystemTime::now();
 130         loop {
 131             let sys_time = std::time::SystemTime::now();
 132             let elapsed_time = sys_time.duration_since(last_run_at)?;
 133             if elapsed_time.as_secs() > 60 {
 134                 last_run_at = sys_time;
 135                 update_map(
 136                     date_time_map.clone(),
 137                     "date_time",
 138                     get_local_time_string().as_str(),
 139                 );
 140             }
 141             thread::sleep(Duration::from_millis(5000));
 142         }
 143     });
 144
 145     loop {
 146         conn.process(Duration::from_millis(1000))?;
 147     }
 148 }