MQTT message is received

Fix inconsistent spacing between lines

.gitignore

@@ -4,3 +4,4 @@
 .vscode/launch.json
 .vscode/ipch
 todo.txt
+*.ini

README.md

@@ -25,3 +25,17 @@ stored in folder **/client**
 go to **/client**
 * cargo build
 * cargo run
+
+### Deamon
+Requires ''systemd''
+
+Install by creating a link to this project
+```
+/etc/systemd/system# ln -s /home/c3ma/led-board/client/ledBoard.service ledBoard.service
+systemctl daemon-reload
+systemctl enable ledBoard.service
+```
+Start deamon with
+```
+systemctl start ledBoard.service
+```

client/bin/Cargo.toml

@@ -22,3 +22,9 @@ serde_derive = "1.0"
 serde_json = "1.0"
 # end of web stuff
 ping = "0.4.1"
+paho-mqtt = "0.13.2"
+async-trait = "0.1"
+# Ini File parser
+rust-ini = "0.21"
+lazy_static = "1.4"
+futures = "0.3"

client/bin/src/config.rs

@@ -0,0 +1,78 @@
+// config.rs
+
+/// @file
+/// @brief Configuration settings for the application.
+///
+/// This file defines the configuration settings that are used throughout the application.
+
+use lazy_static::lazy_static;
+use std::sync::Mutex;
+
+use ini::Ini;
+use std::path::Path;
+
+const DEFAULT_REFRESH_INTERVAL: u32 = 50;
+
+
+// Define a struct to hold the INI configuration
+#[derive(Debug)]
+pub struct Config {
+    pub mqttPrefix: String,
+    pub mqttIPAddress: String,
+    pub panelIPAddress: String,
+    pub refreshInterval: u32
+}
+
+impl Config {
+    // Constructor for Config
+    pub fn new(mqtt_prefix: &str, mqtt_ip_address: &str, panel_ip_address: &str, interval: u32) -> Self {
+        Config {
+            mqttPrefix: mqtt_prefix.to_string(),
+            mqttIPAddress: mqtt_ip_address.to_string(),
+            panelIPAddress: panel_ip_address.to_string(),
+            refreshInterval: interval
+        }
+    }
+
+    pub fn newDefault() -> Self {
+        Config {
+            mqttPrefix: "".to_string(),
+            mqttIPAddress: "".to_string(),
+            panelIPAddress: "".to_string(),
+            refreshInterval: DEFAULT_REFRESH_INTERVAL
+        }
+    }
+}
+
+// Function to read the INI file
+pub fn read_ini_file(filename: String) -> Config {
+    
+    let mut config = Config::newDefault();
+    let i = Ini::load_from_file(filename).unwrap();
+    for (sec, prop) in i.iter() {
+        
+        for (k, v) in prop.iter()
+        {
+            println!("{:?} {}:{}", sec, k, v);
+            if (sec.is_some()) && (sec.unwrap() == "mqtt")
+            {
+                if k == "path"
+                {
+                    config.mqttPrefix = v.trim().to_string();
+                }
+                else if k == "server"
+                {
+                    config.mqttIPAddress = v.trim().to_string();
+                }
+            }
+            else if (sec.is_some()) && (sec.unwrap() == "panel")
+            {
+                if k == "ip"
+                {
+                    config.panelIPAddress = v.trim().to_string();
+                }
+            }
+        }
+    }
+    return config;
+}

client/bin/src/main.rs

@@ -1,10 +1,13 @@
 use std::{time::Duration, fmt::format};
+use std::sync::{RwLock, Arc};
+use async_trait::async_trait;
+use paho_mqtt::{Client,Message as MqttMessage};
 use str;
 use bit::BitIndex;
 use chrono_tz::Europe::Berlin;
 use chrono::{DateTime, NaiveDateTime, Utc, Timelike};
 use std::time::{SystemTime, UNIX_EPOCH};
-use openweathermap::forecast::Weather;
+use openweathermap::{forecast::Weather, Receiver};
 use substring::Substring;
 use tinybmp::Bmp;
 use core::time;
@@ -20,13 +23,22 @@ use std::net::UdpSocket;
 use std::{env, thread};
 use std::io;
 use std::process::ExitCode;
-
 use openweathermap::forecast::Forecast;
 use straba::NextDeparture;
+use std::path::Path;
+
 // This declaration will look for a file named `straba.rs` and will
 // insert its contents inside a module named `straba` under this scope
 mod straba;
 
+use std::sync::Mutex;
+use lazy_static::lazy_static;
+use futures::executor::block_on;
+// Load INI-File handling module
+mod config;
+use config::Config;
+use crate::config::read_ini_file;
+
 const IMAGE_SIZE_BYTE: usize = (IMAGE_WIDTH_BYTE * IMAGE_HEIGHT) as usize; /* one byte contains 8 LEDs, one in each bit */
 const IMAGE_WIDTH: u32 = 5 * 32;
 const IMAGE_WIDTH_BYTE: u32 = IMAGE_WIDTH / 8; /* one byte contains 8 LEDs, one in each bit */
@@ -36,6 +48,37 @@ const IMAGE_HEIGHT_BYTE: u32 = 40;
 const IMAGE_LENGTH: usize = (IMAGE_WIDTH_BYTE * IMAGE_HEIGHT_BYTE) as usize;
 const PACKAGE_LENGTH: usize = (IMAGE_LENGTH + 1) as usize;
 
+/// @struct MqttClient
+/// @brief A struct to hold application configuration settings.
+///
+/// The `MqttClient` struct contains various configuration parameters that control the behavior of the application.
+pub struct MqttClient {
+    /// MQTT client option
+    pub mqtt_client: Option<paho_mqtt::Client>,
+}
+
+impl MqttClient {
+    /// Creates a new instance of MqttClient with mqtt_client initialized to None.
+    pub fn new() -> Self {
+        MqttClient { 
+            mqtt_client: None,
+        }
+    }
+
+    /// Setter for mqtt_client
+    pub fn set_mqtt_client(&mut self, client: Option<paho_mqtt::Client>) {
+        self.mqtt_client = client;
+    }
+
+    /// Getter for mqtt_client
+    pub fn get_mqtt_client(&self) -> &Option<paho_mqtt::Client> {
+        &self.mqtt_client
+    }
+}
+
+lazy_static! {
+    static ref MQTTCLIENT: Mutex<MqttClient> = Mutex::new(MqttClient::new());
+}
 
 struct UdpDisplay {
     image: [u8; IMAGE_SIZE_BYTE],
@@ -243,6 +286,13 @@ fn render_clock(display: &mut UdpDisplay){
     .unwrap();
 }
 
+fn render_mqtt_message(display: &mut UdpDisplay, mqtt_message: String){
+    let text_style = MonoTextStyle::new(&FONT_6X10, BinaryColor::On);
+    Text::new(&mqtt_message, Point::new((1) as i32, 37), text_style)
+    .draw(display)
+    .unwrap();
+}
+
 fn render_strab_partial(display: &mut UdpDisplay, station: &String, diff: i64, height: i32) {
     let text_style = MonoTextStyle::new(&FONT_6X10, BinaryColor::On);
     let mut diff_str = format!("{}min", (diff / 60));
@@ -276,13 +326,15 @@ fn render_strab_partial(display: &mut UdpDisplay, station: &String, diff: i64, h
 }
 
 fn render_strab(display: &mut UdpDisplay, straba_res: &NextDeparture) {
-    render_strab_partial(display, &straba_res.outbound_station, straba_res.outbound_diff, 15);
-    render_strab_partial(display, &straba_res.inbound_station, straba_res.inbound_diff, 25);
+    render_strab_partial(display, &straba_res.outbound_station, straba_res.outbound_diff, 17);
+    render_strab_partial(display, &straba_res.inbound_station, straba_res.inbound_diff, 27);
 }
+/////////////////////////////////////////////////////////////////////////////
 
 fn send_package(ipaddress: String, 
                 data: &Option<Result<Forecast, String>>,
-                straba_res: &NextDeparture) {
+                straba_res: &NextDeparture,
+                mqtt_message: Option<String>) {
     let mut package: [u8; PACKAGE_LENGTH] = [0; PACKAGE_LENGTH];
 
     // Brightness
@@ -300,6 +352,10 @@ fn send_package(ipaddress: String,
         render_strab(&mut display, straba_res);
     }
 
+    if mqtt_message.is_some() {
+        render_mqtt_message(&mut display, mqtt_message.unwrap());       
+    }
+
     render_clock(&mut display);
 
 
@@ -318,6 +374,11 @@ LEDboardClient <ip address>"
     );
     println!("one argument necessary!");
     println!("<ip address>");
+    println!("second argument is optional:");
+    println!("<ip of mqtt server>");
+    println!("");
+    println!("Config mode");
+    println!("--config <file.ini>");
 }
 
 fn check_connection(ipaddress: String) -> bool {
@@ -348,25 +409,153 @@ fn check_connection(ipaddress: String) -> bool {
     return device_online;
 }
 
-fn main() -> ExitCode {
-    let args: Vec<String> = env::args().collect();
-    match args.len() {
-        // no arguments passed
-        1 => {
-            // show a help message
-            help();
-            return ExitCode::SUCCESS;
+struct Message {
+    string: Option<String>
+}
+
+// Lazy static to load the config file content
+lazy_static! {
+    pub static ref GlobalConfiguration: Mutex<Config> = Mutex::new({
+        Config::newDefault()
+     });
+}
+
+
+
+/// Asynchronously publishes a message to the specified topic.
+/// 
+/// @author Gwen2.5
+/// 
+/// # Arguments
+/// * `topic` - The MQTT topic to which the message will be published.
+/// * `message` - The message to be published.
+/// 
+/// # Returns
+/// True if the message was successfully published, false otherwise.
+fn publish_message(topic: &str, message: &str) {
+    let msg = MqttMessage::new(topic, message, 0);
+
+    let mqtt_client =  <std::option::Option<Client> as Clone>::clone(&(MQTTCLIENT.lock().unwrap().get_mqtt_client())).unwrap();
+    // Publish the message and ensure it completes without error
+   let result =  mqtt_client.publish(msg);
+    match result {
+        Ok(_) => (),
+        Err(error) => {
+            println!("Error publishing {error:?}");
         }
-        // one argument passed
-        2 => {
-            let ip = &args[1];
+    }
+}
 
+fn main_function(parameter1: String, parameter2: Option<String>) -> ExitCode {
 
-            let mut device_online = check_connection(ip.to_string());
-            if !device_online {
-                println!("{} not online", ip);
+    // Read configuration file
+    if  (parameter1 == "--config") && (parameter2.is_some())
+    {
+        let configOrMqttAddress: String = parameter2.unwrap();
+        if Path::new(&configOrMqttAddress).exists()
+        {
+            let mut gc = GlobalConfiguration.lock().unwrap();
+            let c = read_ini_file(configOrMqttAddress);
+            
+            //update configuration
+            gc.mqttIPAddress = c.mqttIPAddress;
+            gc.panelIPAddress = c.panelIPAddress;
+            gc.mqttPrefix = c.mqttPrefix;
+            println!("Read INI {:} @ {:}", gc.mqttPrefix, gc.mqttIPAddress);
+        }
+        else
+        {
+            /* Panel and MQTT Configured*/
+            println!("INI file not found");
             return ExitCode::FAILURE;
         }
+    }
+    else
+    {
+        let mut gc = GlobalConfiguration.lock().unwrap();   
+        gc.panelIPAddress = parameter1;
+        gc.mqttIPAddress = parameter2.unwrap();
+    }
+
+    let mut device_online = false;
+    if GlobalConfiguration.lock().unwrap().panelIPAddress.len() > 0
+    {
+        device_online = check_connection(GlobalConfiguration.lock().unwrap().panelIPAddress.clone());
+        if !device_online {
+            println!("{:} not online", &GlobalConfiguration.lock().unwrap().panelIPAddress);
+            return ExitCode::FAILURE;
+        }
+    }
+
+    let mut gmc = MQTTCLIENT.lock().unwrap();
+    let mqtt_message: Arc<Mutex<Message>> = Arc::new(Mutex::new(Message{ string: None }));
+
+    if GlobalConfiguration.lock().is_ok() && (GlobalConfiguration.lock().unwrap().mqttIPAddress.len() > 0)
+    {
+        // Define the set of options for the create.
+        // Use an ID for a persistent session.
+        let create_opts = paho_mqtt::CreateOptionsBuilder::new()
+        .server_uri(GlobalConfiguration.lock().unwrap().mqttIPAddress.clone())
+        .client_id("ledboard")
+        .finalize();
+        // Create a client.
+        let local_mqtt = paho_mqtt::Client::new(create_opts).unwrap();
+        
+        println!("MQTT | Connecting to {:} MQTT server...", GlobalConfiguration.lock().unwrap().mqttIPAddress);
+        
+        let lwt = paho_mqtt::Message::new(&format!("{}/lwt", GlobalConfiguration.lock().unwrap().mqttPrefix), "lost connection", 1);
+
+        // The connect options. Defaults to an MQTT v3.x connection.
+        let conn_opts = paho_mqtt::ConnectOptionsBuilder::new()
+            .keep_alive_interval(Duration::from_secs(20))
+            .will_message(lwt)
+            .finalize();
+
+        // Make the connection to the broker
+        println!("MQTT | Connecting to the MQTT server...");
+        let result = local_mqtt.connect(conn_opts);
+
+        match result {
+            Ok(_) => {
+                println!("MQTT | Server connected");
+            },
+            Err(error) => {
+                println!("MQTT | Server connecting {error:?}");
+            },
+        }
+
+        // Subscribe to the desired topic(s).
+        local_mqtt.subscribe("room/ledboard", paho_mqtt::QOS_0);
+
+        // Starts the client receiving messages
+        let rx_queue = local_mqtt.start_consuming();
+
+        // Attach a closure to the client to receive callback
+        // on incoming messages.
+        let mqtt_message_for_callback = mqtt_message.clone();
+        
+        // Create a thread that stays pending over incoming messages.
+        let handle = thread::spawn(move || {
+            for mqttmsg in rx_queue.iter() {
+                if let Some(mqttmsg) = mqttmsg {
+                    let topic = mqttmsg.topic();
+                    let payload_str = mqttmsg.payload_str();
+
+                    //println!("MQTT | {} - {}", topic, payload_str);
+                    let mut lock = mqtt_message_for_callback.lock().unwrap();
+                    lock.string = Some(payload_str.to_string());
+                    println!("Received: -> {}", mqttmsg.payload_str());
+                } else {
+                    println!("Unsubscribe: connection closed");
+                    break;
+                }
+            }
+        });
+        // Define the set of options for the connection
+
+        // move local instance to global scope
+        gmc.set_mqtt_client(Some(local_mqtt));
+    }
 
     let receiver = openweathermap::init_forecast("Mannheim",
     "metric",
@@ -381,8 +570,12 @@ fn main() -> ExitCode {
     println!("{:?} {:?}s", straba_res.outbound_station, straba_res.outbound_diff);
     println!("{:?} {:?}s", straba_res.inbound_station , straba_res.inbound_diff);
 
+    if GlobalConfiguration.lock().is_ok() && (GlobalConfiguration.lock().unwrap().panelIPAddress.len() > 0)
+    {
         // Render start
-            send_package(ip.to_string(), &last_data, &straba_res);
+        send_package(GlobalConfiguration.lock().unwrap().panelIPAddress.clone(), &last_data, &straba_res, Some("MQTT: room/ledboard".to_string()));
+    }
+
     loop {
         let st_now = SystemTime::now();
         let seconds = st_now.duration_since(UNIX_EPOCH).unwrap().as_secs();
@@ -401,21 +594,70 @@ fn main() -> ExitCode {
             }
         }
 
-                if (straba_res.request_time + 50) < seconds as i64 {
-                    device_online = check_connection(ip.to_string());
+        if (straba_res.request_time + (GlobalConfiguration.lock().unwrap().refreshInterval as i64)) < seconds as i64 {
+            if GlobalConfiguration.lock().is_ok() && GlobalConfiguration.lock().unwrap().mqttIPAddress.len() > 0
+            {
+                device_online = check_connection(GlobalConfiguration.lock().unwrap().mqttIPAddress.clone());
+            }
+
+            if GlobalConfiguration.lock().is_ok() && GlobalConfiguration.lock().unwrap().mqttPrefix.len() > 0
+            {
+                //FIXME if mqtt_client.is_some()
+                fun_publishinfoviamqtt(&straba_res);
+            }
+            
             // request once a minute new data
-                    if device_online == true {
             straba_res = straba::fetch_data(None);
             println!("Update {:?} {:?}s", straba_res.outbound_station, straba_res.outbound_diff);
             println!("Update {:?} {:?}s", straba_res.inbound_station , straba_res.inbound_diff);
         }
+
+        let lock = mqtt_message.lock().unwrap();
+        let mqtt_message: Option<String>;
+        if lock.string.is_some() {
+            mqtt_message = lock.string.clone();
+        } else {
+            mqtt_message = None;
         }
 
-                if device_online == true {
+        if (GlobalConfiguration.lock().is_ok()) && (GlobalConfiguration.lock().unwrap().mqttIPAddress.len() > 0) && (device_online == true) {
             // Render new image
-                    send_package(ip.to_string(), &last_data, &straba_res);
+            send_package(GlobalConfiguration.lock().unwrap().mqttIPAddress.clone(), &last_data, &straba_res, mqtt_message);
         }
+        // Handle MQTT messages
+        
     }
+}
+
+fn fun_publishinfoviamqtt(straba_res: &NextDeparture) {
+    let topic_in_station: String = format!("{}{}", GlobalConfiguration.lock().unwrap().mqttPrefix, "/inbound/station");
+    let station_name: String = format!("{}", straba_res.inbound_station);
+    // Execute async publish synchronously
+    let _ = publish_message(topic_in_station.as_str(), station_name.as_str());
+    println!("MQTT published {:?} = {:?}s", topic_in_station, straba_res.outbound_station);
+}
+
+fn main() -> ExitCode {
+    let args: Vec<String> = env::args().collect();
+    match args.len() {
+        // no arguments passed
+        1 => {
+            // show a help message
+            help();
+            return ExitCode::SUCCESS;
+        }
+        // one argument passed
+        2 => {
+            let ip = &args[1];
+            return main_function(ip.to_string(), None);
+        }
+        // two argument passed
+        3 => {
+            let ip = &args[1];
+            let mqtt = &args[2];
+            return main_function(   ip.to_string(),
+                                    Some(mqtt.to_string())
+                                );
         }
         // all the other cases
         _ => {

client/bin/src/straba.rs

@@ -1,6 +1,6 @@
 use chrono::DateTime;
 use std::time::{SystemTime, UNIX_EPOCH};
-
+use chrono::Local;
 use serde::Deserialize;
 
 const STATION_URL:&str = "https://www.rnv-online.de/rest/departure/2494";
@@ -79,10 +79,11 @@ pub struct NextDeparture {
 }
 
 pub fn fetch_data(debug_print : Option<bool>) -> NextDeparture {
-
+    let date = Local::now();
     let st_now = SystemTime::now();
     let seconds = st_now.duration_since(UNIX_EPOCH).unwrap().as_secs();
-    let url = &format!("{}?datetime={}", STATION_URL, seconds);
+    let timeString = date.format("%Y-%m-%d %H:%M:%S");
+    let url = &format!("{}?datetime={}", STATION_URL, timeString);
     let result = reqwest::blocking::get(url);
     
     let mut return_value = NextDeparture {
@@ -118,10 +119,24 @@ pub fn fetch_data(debug_print : Option<bool>) -> NextDeparture {
         return return_value;
     }
 
+    if debug_print.is_some() && debug_print.unwrap() == true {
+        println!("----------- Seconds {:} {:} requesting ... -----------", seconds, timeString);
+    }
     // parse JSON result.. search of both directions
     let json = body.unwrap();
-    for el in json.graph_ql.response.journeys.elements {
+    
     if debug_print.is_some() && debug_print.unwrap() == true {
+        println!("Requesting {:}", json.graph_ql.response.name);
+        println!("Elements {:}", json.graph_ql.response.journeys.elements.len() );
+        //println!("------------------------- %< ----------------------------");
+        //println!("{}", &raw_text);
+        //println!("------------------------- %< ----------------------------");
+    }
+
+    for el in json.graph_ql.response.journeys.elements {
+
+        if debug_print.is_some() && debug_print.unwrap() == true {
+            println!("Requesting {:}", json.graph_ql.response.name);
             println!("Line {:}", el.line.line_group.label);
         }
         for stop in el.stops {
@@ -140,6 +155,8 @@ pub fn fetch_data(debug_print : Option<bool>) -> NextDeparture {
                     if diff <  return_value.outbound_diff {
                         return_value.outbound_station = stop.destination_label;
                         return_value.outbound_diff = diff;
+                    } else if debug_print.is_some() && debug_print.unwrap() == true {
+                        println!("Unkown diff Stop   {:} {:} (in {:} seconds)", stop.destination_label, txt_departure, diff );
                     }
                 } else if stop.destination_label.contains("Hochschule") ||
                             stop.destination_label.contains("Hauptbahnhof") ||
@@ -147,13 +164,19 @@ pub fn fetch_data(debug_print : Option<bool>) -> NextDeparture {
                     if diff <  return_value.inbound_diff {
                         return_value.inbound_station = stop.destination_label;
                         return_value.inbound_diff = diff;
+                    } else if debug_print.is_some() && debug_print.unwrap() == true {
+                        println!("Unkown diff Stop   {:} {:} (in {:} seconds)", stop.destination_label, txt_departure, diff );
                     }
+                } else if debug_print.is_some() && debug_print.unwrap() == true {
+                    println!("Unkown Stop   {:} {:} (in {:} seconds)", stop.destination_label, txt_departure, diff );
                 }
             } else {
                 println!("Planned {:} {:?}", stop.destination_label, stop.planned_departure.iso_string)
             }
         }
     }
-
+    if debug_print.is_some() && debug_print.unwrap() == true {
+        println!("----------- end of straba.rs -----------");
+    }
     return_value
 }

client/ledBoard.service

@@ -0,0 +1,17 @@
+[Unit]
+Description=Log uptime in scoreboard
+DefaultDependencies=no
+
+[Service]
+Type=simple
+Restart=on-failure
+User=c3ma
+
+# Specify users home as working directory
+WorkingDirectory=/home/c3ma/
+# Define wrapper to update and start project
+ExecStart=/usr/bin/bash <project home>/client/ledboard.sh
+TimeoutStartSec=0
+
+[Install]
+WantedBy=network.target

client/ledboard.sh

@@ -0,0 +1,12 @@
+#!/bin/bash
+# Wrapper script to update project and build project
+#
+#Set target IP address
+IP=
+# Path to this project
+HOSTCLIENT=
+cd $HOSTCLIENT
+/usr/bin/pkill LEDboardClient
+git pull
+cargo build
+$HOSTCLIENT/target/debug/LEDboardClient $IP