X-Git-Url: http://git.scottworley.com/tattlekey/blobdiff_plain/5f5768318f897a20464ca177b5de64157afe0938..d9c1d028d1f70711493df2e394ea044fd79af46a:/server/src/main.rs

diff --git a/server/src/main.rs b/server/src/main.rs
index e7351db..96f35b2 100644
--- a/server/src/main.rs
+++ b/server/src/main.rs
@@ -17,7 +17,7 @@
 use serde::Serialize;
 use std::collections::HashMap;
 use std::net::UdpSocket;
-use std::time::{Duration, SystemTime};
+use std::time::{Duration, SystemTime, UNIX_EPOCH};
 
 const MESSAGE_SIZE: usize = 12;
 const LOGFILENAME: &str = "log.csv";
@@ -32,19 +32,23 @@ struct MessageKey {
 #[derive(Debug)]
 struct Message {
     key: MessageKey,
-    t: SystemTime,
+    t: u64,
 }
 
 impl From<&[u8; MESSAGE_SIZE]> for Message {
     fn from(value: &[u8; MESSAGE_SIZE]) -> Self {
         let ago = u32::from_be_bytes(value[8..=11].try_into().expect("I can't count"));
+        let press_time = SystemTime::now() - Duration::new(ago.into(), 0);
         Self {
             key: MessageKey {
                 epoch: u32::from_be_bytes(value[0..=3].try_into().expect("I can't count")),
                 device: u16::from_be_bytes(value[4..=5].try_into().expect("I can't count")),
                 seq: u16::from_be_bytes(value[6..=7].try_into().expect("I can't count")),
             },
-            t: SystemTime::now() - Duration::new(ago.into(), 0),
+            t: press_time
+                .duration_since(UNIX_EPOCH)
+                .expect("Bad time?")
+                .as_secs(),
         }
     }
 }
@@ -60,17 +64,17 @@ impl TryFrom<&[u8]> for Message {
 
 #[derive(Debug)]
 struct Range {
-    start: SystemTime,
-    end: SystemTime,
+    start: u64,
+    end: u64,
 }
 impl Range {
-    fn new(t: &SystemTime) -> Self {
+    fn new(t: &u64) -> Self {
         Self { start: *t, end: *t }
     }
-    fn contains(&self, t: &SystemTime) -> bool {
+    fn contains(&self, t: &u64) -> bool {
         t > &self.start && t < &self.end
     }
-    fn extend(&mut self, t: &SystemTime) {
+    fn extend(&mut self, t: &u64) {
         if t < &self.start {
             self.start = *t;
         }
@@ -80,6 +84,16 @@ impl Range {
     }
 }
 
+fn merge_message(presses: &mut HashMap<MessageKey, Range>, message: Message) {
+    if let Some(r) = presses.get_mut(&message.key) {
+        if !r.contains(&message.t) {
+            r.extend(&message.t);
+        }
+    } else {
+        presses.insert(message.key, Range::new(&message.t));
+    }
+}
+
 fn open_log_for_writing() -> csv::Writer<std::fs::File> {
     let log_file_exists = std::path::Path::new(LOGFILENAME).exists();
     let logfile = std::fs::OpenOptions::new()
@@ -110,13 +124,7 @@ fn main() {
                 log.serialize((&message.key, message.t))
                     .expect("Couldn't write log");
                 log.flush().expect("Couldn't flush log");
-                if let Some(r) = presses.get_mut(&message.key) {
-                    if !r.contains(&message.t) {
-                        r.extend(&message.t);
-                    }
-                } else {
-                    presses.insert(message.key, Range::new(&message.t));
-                }
+                merge_message(&mut presses, message);
             }
         }
     }