don't display log line for events more than 24h ago

1 files changed, 32 insertions, 0 deletions

diff --git a/src/log.rs b/src/log.rs
index a5a9518..b86eecf 100644
--- a/src/log.rs
+++ b/src/log.rs
@@ -1,9 +1,12 @@
 use anyhow::Result;
+use chrono::{offset, LocalResult, NaiveDateTime, Utc};
 use log4rs;
 
 use crate::constant_strings_paths::{ACTION_LOG_PATH, LOG_CONFIG_PATH};
 use crate::utils::extract_lines;
 
+const ONE_DAY_IN_SECONDS: i64 = 24 * 60 * 60;
+
 /// Set the logs.
 /// The configuration is read from a config file defined in `LOG_CONFIG_PATH`
 /// It's a YAML file which defines 2 logs:
@@ -23,3 +26,32 @@ pub fn read_log() -> Result<Vec<String>> {
     let content = std::fs::read_to_string(log_path)?;
     Ok(extract_lines(content))
 }
+
+/// Parse log line, reads its date and compare it to Utc now.
+/// True, If the date is readable and less than a day ago.
+pub fn is_log_recent_engough(line: &str) -> Result<bool> {
+    let strings: Vec<&str> = line.split(" - ").collect();
+    if strings.is_empty() {
+        Ok(false)
+    } else {
+        Ok(is_recent_enough(to_naive_datetime(strings[0])?))
+    }
+}
+
+/// Parse a string like "2023-09-19 20:44:22" to a `chrono::NaiveDateTime`.
+fn to_naive_datetime(str_date: &str) -> Result<NaiveDateTime> {
+    Ok(NaiveDateTime::parse_from_str(
+        str_date,
+        "%Y-%m-%d %H:%M:%S",
+    )?)
+}
+
+/// True iff the datetime can be parsed to Utc and is less than a day ago.
+fn is_recent_enough(dt_naive: NaiveDateTime) -> bool {
+    if let LocalResult::Single(dt_utc) = dt_naive.and_local_timezone(offset::Local) {
+        let delta = Utc::now().timestamp() - dt_utc.timestamp();
+        delta < ONE_DAY_IN_SECONDS
+    } else {
+        false
+    }
+}