From ee72fbede9f07dc78035f9fc4bf274d10448f9c8 Mon Sep 17 00:00:00 2001
From: Afloat <132809511+Afloat16@users.noreply.github.com>
Date: Tue, 3 Nov 2026 19:46:23 +0700
Subject: [PATCH] Keep non-date paths distinct in HAR API inventories (R3.13)
 (from #605)

---
 crates/analysis/src/web_har.rs                  | 17 ++++++++++++-----
 .../analysis/tests/regression_har_date_paths.rs | 12 ++++++++++++
 2 files changed, 24 insertions(+), 5 deletions(-)
 create mode 100644 crates/analysis/tests/regression_har_date_paths.rs

diff --git a/crates/analysis/src/web_har.rs b/crates/analysis/src/web_har.rs
index 80b124a4..7f616344 100644
--- a/crates/analysis/src/web_har.rs
+++ b/crates/analysis/src/web_har.rs
@@ -195,11 +195,18 @@ pub(crate) fn is_uuid(s: &str) -> bool {
 
 fn is_iso_date(s: &str) -> bool {
     let b = s.as_bytes();
-    b.len() >= 10
-        && b.get(4) == Some(&b'-')
-        && b.get(7) == Some(&b'-')
-        && b.iter().take(4).all(u8::is_ascii_digit)
-        && b.get(5..7).is_some_and(|m| m.iter().all(u8::is_ascii_digit))
+    if b.len() != 10 || b.get(4) != Some(&b'-') || b.get(7) != Some(&b'-') {
+        return false;
+    }
+    let number = |start, end| s.get(start..end).filter(|v| v.bytes().all(|b| b.is_ascii_digit())).and_then(|v| v.parse::<u32>().ok());
+    let (Some(year), Some(month), Some(day)) = (number(0, 4), number(5, 7), number(8, 10)) else { return false };
+    let days = match month {
+        1 | 3 | 5 | 7 | 8 | 10 | 12 => 31,
+        4 | 6 | 9 | 11 => 30,
+        2 => 28 + u32::from(year.is_multiple_of(4) && (!year.is_multiple_of(100) || year.is_multiple_of(400))),
+        _ => return false,
+    };
+    (1..=days).contains(&day)
 }
 
 /// The outline of a JSON value: types only, never values.
diff --git a/crates/analysis/tests/regression_har_date_paths.rs b/crates/analysis/tests/regression_har_date_paths.rs
new file mode 100644
index 00000000..50962421
--- /dev/null
+++ b/crates/analysis/tests/regression_har_date_paths.rs
@@ -0,0 +1,12 @@
+use craft_anything_analysis::web_har::path_template;
+
+#[test]
+fn regression_only_calendar_dates_share_a_date_template() {
+    for date in ["2024-02-29", "2000-02-29", "2026-11-03", "2026-04-30"] {
+        assert_eq!(path_template(&format!("/reports/{date}")), "/reports/{date}");
+    }
+    for literal in ["2026-11-news", "2026-11-03-extra", "2026-02-29", "1900-02-29", "2026-13-01", "2026-00-01", "2026-04-31", "2026-01-00"] {
+        let path = format!("/reports/{literal}");
+        assert_eq!(path_template(&path), path);
+    }
+}