Expose window evidence snapshots

src/window/linux.rs

@@ -1,10 +1,28 @@
+use super::WindowSnapshot;
+use crate::domain::EvidenceHealth;
 use regex::Regex;
 use std::{process::Command, process::Output, str};
 
 pub fn get_title_clean() -> String {
-    let title = get_window_info().title;
+    get_snapshot().title
+}
+
+pub fn get_snapshot() -> WindowSnapshot {
+    let window_info = get_window_info();
     let re = Regex::new(r"-?\d+([:.]\d+)+%?").unwrap();
-    re.replace_all(&title, "").to_string()
+    let title = re.replace_all(&window_info.title, "").to_string();
+    let class = (window_info.class != "none").then_some(window_info.class);
+    let health = if window_info.wid.is_empty() {
+        EvidenceHealth::Unavailable("xdotool active window unavailable".to_string())
+    } else {
+        EvidenceHealth::Available
+    };
+
+    WindowSnapshot {
+        title,
+        class,
+        health,
+    }
 }
 
 pub fn minimize_other(title: &str) {
@@ -16,7 +34,7 @@ pub fn minimize_other(title: &str) {
 
 struct WindowInfo {
     title: String,
-    _class: String,
+    class: String,
     wid: String,
 }
 
@@ -46,7 +64,7 @@ fn run(cmd: &str) -> Option<String> {
 fn get_window_info() -> WindowInfo {
     let none = WindowInfo {
         title: "none".to_string(),
-        _class: "none".to_string(),
+        class: "none".to_string(),
         wid: "".to_string(),
     };
 
@@ -62,9 +80,5 @@ fn get_window_info() -> WindowInfo {
         return none;
     };
 
-    WindowInfo {
+    WindowInfo { title, class, wid }
-        title,
-        _class: class,
-        wid,
-    }
 }

src/window/mod.rs

@@ -1,3 +1,22 @@
+use crate::domain::EvidenceHealth;
+
+#[derive(Clone, Debug, PartialEq, Eq)]
+pub struct WindowSnapshot {
+    pub title: String,
+    pub class: Option<String>,
+    pub health: EvidenceHealth,
+}
+
+impl WindowSnapshot {
+    pub fn unavailable(reason: impl Into<String>) -> Self {
+        Self {
+            title: "none".to_string(),
+            class: None,
+            health: EvidenceHealth::Unavailable(reason.into()),
+        }
+    }
+}
+
 #[cfg(target_os = "windows")]
 mod windows;
 #[cfg(target_os = "windows")]
@@ -7,3 +26,20 @@ pub use windows::*;
 mod linux;
 #[cfg(target_os = "linux")]
 pub use linux::*;
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn unavailable_snapshot_records_reason_without_evidence() {
+        assert_eq!(
+            WindowSnapshot::unavailable("no active window"),
+            WindowSnapshot {
+                title: "none".to_string(),
+                class: None,
+                health: EvidenceHealth::Unavailable("no active window".to_string()),
+            }
+        );
+    }
+}

src/window/windows.rs

@@ -1,12 +1,24 @@
+use super::WindowSnapshot;
+use crate::domain::EvidenceHealth;
 use regex::Regex;
 use std::{ffi::OsString, os::windows::ffi::OsStringExt};
 use winapi::shared::windef::HWND;
 use winapi::um::winuser::{GetForegroundWindow, GetWindowTextW, ShowWindow, SW_MINIMIZE};
 
 pub fn get_title_clean() -> String {
+    get_snapshot().title
+}
+
+pub fn get_snapshot() -> WindowSnapshot {
     let title = get_window_info().title;
     let re = Regex::new(r"-?\d+([:.]\d+)+%?").unwrap();
-    re.replace_all(&title, "").to_string()
+    WindowSnapshot {
+        title: re.replace_all(&title, "").to_string(),
+        class: None,
+        health: EvidenceHealth::Degraded(
+            "window class unavailable on current Windows adapter".to_string(),
+        ),
+    }
 }
 
 pub fn minimize_other(title: &str) {