directory_indexer/indexing/
monitor.rs

1use log::{info, warn};
2use std::path::PathBuf;
3use std::time::Duration;
4use tokio::time::interval;
5
6use crate::error::Result;
7
8pub struct FileMonitor {
9    watched_directories: Vec<PathBuf>,
10    check_interval: Duration,
11}
12
13impl FileMonitor {
14    pub fn new(watched_directories: Vec<PathBuf>, check_interval: Duration) -> Self {
15        Self {
16            watched_directories,
17            check_interval,
18        }
19    }
20
21    pub async fn start_monitoring<F>(&self, _on_change: F) -> Result<()>
22    where
23        F: Fn(FileChangeEvent) + Send + Sync + 'static,
24    {
25        let dir_count = self.watched_directories.len();
26        info!("Starting file monitoring for {dir_count} directories");
27
28        // TODO: Implement actual file watching
29        // This could use platform-specific file watching APIs:
30        // - inotify on Linux
31        // - FSEvents on macOS
32        // - ReadDirectoryChangesW on Windows
33        //
34        // For now, we'll implement a simple polling-based approach
35
36        let mut interval = interval(self.check_interval);
37
38        loop {
39            interval.tick().await;
40
41            // TODO: Check for file changes and call on_change callback
42            // This would involve:
43            // 1. Comparing current file states with stored states
44            // 2. Detecting new, modified, and deleted files
45            // 3. Calling the callback with appropriate events
46
47            warn!("File monitoring not yet implemented - this is a placeholder");
48
49            // For now, just log that we're checking
50            for dir in &self.watched_directories {
51                info!("Checking directory for changes: {dir:?}");
52            }
53        }
54    }
55
56    pub fn add_directory(&mut self, path: PathBuf) {
57        if !self.watched_directories.contains(&path) {
58            self.watched_directories.push(path);
59        }
60    }
61
62    pub fn remove_directory(&mut self, path: &PathBuf) {
63        self.watched_directories.retain(|p| p != path);
64    }
65}
66
67#[derive(Debug, Clone)]
68pub enum FileChangeEvent {
69    Created(PathBuf),
70    Modified(PathBuf),
71    Deleted(PathBuf),
72}
73
74impl FileChangeEvent {
75    pub fn path(&self) -> &PathBuf {
76        match self {
77            FileChangeEvent::Created(path) => path,
78            FileChangeEvent::Modified(path) => path,
79            FileChangeEvent::Deleted(path) => path,
80        }
81    }
82
83    pub fn event_type(&self) -> &'static str {
84        match self {
85            FileChangeEvent::Created(_) => "created",
86            FileChangeEvent::Modified(_) => "modified",
87            FileChangeEvent::Deleted(_) => "deleted",
88        }
89    }
90}
91
92#[cfg(test)]
93mod tests {
94    use super::*;
95    use std::time::Duration;
96
97    #[test]
98    fn test_file_monitor_creation() {
99        let directories = vec![PathBuf::from("/test/dir1"), PathBuf::from("/test/dir2")];
100        let interval = Duration::from_secs(5);
101
102        let monitor = FileMonitor::new(directories.clone(), interval);
103
104        assert_eq!(monitor.watched_directories, directories);
105        assert_eq!(monitor.check_interval, interval);
106    }
107
108    #[test]
109    fn test_file_monitor_add_directory() {
110        let initial_dirs = vec![PathBuf::from("/test/dir1")];
111        let mut monitor = FileMonitor::new(initial_dirs, Duration::from_secs(1));
112
113        let new_dir = PathBuf::from("/test/dir2");
114        monitor.add_directory(new_dir.clone());
115
116        assert_eq!(monitor.watched_directories.len(), 2);
117        assert!(monitor.watched_directories.contains(&new_dir));
118    }
119
120    #[test]
121    fn test_file_monitor_add_duplicate_directory() {
122        let dir = PathBuf::from("/test/dir");
123        let initial_dirs = vec![dir.clone()];
124        let mut monitor = FileMonitor::new(initial_dirs, Duration::from_secs(1));
125
126        // Adding the same directory should not create duplicates
127        monitor.add_directory(dir.clone());
128
129        assert_eq!(monitor.watched_directories.len(), 1);
130        assert_eq!(monitor.watched_directories[0], dir);
131    }
132
133    #[test]
134    fn test_file_monitor_remove_directory() {
135        let dir1 = PathBuf::from("/test/dir1");
136        let dir2 = PathBuf::from("/test/dir2");
137        let initial_dirs = vec![dir1.clone(), dir2.clone()];
138        let mut monitor = FileMonitor::new(initial_dirs, Duration::from_secs(1));
139
140        monitor.remove_directory(&dir1);
141
142        assert_eq!(monitor.watched_directories.len(), 1);
143        assert!(!monitor.watched_directories.contains(&dir1));
144        assert!(monitor.watched_directories.contains(&dir2));
145    }
146
147    #[test]
148    fn test_file_monitor_remove_nonexistent_directory() {
149        let dir1 = PathBuf::from("/test/dir1");
150        let initial_dirs = vec![dir1.clone()];
151        let mut monitor = FileMonitor::new(initial_dirs, Duration::from_secs(1));
152
153        let nonexistent = PathBuf::from("/test/nonexistent");
154        monitor.remove_directory(&nonexistent);
155
156        // Should still have the original directory
157        assert_eq!(monitor.watched_directories.len(), 1);
158        assert!(monitor.watched_directories.contains(&dir1));
159    }
160
161    #[test]
162    fn test_file_change_event_created() {
163        let path = PathBuf::from("/test/file.txt");
164        let event = FileChangeEvent::Created(path.clone());
165
166        assert_eq!(event.path(), &path);
167        assert_eq!(event.event_type(), "created");
168    }
169
170    #[test]
171    fn test_file_change_event_modified() {
172        let path = PathBuf::from("/test/file.txt");
173        let event = FileChangeEvent::Modified(path.clone());
174
175        assert_eq!(event.path(), &path);
176        assert_eq!(event.event_type(), "modified");
177    }
178
179    #[test]
180    fn test_file_change_event_deleted() {
181        let path = PathBuf::from("/test/file.txt");
182        let event = FileChangeEvent::Deleted(path.clone());
183
184        assert_eq!(event.path(), &path);
185        assert_eq!(event.event_type(), "deleted");
186    }
187
188    #[test]
189    fn test_file_change_event_clone() {
190        let path = PathBuf::from("/test/file.txt");
191        let event = FileChangeEvent::Created(path.clone());
192        let cloned = event.clone();
193
194        assert_eq!(event.path(), cloned.path());
195        assert_eq!(event.event_type(), cloned.event_type());
196    }
197
198    #[test]
199    fn test_file_change_event_debug() {
200        let path = PathBuf::from("/test/file.txt");
201        let event = FileChangeEvent::Modified(path);
202
203        let debug_output = format!("{event:?}");
204        assert!(debug_output.contains("Modified"));
205        assert!(debug_output.contains("file.txt"));
206    }
207
208    #[test]
209    fn test_empty_monitor() {
210        let monitor = FileMonitor::new(vec![], Duration::from_millis(100));
211
212        assert!(monitor.watched_directories.is_empty());
213        assert_eq!(monitor.check_interval, Duration::from_millis(100));
214    }
215
216    #[test]
217    fn test_monitor_configuration_variations() {
218        // Test different interval configurations
219        let configs = vec![
220            Duration::from_millis(100),
221            Duration::from_secs(1),
222            Duration::from_secs(60),
223        ];
224
225        for interval in configs {
226            let monitor = FileMonitor::new(vec![], interval);
227            assert_eq!(monitor.check_interval, interval);
228        }
229    }
230
231    #[test]
232    fn test_path_operations() {
233        let mut monitor = FileMonitor::new(vec![], Duration::from_secs(1));
234
235        let paths = vec![
236            PathBuf::from("/home/user/documents"),
237            PathBuf::from("/var/log"),
238            PathBuf::from("/tmp/test"),
239        ];
240
241        // Add multiple paths
242        for path in &paths {
243            monitor.add_directory(path.clone());
244        }
245
246        assert_eq!(monitor.watched_directories.len(), 3);
247
248        // Remove one path
249        monitor.remove_directory(&paths[1]);
250        assert_eq!(monitor.watched_directories.len(), 2);
251        assert!(!monitor.watched_directories.contains(&paths[1]));
252
253        // Verify remaining paths
254        assert!(monitor.watched_directories.contains(&paths[0]));
255        assert!(monitor.watched_directories.contains(&paths[2]));
256    }
257
258    #[test]
259    fn test_file_change_event_pattern_matching() {
260        let path = PathBuf::from("/test/file.txt");
261
262        let events = vec![
263            FileChangeEvent::Created(path.clone()),
264            FileChangeEvent::Modified(path.clone()),
265            FileChangeEvent::Deleted(path.clone()),
266        ];
267
268        for event in events {
269            match &event {
270                FileChangeEvent::Created(p) => {
271                    assert_eq!(p, &path);
272                    assert_eq!(event.event_type(), "created");
273                }
274                FileChangeEvent::Modified(p) => {
275                    assert_eq!(p, &path);
276                    assert_eq!(event.event_type(), "modified");
277                }
278                FileChangeEvent::Deleted(p) => {
279                    assert_eq!(p, &path);
280                    assert_eq!(event.event_type(), "deleted");
281                }
282            }
283        }
284    }
285
286    // Mock test for the monitoring functionality (since actual monitoring is not implemented)
287    #[tokio::test]
288    async fn test_monitoring_placeholder() {
289        let monitor = FileMonitor::new(vec![PathBuf::from("/test")], Duration::from_millis(10));
290
291        // Test that the monitoring function exists and can be called
292        // We'll use a timeout to avoid infinite loop in the placeholder implementation
293        let result = tokio::time::timeout(
294            Duration::from_millis(50),
295            monitor.start_monitoring(|_event| {
296                // Mock callback - this won't be called in the placeholder implementation
297            }),
298        )
299        .await;
300
301        // Should timeout because the placeholder implementation runs forever
302        assert!(result.is_err());
303    }
304
305    #[test]
306    fn test_monitor_with_relative_paths() {
307        let relative_paths = vec![
308            PathBuf::from("./documents"),
309            PathBuf::from("../parent"),
310            PathBuf::from("subdir/nested"),
311        ];
312
313        let monitor = FileMonitor::new(relative_paths.clone(), Duration::from_secs(1));
314
315        assert_eq!(monitor.watched_directories, relative_paths);
316    }
317
318    #[test]
319    fn test_monitor_with_unicode_paths() {
320        let unicode_paths = vec![
321            PathBuf::from("/test/файл.txt"),
322            PathBuf::from("/test/文件.txt"),
323            PathBuf::from("/test/🦀.rs"),
324        ];
325
326        let monitor = FileMonitor::new(unicode_paths.clone(), Duration::from_secs(1));
327
328        assert_eq!(monitor.watched_directories, unicode_paths);
329    }
330}
directory_indexer/indexing/monitor.rs

directory_indexer/indexing/
monitor.rs
