Load modified time and extract creation of entry

src/main.c

@@ -28,6 +28,7 @@ static enum MHD_Result send_response(struct MHD_Connection *connection, int stat
 typedef struct {
     bool is_dir;
     SV name;
+    struct tm modified_at;
 } Library_Entry;
 
 typedef struct {
@@ -46,6 +47,34 @@ int compare_library_entries(const void *a, const void *b) {
     return noh_sv_compare(lea.name, leb.name);
 }
 
+/**
+ * Creates a Library entry from a dirent structure.
+ */
+bool create_entry(struct dirent *dir_entry, const char *parent_path, Library_Entry *result) {
+    SV name = sv(dir_entry->d_name);
+    int type = dir_entry->d_type;
+
+    // Check if the entry is relevant.
+    if (type != DT_DIR && type != DT_REG) return false;
+    if (noh_sv_eq(name, sv(".")) || noh_sv_eq(name, sv(".."))) return false;
+    if (type == DT_REG && !noh_sv_ends_with_ci(name, sv(".epub"))) return false;
+
+    // Allocate and populate library entry.
+    result->is_dir = type == DT_DIR;
+    result->name = noh_sv_copy_cstr(&temp, dir_entry->d_name);
+
+    // Load modified time.
+    struct stat attr;
+    if (stat(noh_arena_sprintf(&temp, "%s/"Nsv_Fmt, parent_path, Nsv_Arg(name)), &attr) == 0) {
+        struct tm *timeinfo = localtime(&attr.st_mtime);
+        result->modified_at = *timeinfo;
+    } else {
+        result->modified_at = (struct tm){0};
+    }
+
+    return true;
+}
+
 static enum MHD_Result handle_opds(struct MHD_Connection *connection, SV url, SV base_path, SV username) {
     Noh_String fs_path = {0};
     noh_string_append_sv(&fs_path, base_path);
@@ -64,32 +93,23 @@ static enum MHD_Result handle_opds(struct MHD_Connection *connection, SV url, SV
         noh_arena_save(&temp);
         struct dirent *entry = noh_arena_alloc(&temp, sizeof(struct dirent));
         while ((entry = readdir(dir)) != NULL) {
-            SV name = sv(entry->d_name);
+            Library_Entry result = {0};
-            int type = entry->d_type;
+            if (create_entry(entry, fs_path.elems, &result)) noh_da_append(&list, result);
-
-            if (type != DT_DIR && type != DT_REG) continue;
-            if (noh_sv_eq(name, sv(".")) || noh_sv_eq(name, sv(".."))) continue;
-            if (type == DT_REG && !noh_sv_ends_with_ci(name, sv(".epub"))) continue;
-
-            Library_Entry le = {
-                .is_dir = type == DT_DIR,
-                .name = noh_sv_copy_cstr(&temp, entry->d_name),
-            };
-            noh_da_append(&list, le);
         }
 
         // Sort entries, folders first, then by name.
-        if (list.count > 1)
+        if (list.count > 1) qsort(list.elems, list.count, sizeof(list.elems[0]), compare_library_entries);
-            qsort(list.elems, list.count, sizeof(list.elems[0]), compare_library_entries);
 
         // Print sorted entries.
         Noh_String response = {0};
+        char *time_buffer = noh_arena_alloc(&temp, 80);
         for (size_t i = 0; i < list.count; i++) {
             Library_Entry *le = &list.elems[i];
+            strftime(time_buffer, 80, "%Y-%m-%d %H:%M:%S", &le->modified_at);
             noh_string_append_cstr(&response,
                 noh_arena_sprintf(
                     &temp,
-                     "Entry: %s '"Nsv_Fmt"'.\n", le->is_dir ? "Dir" : "File", Nsv_Arg(le->name)));
+                     "Entry: %s '"Nsv_Fmt"' (modified at %s).\n", le->is_dir ? "Dir" : "File", Nsv_Arg(le->name), time_buffer));
         }
 
         return send_response(connection, 200, noh_sv_from_string(&response));