Initial commit

sql/delete_folder.sql

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+WITH RECURSIVE folder_hierarchy AS (
+    -- Start with the given directory
+    SELECT 
+        folder_id 
+    FROM 
+        folders 
+    WHERE 
+        folder_id = $1
+
+    UNION ALL
+
+    -- Recursively find all subdirectories
+    SELECT 
+        f.folder_id
+    FROM 
+        folders f
+    INNER JOIN 
+        folder_hierarchy fh ON f.parent_folder_id = fh.folder_id
+),
+deleted_files AS (
+    -- Delete the files and return their IDs
+    DELETE FROM 
+        files 
+    WHERE 
+        folder_id IN (SELECT folder_id FROM folder_hierarchy)
+    RETURNING file_id
+),
+deleted_folders AS (
+    -- Delete the directories
+    DELETE FROM 
+        folders 
+    WHERE 
+        folder_id IN (SELECT folder_id FROM folder_hierarchy)
+)
+-- Return the IDs of deleted files
+SELECT 
+    file_id 
+FROM 
+    deleted_files;