lists: add list delete/clear

lists

@@ -15,25 +15,18 @@ if not STORAGE_PATH.exists():
 ALLOWED_LIST_NAME_CHARS = string.ascii_lowercase + string.digits + "_"
 
 
-def get_user_dir():
-    user_dir = STORAGE_PATH / scgi.tls_client_hash[7:]
-    if not user_dir.is_dir():
-        user_dir.mkdir()
-    return user_dir
-
-
 def show_lists():
-    user_dir = get_user_dir()
+    user_dir = scgi.get_user_dir()
     scgi.header(20, "text/gemini")
     print("# Lists")
     for child in user_dir.iterdir():
         if child.is_file():
-            print(f"=> {scgi.script_name}/{child.name} 📄 {child.name}")
-    print(f"=> {scgi.script_name}/_/create ✨ Create a new list")
+            scgi.link(f"/{child.name}", f"📄 {child.name}")
+    scgi.link("/_/create", "✨ Create a new list")
 
 
 def show_list(list_name):
-    list_file = get_user_dir() / list_name
+    list_file = scgi.get_user_dir() / list_name
     try:
         with open(list_file, "rt") as f:
             content = f.read()
@@ -43,19 +36,29 @@ def show_list(list_name):
         scgi.header(20, "text/gemini")
         print("# " + list_name)
         print(content)
-        print(f"=> {scgi.script_name}/{list_name}/add Append item")
-        print(f"=> {scgi.script_name}/{list_name}/pop Pop first item")
+        scgi.link(f"/{list_name}/add", "Append item")
+        scgi.link(f"/{list_name}/pop", "Pop first item")
+        scgi.link(f"/{list_name}/clear", "Clear list")
+        scgi.link(f"/{list_name}/delete", "Delete list")
 
 
 def process_action(list_name, action):
-    if list_name == "_" and action == "create":
-        process_creation()
-    elif action == "add":
-        process_add(list_name)
-    elif action == "pop":
-        process_pop(list_name)
+    if list_name == "_":
+        if action == "create":
+            process_creation()
+        else:
+            scgi.not_found()
     else:
-        scgi.not_found()
+        if action == "add":
+            process_add(list_name)
+        elif action == "pop":
+            process_pop(list_name)
+        elif action == "clear":
+            process_clear(list_name)
+        elif action == "delete":
+            process_delete(list_name)
+        else:
+            scgi.not_found()
 
 
 def process_creation():
@@ -66,7 +69,7 @@ def process_creation():
         for char in new_list_name:
             if char not in ALLOWED_LIST_NAME_CHARS:
                 scgi.temp_error(f"Illegal character in list name: {char}")
-        list_file = get_user_dir() / new_list_name
+        list_file = scgi.get_user_dir() / new_list_name
         list_file.touch(mode=0o660)
         redirect_to_list(new_list_name)
 
@@ -78,7 +81,7 @@ def process_add(list_name):
         if "\n" in item:
             scgi.temp_error("No new line allowed in item.")
         line = f"* {item}\n"
-        list_file = get_user_dir() / list_name
+        list_file = scgi.get_user_dir() / list_name
         try:
             with open(list_file, "at") as f:
                 f.write(line)
@@ -89,11 +92,37 @@ def process_add(list_name):
 
 
 def process_pop(list_name):
-    list_file = get_user_dir() / list_name
+    list_file = scgi.get_user_dir() / list_name
     subprocess.run(["sed", "-i", "1d", str(list_file)])
     redirect_to_list(list_name)
 
 
+def process_clear(list_name):
+    if scgi.query_string_dec:
+        if scgi.query_string_dec != list_name:
+            redirect_to_list(list_name)
+        list_file = scgi.get_user_dir() / list_name
+        try:
+            with open(list_file, "wt") as f:
+                f.truncate()
+        except OSError:
+            scgi.temp_error()
+        redirect_to_list(list_name)
+    else:
+        scgi.require_input("Type the list name to confirm its clearing.")
+
+
+def process_delete(list_name):
+    if scgi.query_string_dec:
+        if scgi.query_string_dec != list_name:
+            redirect_to_list(list_name)
+        list_file = scgi.get_user_dir() / list_name
+        list_file.unlink()
+        scgi.redirect_temp(scgi.script_name)
+    else:
+        scgi.require_input("Type the list name to confirm its deletion.")
+
+
 def redirect_to_list(list_name):
     scgi.redirect_temp(scgi.script_name + "/" + list_name)