1 files changed, 57 insertions, 0 deletions
diff --git a/organize_todo.py b/organize_todo.py
new file mode 100644
index 0000000..95460ea
--- /dev/null
+++ b/organize_todo.py
@@ -0,0 +1,57 @@
+from enum import Enum
+from typing import List
+
+
+TODO_FILE_NAME = "TODO.md"
+
+TODO_LINE_START_COMPLETED = "- [x] "
+TODO_LINE_START_UNCOMPLETED = "- [ ] "
+
+
+class PrevItemState(Enum):
+    COMPLETED = 0
+    UNCOMPLETED = 1
+    UNDETERMINED = 2
+
+
+def main():
+    with open(TODO_FILE_NAME) as todo_file:
+        todo_lines = todo_file.readlines()
+
+    completed: List[str] = []
+    uncompleted: List[str] = []
+
+    prev_item_state = PrevItemState.UNDETERMINED
+
+    for [index, line] in enumerate(todo_lines):
+        if len(line) == 0:
+            continue
+
+        if line.startswith(TODO_LINE_START_COMPLETED):
+            completed.append(line)
+            prev_item_state = PrevItemState.COMPLETED
+        elif line.startswith(TODO_LINE_START_UNCOMPLETED):
+            uncompleted.append(line)
+            prev_item_state = PrevItemState.UNCOMPLETED
+        elif line[0].isspace():
+            if prev_item_state == PrevItemState.COMPLETED:
+                completed.append(line)
+            elif prev_item_state == PrevItemState.UNCOMPLETED:
+                uncompleted.append(line)
+            elif prev_item_state == PrevItemState.UNDETERMINED:
+                print(
+                    f"Error: todo line {index + 1} starts with whitespace but there is "
+                    "no previous item"
+                )
+                exit(1)
+        else:
+            print(f"Error: todo line {index + 1} does not have correct syntax")
+            exit(1)
+
+    with open(TODO_FILE_NAME, "w") as todo_file:
+        todo_file.writelines(uncompleted)
+        todo_file.writelines(completed)
+
+
+if __name__ == "__main__":
+    main()