Add trivial frontend

requirements.txt

@@ -1 +1,2 @@
 alembic
+sqlalchemy

src/pyelephant.py

@@ -0,0 +1,75 @@
+#!/usr/bin/env python3
+
+import sqlalchemy as sa
+import sqlalchemy.ext.automap
+
+###############################################################################
+Base = sa.ext.automap.automap_base()
+Task = None
+
+
+###############################################################################
+def add(session: sa.orm.Session, title: str):
+    session.add(Task(title=title))
+    session.commit()
+
+
+# -----------------------------------------------------------------------------
+def rm(session: sa.orm.Session, index: int):
+    session.query(Task.id == index).delete()
+    session.commit()
+
+
+# -----------------------------------------------------------------------------
+def ls(session: sa.orm.Session):
+    for i in session.query(Task):
+        print(i.id, i.title)
+
+
+###############################################################################
+if __name__ == '__main__':
+    import sys
+
+    def main():
+        import argparse
+        import os
+
+        actions = {
+            'add': add,
+            'rm': rm,
+            'ls': ls
+        }
+
+        parser = argparse.ArgumentParser()
+        subparsers = parser.add_subparsers()
+
+        add_parser = subparsers.add_parser('add')
+        add_parser.add_argument("title", type=str)
+        add_parser.set_defaults(func=add)
+
+        rm_parser = subparsers.add_parser('rm')
+        rm_parser.add_argument("index", type=int)
+        rm_parser.set_defaults(func=rm)
+
+        ls_parser = subparsers.add_parser('ls')
+        ls_parser.set_defaults(func=ls)
+
+        args = parser.parse_args()
+
+        dirname = os.path.dirname(os.path.realpath(__file__))
+        dbpath = os.path.realpath(os.path.join(dirname, '..', 'db', 'data.sqlite'))
+        db = sa.create_engine(f"sqlite:///{dbpath}")
+
+        Base.prepare(db, reflect=True)
+
+        global Task
+        Task = Base.classes.tasks
+
+        session = sa.orm.Session(db)
+        args = vars(args)
+        func = args['func']
+        del args['func']
+        func(session, **args)
+        return 0
+
+    sys.exit(main())