diff --git a/.gitignore b/.gitignore
index 6fe11b1..e407f6c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,10 @@
-/learn
+# hydra outputs
+outputs
 
+# Created by https://www.toptal.com/developers/gitignore/api/python
+# Edit at https://www.toptal.com/developers/gitignore?templates=python
+
+### Python ###
 # Byte-compiled / optimized / DLL files
 __pycache__/
 *.py[cod]
@@ -22,7 +27,6 @@
 sdist/
 var/
 wheels/
-pip-wheel-metadata/
 share/python-wheels/
 *.egg-info/
 .installed.cfg
@@ -52,6 +56,7 @@
 *.py,cover
 .hypothesis/
 .pytest_cache/
+cover/
 
 # Translations
 *.mo
@@ -74,6 +79,7 @@
 docs/_build/
 
 # PyBuilder
+.pybuilder/
 target/
 
 # Jupyter Notebook
@@ -84,7 +90,9 @@
 ipython_config.py
 
 # pyenv
-.python-version
+#   For a library or package, you might want to ignore these files since the code is
+#   intended to run in multiple environments; otherwise, check them in:
+# .python-version
 
 # pipenv
 #   According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
@@ -93,7 +101,22 @@
 #   install all needed dependencies.
 #Pipfile.lock
 
-# PEP 582; used by e.g. github.com/David-OConnor/pyflow
+# poetry
+#   Similar to Pipfile.lock, it is generally recommended to include poetry.lock in version control.
+#   This is especially recommended for binary packages to ensure reproducibility, and is more
+#   commonly ignored for libraries.
+#   https://python-poetry.org/docs/basic-usage/#commit-your-poetrylock-file-to-version-control
+#poetry.lock
+
+# pdm
+#   Similar to Pipfile.lock, it is generally recommended to include pdm.lock in version control.
+#pdm.lock
+#   pdm stores project-wide configurations in .pdm.toml, but it is recommended to not include it
+#   in version control.
+#   https://pdm.fming.dev/#use-with-ide
+.pdm.toml
+
+# PEP 582; used by e.g. github.com/David-OConnor/pyflow and github.com/pdm-project/pdm
 __pypackages__/
 
 # Celery stuff
@@ -129,3 +152,18 @@
 
 # Pyre type checker
 .pyre/
+
+# pytype static type analyzer
+.pytype/
+
+# Cython debug symbols
+cython_debug/
+
+# PyCharm
+#  JetBrains specific template is maintained in a separate JetBrains.gitignore that can
+#  be found at https://github.com/github/gitignore/blob/main/Global/JetBrains.gitignore
+#  and can be added to the global gitignore or merged into this file.  For a more nuclear
+#  option (not recommended) you can uncomment the following to ignore the entire idea folder.
+#.idea/
+
+# End of https://www.toptal.com/developers/gitignore/api/python
diff --git a/identity.yaml b/identity.yaml
new file mode 100644
index 0000000..cc675f1
--- /dev/null
+++ b/identity.yaml
@@ -0,0 +1,9 @@
+username: "*******"
+password: "**************"
+prefix: "/home/liblaf/Onedrive/thu-course/"
+file_size_limit: null
+sync_docs: true
+sync_work: true
+sync_submit: true
+semesters:
+  - "2022-2023-1"
diff --git a/main.py b/main.py
index c0df3a2..2c97002 100644
--- a/main.py
+++ b/main.py
@@ -1,70 +1,23 @@
-import argparse
-
+import hydra
+import omegaconf
 import tqdm
 
 from downloader import Downloader
 
 
-parser = argparse.ArgumentParser(
-    add_help="Automatically download files from THU Web Learning."
-)
-parser.add_argument("--username", required=True)
-parser.add_argument("--password", required=True)
-parser.add_argument(
-    "--semesters",
-    nargs="+",
-    default=None,
-    required=False,
-    help="semesters to be synced. If you want to sync all semesters, do not pass this argument",
-)
-parser.add_argument(
-    "--prefix",
-    default="thu-learn",
-    required=False,
-    help='location to save downloaded files, default to "learn/"',
-)
-parser.add_argument(
-    "--file_size_limit",
-    default=None,
-    type=float,
-    required=False,
-    help="(unit: MB) files exceed limit will not be downloaded",
-)
-parser.add_argument(
-    "--no_sync_docs",
-    action="store_true",
-    default=False,
-    required=False,
-    help="pass this argument to skip syncing files",
-)
-parser.add_argument(
-    "--no_sync_work",
-    action="store_true",
-    default=False,
-    required=False,
-    help="pass this argument to skip syncing homework",
-)
-parser.add_argument(
-    "--no_sync_submit",
-    action="store_true",
-    default=False,
-    required=False,
-    help="pass this argument to skip syncing your submission & grade and everything personal",
-)
-
-
-def main(args: argparse.Namespace):
+@hydra.main(config_path=".", config_name="identity.yaml", version_base="1.2")
+def main(cfg: omegaconf.DictConfig):
     downloader = Downloader(
-        username=args.username,
-        password=args.password,
-        prefix=args.prefix,
-        file_size_limit=args.file_size_limit,
-        sync_docs=(not args.no_sync_docs),
-        sync_work=(not args.no_sync_work),
-        sync_submit=(not args.no_sync_submit),
+        username=cfg["username"],
+        password=cfg["password"],
+        prefix=cfg["prefix"],
+        file_size_limit=cfg["file_size_limit"],
+        sync_docs=cfg["sync_docs"],
+        sync_work=cfg["sync_work"],
+        sync_submit=cfg["sync_submit"],
     )
     semester_id_list: list[str] = downloader.helper.get_semester_id_list()
-    semesters: list[str] = args.semesters if args.semesters else semester_id_list
+    semesters: list[str] = cfg["semesters"] if cfg["semesters"] else semester_id_list
     for semester in tqdm.tqdm(
         iterable=semesters,
         desc="semesters",
@@ -79,5 +32,4 @@
 
 
 if __name__ == "__main__":
-    args = parser.parse_args()
-    main(args)
+    main()
diff --git a/requirements.txt b/requirements.txt
index cf6ad45..7bd260f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,6 @@
 beautifulsoup4~=4.11.1
+hydra-core~=1.2.0
+omegaconf~=2.2.3
 requests~=2.28.1
 tqdm~=4.64.1
 python-slugify~=6.1.2