From f50ba1050ad8dd342dcd719a867414ac6bc632a8 Mon Sep 17 00:00:00 2001
From: Blallo <blallo@autistici.org>
Date: Thu, 25 Aug 2022 13:12:22 +0200
Subject: [PATCH] Add config tooling

---
 devloop/config.py    |  6 ++++++
 latecomers/config.py | 50 ++++++++++++++++++++++++++++++++++++++++++++
 pyproject.toml       |  4 ++++
 3 files changed, 60 insertions(+)
 create mode 100644 devloop/config.py
 create mode 100644 latecomers/config.py

diff --git a/devloop/config.py b/devloop/config.py
new file mode 100644
index 0000000..c44422d
--- /dev/null
+++ b/devloop/config.py
@@ -0,0 +1,6 @@
+# -*- encoding: utf-8 -*-
+from latecomers.config import Config
+
+
+config = Config("./devloop/config.yaml")
+print(config)
diff --git a/latecomers/config.py b/latecomers/config.py
new file mode 100644
index 0000000..5f05950
--- /dev/null
+++ b/latecomers/config.py
@@ -0,0 +1,50 @@
+# -*- encoding: utf-8 -*-
+import logging
+import typing as T
+
+from latecomers.helpers import logit
+
+import yaml
+
+logger = logging.getLogger(__name__)
+
+
+def get_section(obj: T.Dict[T.Text, T.Any], key: T.Text) -> T.Any:
+    value = obj.get(key)
+    if value is None:
+        raise ValueError(f"Missing '{key}' value")
+
+    return value
+
+
+class Config(object):
+    smtp: T.Dict[T.Text, T.Any] = {}
+    to: T.List[T.Text] = []
+
+    def __init__(self, path: T.Text) -> None:
+        self.from_file(path)
+
+    @logit(logger)
+    def from_file(self, path: T.Text) -> None:
+        """
+        Parses the file and validates it.
+        """
+        with open(path) as f:
+            content = yaml.safe_load(f)
+
+        self.to = get_section(content, "to")
+
+        smtp = get_section(content, "smtp")
+        for key in [
+            "smtp_addr",
+            "smtp_port",
+            "smtp_starttls",
+            "smtp_user",
+            "smtp_pass",
+        ]:
+            self.smtp[key] = get_section(smtp, key)
+
+        self.smtp["smtp_from"] = smtp.get("smtp_from")
+
+    def __str__(self) -> T.Text:
+        return f"Config<smtp={self.smtp},to={self.to}>"
diff --git a/pyproject.toml b/pyproject.toml
index 9fa5bb8..6d2e9e7 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -11,6 +11,7 @@ dependencies = [
     "lxml",
     "pandas",
     "openpyxl",
+    "PyYAML",
 ]
 
 [tool.setuptools.packages.find]
@@ -30,6 +31,9 @@ requires = [
 ]
 build-backend = "setuptools.build_meta"
 
+[project.scripts]
+latecomers = "latecomers.main:cli"
+
 [tool.black]
 line-length = 88
 target_version = ['py36']