encapsulate the config parsing

README.md

@@ -8,6 +8,7 @@ The entry point is located in the [main file](./lib/main.py). It should not be m
 
 By default, the templates files are located in the [templates](./templates) directory.
 You can use template inheritance but not yet data injection.
+
 ### Configuration
 
 The configuration file ([config.json](./config.json)) is mandatory and should resemble:

lib/config.py

@@ -1,15 +1,29 @@
 import json
-from typing import TypedDict
+from dataclasses import dataclass
+
+NAME = "name"
+TEMPLATES = "templates"
+TEMPLATES_DIR = "templatesDir"
+STATIC_FILES_DIR = "staticFilesDir"
+OUT_DIR = "outDir"
 
 
-class Config(TypedDict):
+@dataclass(frozen=True)
+class Config:
     name: str
-    templatesDir: str
     templates: list[str]
-    staticFilesDir: list[str]
-    outDir: str
+    static_files_dir: list[str]
+    out_dir: str
+    templates_dir: str
 
 
 def load() -> Config:
     with open("config.json", "r") as f:
-        return json.loads(f.read())
+        raw_config = json.loads(f.read())
+        return Config(
+            name=raw_config[NAME],
+            templates=raw_config[TEMPLATES],
+            static_files_dir=raw_config[STATIC_FILES_DIR],
+            out_dir=raw_config.setdefault(OUT_DIR, "dist"),
+            templates_dir=raw_config.setdefault(TEMPLATES_DIR, "templates"),
+        )

lib/main.py

@@ -7,12 +7,6 @@ from loguru import logger
 from lib.config import load
 from lib.engine import FileSystemRenderer
 
-NAME = "name"
-TEMPLATES = "templates"
-TEMPLATES_DIR = "templatesDir"
-STATIC_FILES_DIR = "staticFilesDir"
-OUT_DIR = "outDir"
-
 
 def main():
     try:
@@ -22,23 +16,23 @@ def main():
         sys.exit()
 
     data = {}
-    destination_path = config[OUT_DIR]
-    fs = FileSystemRenderer(config.setdefault(TEMPLATES_DIR, TEMPLATES))
+    destination_path = config.out_dir
+    fs = FileSystemRenderer(config.templates_dir)
 
-    logger.info(f"🏁 Start building {config[NAME]}")
+    logger.info(f"🏁 Start building {config.name}")
 
     if os.path.exists(destination_path) and os.path.isdir(destination_path):
         shutil.rmtree(destination_path)
     os.mkdir(destination_path)
 
-    for template in config[TEMPLATES]:
+    for template in config.templates:
         logger.info(f"📃Render '{template}'")
         with open(os.path.join(destination_path, template), "w") as f:
             f.write(fs.render(template, data.get(template)))
 
     logger.info("⏩ Start copying staticfiles to build")
-    for folder in config[STATIC_FILES_DIR]:
-        shutil.copytree(folder, os.path.join(config[OUT_DIR], folder))
+    for folder in config.static_files_dir:
+        shutil.copytree(folder, os.path.join(config.out_dir, folder))
 
     logger.info("🎉 Done…")