1 files changed, 56 insertions, 0 deletions
diff --git a/src/main.py b/src/main.py
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index 0000000..618cc5a
--- /dev/null
+++ b/src/main.py
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+# Manage book library.
+#
+# Required dependencies:
+#
+#   - python >= 3.11
+#   - requests
+#   - pillow
+#   - ebook-convert CLI (from calibre)
+
+import sys
+import os
+
+import library.command
+import view.command
+
+def print_help(title='Manage book library'):
+        print(f"""{title}
+
+- Print library metadata as json:
+
+    $ python {sys.argv[0]} library 
+
+- View books in web page:
+
+    $ python {sys.argv[0]} view browser-cmd
+
+Environment variables:
+
+    BOOK_LIBRARY: path to book library.""")
+
+def get_book_library():
+    path = os.getenv('BOOK_LIBRARY')
+    if path is None or not os.path.isdir(path):
+        print_help(title='BOOK_LIBRARY environment variable is required.')
+        exit(1)
+    else:
+        return path
+
+def main():
+    match sys.argv:
+        case [ _, 'library' ]:
+            book_library = get_book_library()
+            library.command.run(book_library)
+        case [ _, 'view', browser_cmd ]:
+            book_library = get_book_library()
+            view.command.run(book_library, browser_cmd)
+        case [ _, '--help' ]:
+            print_help()
+        case [ _, '-h' ]:
+            print_help()
+        case _:
+            print_help('Command not found.')
+            exit(1)
+
+if __name__ == "__main__":
+        main()