Changed main.py location

scripts/main.py

@@ -0,0 +1,43 @@
+# System libraries first...
+import os
+import sys
+from ttkbootstrap.dialogs import Messagebox
+# ... then installed libraries...
+# ... and eventually local modules.
+from spectratools.spectraio import create_parser, check_file_format
+from spectratools.spectraplot import SpectraPlotter
+
+def main():
+    # Parsing arguments from parser
+    parser = create_parser()
+    args = parser.parse_args()
+
+    # Checking file format
+    if not args.filepaths:
+        filepaths = []
+        app = SpectraPlotter(filepaths, nbins=args.nbins, treename=args.treename)
+        app.mainloop()
+    else:
+        for file in args.filepaths:
+            opened_files = []
+            if not check_file_format(file):
+                Messagebox.show_error(message=f"{file} format not supported.")
+                continue
+            else:
+                opened_files.append(file)
+            if not opened_files:
+                Messagebox.show_error(message="No valid file to show.")
+                sys.exit(1)
+
+        # Filling the file list obtained from parser
+        for file in args.filepaths:
+            try:
+                app = SpectraPlotter(opened_files, nbins=args.nbins, treename=args.treename)
+                app.mainloop()
+            except FileNotFoundError:
+                Messagebox.show_warning(message=f"File {os.path.basename(file)} not found.")
+            except ValueError:
+                Messagebox.show_error(message=f"File format not supported.")
+
+if __name__ == "__main__":
+    main()