core: Add support for !nextBoot commands

vanilla_first_setup/utils/processor.py

@@ -30,11 +30,48 @@ class Processor:
     def run(log_path, pre_run, post_run, commands):
         commands = pre_run + commands + post_run
         out_run = ""
+        next_boot = []
+        next_boot_script_path = os.path.expanduser("~/.local/org.vanillaos.FirstSetup.nextBoot")
+        next_boot_autostart_path = os.path.expanduser("~/.config/autostart/org.vanillaos.FirstSetup.nextBoot.desktop")
         abroot_bin = shutil.which("abroot")
 
         logger.info("processing the following commands: \n%s" %
                     '\n'.join(commands))
 
+        # nextBoot commands are collected in ~/.local/org.vanillaos.FirstSetup.nextBoot
+        # and executed at the next boot by a desktop entry
+        for command in commands:
+            if command.startswith("!nextBoot"):
+                next_boot.append(command.replace("!nextBoot", ""))
+                continue
+
+        if len(next_boot) > 0:
+            with open(next_boot_script_path, "w") as f:
+                f.write("#!/bin/sh\n")
+                f.write("# This file was created by FirstSetup\n")
+                f.write("# Do not edit this file manually\n\n")
+
+                for command in next_boot:
+                    f.write(f"{command}\n")
+
+                f.flush()
+                f.close()
+
+            # setting the file executable
+            os.chmod(next_boot_script_path, 0o755)
+
+            # creating the desktop entry
+            with open(next_boot_autostart_path, "w") as f:
+                f.write("[Desktop Entry]\n")
+                f.write("Name=FirstSetup Next Boot\n")
+                f.write("Comment=Run FirstSetup commands at the next boot\n")
+                f.write("Exec=kgx -e bash -c 'sh %s'\n" % next_boot_script_path)
+                f.write("Terminal=false\n")
+                f.write("Type=Application\n")
+                f.write("X-GNOME-Autostart-enabled=true\n")
+                f.flush()
+                f.close()
+
         # generating a temporary file to store all the commands so we can
         # run them all at once
         with tempfile.NamedTemporaryFile(mode='w', delete=False) as f:
@@ -43,6 +80,9 @@ class Processor:
             f.write("# Do not edit this file manually\n\n")
 
             for command in commands:
+                if command.startswith("!nextBoot"):
+                    continue
+
                 if command.startswith("!noSudo"):
                     command = command.replace("!noSudo", "sudo -u $USER")