"""
The shell for PyNVOS
Version: 0.2.0.0399
"""
import importlib
import os
import cmd
import shutil

# from ..sys.krnl import Kernel
print(__name__)
class shell(cmd.Cmd):
    jail_mgr = importlib.import_module(".jail_mgr", "vfs.sys")
    jailmgr = jail_mgr.PyJail()
    kver = jailmgr.kver()
    intro = f"Shell started, PyNVOS {kver}"
    prompt = "shell-0.2$ "
    file = None

    def do_cd(self, args):
        """Changes directory"""
        args = shell.jailmgr.fs(args)
        os.chdir(args)

    def do_exec(self, args):
        """Allows you to execute a file"""
        # Apps in /bin should be allowed to launch without first adding /bin/ or ./, just the name of the executable
        # So for ledit it should be just 'ledit' and not /bin/ledit.py or ./ledit.py
        bins_in_bin = os.listdir(self.jailmgr.fs("/bin"))
        apps_strip = []
        for apps in bins_in_bin:
            if apps.endswith(".py"):
                apps_strip.append(apps.strip(".py"))
        if args in apps_strip:
            shell.jailmgr.run_program(f"/bin/{args}.py")
        else:
            shell.jailmgr.run_program(args)

    def do_ls(self, none):
        """Lists the content of a directory"""
        os.listdir(os.getcwd())

    def do_pkg(self, pkg):
        """Downloads packages over the internet."""
        self.jailmgr.netsock(f"https://pkg.novacow.ch/repo/{kver}/meta/{pkg}.pmd", 443, "PKG", "<null>")
        shutil.copy(self.jailmgr.fs(f"/usr/netsock/cache/{pkg}.pmd"), self.jailmgr.fs(f"/usr/pkg/metacache/"))
        with open(self.jailmgr.fs(f"/usr/pkgs/metacache/{pkg}.pmd"), "r") as f:
            package_meta = f.read()
            f.close()
        print(package_meta)
        y_n_confirmation = input("Do you want to install this package? [y/N] ")
        if y_n_confirmation.lower() != "y":
            print("Aborted.")
            return
        self.jailmgr.netsock(f"https://pkg.novacow.ch/repo/{kver}/main/static/binary/{pkg}.py", 443, "PKG", "<null>")
        shutil.copy(self.jailmgr.fs(f"/usr/netsock/cache/{pkg}.py"), self.jailmgr.fs(f"/usr/bin/"))

    def postloop(self):
        pass


if __name__ == '<run_path>':
    shell().cmdloop()
if __name__ == '__main__':
    print("The shell can't be ran as a standalone program and must be ran in conjunction with the jail manager.")
    input("Press Enter to continue...")
    exit(-1)