python3 minecraft installer

minecraft-installer.py

# License: You can do whatever you want with this script as long as you keep it open source :)

import os
import urllib.request
import shutil
import sys
import subprocess

launcher_folder = os.path.join(os.environ['HOME'], ".local/share/applications")
mc_folder = os.path.join(os.environ['HOME'], ".minecraft")
mc_jar = os.path.join(mc_folder, "minecraft.jar")
mc_net = "http://minecraft.net/download/minecraft.jar"
mc_desktop = os.path.join(mc_folder, "minecraft.desktop")
mc_desktop_content = """
[Desktop Entry]
Type=Application
Encoding=UTF-8
Name=Minecraft
Comment=Awesome Sandbox Game
Exec=java -jar {}
Icon={}
Categories=Game
Terminal=false
""".format(mc_jar, os.path.join(mc_folder, "icon.png"))


def install_minecraft():
    if os.path.isfile(mc_jar):
        print("Minecraft is already installed.\n")
    else:
        if not os.path.isdir(mc_folder):
            print("Creating", mc_folder, "folder...")
            os.mkdir(mc_folder)

        print("downloading minecraft.jar from minecraft.net...")
        urllib.request.urlretrieve(mc_net, mc_jar)
        urllib.request.urlretrieve("http://www.minecraft.net/favicon.png",
                                   os.path.join(mc_folder, "icon.png"))

        print("writing desktop shortcut...")
        with open(mc_desktop, 'w') as f:
            f.write(mc_desktop_content)
            f.close()
        os.chmod(mc_desktop, 0o775)

        print("Copying minecraft.desktop to Desktop...")
        shutil.copy(mc_desktop, os.path.join(os.environ['HOME'],
                                            "Arbeitsfläche/minecraft.desktop"))
        print("Copying minecraft.desktop to ~/.local/share/applications...")
        if not launcher_folder:
            os.makedirs(launcher_folder)
        else:
            shutil.copy(mc_desktop, os.path.join(launcher_folder,
                                                "minecraft.desktop"))

        print("Congratulations, Minecraft has been successfully \
downloaded and installed!\nHappy Mining!\n")


def uninstall_minecraft():
    confirm_uninstall = input("Are you sure that you want to uninstall Minecraft? (yes/no): ")
    if confirm_uninstall == "yes":
        if not os.path.isdir(mc_folder):
            print("Minecraft isn\'t installed\n")
        else:
            print("Removing Minecraft:", mc_folder)
            shutil.rmtree(mc_folder)
        print("Looking for launcher and desktop shortcuts...")
        if os.path.isfile(os.path.join(launcher_folder, "minecraft.desktop")):
            print("Removing launcher...")
            os.remove(os.path.join(launcher_folder, "minecraft.desktop"))
        if os.path.isfile(os.path.join(os.environ['HOME'],
                          "Arbeitsfläche/minecraft.desktop")):
            os.remove(os.path.join(os.environ['HOME'],
                      "Arbeitsfläche/minecraft.desktop"))
        print("You have successfully uninstalled Minecraft :(\n")
    else:
        print("Good choice! :)\n")


# #
# Troubleshooting
# #
def install_openjdk():
    # On my Computer Minecraft is running smoothly with OpenJDK6
    print("Installing OpenJDK6...")
    subprocess.call("sudo aptitude install openjdk-6-jre", shell=True)
    print("Finished!\n")


def openjdk_default_jre():
    print("Making OpenJDK6 the default java runtime environment")
    print("Don't worry if you see a lot of errors")
    subprocess.call("sudo update-java-alternatives -s java-6-sun", shell=True)
    print("Finished!\n")


def run(menu):
    category = "root"
    while True:
        main_menu = menu[category]
        for index, item in enumerate(main_menu, 1):
            print("{}  {}".format(index, item[0]))
        try:
            choice = int(input("Your choice: ")) - 1
            if 0 <= choice < len(main_menu):
                command = main_menu[choice][1]
            else:
                raise IndexError
        except (ValueError, IndexError):
            print("Only numbers between 1 and {} are allowed".format(len(menu)))

        if isinstance(command, str):
            category = command
        else:
            command()


menu = {
    "root": (
        ("Install Minecraft", install_minecraft),
        ("Uninstall Minecraft", uninstall_minecraft),
        ("Troublshooting", "submenu"),
        ("Exit", lambda: sys.exit(0))
    ),
    "submenu": (
        ("Install OpenJDK", install_openjdk),
        ("Use OpenJDK6 to run Minecraft", openjdk_default_jre),
        ("Back", "root"),
    )
}


if __name__ == "__main__":
    run(menu)