#!/usr/bin/python

import subprocess
import os

color = {
    'black': '\033[30m',
    'red': '\033[31m',
    'green': '\033[32m',
    'yellow': '\033[33m',
    'blue': '\033[34m',
    'pink': '\033[35m',
    'cyan': '\033[36m',
    'white': '\033[37m',
    'lblack': '\033[1;30m',
    'lred': '\033[1;31m',
    'lgreen': '\033[1;32m',
    'lyellow': '\033[1;33m',
    'lblue': '\033[1;34m',
    'lpink': '\033[1;35m',
    'lcyan': '\033[1;36m',
    'lwhite': '\033[1;37m',
    'reset': '\033[0m',
}

arch = subprocess.check_output("uname -m", shell=True).decode().strip()


kernel_modules = [
    "nbd",
]

softwares = {
    "doas": ["doas"],
    "gcc": ["gcc"],
    "nasm": ["nasm"],
    "rust": ["rustup", "rustc", "rustdoc", "rust-lldb"],
    "qemu": ["qemu-img", "qemu-nbd", "qemu-system-"+arch],
}


# 检查内核模块
lsmodoutput = subprocess.check_output("lsmod", shell=True).decode()
print("Checking kernel modules ...")
for mod in kernel_modules:
    mmod = "\n" + mod
    mmod += " "
    if mmod in lsmodoutput:
        print("  " + color['lpink'] + f"{mod}" + color['reset'] + " exists.")
    else:
        print("  " + color['lred'] + f"{mod}" + color['reset'] + " not found.")
        print("Kernel module " +
              color['lred'] + f"{mod}" + color['reset'] + " is not installed.")
        exit(-1)

# 检查软件依赖
pathsenv = os.environ.get("PATH").split(":")
for software, progs in softwares.items():
    print("Checking " + color['lcyan'] +
          f"{software}" + color['reset'] + " ...")
    for program in progs:
        exists = False
        for path in pathsenv:
            if os.path.isfile(os.path.join(path, program)):
                exists = True
                break
        if exists:
            print("  " + color['lyellow'] +
                  f"{program}" + color['reset'] + " existed.")
        else:
            print("  " + color['lred'] +
                  f"{program}" + color['reset'] + " not found.")

            print("Software " + color['lred'] + f"{software}" +
                  color['reset'] + " is not installed or completed.")
            exit(-2)

print("All dependencies are " +
      color['lgreen'] + "satisfied." + color['reset'])