import os
import sys

gcc = '/i686_elf_tools/bin/i686-elf-gcc.exe -std=gnu99 -I include/ -std=gnu99 -ffreestanding -O2 -c -Wincompatible-pointer-types'
asm = '/i686_elf_tools/bin/i686-elf-as.exe'
nasm = "nasm -f elf32"
ld = '/i686_elf_tools/bin/i686-elf-ld.exe'
cd = os.getcwd()  # 获取当前执行目录 'D:\CrashPowerDOS-main\'
out = "target"


def clean():
    print("Clean target folder")
    for file in os.listdir(cd + "\\target"):  # 遍历指定文件夹下所有文件
        os.remove(cd + "\\target\\" + file)
    return 0


def build_boot():  # 构建引导程序
    print("Building boot source code...")
    status = True
    for file in os.listdir(cd + '\\boot'):
        if status and file == 'boot.asm':
            cmd = cd + asm + " " + cd + "\\boot\\" + file + " -o " + cd + "\\target\\" + file.split(".")[0] + ".o"
            status = False
        else:
            cmd = nasm + " " + cd + "\\boot\\" + file + " -o " + cd + "\\target\\" + file.split(".")[0] + ".o"
        e = os.system(cmd)  # os.system 执行命令 e为返回值(非0即不正常退出,可做判断终止构建流程)
        if e != 0:
            return -1
    return 0


def build_driver():  # 构建内置驱动程序
    print("Building driver source code...")
    for file in os.listdir(cd + '\\driver'):
        cmd = cd + gcc + " " + "driver\\" + file + " -o " + "target\\" + file.split(".")[0] + ".o"
        e = os.system(cmd)
        if e != 0:
            return -1
    return 0


def build_kernel():  # 构建内核本体
    print("Building kernel source code...")
    for file in os.listdir(cd + '\\kernel'):
        cmd = cd + gcc + " " + "kernel\\" + file + " -o " + "target\\" + file.split(".")[0] + ".o"
        e = os.system(cmd)
        if e != 0:
            return -1
    return 0


def build_data():  # 构建数据结构实现
    print("Building util source code...")
    for file in os.listdir(cd + '\\util'):
        cmd = cd + gcc + " " + "util\\" + file + " -o " + "target\\" + file.split(".")[0] + ".o"
        e = os.system(cmd)
        if e != 0:
            return -1
    return 0


def build_sysapp():  # 构建内置系统应用
    print("Building sysapp source code...")
    for file in os.listdir(cd + '\\sysapp'):
        cmd = cd + gcc + " " + "sysapp\\" + file + " -o " + "target\\" + file.split(".")[0] + ".o"
        e = os.system(cmd)
        if e != 0:
            return -1
    return 0


def linker():  # 交叉编译链接
    print("Linking object files...")
    source_file = ""
    for file in os.listdir(cd + '\\target'):
        source_file = source_file + " target\\" + file
    return os.system(
        cd + "/i686_elf_tools/bin/i686-elf-gcc.exe -T linker.ld -o isodir\\sys\\kernel.elf -ffreestanding -O2 -nostdlib " + source_file + " -lgcc")


clean()
a = build_boot()
if a != 0:
    exit(-1)
a = build_driver()
if a != 0:
    exit(-1)
a = build_kernel()
if a != 0:
    exit(-1)
a = build_data()
if a != 0:
    exit(-1)
a = build_sysapp()
if a != 0:
    exit(-1)
a = linker()
if a != 0:
    exit(-1)
print("Launching i386 vm...")

if len(sys.argv) == 0 or sys.argv[1] == 'vga':
    print("Graphics MODE [VGA]")
    os.system("qemu-system-i386 -net nic,model=pcnet -net user -kernel isodir\\sys\\kernel.elf -drive format=qcow2,file=cpos.qcow2")
elif sys.argv[1] == 'vbe':
    print("Graphics MODE [VBE]")
    os.system("qemu-system-i386 -vga std -net nic,model=pcnet -net user -kernel isodir\\sys\\kernel.elf -drive format=qcow2,file=cpos.qcow2")