#!/usr/bin/python
#-*- coding: utf-8 -*-

import os
import sys
import shutil
import axmol
import re

if sys.platform == 'win32':
    if(sys.version_info.major >= 3):
        import winreg
    else:
        import _winreg as winreg

VS_VERSION_MAP = {
    2012 : "11.0",
    2013 : "12.0",
    2015 : "14.0",
    2017 : "15.0",
    2019 : "16.0"
}

def get_msbuild_path(vs_version):
    if not axmol.os_is_win32():
        return None

    if isinstance(vs_version, int):
        # The value of vs_version is int. such as : 2013, 2015
        if vs_version in VS_VERSION_MAP.keys():
            vs_ver = VS_VERSION_MAP[vs_version]
        else:
            # not supported VS version
            return None
    elif isinstance(vs_version, str):
        # The value of vs_version is string. such as: "12.0", "14.0"
        vs_ver = vs_version
    else:
        return None

    # If the system is 64bit, find VS in both 32bit & 64bit registry
    # If the system is 32bit, only find VS in 32bit registry
    if axmol.os_is_32bit_windows():
        reg_flag_list = [ winreg.KEY_WOW64_32KEY ]
    else:
        reg_flag_list = [ winreg.KEY_WOW64_64KEY, winreg.KEY_WOW64_32KEY ]

    # Find VS path
    msbuild_path = None
    for reg_flag in reg_flag_list:
        try:
            vs = winreg.OpenKey(
                winreg.HKEY_LOCAL_MACHINE,
                r"SOFTWARE\Microsoft\MSBuild\ToolsVersions\%s" % vs_ver,
                0,
                winreg.KEY_READ | reg_flag
            )
            msbuild_path, type = winreg.QueryValueEx(vs, 'MSBuildToolsPath')
        except:
            continue

        if msbuild_path is not None:
            msbuild_path = os.path.join(msbuild_path, "MSBuild.exe")
            if os.path.exists(msbuild_path):
                break
            else:
                msbuild_path = None

    return msbuild_path

def get_devenv_path(vs_version):
    if not axmol.os_is_win32():
        return None

    if isinstance(vs_version, int):
        # The value of vs_version is int. such as : 2013, 2015
        if vs_version in VS_VERSION_MAP.keys():
            vs_ver = VS_VERSION_MAP[vs_version]
        else:
            # not supported VS version
            return None
    elif isinstance(vs_version, str):
        # The value of vs_version is string. such as: "12.0", "14.0"
        vs_ver = vs_version
    else:
        return None

    # If the system is 64bit, find VS in both 32bit & 64bit registry
    # If the system is 32bit, only find VS in 32bit registry
    if axmol.os_is_32bit_windows():
        reg_flag_list = [ winreg.KEY_WOW64_32KEY ]
    else:
        reg_flag_list = [ winreg.KEY_WOW64_64KEY, winreg.KEY_WOW64_32KEY ]

    devenv_path = None
    for reg_flag in reg_flag_list:
        try:
            vs = winreg.OpenKey(
                winreg.HKEY_LOCAL_MACHINE,
                r"SOFTWARE\Microsoft\VisualStudio",
                0,
                winreg.KEY_READ | reg_flag
            )
        except:
            continue

        # find specified VS
        try:
            key = winreg.OpenKey(vs, r"SxS\VS7")
            devenv_path, type = winreg.QueryValueEx(key, vs_ver)
        except:
            pass

        if devenv_path is not None:
            devenv_path = os.path.join(devenv_path, "Common7", "IDE", "devenv.com")
            if os.path.exists(devenv_path):
                break
            else:
                devenv_path = None

    return devenv_path

def get_vs_versions():
    # Get the VS versions
    ret = []
    if not axmol.os_is_win32():
        return ret

    # If the system is 64bit, find VS in both 32bit & 64bit registry
    # If the system is 32bit, only find VS in 32bit registry
    if axmol.os_is_32bit_windows():
        reg_flag_list = [ winreg.KEY_WOW64_32KEY ]
    else:
        reg_flag_list = [ winreg.KEY_WOW64_64KEY, winreg.KEY_WOW64_32KEY ]

    version_pattern = re.compile(r'(\d+)\.(\d+)')
    for reg_flag in reg_flag_list:
        try:
            vs = winreg.OpenKey(
                winreg.HKEY_LOCAL_MACHINE,
                r"SOFTWARE\Microsoft\VisualStudio",
                0,
                winreg.KEY_READ | reg_flag
            )
        except:
            continue

        i = 0
        while True:
            # enum the keys in vs reg
            try:
                version = winreg.EnumKey(vs, i)
            except:
                break
            i += 1

            match = re.match(version_pattern, version)
            if match is None:
                continue

            ver_str = '%s.%s' % (match.group(1), match.group(2))
            if ver_str not in ret:
                ret.append(ver_str)

    return ret

def get_newest_msbuild(min_ver=None):
    versions = get_vs_versions()
    cmp = axmol.version_compare
    if isinstance(min_ver, int) and min_ver in VS_VERSION_MAP.keys():
        # value of min_ver is int. such as : 2013, 2015
        min_ver = VS_VERSION_MAP[min_ver]

    find_ver = None
    find_path = None
    for cur_ver in versions:
        if cmp(cur_ver, "<", min_ver):
            continue

        v_path = get_msbuild_path(v)
        if v_path is not None:
            if (find_ver is None) or cmp(cur_ver, ">", find_ver):
                find_ver = cur_ver
                find_path = v_path

    return find_path

def get_newest_devenv(min_ver=None):
    versions = get_vs_versions()
    cmp = axmol.version_compare

    if min_ver is None: 
        # mininal required version "Visual Studio 14 2015"
        min_ver = "14.0"

    if isinstance(min_ver, int) and min_ver in VS_VERSION_MAP.keys():
        # value of min_ver is int. such as : 2013, 2015
        min_ver = VS_VERSION_MAP[min_ver]

    find_ver = None
    find_path = None
    for cur_ver in versions:
        if cmp(cur_ver, "<", min_ver):
            continue

        v_path = get_devenv_path(cur_ver)
        if v_path is not None:
            if (find_ver is None) or cmp(cur_ver, ">", find_ver):
                find_ver = cur_ver
                find_path = v_path

    if find_ver is None:
        # try use vswhere to find visual studio 2017+
        import vswhere
        find_path = vswhere.find(legacy=True, prop='productPath')
        if  isinstance(find_path, list) and len(find_path) > 0:
            find_path = find_path[0]

        find_ver = vswhere.find(legacy=True, prop='productDisplayVersion')
        if  isinstance(find_ver, list) and len(find_ver) > 0:
            find_ver = find_ver[0]
        find_ver_nums = find_ver.split('.')
        if(len(find_ver_nums) >= 3):
            find_ver_nums = find_ver_nums[:len(find_ver_nums)-(len(find_ver_nums) - 2)]
        find_ver = ".".join(find_ver_nums)
    
    if find_ver is None:
        return None

    if cmp(min_ver, ">", 0) and cmp(find_ver, ">", min_ver):
        need_upgrade = True
    else:
        need_upgrade = False

    return (need_upgrade, find_path, find_ver)

def rmdir(folder):
    if os.path.exists(folder):
        if sys.platform == 'win32':
            axmol.CMDRunner.run_cmd("rd /s/q \"%s\"" % folder, verbose=True)
        else:
            shutil.rmtree(folder)
            
def get_str_from_file(engine_path, file_path, pattern):
    ret = None

    try:
        version_file = os.path.join(engine_path, file_path)
        if os.path.isfile(version_file):
            f = open(version_file)
            for line in f.readlines():
                match = re.match(pattern, line)
                if match:
                    ret = match.group(1)
                    break
            f.close()
    except:
        pass

    return ret


VERSION_FILE_PATH = 'core/axmol.cpp'
VERSION_PATTERN = r".*return[ \t]+\"(.*)\".*;"

VERSION_H_PATH = 'core/version.h'
COMMIT_HASH_PATTERN = r".*AX_GIT_COMMIT_HASH[ \t]+\"(.*)\""

def get_engine_version(engine_path):
    ret = None
    ver_str = get_str_from_file(engine_path, VERSION_FILE_PATH, VERSION_PATTERN)
    commit_hash = get_str_from_file(engine_path, VERSION_H_PATH, COMMIT_HASH_PATTERN)
    if ver_str is not None and commit_hash is not None:
        ret = ver_str + commit_hash
    
    return ret