# vim: set sts=2 ts=8 sw=2 tw=99 et ft=python:
import os, sys

def ResolveEnvPath(env, folder):
  if env in os.environ:
    path = os.environ[env]
    if os.path.isdir(path):
      return path
    return None

  head = os.getcwd()
  oldhead = None
  while head != None and head != oldhead:
    path = os.path.join(head, folder)
    if os.path.isdir(path):
      return path
    oldhead = head
    head, tail = os.path.split(head)

  return None

def Normalize(path):
  return os.path.abspath(os.path.normpath(path))

class AsyncSocketConfig(object):
  def __init__(self):
    self.sdks = {}
    self.binaries = []
    self.extensions = []
    self.generated_headers = None
    self.sm_root = None

  @property
  def tag(self):
    if builder.options.debug == '1':
      return 'Debug'
    return 'Release'

  def detectSDKs(self):
    if builder.options.sm_path:
      self.sm_root = builder.options.sm_path
    else:
      self.sm_root = ResolveEnvPath('SOURCEMOD18', 'sourcemod-1.8')
      if not self.sm_root:
        self.sm_root = ResolveEnvPath('SOURCEMOD', 'sourcemod')
      if not self.sm_root:
        self.sm_root = ResolveEnvPath('SOURCEMOD_DEV', 'sourcemod-central')

    if not self.sm_root or not os.path.isdir(self.sm_root):
      raise Exception('Could not find a source copy of SourceMod')
    self.sm_root = Normalize(self.sm_root)

  def configure(self):
    cxx = builder.DetectCompilers()

    if cxx.like('gcc'):
      self.configure_gcc(cxx)
    elif cxx.vendor == 'msvc':
      self.configure_msvc(cxx)

    # Optimizaiton
    if builder.options.opt == '1':
      cxx.defines += ['NDEBUG']

    # Debugging
    if builder.options.debug == '1':
      cxx.defines += ['DEBUG', '_DEBUG']

    # Platform-specifics
    if builder.target_platform == 'linux':
      self.configure_linux(cxx)
    elif builder.target_platform == 'mac':
      self.configure_mac(cxx)
    elif builder.target_platform == 'windows':
      self.configure_windows(cxx)

    # Finish up.
    cxx.includes += [
      os.path.join(self.sm_root, 'public'),
    ]

  def configure_gcc(self, cxx):
    cxx.defines += [
      'stricmp=strcasecmp',
      '_stricmp=strcasecmp',
      '_snprintf=snprintf',
      '_vsnprintf=vsnprintf',
      'HAVE_STDINT_H',
      'GNUC',
    ]
    cxx.cflags += [
      '-pipe',
      '-fno-strict-aliasing',
#      '-Wall',
      '-Werror',
      '-Wno-unused',
      '-Wno-switch',
      '-Wno-array-bounds',
      '-msse',
      '-m32',
      '-fvisibility=hidden',
    ]
    cxx.cxxflags += [
      '-std=c++14',
      '-fno-exceptions',
      '-fno-threadsafe-statics',
      '-Wno-non-virtual-dtor',
      '-Wno-overloaded-virtual',
      '-fvisibility-inlines-hidden',
    ]
    cxx.linkflags += ['-m32']

    have_gcc = cxx.vendor == 'gcc'
    have_clang = cxx.vendor == 'clang'
    if cxx.version >= 'clang-3.6':
      cxx.cxxflags += ['-Wno-inconsistent-missing-override']
    if have_clang or (cxx.version >= 'gcc-4.6'):
      cxx.cflags += ['-Wno-narrowing']
    if have_clang or (cxx.version >= 'gcc-4.7'):
      cxx.cxxflags += ['-Wno-delete-non-virtual-dtor']
    if cxx.version >= 'gcc-4.8':
      cxx.cflags += ['-Wno-unused-result']

    if have_clang:
      cxx.cxxflags += ['-Wno-implicit-exception-spec-mismatch']
      if cxx.version >= 'apple-clang-5.1' or cxx.version >= 'clang-3.4':
        cxx.cxxflags += ['-Wno-deprecated-register']
      else:
        cxx.cxxflags += ['-Wno-deprecated']
      cxx.cflags += ['-Wno-sometimes-uninitialized']

    if have_gcc:
      cxx.cflags += ['-mfpmath=sse']

    if builder.options.opt == '1':
      cxx.cflags += ['-O3']

  def configure_msvc(self, cxx):
    if builder.options.debug == '1':
      cxx.cflags += ['/MTd']
      cxx.linkflags += ['/NODEFAULTLIB:libcmt']
    else:
      cxx.cflags += ['/MT']
    cxx.defines += [
      '_CRT_SECURE_NO_DEPRECATE',
      '_CRT_SECURE_NO_WARNINGS',
      '_CRT_NONSTDC_NO_DEPRECATE',
      '_ITERATOR_DEBUG_LEVEL=0',
    ]
    cxx.cflags += [
      '/W3',
    ]
    cxx.cxxflags += [
      '/EHsc',
      '/GR-',
      '/TP',
    ]
    cxx.linkflags += [
      '/MACHINE:X86',
      'kernel32.lib',
      'user32.lib',
      'gdi32.lib',
      'winspool.lib',
      'comdlg32.lib',
      'advapi32.lib',
      'shell32.lib',
      'ole32.lib',
      'oleaut32.lib',
      'uuid.lib',
      'odbc32.lib',
      'odbccp32.lib',
    ]

    if builder.options.opt == '1':
      cxx.cflags += ['/Ox', '/Zo']
      cxx.linkflags += ['/OPT:ICF', '/OPT:REF']

    if builder.options.debug == '1':
      cxx.cflags += ['/Od', '/RTC1']

    # This needs to be after our optimization flags which could otherwise disable it.
    # Don't omit the frame pointer.
    cxx.cflags += ['/Oy-']

  def configure_linux(self, cxx):
    cxx.defines += ['_LINUX', 'POSIX']
    cxx.linkflags += ['-Wl,--exclude-libs,ALL', '-lm']
    if cxx.vendor == 'gcc':
      cxx.linkflags += ['-static-libgcc']
    elif cxx.vendor == 'clang':
      cxx.linkflags += ['-lgcc_eh']
    cxx.linkflags += ['-static-libstdc++']

  def configure_mac(self, cxx):
    cxx.defines += ['OSX', '_OSX', 'POSIX']
    cxx.cflags += ['-mmacosx-version-min=10.5']
    cxx.linkflags += [
      '-mmacosx-version-min=10.5',
      '-arch', 'i386',
      '-lstdc++',
      '-stdlib=libstdc++',
    ]
    cxx.cxxflags += ['-stdlib=libstdc++']

  def configure_windows(self, cxx):
    cxx.defines += ['WIN32', '_WINDOWS']

  def ConfigureForExtension(self, context, compiler):
    compiler.cxxincludes += [
      os.path.join(context.currentSourcePath),
      os.path.join(context.currentSourcePath, 'sdk'),
      os.path.join(self.sm_root, 'public'),
      os.path.join(self.sm_root, 'public', 'extensions'),
      os.path.join(self.sm_root, 'sourcepawn', 'include'),
      os.path.join(self.sm_root, 'public', 'amtl', 'amtl'),
      os.path.join(self.sm_root, 'public', 'amtl'),
    ]
    return compiler

AsyncSocket = AsyncSocketConfig()
AsyncSocket.detectSDKs()
AsyncSocket.configure()

# Add additional buildscripts here
BuildScripts = [
  'extension/AMBuilder'
]

if builder.backend == 'amb2':
  BuildScripts += [
    'PackageScript',
  ]

builder.RunBuildScripts(BuildScripts, { 'AsyncSocket': AsyncSocket})