import os
import warnings
import meson_impl as impl

_gArrayOptions = []
_gFeatureOptions = []
_gBooleanOptions = []
_gComboOptions = []
_gSimpleOptions = []


def noop():
    return


def message(str):
    print(str)


def error(message):
    exit(message)


def warning(message):
    warnings.warn(message)


def set_relative_dir(dir):
    impl.set_relative_dir(dir)


def files(*filenames):
    file_list = []
    for file in filenames:
        file_list.append(impl.File(os.path.join(impl.get_relative_dir(), file)))
    return file_list


def declare_dependency(
    compile_args=[],
    d_import_dirs=[],
    d_module_versions='',
    dependencies=[],
    extra_files=[],
    include_directories=[],
    link_args=[],
    link_whole=[],
    link_with=[],
    objects=[],
    sources=[],
    variables=[],
    version='',
):
    link_with = impl.get_linear_list([link_with])
    link_whole = impl.get_linear_list([link_whole])

    return impl.Dependency(
        'declared',
        version,
        found=True,
        compile_args=compile_args,
        include_directories=include_directories,
        dependencies=dependencies,
        sources=sources,
        link_with=link_with,
        link_whole=link_whole,
    )


def find_program(name: str, required=False, native=False, disabler=False, version=''):
    if type(required) is impl.FeatureOption:
        required = required.state == impl.EnableState.ENABLED
    if type(required) is not bool:
        exit('Unhandled required type: ' + str(type(required)))

    maybe_filename = impl.get_relative_dir(name)

    # may be a script in the current directory
    if os.path.isfile(maybe_filename):
        return impl.Program(maybe_filename, found=True)

    # These are required for building turnip though not tagged as such
    if name == 'bison' or name == 'flex' or name == 'gzip':
        return impl.Program(name, found=True)

    if (
        name == 'byacc'
        or name == 'glslangValidator'
        or name == 'install_megadrivers.py'
        or name == 'nm'
        or name == 'python'
        or name == 'symbols-check.py'
        or name == 'sphinx-build'
    ):
        return impl.Program(name, found=required)

    exit('Unhandled program check: ' + name)


def add_project_arguments(args, language=[], native=False):
    impl.add_project_arguments(args, language, native)


def add_project_link_arguments(args, language=[], native=False):
    return


# Used by meson_options.txt to define an option
def option(
    name: str,
    type: str,
    min: int = 0,
    max: int = 0,
    value='',
    choices=[],
    description='',
    deprecated=None,
):
    if type == 'array':
        global _gArrayOptions
        _gArrayOptions.append(impl.ArrayOption(name, value))
        return
    if type == 'feature':
        global _gFeatureOptions
        if value == '' or value == 'auto':
            state = impl.EnableState.AUTO
        elif value == 'disabled':
            state = impl.EnableState.DISABLED
        elif value == 'enabled':
            state = impl.EnableState.ENABLED
        else:
            exit('Unhandled feature option value')
        _gFeatureOptions.append(impl.FeatureOption(name, state))
        return
    if type == 'boolean':
        global _gBooleanOptions
        if isinstance(value, str):
            flag = True if value.lower() == 'true' else False
            _gBooleanOptions.append(impl.BooleanOption(name, flag))
        else:
            _gBooleanOptions.append(impl.BooleanOption(name, value))
        return
    if type == 'combo':
        global _gComboOptions
        _gComboOptions.append(impl.ComboOption(name, value))
        return
    if type == 'string' or type == 'integer':
        global _gSimpleOptions
        _gSimpleOptions.append(impl.SimpleOption(name, value))
        return


def set_option(name, value: str):
    print('set_option: %s=%s' % (name, value))
    for option in _gArrayOptions:
        if option.name == name:
            option.set(value)

    for option in _gFeatureOptions:
        if option.name == name:
            option.set(value)

    for option in _gBooleanOptions:
        if option.name == name:
            option.set(value)

    for option in _gComboOptions:
        if option.name == name:
            option.set(value)

    for option in _gSimpleOptions:
        if option.name == name:
            option.set(value)

    for option in impl.get_project_options():
        if option.name == name:
            option.set(value)


def get_option(name):
    for option in _gArrayOptions:
        if option.name == name:
            return option.strings

    for option in _gFeatureOptions:
        if option.name == name:
            return option

    for option in _gBooleanOptions:
        if option.name == name:
            return option.value

    for option in _gComboOptions:
        if option.name == name:
            return option.value

    for option in _gSimpleOptions:
        if option.name == name:
            return option.value

    for option in impl.get_project_options():
        if option.name == name:
            return option.value

    # built-in options
    if name == 'layout':
        return 'mirror'
    if name == 'prefix':
        return 'prefix'
    if name == 'libdir':
        return 'libdir'
    if name == 'datadir':
        return 'datadir'
    if name == 'sysconfdir':
        return 'sysconfdir'
    if name == 'includedir':
        return 'includedir'
    if name == 'c_args':
        return ''
    if name == 'cpp_rtti':
        return False
    if name == 'debug':
        return True
    if name == 'b_sanitize':
        return False
    if name == 'backend':
        return 'custom'

    exit('Unhandled option: ' + name)


def project(name, language_list, version, license, meson_version, default_options=[]):
    impl.project(name, language_list, version, license, meson_version, default_options)


def run_command(program, *commands, check=False):
    return program.run_command(commands)


def environment():
    return impl.Environment()


def join_paths(*paths):
    joined_path = ''
    for path in paths:
        joined_path = os.path.join(joined_path, path)
    return joined_path


def executable(
    target_name,
    *source,
    c_args=[],
    cpp_args=[],
    c_pch='',
    build_by_default=False,
    build_rpath='',
    d_debug=[],
    d_import_dirs=[],
    d_module_versions=[],
    d_unittest=False,
    dependencies=[],
    export_dynamic=False,
    extra_files='',
    gnu_symbol_visibility='',
    gui_app=False,
    implib=False,
    implicit_include_directories=False,
    include_directories=[],
    install=False,
    install_dir='',
    install_mode=[],
    install_rpath='',
    install_tag='',
    link_args=[],
    link_depends='',
    link_language='',
    link_whole=[],
    link_with=[],
    name_prefix='',
    name_suffix='',
    native=False,
    objects=[],
    override_options=[],
    pie=False,
    rust_crate_type='',
    rust_dependency_map={},
    sources='',
    vala_args=[],
    vs_module_defs='',
    win_subsystem='',
):
    return impl.Executable(target_name)


def test(
    name,
    executable,
    args=[],
    depends=[],
    env=[],
    is_parallel=False,
    priority=0,
    protocol='',
    should_fail=False,
    suite='',
    timeout=0,
    verbose=False,
    workdir='',
):
    return


def summary(entry, bool_yn=False, list_sep='', section=''):
    return


def install_headers(*headers, subdir=''):
    return


def install_data(
    *files,
    follow_symlinks=False,
    install_dir='',
    install_mode=[],
    install_tag='',
    preserve_path=False,
    rename=[],
    sources=[],
):
    return


def subdir(dir_=''):
    return