# -*- Mode: python; py-indent-offset: 4; indent-tabs-mode: nil; coding: utf-8; -*-
top = '..'

from waflib import Options

def options(opt):
    for subdir in opt.path.ant_glob('*', dir=True, src=False):
        tool = subdir.path_from(opt.path)
        opt.add_option(f'--enable-{tool}',
                       help=f'Build tool {tool} (enabled by default)',
                       action='store_true', dest=f'enable_{tool}')
        opt.add_option(f'--disable-{tool}',
                       help=f'Do not build tool {tool}',
                       action='store_true', dest=f'disable_{tool}')
        opt.recurse(str(tool), mandatory=False)

def configure(conf):
    all_tools = set() # all available tools
    enabled_tools = set() # --enable-X
    disabled_tools = set() # --disable-X

    for subdir in conf.path.ant_glob('*', dir=True, src=False):
        tool = subdir.path_from(conf.path)
        all_tools.add(tool)

        is_enabled = getattr(Options.options, f'enable_{tool}')
        is_disabled = getattr(Options.options, f'disable_{tool}')

        if is_enabled and is_disabled:
            conf.fatal(f'--enable-{tool} and --disable-{tool} cannot be both specified')

        if is_enabled:
            enabled_tools.add(tool)

        if is_disabled:
            disabled_tools.add(tool)

    if len(enabled_tools) == 0:
        conf.env.BUILD_TOOLS = list(all_tools - disabled_tools)
    else:
        conf.env.BUILD_TOOLS = list(enabled_tools)

    for tool in conf.env.BUILD_TOOLS:
        conf.recurse(tool, mandatory=False)

def build(bld):
    for tool in bld.env.BUILD_TOOLS:
        bld.recurse(tool)