project('cthulhu',
  version: '2026.07.18',
  meson_version: '>= 1.0.0',
)

python = import('python')
i18n = import('i18n')

python_minimum_version = '3.9'
python3 = python.find_installation('python3', required: true)
if not python3.language_version().version_compare(f'>= @python_minimum_version@')
  error(f'Python @python_minimum_version@ or newer is required.')
endif

# Hard dependencies (checked via pkg-config)
dependency('atspi-2', version: '>= 2.52.0')
dependency('atk-bridge-2.0', version: '>= 2.26.0')
dependency('pygobject-3.0', version: '>= 3.18')

# Hard Python module dependencies
gi_result = python.find_installation('python3', modules:['gi'], required: false)
if not gi_result.found()
  error('gi (PyGObject) is required')
endif

json_result = python.find_installation('python3', modules:['json'], required: false)
if not json_result.found()
  error('json module is required')
endif

pluggy_result = python.find_installation('python3', modules:['pluggy'], required: false)
if not pluggy_result.found()
  error('pluggy module is required')
endif

# End users might not have the Gtk development libraries installed, making pkg-config fail.
# Therefore, check this dependency via python.
gtk_major_version = '3'
gtk_minor_version = '0'
gtk_command = ' '.join([
  'import gi; gi.require_version("Gtk", "3.0"); from gi.repository import Gtk;',
  'print(f"{Gtk.get_major_version()}.{Gtk.get_minor_version()}.{Gtk.get_micro_version()}");',
  f'failed = Gtk.get_major_version() != @gtk_major_version@;',
  'exit(failed)'
])
gtk_test = run_command(python3, '-c', gtk_command, check: false)
description = f'GTK @gtk_major_version@.@gtk_minor_version@'
version = gtk_test.stdout().strip()
if gtk_test.returncode() != 0
  error(f'@description@ failed (found @version@)')
endif

# Optional python modules with their descriptions
optional_modules = {
  'brlapi': 'braille output',
  'louis': 'contracted braille',
  'speechd': 'speech output',
  'dasbus': 'D-Bus remote controller',
  'pywayland': 'Wayland shared workspace backend',
  'gi.repository.Wnck': 'mouse review',
}

summary = {}

wine_access_mode = get_option('wine-access')
wine_access_tools = {
  'cmake': find_program('cmake', required: false),
  'winegcc': find_program('winegcc', required: false),
  'wineg++': find_program('wineg++', required: false),
  'widl': find_program('widl', required: false),
}
wine_access_enabled = wine_access_mode != 'disabled' and host_machine.cpu_family() == 'x86_64'
foreach tool_name, tool : wine_access_tools
  if not tool.found()
    wine_access_enabled = false
    if wine_access_mode == 'enabled'
      error(f'-Dwine-access=enabled requires @tool_name@')
    endif
  endif
endforeach
if wine_access_mode == 'enabled' and host_machine.cpu_family() != 'x86_64'
  error('-Dwine-access=enabled currently requires an x86_64 build host')
endif

if wine_access_enabled
  wine_access_outputs = custom_target(
    'wine-access-helper',
    output: ['cthulhu-wine-access.exe', 'cthulhu-wine-access.exe.so'],
    command: [
      find_program('bash'),
      files('scripts/build-wine-access.sh'),
      meson.current_source_dir() / 'wine-access',
      meson.current_build_dir() / 'wine-access-build',
      '@OUTPUT0@',
      '@OUTPUT1@',
    ],
    depend_files: files(
      'scripts/build-wine-access.sh',
      'wine-access/CMakeLists.txt',
      'wine-access/main.cpp',
      'wine-access/nvdaController.idl',
      'wine-access/winelib-toolchain.cmake',
    ),
    build_by_default: true,
    install: true,
    install_dir: get_option('libexecdir') / 'cthulhu' / 'wine',
  )
  summary += {'Wine accessibility': 'yes (Winelib x86_64 helper)'}
else
  summary += {'Wine accessibility': 'no'}
endif
foreach module, description : optional_modules
  result = python.find_installation('python3', modules:[module], required: false)
  if result.found()
    summary += {description: f'yes (found @module@)'}
  else
    summary += {description: f'no (missing @module@)'}
  endif
endforeach

# Optional synthesizer services
speech_output = []
if python.find_installation('python3', modules:['speechd'], required: false).found()
  speech_output += ['speechd']
endif

if speech_output.length() > 0
  summary += {'speech output': 'yes (found @0@)'.format(', '.join(speech_output))}
else
  summary += {'speech output': 'no (missing speechd)'}
endif

# Check for GStreamer
gstreamer_dep = dependency('gstreamer-1.0', required: false)
if gstreamer_dep.found()
  summary += {'sound support': 'yes (found gstreamer)'}
else
  summary += {'sound support': 'no (missing gstreamer)'}
endif

# Update icon cache manually (desktop-neutral) - optional, ignore failures
gtk_update_icon_cache = find_program('gtk4-update-icon-cache', required: false)
if gtk_update_icon_cache.found()
  meson.add_install_script('sh', '-c', 
    'gtk4-update-icon-cache -q -t -f "$MESON_INSTALL_DESTDIR_PREFIX/' + get_option('datadir') / 'icons' / 'hicolor' + '" || echo "Icon cache update skipped"')
endif

summary += {'Install dir': python.find_installation('python3').get_install_dir()}

subdir('docs')
subdir('icons')
subdir('po')
subdir('sounds')
subdir('src')

summary(summary)