import os

Import('env')

def _exe_name() -> str:
    if os.name == 'nt':
        return env['BIN_DIR'] + '/texture_packer.exe'
    return env['BIN_DIR'] + '/texture_packer'

src_files = Split("""
    main.cpp
    
    packer.cpp
""")

prog_packer = env.UnityProgram(
    name = 'Texture Packer',
    target = env['BIN_DIR'] + '/texture_packer',
    source = src_files,
    dependencies = {
        'argparse': {},
        'mijin': {},
        'rectpack2D': {},
        'spdlog': {},
        'stb': {}
    }
)
env.Default(prog_packer)

def _pack_textures(env, target: str, source: 'list[str]'):
    cmd = env.Command(
        target = target,
        source = source,
        action = f'{_exe_name()} $TARGET $SOURCES'
    )
    env.Depends(cmd, prog_packer)
    return cmd
env.AddMethod(_pack_textures, 'PackTextures')

Return('env')