#!/usr/bin/env python

Import('env')

import core_builders
import make_binders
from platform_methods import run_in_subprocess

env.core_sources = []


# Generate AES256 script encryption key
import os
txt = "0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0"
if ("SCRIPT_AES256_ENCRYPTION_KEY" in os.environ):
    e = os.environ["SCRIPT_AES256_ENCRYPTION_KEY"]
    txt = ""
    ec_valid = True
    if (len(e) != 64):
        ec_valid = False
    else:

        for i in range(len(e) >> 1):
            if (i > 0):
                txt += ","
            txts = "0x" + e[i * 2:i * 2 + 2]
            try:
                int(txts, 16)
            except:
                ec_valid = False
            txt += txts
    if (not ec_valid):
        txt = "0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0"
        print("Invalid AES256 encryption key, not 64 bits hex: " + e)

# NOTE: It is safe to generate this file here, since this is still executed serially
with open("script_encryption_key.gen.cpp", "w") as f:
    f.write("#include \"core/project_settings.h\"\nuint8_t script_encryption_key[32]={" + txt + "};\n")


# Add required thirdparty code.
env_thirdparty = env.Clone()
env_thirdparty.disable_warnings()

# Misc thirdparty code: header paths are hardcoded, we don't need to append
# to the include path (saves a few chars on the compiler invocation for touchy MSVC...)
thirdparty_misc_dir = "#thirdparty/misc/"
thirdparty_misc_sources = [
    # C sources
    "base64.c",
    "fastlz.c",
    "sha256.c",
    "smaz.c",

    # C++ sources
    "aes256.cpp",
    "hq2x.cpp",
    "md5.cpp",
    "pcg.cpp",
    "triangulator.cpp",
]
thirdparty_misc_sources = [thirdparty_misc_dir + file for file in thirdparty_misc_sources]
env_thirdparty.add_source_files(env.core_sources, thirdparty_misc_sources)

# Zlib library, can be unbundled
if env['builtin_zlib']:
	thirdparty_zlib_dir = "#thirdparty/zlib/"
	thirdparty_zlib_sources = [
		"adler32.c",
		"compress.c",
		"crc32.c",
		"deflate.c",
		"infback.c",
		"inffast.c",
		"inflate.c",
		"inftrees.c",
		"trees.c",
		"uncompr.c",
		"zutil.c",
	]
	thirdparty_zlib_sources = [thirdparty_zlib_dir + file for file in thirdparty_zlib_sources]

	env_thirdparty.Append(CPPPATH=[thirdparty_zlib_dir])
	# Needs to be available in main env too
	env.Append(CPPPATH=[thirdparty_zlib_dir])

	env_thirdparty.add_source_files(env.core_sources, thirdparty_zlib_sources)

# Minizip library, could be unbundled in theory
# However, our version has some custom modifications, so it won't compile with the system one
thirdparty_minizip_dir = "#thirdparty/minizip/"
thirdparty_minizip_sources = [
    "ioapi.c",
    "unzip.c",
    "zip.c",
]
thirdparty_minizip_sources = [thirdparty_minizip_dir + file for file in thirdparty_minizip_sources]
env_thirdparty.add_source_files(env.core_sources, thirdparty_minizip_sources)

# Zstd library, can be unbundled in theory
# though we currently use some private symbols
# https://github.com/godotengine/godot/issues/17374
if env['builtin_zstd']:
    thirdparty_zstd_dir = "#thirdparty/zstd/"
    thirdparty_zstd_sources = [
        "common/debug.c",
        "common/entropy_common.c",
        "common/error_private.c",
        "common/fse_decompress.c",
        "common/pool.c",
        "common/threading.c",
        "common/xxhash.c",
        "common/zstd_common.c",
        "compress/fse_compress.c",
        "compress/hist.c",
        "compress/huf_compress.c",
        "compress/zstd_compress.c",
        "compress/zstd_double_fast.c",
        "compress/zstd_fast.c",
        "compress/zstd_lazy.c",
        "compress/zstd_ldm.c",
        "compress/zstd_opt.c",
        "compress/zstdmt_compress.c",
        "decompress/huf_decompress.c",
        "decompress/zstd_ddict.c",
        "decompress/zstd_decompress_block.c",
        "decompress/zstd_decompress.c",
    ]
    thirdparty_zstd_sources = [thirdparty_zstd_dir + file for file in thirdparty_zstd_sources]

    env_thirdparty.Append(CPPPATH=[thirdparty_zstd_dir, thirdparty_zstd_dir + "common"])
    env_thirdparty.Append(CPPFLAGS="-DZSTD_STATIC_LINKING_ONLY")
    env.Append(CPPPATH=thirdparty_zstd_dir)
    # Also needed in main env includes will trigger warnings
    env.Append(CPPFLAGS="-DZSTD_STATIC_LINKING_ONLY")

    env_thirdparty.add_source_files(env.core_sources, thirdparty_zstd_sources)


# Godot's own sources
env.add_source_files(env.core_sources, "*.cpp")

# Certificates
env.Depends("#core/io/certs_compressed.gen.h", ["#thirdparty/certs/ca-certificates.crt", env.Value(env['builtin_certs']), env.Value(env['system_certs_path'])])
env.CommandNoCache("#core/io/certs_compressed.gen.h", "#thirdparty/certs/ca-certificates.crt", run_in_subprocess(core_builders.make_certs_header))

# Make binders
env.CommandNoCache(['method_bind.gen.inc', 'method_bind_ext.gen.inc'], 'make_binders.py', run_in_subprocess(make_binders.run))

# Authors
env.Depends('#core/authors.gen.h', "../AUTHORS.md")
env.CommandNoCache('#core/authors.gen.h', "../AUTHORS.md", run_in_subprocess(core_builders.make_authors_header))

# Donors
env.Depends('#core/donors.gen.h', "../DONORS.md")
env.CommandNoCache('#core/donors.gen.h', "../DONORS.md", run_in_subprocess(core_builders.make_donors_header))

# License
env.Depends('#core/license.gen.h', ["../COPYRIGHT.txt", "../LICENSE.txt"])
env.CommandNoCache('#core/license.gen.h', ["../COPYRIGHT.txt", "../LICENSE.txt"], run_in_subprocess(core_builders.make_license_header))

# Chain load SCsubs
SConscript('os/SCsub')
SConscript('math/SCsub')
SConscript('io/SCsub')
SConscript('bind/SCsub')


# Build it all as a library
lib = env.add_library("core", env.core_sources)
env.Prepend(LIBS=[lib])