#!/usr/bin/python3
import argparse
import os


def parse_arguments():
    parser = argparse.ArgumentParser()
    parser.add_argument("--src_root", required=True, help="input symbol file")
    parser.add_argument("--output", required=True, help="output file")
    parser.add_argument("--output_source", required=True, help="output file")
    parser.add_argument("--version_file", required=True, help="VERSION_NUMBER file")
    parser.add_argument("--style", required=True, choices=["gcc", "vc", "xcode"])
    parser.add_argument("--config", required=True, nargs="+")
    return parser.parse_args()


args = parse_arguments()
print("Generating symbol file for %s" % str(args.config))
with open(args.version_file, "r") as f:
    VERSION_STRING = f.read().strip()

print("VERSION:%s" % VERSION_STRING)

symbols = set()
for c in args.config:
    file_name = os.path.join(args.src_root, "core", "providers", c, "symbols.txt")
    with open(file_name, "r") as file:
        for line in file:
            line = line.strip()
            if line in symbols:
                print("dup symbol: %s", line)
                exit(-1)
            symbols.add(line)
symbols = sorted(symbols)

symbol_index = 1
with open(args.output, "w") as file:
    if args.style == "vc":
        file.write("LIBRARY\n")
        file.write("EXPORTS\n")
    elif args.style == "xcode":
        pass  # xcode compile don't has any header.
    else:
        file.write("VERS_%s {\n" % VERSION_STRING)
        file.write(" global:\n")

    for symbol in symbols:
        if args.style == "vc":
            file.write(" %s @%d\n" % (symbol, symbol_index))
        elif args.style == "xcode":
            file.write("_%s\n" % symbol)
        else:
            file.write("  %s;\n" % symbol)
        symbol_index += 1

    if args.style == "gcc":
        file.write(" local:\n")
        file.write("    *;\n")
        file.write("};   \n")

with open(args.output_source, "w") as file:
    file.write("#include <onnxruntime_c_api.h>\n")
    for c in args.config:
        # WinML adapter should not be exported in platforms other than Windows.
        # Exporting OrtGetWinMLAdapter is exported without issues using .def file when compiling for Windows
        # so it isn't necessary to include it in generated_source.c

        # external symbols are removed, xnnpack ep will be created via the standard ORT API.
        # https://github.com/microsoft/onnxruntime/pull/11798
        if c not in ("winml", "cuda", "migraphx", "snpe", "xnnpack", "cann"):
            file.write("#include <core/providers/%s/%s_provider_factory.h>\n" % (c, c))
    file.write("void* GetFunctionEntryByName(const char* name){\n")
    for symbol in symbols:
        if symbol != "OrtGetWinMLAdapter":
            file.write('if(strcmp(name,"%s") ==0) return (void*)&%s;\n' % (symbol, symbol))
    file.write("return NULL;\n")
    file.write("}\n")