#!/usr/bin/python3

# Copyright (C) 2020 - 2022 Advanced Micro Devices, Inc. All rights reserved.
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.

"""Manage build and installation"""

import re
import sys
import os
import platform
import subprocess
import argparse
import pathlib
import shutil
from fnmatch import fnmatchcase

args = {}
param = {}
OS_info = {}

def parse_args():
    """Parse command-line arguments"""
    parser = argparse.ArgumentParser(description="""Checks build arguments""")
    # common
    parser.add_argument('-g', '--debug', required=False, default=False,  action='store_true',
                        help='Generate Debug build (optional, default: False)')
    parser.add_argument(      '--build_dir', type=str, required=False, default = "build",
                        help='Build directory path (optional, default: build)')
    parser.add_argument(      '--static', required=False, default=False, dest='static_lib', action='store_true',
                        help='Generate static library build (optional, default: False)')
    parser.add_argument('-c', '--clients', required=False, default=False, dest='build_clients', action='store_true',
                        help='Generate all client builds (optional, default: False)')
    parser.add_argument('-i', '--install', required=False, default=False, dest='install', action='store_true',
                        help='Install after build (optional, default: False)')
    parser.add_argument(      '--cmake_darg', required=False, dest='cmake_dargs', nargs='+',
                        help='List of additional cmake defines for builds (optional, e.g. CMAKE)')
    parser.add_argument('-v', '--verbose', required=False, default=False, action='store_true',
                        help='Verbose build (optional, default: False)')

    return parser.parse_args()

def os_detect():
    global OS_info
    if os.name == "nt":
        OS_info["ID"] = platform.system()
    else:
        inf_file = "/etc/os-release"
        if os.path.exists(inf_file):
            with open(inf_file) as f:
                for line in f:
                    if "=" in line:
                        k,v = line.strip().split("=")
                        OS_info[k] = v.replace('"','')
    OS_info["NUM_PROC"] = os.cpu_count()
    print(OS_info)

def create_dir(dir_path):
    full_path = ""
    if os.path.isabs(dir_path):
        full_path = dir_path
    else:
        full_path = os.path.join( os.getcwd(), dir_path )
    pathlib.Path(full_path).mkdir(parents=True, exist_ok=True)

def delete_dir(dir_path) :
    if os.path.exists(dir_path):
        shutil.rmtree(dir_path)

def cmake_path(os_path):
    if os.name == "nt":
        return os_path.replace("\\", "/")
    else:
        return os_path

def config_cmd():
    global args
    global OS_info
    cwd_path = os.getcwd()
    cmake_executable = "cmake"
    cmake_options = []
    src_path = cmake_path(cwd_path)
    cmake_platform_opts = []
    if os.name == "nt":
        # not really rocm path as none exist, HIP_DIR set in toolchain is more important
        rocm_path = os.getenv( 'ROCM_CMAKE_PATH', "C:/github/rocm-cmake-master/share/rocm")
        #set CPACK_PACKAGING_INSTALL_PREFIX= defined as blank as it is appended to end of path for archive creation
        cmake_platform_opts.append( f"-DCPACK_PACKAGING_INSTALL_PREFIX=" )
        cmake_platform_opts.append( f"-DCMAKE_INSTALL_PREFIX=C:/hipSDK" )
        generator = ["-G", "Ninja"]
        cmake_options.extend( generator )
        toolchain = os.path.join( src_path, "toolchain-windows.cmake" )
    else:
        rocm_path = os.getenv( 'ROCM_PATH', "/opt/rocm")
        cmake_platform_opts.append( f"-DROCM_DIR:PATH={rocm_path}")
        cmake_platform_opts.append( f"-DCPACK_PACKAGING_INSTALL_PREFIX={rocm_path}" )
        cmake_platform_opts.append( f"-DCMAKE_INSTALL_PREFIX=rocfft-install" )
        toolchain = "toolchain-linux.cmake"

    print( f"Build source path: {src_path}")

    tools = f"-DCMAKE_TOOLCHAIN_FILE={toolchain}"
    cmake_options.append( tools )

    cmake_options.extend( cmake_platform_opts )

    cmake_base_options = [f"-DROCM_PATH={rocm_path}", f"-DCMAKE_PREFIX_PATH:PATH={rocm_path}"]
    cmake_options.extend( cmake_base_options )

    # packaging options
    cmake_pack_options = f"-DCPACK_SET_DESTDIR=OFF"
    cmake_options.append( cmake_pack_options )

    if os.getenv('CMAKE_CXX_COMPILER_LAUNCHER'):
        cmake_options.append( f"-DCMAKE_CXX_COMPILER_LAUNCHER={os.getenv('CMAKE_CXX_COMPILER_LAUNCHER')}" )

    print( cmake_options )

    # build type
    cmake_config = ""
    build_dir = os.path.abspath(args.build_dir)
    if not args.debug:
        build_path = os.path.join(build_dir, "release")
        cmake_config="Release"
    else:
        build_path = os.path.join(build_dir, "debug")
        cmake_config="Debug"

    cmake_options.append( f"-DCMAKE_BUILD_TYPE={cmake_config}" )

    # clean
    delete_dir( build_path )

    create_dir( os.path.join(build_path, "clients") )
    os.chdir( build_path )

    if args.static_lib:
        cmake_options.append( f"-DBUILD_SHARED_LIBS=OFF" )

    if args.build_clients:
        cmake_options.append( f"-DBUILD_CLIENTS=ON" )

    if args.cmake_dargs:
        for i in args.cmake_dargs:
          cmake_options.append( f"-D{i}" )

    cmake_options.append( f"{src_path}")

    return cmake_executable, cmake_options


def make_cmd():
    global args
    global OS_info

    make_options = []

    nproc = OS_info["NUM_PROC"]
    if os.name == "nt":
        make_executable = f"cmake.exe"
        make_options.extend(["--build", "."]) # ninja
        if args.verbose:
          make_options.append( "--verbose" )
        make_options.extend( ["--target", "all"] )
        if args.install:
          make_options.extend( ["--target", "package", "--target", "install"] )
    else:
        make_executable = f"make"
        make_options.append(f"-j{nproc}")
        if args.verbose:
          make_options.append( "VERBOSE=1" )
        if args.install:
         make_options.append( "install" )

    return make_executable, make_options

def run_cmd(exe, opts):
    program = [exe] + opts
    print(program)
    proc = subprocess.run(program, check=True, stderr=subprocess.STDOUT)
    return proc.returncode

def main():
    global args
    os_detect()
    args = parse_args()

    # configure
    exe, opts = config_cmd()
    run_cmd(exe, opts)

    # make
    exe, opts = make_cmd()
    run_cmd(exe, opts)

if __name__ == '__main__':
    main()