#!/usr/bin/python3
"""Copyright (C) 2020-2021 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 cop-
ies 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 IM-
PLIED, 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 CONNE-
CTION 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
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(      '--skip_ld_conf_entry', required=False, default=False)
    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', action='append', default=[],
                        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)')
    # hipsolver
    parser.add_argument(     '--rocblas-path', dest='rocblas_path', type=str, required=False, default = "",
                        help='Set specific path to custom built rocblas (optional, default: /opt/rocm/rocblas)')
    parser.add_argument(     '--rocsolver-path', dest='rocsolver_path', type=str, required=False, default = "",
                        help='Set specific path to custom built rocsolver (optional, default: /opt/rocm/rocsolver)')

    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)
    return

def delete_dir(dir_path) :
    if (not os.path.exists(dir_path)):
        return
    if os.name == "nt":
        run_cmd( "RMDIR" , f"/S /Q {dir_path}")
    else:
        run_cmd( "rm" , f"-rf {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_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")
        cmake_executable = "cmake"
        #set CPACK_PACKAGING_INSTALL_PREFIX= defined as blank as it is appended to end of path for archive creation
        cmake_platform_opts.append( "-DCPACK_PACKAGING_INSTALL_PREFIX=" )
        cmake_platform_opts.append( "-DCMAKE_INSTALL_PREFIX=C:/hipSDK" )
        lapack_dir = os.getenv("LAPACK_DIR")
        cblas_dir = os.getenv("cblas_DIR")
        if cblas_dir is None and lapack_dir is not None:
            cmake_platform_opts.append( f"-Dcblas_DIR={lapack_dir}")
        cmake_platform_opts.append('-DCMAKE_CXX_COMPILER=clang++.exe')
        cmake_platform_opts.append('-DCMAKE_C_COMPILER=clang.exe')
        if os.getenv("NO_VCPKG") is None:
            vcpkg_path =  pathlib.Path(os.getenv("VCPKG_PATH", "C:/github/vcpkg"))
            vcpkg_toolchain = vcpkg_path / 'scripts/buildsystems/vcpkg.cmake'
            cmake_options.append(f"-DCMAKE_TOOLCHAIN_FILE={vcpkg_toolchain.as_posix()} -DVCPKG_TARGET_TRIPLET=x64-windows")
        cmake_options.append("-DCMAKE_STATIC_LIBRARY_SUFFIX=.a")
        cmake_options.append("-DCMAKE_STATIC_LIBRARY_PREFIX=static_")
        cmake_options.append("-DCMAKE_SHARED_LIBRARY_SUFFIX=.dll")
        cmake_options.append("-DCMAKE_SHARED_LIBRARY_PREFIX=")
        cmake_options.append("-G Ninja")
    else:
        rocm_path = os.getenv( 'ROCM_PATH', "/opt/rocm")
        cmake_executable = "cmake"
        cmake_platform_opts.append( f"-DROCM_DIR:PATH={rocm_path} -DCPACK_PACKAGING_INSTALL_PREFIX={rocm_path}" )
        cmake_platform_opts.append("-DCMAKE_INSTALL_PREFIX=hipsolver-install")

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

    cmake_options.extend( cmake_platform_opts )

    cmake_base_options = f"-DROCM_PATH={rocm_path} -DCMAKE_PREFIX_PATH:PATH={rocm_path}"
    cmake_options.append( 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("-DBUILD_SHARED_LIBS=OFF" )

    if args.skip_ld_conf_entry:
        cmake_options.append("-DROCM_DISABLE_LDCONFIG=ON" )

    if args.build_clients:
        cmake_build_dir = cmake_path(build_dir)
        cmake_options.append("-DBUILD_CLIENTS_TESTS=ON -DBUILD_CLIENTS_BENCHMARKS=ON -DBUILD_CLIENTS_SAMPLES=ON" )

    if args.rocsolver_path:
        cmake_options.append("-DCUSTOM_ROCSOLVER=" + cmake_path(args.rocsolver_path))
        os.environ['rocsolver_DIR'] = cmake_path(args.rocsolver_path)

    if args.rocblas_path:
        cmake_options.append("-DCUSTOM_ROCBLAS=" + cmake_path(args.rocblas_path))
        os.environ['rocblas_DIR'] = cmake_path(args.rocblas_path)

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

    cmake_options.append( f"{src_path}")
    cmd_opts = " ".join(cmake_options)

    try:
        os.environ['HIP_DIR'] = cmake_path(os.environ['HIP_DIR'])
    except:
        pass

    return cmake_executable, cmd_opts


def make_cmd():
    global args
    global OS_info

    make_options = []

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

    return make_executable, cmd_opts

def run_cmd(exe, opts):
    program = f"{exe} {opts}"
    print(program)
    proc = subprocess.run(program, check=True, stderr=subprocess.STDOUT, shell=True)
    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()