#   Copyright (c) 2020 PaddlePaddle Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

import os
import sys
import shutil
import subprocess
import platform

user_specified_dirs = ['@OPENCV_DIRECTORY@', '@ORT_DIRECTORY@', ]

def process_on_linux(current_dir):
    rpaths = ["$ORIGIN:$ORIGIN/libs"]
    fd_libs = list()
    libs_path = os.path.join(current_dir, "fastdeploy", "libs")
    for f in os.listdir(libs_path):
        filename = os.path.join(libs_path, f)
        if not os.path.isfile(filename):
            continue
        if f.count("fastdeploy") and f.count(".so") > 0:
            fd_libs.append(filename)

    cmake_build_dir = os.path.join(current_dir, ".setuptools-cmake-build")
    patchelf_bin_path = os.path.join(cmake_build_dir, "third_libs/patchelf/bin/patchelf")
    if not os.path.exists(patchelf_bin_path):
        patchelf_bin_path = "patchelf"

    third_libs_path = os.path.join(libs_path, "third_libs")

    # remove some useless opencv file in python wheels to decrease package size
    if os.path.exists(os.path.join(third_libs_path, "opencv")):
        for root, dirs, files in os.walk(os.path.join(third_libs_path, "opencv")):
            for f in files:
                items = f.strip().split('.')
                if len(items) != 4:
                    os.remove(os.path.join(root, f))
                    continue
                if items[0].strip() not in ["libopencv_highgui", "libopencv_video", "libopencv_videoio", "libopencv_imgcodecs", "libopencv_imgproc", "libopencv_core"]:
                    os.remove(os.path.join(root, f))

    all_libs_paths = [third_libs_path] + user_specified_dirs
    for path in all_libs_paths:
        for root, dirs, files in os.walk(path):
            for d in dirs:
                if d not in ["lib", "lib64"]:
                    continue
                rel_path = os.path.relpath(os.path.join(root, d), libs_path)
                if path in user_specified_dirs:
                    # Note(zhoushunjie): Use the absolute path for user_specified_dirs
                    rpath = os.path.join(root, d)
                else:
                    rpath = "$ORIGIN/" + rel_path
                rpaths.append(rpath)
    for lib in fd_libs:
        command = "{} --set-rpath '{}' {}".format(patchelf_bin_path, ":".join(rpaths), lib)
        if platform.machine() != 'sw_64' and platform.machine() != 'mips64':
            assert subprocess.Popen(
                command,
                shell=True) != 0, "patchelf {} failed, the command: {}".format(
                    command, lib)


def process_on_mac(current_dir):
    fd_libs = list()
    libs_path = os.path.join(current_dir, "fastdeploy", "libs")
    cmake_build_dir = os.path.join(current_dir, ".setuptools-cmake-build")
    for f in os.listdir(libs_path):
        filename = os.path.join(libs_path, f)
        if not os.path.isfile(filename):
            continue
        if f.count("fastdeploy") > 0 and (f.count(".dylib") > 0 or
                                          f.count(".so") > 0):
            fd_libs.append(filename)

    commands = list()
    pre_commands = list()
    for lib in fd_libs:
        if lib.count("fastdeploy_main") > 0:
            pre_commands.append(
                "install_name_tool -delete_rpath {} ".format(cmake_build_dir) + lib)
            commands.append("install_name_tool -id @loader_path " + lib)
            commands.append("install_name_tool -add_rpath @loader_path " + lib)

    third_libs_path = os.path.join(libs_path, "third_libs")
    cmake_third_libs_path = os.path.join(cmake_build_dir, "third_libs", "install")
    all_libs_paths = [cmake_third_libs_path] + user_specified_dirs
    for path in all_libs_paths:
        for root, dirs, files in os.walk(path):
            for d in dirs:
                if d not in ["lib", "lib64"]:
                    continue
                rel_path = os.path.relpath(os.path.join(root, d), cmake_third_libs_path)
                if path in user_specified_dirs:
                    # Note(zhoushunjie): Use the absolute path for user_specified_dirs
                    need_delete_rpath = os.path.join(root, d)
                    need_add_rpath = os.path.join(root, d)
                else:
                    need_delete_rpath = os.path.join(root, d)
                    need_add_rpath = "@loader_path/third_libs/" + rel_path
                for lib in fd_libs:
                    if lib.count("fastdeploy_main") > 0:
                        pre_commands.append(
                            "install_name_tool -delete_rpath {} {}".format(need_delete_rpath, lib))
                        commands.append(
                            "install_name_tool -add_rpath {} {}".format(need_add_rpath, lib))

    for command in pre_commands:
        try:
            os.system(command)
        except:
            print("Skip execute command: " + command)

    for command in commands:
        assert os.system(
            command) == 0, "command execute failed! command: {}".format(
            command)

def process_on_windows(current_dir):
    libs_path = os.path.join(current_dir, "fastdeploy", "libs")
    third_libs_path = os.path.join(libs_path, "third_libs")
    for root, dirs, files in os.walk(third_libs_path):
        for f in files:
            file_path = os.path.join(root, f)
            if f.count('onnxruntime') > 0 and f.endswith('.dll'):
                shutil.copy(file_path, libs_path)


def get_all_files(dirname):
    files = list()
    for root, dirs, filenames in os.walk(dirname):
        for f in filenames:
            fullname = os.path.join(root, f)
            files.append(fullname)
    return files


def process_libraries(current_dir):
    if platform.system().lower() == "linux":
        process_on_linux(current_dir)
    elif platform.system().lower() == "darwin":
        process_on_mac(current_dir)
    elif platform.system().lower() == "windows":
        process_on_windows(current_dir)

    all_files = get_all_files(os.path.join(current_dir, "fastdeploy", "libs"))
    package_data = list()

    if platform.system().lower() == "windows":

        def check_windows_legal_file(f):
            # Note(zhoushunjie): Special case for some library
            # File 'plugins.xml' is special case of openvino.
            for special_file in ['plugins.xml']:
                if special_file in f:
                    return True
            return False

        for f in all_files:
            if f.endswith(".pyd") or f.endswith("lib") or f.endswith(
                    "dll") or check_windows_legal_file(f):
                package_data.append(
                    os.path.relpath(f, os.path.join(current_dir,
                                                    "fastdeploy")))

        return package_data

    filters = [".vcxproj", ".png", ".java", ".h", ".cc", ".cpp", ".hpp"]
    for f in all_files:
        remain = True
        for flt in filters:
            if f.count(flt) > 0:
                remain = False
        filename = os.path.split(f)[-1]
# Note(zhoushunjie): To add the trt libs below will increase the size of whl package by 450M.
#        if filename in [
#                "libnvinfer_plugin.so",
#                "libnvinfer.so", "libnvonnxparser.so",
#                "libnvparsers.so", "libnvcaffe_parser.so"
#        ]:
#            continue

        for lib_prefix in ["libnvinfer_plugin.so.8.",
            "libnvinfer.so.8.", "libnvonnxparser.so.8.",
            "libnvparsers.so.8.", "libnvcaffe_parser.so.8."]:
            if filename.startswith(lib_prefix):
                remain = False
                break

        if remain:
            package_data.append(
                os.path.relpath(f, os.path.join(current_dir, "fastdeploy")))
    return package_data