#!/usr/bin/env python
# -*- coding: UTF-8 -*-

import sys
import os
import argparse
import shutil
import stat
import traceback

def cleanTempModel(optimizedModelTempDir):
    """ 清理opt优化完的临时模型文件 """
    if os.path.exists(optimizedModelTempDir):
        print("Cleaning optimized temporary model...")
        shutil.rmtree(optimizedModelTempDir, onerror=grantWritePermission)

def grantWritePermission(func, path, execinfo):
    """ 文件授权 """
    os.chmod(path, stat.S_IWRITE)
    func(path)


if __name__ == "__main__":
    """
    Example:
    'python convertToPaddleJSModel.py --modelPath=../infer_model/MobileNetV2/model --paramPath=../infer_model/MobileNetV2/params --outputDir=../jsmodel --optimize=1'
    """
    try:
        p = argparse.ArgumentParser(description='转化为PaddleJS模型参数解析')
        p.add_argument('--inputDir', help='fluid模型所在目录。当且仅当使用分片参数文件时使用该参数。将过滤modelPath和paramsPath参数，且模型文件名必须为`__model__`', required=False)
        p.add_argument('--modelPath', help='fluid模型文件所在路径，使用合并参数文件时使用该参数', required=False)
        p.add_argument('--paramPath', help='fluid参数文件所在路径，使用合并参数文件时使用该参数', required=False)
        p.add_argument("--outputDir", help='paddleJS模型输出路径，必要参数', required=True)
        p.add_argument("--optimize", type=int, default=0, help='是否进行模型优化，非必要参数，0为关闭优化，1为开启优化，默认关闭优化', required=False)
        p.add_argument("--logModelInfo", type=int, default=0, help='是否输出模型结构信息，非必要参数，0为不输出，1为输出，默认不输出', required=False)
        p.add_argument("--sliceDataSize", type=int, default=4096, help='分片输出参数文件时，每片文件的大小，单位：KB，非必要参数，默认4096KB', required=False)
        
        args = p.parse_args()

        # TODO: 由于PaddleLite和PaddlePaddle存在包冲突，因此将整个模型转换工具拆成两个python文件，由一个入口python文件通过命令行调用
        optimizeCmd = " optimizeModel.py"
        convertCmd = " convertModel.py"

        inputDir = args.inputDir
        modelPath = args.modelPath
        paramPath = args.paramPath
        outputDir = args.outputDir
        enableOptimization = args.optimize
        enableLogModelInfo = args.logModelInfo
        sliceDataSize = args.sliceDataSize

        optimizedModelTempDir = None
        if enableOptimization == 1:
            optimizedModelTempDir = os.path.join(outputDir, "optimize")
            if inputDir:
                optimizeCmd = optimizeCmd + " --inputDir=" + inputDir
                convertCmd = convertCmd + " --inputDir=" + optimizedModelTempDir
            else:
                optimizeCmd = optimizeCmd + " --modelPath=" + modelPath + " --paramPath=" + paramPath
                # optimizeModelPath, modelName = os.path.split(modelPath)
                # optimizeParamPath, paramName = os.path.split(paramPath)
                optimizeModelPath = os.path.join(optimizedModelTempDir, "model")
                optimizeParamPath = os.path.join(optimizedModelTempDir, "params")
                convertCmd = convertCmd + " --modelPath=" + optimizeModelPath + " --paramPath=" + optimizeParamPath
            optimizeCmd = optimizeCmd + " --outputDir=" + optimizedModelTempDir
        else:
            if inputDir:
                convertCmd = convertCmd + " --inputDir=" + inputDir
            else:
                convertCmd = convertCmd + " --modelPath=" + modelPath + " --paramPath=" + paramPath

        convertCmd = convertCmd + " --outputDir=" + outputDir + " --sliceDataSize=" + str(sliceDataSize) + " --logModelInfo=" + str(args.logModelInfo)

        print("============Convert Model Args=============")
        if inputDir:
            print("inputDir: " + inputDir)
        else:
            print("modelPath: " + modelPath)
            print("paramPath: " + paramPath)
        print("outputDir: " + outputDir)
        print("enableOptimizeModel: " + str(enableOptimization))
        print("enableLogModelInfo: " + str(enableLogModelInfo))
        print("sliceDataSize:" + str(sliceDataSize))

        pythonCmd = "python3"

        print("Starting...")
        if enableOptimization:
            print("Optimizing model...")
            os.system(pythonCmd + optimizeCmd)
            print("\033[32m\nOptimizing model successfully.\033[0m")
        else:
            print("\033[33mYou choosed not to optimize model, consequently, optimizing model is skiped.\033[0m")

        print("Converting model...")
        os.system(pythonCmd + convertCmd)
        print("\033[32mConverting model successfully.\033[0m")
        
        if enableOptimization:
            cleanTempModel(optimizedModelTempDir)
            print("Temporary files has been deleted successfully.")
        print("\033[32m============ALL DONE============\033[0m")

    except Exception as identifier:
        print("\033[31mA fetal error occured. Failed to convert model.\033[0m")
        print(traceback.format_exc())
        pass