# -*- coding:utf-8 -*-
import time
import sys
import os
import json
import subprocess

'''
    配置全局变量
'''
JSONFILE = None
SHELLFILE = None
print(sys.argv[0])  # sys.argv[0] 类似于shell中的$0,但不是脚本名称，而是脚本的路径
if len(sys.argv) == 2:
    JSONFILE = sys.argv[1]  # 表示Json参数文件路径;
if len(sys.argv) == 3:
    SHELLFILE = sys.argv[2]  # 表示Shell脚本文件路径;

# 源码路径
CODE_DIR = None
# 脚本名称;
SCRIPT_NAME = None
# 编译前的参数
PREV_ARG = None
# 脚本参数
SCRIPT_ARG = None
# 编译后的参数
AFTER_ARG = None
# 源码目录名称;
CODE_FOLDER_NAME = None


# 解析json文件;
def loadJson():
    global CODE_DIR
    global PREV_ARG
    global JSONFILE
    global SCRIPT_ARG
    global AFTER_ARG
    global SCRIPT_NAME
    global CODE_FOLDER_NAME
    print(u"loadJson")
    if JSONFILE is None or JSONFILE.__len__() == 0:
        print(u"use default josn arg")
        JSONFILE=sys.path[0]+"/arg.json"
        #JSONFILE = "arg.json"

    if os.path.exists(JSONFILE) is False:
        print(u"json file doesn't exist")
        return False

    try:
        data = open(JSONFILE, 'r')
        args = json.load(data)
    except Exception as e:
        print("An error occurred:"+e)
        return False

    print(args['pre-compile'])
    print(args['after-compile'])
    print(args['compile'])

    CODE_DIR = args['code-dir']
    CODE_FOLDER_NAME = CODE_DIR.split('/')[-1]
    SCRIPT_NAME = args['compile-script']
    PREV_ARG = args['pre-compile']
    SCRIPT_ARG = args['compile']
    AFTER_ARG = args['after-compile']

    return True


# 不使用重定向;
def cmdExecute2(cmd,dir=os.getcwd()):
    # 定义文件名称;
    file_name = str(time.time())
    proc = subprocess.Popen(cmd, shell=True, cwd=dir)
    # 等待完成;
    proc.wait()


def cmdExecute(cmd, dir=None):
    print(cmd)
    proc = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=True, cwd=dir)
    # 等待完成;
    stdout,stderr = proc.communicate()
    if proc.returncode == 0:
        print(u'cmd finished')
    # 返回执行结果;
    print(stdout)
    return stdout


def prev_compile():
    global PREV_ARG
    global CODE_DIR
    if PREV_ARG is None or PREV_ARG.__len__() == 0:
        print("prev args is empty")
        return False
    
    # 更新代码;
    commands=None
    if PREV_ARG['sync']:
        commands = str.format("cd %s;repo sync") % CODE_DIR
        cmdExecute(commands, CODE_DIR)
    
    # 重新下载;
    commands=[]
    if PREV_ARG['redownload']:
        commands.append(str.format("rm -rf %s") % CODE_DIR)
        commands.append(str.format("cd %s") % os.getcwd())
        commands.append(str.format("mkdir %s") % CODE_FOLDER_NAME)
        commands.append(str.format("cd %s" % CODE_DIR))
        commands.append(str.format("repo init -u %s") % (PREV_ARG['branch-addr']))
        commands.append("repo sync")   
        commandline=';'.join(commands)
        cmdExecute(commandline)


def call_script():
    global SCRIPT_ARG
    if SCRIPT_ARG is None or SCRIPT_ARG.__len__() == 0:
        print("script args is empty")
        return False

    # 生成命令行参数;
    commandline = ''
    for item in SCRIPT_ARG:
        line = str.format("%s=%s ") % (item, SCRIPT_ARG[item])
        commandline = commandline + line
    
    print("script args is:"+commandline)

    if commandline.__len__() == 0 or commandline.index("=") == -1:
        print("commandline is empty or format error!")
        return False

    print("start to compile")
    cmdExecute(str.format("cd %s;chmod 777 %s;./%s %s")%(CODE_DIR,SCRIPT_NAME,SCRIPT_NAME,commandline), CODE_DIR)

    return True


def after_compile():
    global AFTER_ARG
    if AFTER_ARG is None or AFTER_ARG.__len__() == 0:
        print("after args is empty")
        return False


if __name__ == "__main__":
    # os.system('cd ~/2851M; ls -al; repo sync') # 可用命令格式;
    # subprocess.call('cd ~;ls -al;cd ~/2851M; ls -al; repo sync', shell=True)
    # subprocess.call(["cd ~", "ls -al","cd ~/2851M", "ls -al", "repo sync"], shell=False) 错误的执行方式;
    ret = loadJson()
    if ret is True:
        prev_compile()
        call_script()
        after_compile()
    else:
        print(u"doesn't build")