#!/usr/bin/python

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# Licensed to the Apache Software Foundation (ASF) under one
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# to you under the Apache License, Version 2.0 (the
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# with the License.  You may obtain a copy of the License at
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#   http://www.apache.org/licenses/LICENSE-2.0
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import argparse
import json
import sys
from dlab.notebook_lib import *
from dlab.actions_lib import *
from dlab.fab import *
import os

parser = argparse.ArgumentParser()
parser.add_argument('--hostname', type=str, default='')
parser.add_argument('--keyfile', type=str, default='')
parser.add_argument('--region', type=str, default='')
parser.add_argument('--spark_version', type=str, default='')
parser.add_argument('--hadoop_version', type=str, default='')
parser.add_argument('--os_user', type=str, default='')
parser.add_argument('--scala_version', type=str, default='')
parser.add_argument('--r_mirror', type=str, default='')
parser.add_argument('--ip_address', type=str, default='')
parser.add_argument('--exploratory_name', type=str, default='')
parser.add_argument('--edge_ip', type=str, default='')
args = parser.parse_args()

spark_version = args.spark_version
hadoop_version = args.hadoop_version
jupyter_version = os.environ['notebook_jupyter_version']
scala_link = "http://www.scala-lang.org/files/archive/"
if args.region == 'cn-north-1':
    spark_link = "http://mirrors.hust.edu.cn/apache/spark/spark-" + spark_version + "/spark-" + spark_version + \
                 "-bin-hadoop" + hadoop_version + ".tgz"
else:
    spark_link = "https://archive.apache.org/dist/spark/spark-" + spark_version + "/spark-" + spark_version + \
                 "-bin-hadoop" + hadoop_version + ".tgz"

pyspark_local_path_dir = '/home/' + args.os_user + '/.local/share/jupyter/kernels/pyspark_local/'
py3spark_local_path_dir = '/home/' + args.os_user + '/.local/share/jupyter/kernels/py3spark_local/'
jupyter_conf_file = '/home/' + args.os_user + '/.local/share/jupyter/jupyter_notebook_config.py'
scala_kernel_path = '/usr/local/share/jupyter/kernels/apache_toree_scala/'
r_kernels_dir = '/home/' + args.os_user + '/.local/share/jupyter/kernels/'
jars_dir = '/opt/jars/'
templates_dir = '/root/templates/'
files_dir = '/root/files/'
local_spark_path = '/opt/spark/'
toree_link = 'http://archive.apache.org/dist/incubator/toree/0.2.0-incubating/toree-pip/toree-0.2.0.tar.gz'
r_libs = ['R6', 'pbdZMQ', 'RCurl', 'devtools', 'reshape2', 'caTools', 'rJava', 'ggplot2']
gitlab_certfile = os.environ['conf_gitlab_certfile']


##############
# Run script #
##############
if __name__ == "__main__":
    print("Configure connections")
    env['connection_attempts'] = 100
    env.key_filename = [args.keyfile]
    env.host_string = args.os_user + '@' + args.hostname

    # PREPARE DISK
    print("Prepare .ensure directory")
    try:
        if not exists('/home/' + args.os_user + '/.ensure_dir'):
            sudo('mkdir /home/' + args.os_user + '/.ensure_dir')
    except:
        sys.exit(1)
    print("Mount additional volume")
    prepare_disk(args.os_user)

    # INSTALL LANGUAGES
    print("Install Java")
    ensure_jre_jdk(args.os_user)
    print("Install Scala")
    ensure_scala(scala_link, args.scala_version, args.os_user)
    if os.environ['notebook_r_enabled'] == 'true':
        print("Installing R")
        ensure_r(args.os_user, r_libs, args.region, args.r_mirror)
    print("Install Python 2 modules")
    ensure_python2_libraries(args.os_user)
    print("Install Python 3 modules")
    ensure_python3_libraries(args.os_user)

    # INSTALL JUPYTER NOTEBOOK
    print("Install Jupyter")
    configure_jupyter(args.os_user, jupyter_conf_file, templates_dir, jupyter_version, args.exploratory_name)

    # INSTALL SPARK AND CLOUD STORAGE JARS FOR SPARK
    print("Install local Spark")
    ensure_local_spark(args.os_user, spark_link, spark_version, hadoop_version, local_spark_path)
    local_spark_scala_version = sudo('spark-submit --version 2>&1 | grep -o -P "Scala version \K.{0,7}"')
    print("Install storage jars")
    ensure_local_jars(args.os_user, jars_dir)
    print("Configure local Spark")
    configure_local_spark(jars_dir, templates_dir)

    # INSTALL JUPYTER KERNELS
    print("Install pyspark local kernel for Jupyter")
    ensure_pyspark_local_kernel(args.os_user, pyspark_local_path_dir, templates_dir, spark_version)
    print("Install py3spark local kernel for Jupyter")
    ensure_py3spark_local_kernel(args.os_user, py3spark_local_path_dir, templates_dir, spark_version)
    print("Install Toree-Scala kernel for Jupyter")
    ensure_toree_local_kernel(args.os_user, toree_link, scala_kernel_path, files_dir, local_spark_scala_version, spark_version)
    if os.environ['notebook_r_enabled'] == 'true':
        print("Install R kernel for Jupyter")
        ensure_r_local_kernel(spark_version, args.os_user, templates_dir, r_kernels_dir)

    # INSTALL UNGIT
    print("Install nodejs")
    install_nodejs(args.os_user)
    print("Install ungit")
    install_ungit(args.os_user, args.exploratory_name, args.edge_ip)
    if exists('/home/{0}/{1}'.format(args.os_user, gitlab_certfile)):
        install_gitlab_cert(args.os_user, gitlab_certfile)

    # INSTALL INACTIVITY CHECKER
    print("Install inactivity checker")
    install_inactivity_checker(args.os_user, args.ip_address)

    # INSTALL OPTIONAL PACKAGES
    print("Installing additional Python packages")
    ensure_additional_python_libs(args.os_user)
    print("Install Matplotlib")
    ensure_matplot(args.os_user)
    print("Install SBT")
    ensure_sbt(args.os_user)
    print("Install Breeze")
    add_breeze_library_local(args.os_user)

    #POST INSTALLATION PROCESS
    print("Updating pyOpenSSL library")
    update_pyopenssl_lib(args.os_user)