#!/usr/bin/env python3
"""
Helper script for running Sandcrawler (journal pipeline) tasks in production.

This is basically a Makefile. Be sure to only use python3 standard library
modules, so there are no dependencies.
"""

import sys
import argparse
import subprocess
from datetime import datetime

HDFS_OUT_DIR = "/user/bnewbold/sandcrawler/out"
HBASE_HOST = "wbgrp-svc263.us.archive.org"

def run_backfill(args):
    output = "hdfs://{}/{}/{}-backfill".format(
        HDFS_OUT_DIR,
        args.env,
        datetime.strftime(datetime.now(), "%Y-%m-%d-%H:%M:%S"))
    cmd = """hadoop jar \
        scalding/target/scala-2.11/sandcrawler-assembly-0.2.0-SNAPSHOT.jar \
        com.twitter.scalding.Tool sandcrawler.HBaseRowCountJob --hdfs \
        --app.conf.path scalding/ia_cluster.conf \
        --output hdfs://{}""".format(output)


    cmd = """cd mapreduce;
        pipenv shell
        export VENVSHORT=`basename $VIRTUAL_ENV`
        ./backfill_hbase_from_cdx.py \
            --hbase-host {HBASE_HOST} \
            --hbase-table wbgrp-journal-extract-0-{args.env} \
            -r hadoop \
            -c mrjob.conf \
            --archive $VENVSHORT.tar.gz#venv \
            {args.input_cdx}
            """.format()
    subprocess.call(cmd, shell=True)

def run_rowcount(args):
    output = "hdfs://{}/{}/{}-rowcount".format(
        HDFS_OUT_DIR,
        args.env,
        datetime.strftime(datetime.now(), "%Y-%m-%d-%H:%M:%S"))
    cmd = """hadoop jar \
        scalding/target/scala-2.11/sandcrawler-assembly-0.2.0-SNAPSHOT.jar \
        com.twitter.scalding.Tool sandcrawler.HBaseRowCountJob --hdfs \
        --app.conf.path scalding/ia_cluster.conf \
        --output hdfs://{}""".format(output)
    subprocess.call(cmd, shell=True)

def main():
    parser = argparse.ArgumentParser()

    parser.add_argument('--prod',
        help="run against prod HBase table",
        action='store_true')
    parser.add_argument('--qa',
        help="run against qa HBase table",
        action='store_true')
    subparsers = parser.add_subparsers()

    sub_backfill = subparsers.add_parser('backfill')
    sub_backfill.set_defaults(func=run_backfill)
    sub_backfill.add_argument('input_cdx',
        help="full HDFS path of CDX file to backfill")

    sub_rowcount = subparsers.add_parser('row-count')
    sub_rowcount.set_defaults(func=run_rowcount)

    args = parser.parse_args()
    if not args.__dict__.get("func"):
        print("tell me what to do! (try --help)")
        sys.exit(-1)
    if not (args.prod or args.qa) or (args.prod and args.qa):
        print("must pass one of --prod or --qa")
    if args.prod:
        args.env = "prod"
    if args.qa:
        args.env = "qa"
    args.func(args)

if __name__ == '__main__':
    main()