#!/bin/bash

toolName="Mayan EDMS"
toolRoot="/opt/mayan-edms"
toolMediaFolder="/opt/mayan-edms/media"

# Needed for different steps
postgresDb=""
postgresUser=""
postgresPass=""

step_1_info() { echo "Install libreoffice without gui"; }
step_1() {
  exe apt update
  exe apt --no-install-recommends install libreoffice -y
}

step_2_info() { echo "Get $toolName binary dependencies"; }
step_2() {
  exe apt install g++ gcc ghostscript gnupg1 graphviz libfuse2 \
  libjpeg-dev libmagic1 libpq-dev libpng-dev libtiff-dev \
  poppler-utils postgresql python-dev python-virtualenv redis-server \
  sane-utils supervisor tesseract-ocr tesseract-ocr-deu zlib1g-dev -y
}

step_3_info() { echo "Create virtual environment"; }
step_3() {
  exe adduser mayan --disabled-password --disabled-login --no-create-home --gecos -G users""
  exe mkdir -p ${toolRoot}
  exe virtualenv ${toolRoot}
  saveReturn $?
  endReturn 
  exe chown -R mayan:mayan ${toolRoot}
}

step_4_info() { echo "Create postgres database for $toolName"; }
step_4_alias() { ALIAS="createdb"; }
step_4() {
  readDatabaseInfos
  
  exe sudo -u postgres psql -c "CREATE USER ${postgresUser} WITH password '${postgresPass}';"
  # -O owner : Specifies the database user who will own the new database.
  exe sudo -u postgres createdb -O ${postgresUser} ${postgresDb}
}

step_5_info() { echo "Install $toolName"; }
step_5() {
  exe sudo -u mayan ${toolRoot}/bin/pip install --no-cache-dir --no-use-pep517 mayan-edms
  saveReturn $?
  endReturn 
  exe sudo -u mayan ${toolRoot}/bin/pip install --no-cache-dir --no-use-pep517 psycopg2==2.7.3.2 redis==2.10.6
  saveReturn $?
  endReturn 

  readDatabaseInfos
  
  exe sudo -u mayan MAYAN_DATABASE_ENGINE=django.db.backends.postgresql MAYAN_DATABASE_NAME=${postgresDb} \
  MAYAN_DATABASE_PASSWORD="${postgresPass}" MAYAN_DATABASE_USER=${postgresUser} \
  MAYAN_DATABASE_HOST=127.0.0.1 MAYAN_MEDIA_ROOT=${toolMediaFolder} \
  ${toolRoot}/bin/mayan-edms.py initialsetup

  exe sudo -u mayan MAYAN_MEDIA_ROOT=${toolMediaFolder} \
  ${toolRoot}/bin/mayan-edms.py collectstatic --noinput
}

step_6_info() { echo "$toolName configuration file"; }
step_6() {
  readDatabaseInfos
  addConf -c "$supervisorFile" "$supervisorFileLoc"
  addConf -a "$redisConf" "$redisConfLoc"
  
  exe systemctl restart redis

  exe systemctl enable supervisor
  exe systemctl restart supervisor
}

redisConfLoc="/etc/redis/redis.conf"
redisConf="\
maxmemory-policy allkeys-lru
save \"\"
databases 1"
supervisorFileLoc="/etc/supervisor/conf.d/mayan.conf"
supervisorFile="\
[supervisord]
environment=
    MAYAN_ALLOWED_HOSTS='[\"*\"]',  # Allow access to other network hosts other than localhost
    MAYAN_CELERY_RESULT_BACKEND=\"redis://127.0.0.1:6379/0\",
    MAYAN_BROKER_URL=\"redis://127.0.0.1:6379/0\",
    PYTHONPATH=${toolRoot}/lib/python2.7/site-packages:${toolRoot}/data,
    MAYAN_MEDIA_ROOT=${toolMediaFolder},
    MAYAN_DATABASE_ENGINE=django.db.backends.postgresql,
    MAYAN_DATABASE_HOST=127.0.0.1,
    MAYAN_DATABASE_NAME=${postgresDb},
    MAYAN_DATABASE_PASSWORD=\"${postgresPass}\",
    MAYAN_DATABASE_USER=${postgresUser},
    MAYAN_DATABASE_CONN_MAX_AGE=60,
    DJANGO_SETTINGS_MODULE=mayan.settings.production

[program:mayan-gunicorn]
autorestart = true
autostart = true
command = ${toolRoot}/bin/gunicorn -w 2 mayan.wsgi --max-requests 500 --max-requests-jitter 50 --worker-class gevent --bind 0.0.0.0:8000 --timeout 120
user = mayan

[program:mayan-worker-fast]
autorestart = true
autostart = true
command = nice -n 1 ${toolRoot}/bin/mayan-edms.py celery worker -Ofair -l ERROR -Q converter,sources_fast -n mayan-worker-fast.%%h --concurrency=1
killasgroup = true
numprocs = 1
priority = 998
startsecs = 10
stopwaitsecs = 1
user = mayan

[program:mayan-worker-medium]
autorestart = true
autostart = true
command = nice -n 18 ${toolRoot}/bin/mayan-edms.py celery worker -Ofair -l ERROR -Q checkouts_periodic,documents_periodic,indexing,metadata,sources,sources_periodic,uploads,documents -n mayan-worker-medium.%%h --concurrency=1
killasgroup = true
numprocs = 1
priority = 998
startsecs = 10
stopwaitsecs = 1
user = mayan

[program:mayan-worker-slow]
autorestart = true
autostart = true
command = nice -n 19 ${toolRoot}/bin/mayan-edms.py celery worker -Ofair -l ERROR -Q mailing,tools,statistics,parsing,ocr -n mayan-worker-slow.%%h --concurrency=1
killasgroup = true
numprocs = 1
priority = 998
startsecs = 10
stopwaitsecs = 1
user = mayan

[program:mayan-celery-beat]
autorestart = true
autostart = true
command = nice -n 1 ${toolRoot}/bin/mayan-edms.py celery beat --pidfile= -l ERROR
killasgroup = true
numprocs = 1
priority = 998
startsecs = 10
stopwaitsecs = 1
user = mayan"

step_20_info() { echo "Backup postgres database to media folder"; }
step_20_alias() { ALIAS=backupdb; }
step_20() {
  local LASTYEAR=$(($(date +%Y)-1))
  if [ ! -s ~/.pgpass ] ; then
    echo "[INFO] For unattended backup please define ~/.pgpass containing credentials for user mayan"
  fi
  echo "Backup custom pg format with standard user / database: mayan / mayan"
  exep "pg_dump -h 127.0.0.1 -U mayan -Fc mayan | bzip2 -c > ${toolDbBackupFolder}/`date +%Y-%m-%d\"_\"%H-%M-%S`.backup.bz2"
  exe rm -f ${toolDbBackupFolder}/${LASTYEAR}*
}
toolDbBackupFolder=${toolMediaFolder}/backupdb


step_22_info() { echo "Postgres database restore"; }
step_22() {
  echo "1. Create a empty postgres database first (step 4)"
  echo "2. psql -h <host> -U <database user> -d <database name> -W -f <sql dump file>"
  echo "   e.g.  psql -h 127.0.0.1 -U mayan -d mayan -W -f 2018-06-07_18-10-56.sql"
  echo "or"
  echo "3. Custom postgres format dump restore:"
  echo "   pg_restore -h localhost -p 5432 -U mayan -d new_db -v \"10.70.0.61.backup\""
}

# Read postgres database information dbname/user/pass if empty
readDatabaseInfos() {
  if [ "$postgresDb" == "" ] ; then
    read -p "Enter postgres database name: " postgresDb
    endCheckEmpty postgresDb "database"
  fi
  if [ "$postgresUser" == "" ] ; then
    read -p "Enter postgres user name: " postgresUser
    endCheckEmpty postgresUser "user name"
  fi
  if [ "$postgresPass" == "" ] ; then
    read -p "Enter postgres password: " postgresPass
    endCheckEmpty postgresPass "password"
  fi
}

VERSION_SEQREV=3
. sequencer.sh