#!/bin/bash

SOURCE_DIR=$(realpath $(dirname "${0}"))

# Install dependencies for Sahana
apt-get -y --no-install-recommends install python-dateutil python-imaging python-lxml python-matplotlib python-openid python-psycopg2 python-pyth python-reportlab python-requests python-shapely python-tweepy python-xlrd python-xlwt

# Install web2py
git clone --recursive https://github.com/web2py/web2py.git /srv/sahana
git -C /srv/sahana checkout cda35fd
git -C /srv/sahana submodule update

# Install Sahana
git clone --depth 1 https://github.com/sahana/eden.git /srv/sahana/applications/eden

# Copy Czech language file
cp ${SOURCE_DIR}/sahana/srv/sahana/applications/eden/languages/cs.py /srv/sahana/applications/eden/languages/cs.py

# Symlink fonts with Czech glyphs
ln -s /usr/share/fonts/truetype/dejavu/DejaVuSerif-Bold.ttf /srv/sahana/applications/eden/static/fonts/DejaVuSerif-Bold.ttf
ln -s /usr/share/fonts/truetype/dejavu/DejaVuSerif.ttf /srv/sahana/applications/eden/static/fonts/DejaVuSerif.ttf

# Create PostgreSQL user and database
export SAHANA_PWD=$(head -c 18 /dev/urandom | base64)
envsubst <${SOURCE_DIR}/sahana/tmp/sahana-createdb.sql >/tmp/sahana-createdb.sql
sudo -u postgres psql -f /tmp/sahana-createdb.sql
rm -f /tmp/sahana-createdb.sql

# Configure web2py
rm -rf /srv/sahana/applications/{admin,examples,welcome}
cp ${SOURCE_DIR}/sahana/srv/sahana/routes.py /srv/sahana/routes.py
cp ${SOURCE_DIR}/sahana/srv/sahana/run_scheduler.py /srv/sahana/run_scheduler.py
ln -s /srv/sahana/handlers/wsgihandler.py /srv/sahana/wsgihandler.py

# Configure Sahana
mkdir /srv/sahana/applications/eden/{databases,errors,sessions}
mkdir -p /srv/sahana/applications/eden/static/cache/chart
mkdir -p /srv/sahana/applications/eden/uploads/{gis_cache,images,tracks}
export SAHANA_HMAC=$(head -c 18 /dev/urandom | base64)
envsubst <${SOURCE_DIR}/sahana/srv/sahana/applications/eden/models/000_config.py >/srv/sahana/applications/eden/models/000_config.py
cp {SOURCE_DIR}/sahana/srv/sahana/applications/eden/models/00_settings.py /srv/sahana/applications/eden/models/00_settings.py
export SAHANA_ADMIN_USER=admin@example.com
export SAHANA_ADMIN_PWD=$(head -c 12 /dev/urandom | base64)
cp ${SOURCE_DIR}/sahana/srv/sahana/applications/eden/modules/templates/default/config.py /srv/sahana/applications/eden/modules/templates/default/config.py
envsubst <${SOURCE_DIR}/sahana/srv/sahana/applications/eden/modules/templates/default/users/masterUsers.csv >/srv/sahana/applications/eden/modules/templates/default/users/masterUsers.csv

# Create OS user
adduser --system --group --home /srv/sahana --shell /bin/false sahana
chown -R sahana:sahana /srv/sahana

# Populate database
cd /srv/sahana
sudo -u sahana python web2py.py -S eden -M -R applications/eden/static/scripts/tools/noop.py

# Set "production values" (increases performance). Only if the DEBUG environment variable doesn't exist
if [ -z "${DEBUG}" ]; then
    sed -i 's/settings.base.migrate = True/settings.base.migrate = False/' /srv/sahana/applications/eden/models/000_config.py
    sed -i 's/settings.base.debug = True/settings.base.debug = False/' /srv/sahana/applications/eden/models/000_config.py
    sed -i 's/#settings.base.prepopulate = 0/settings.base.prepopulate = 0/' /srv/sahana/applications/eden/models/000_config.py
    sudo -u sahana python web2py.py -S eden -M -R applications/eden/static/scripts/tools/compile.py
fi

# Create uwsgi and nginx app definition
cp ${SOURCE_DIR}/sahana/etc/uwsgi/apps-available/sahana.ini /etc/uwsgi/apps-available/sahana.ini
ln -s /etc/uwsgi/apps-available/sahana.ini /etc/uwsgi/apps-enabled/sahana.ini
cp ${SOURCE_DIR}/sahana/etc/nginx/apps-available/sahana /etc/nginx/apps-available/sahana
ln -s /etc/nginx/apps-available/sahana /etc/nginx/apps-enabled/sahana

# Restart services
systemctl restart uwsgi
systemctl restart nginx

# Add portal application definition
${SOURCE_DIR}/basic/portal-app-manager.py sahana-eden "/eden/" "${SAHANA_ADMIN_USER}" "${SAHANA_ADMIN_PWD}"

# TODO: Does matplotlib still require MPLCONFIGDIR directory?
# If so, /srv/sahana/wsgihandler.py needs to be modified

# TODO: Potentially needed dependencies
# WARNING:  Setup unresolved dependency: boto required for Setup Module
# WARNING:  S3Doc unresolved dependency: sunburnt required for Full-Text Search support
# WARNING:  S3GIS unresolved dependency: selenium required for Map printing support
# WARNING:  Setup unresolved dependency: PyYAML required for Setup Module
# WARNING:  S3GIS unresolved dependency: GDAL required for Shapefile support
# WARNING:  Setup unresolved dependency: ansible required for Setup Module
# WARNING:  Survey unresolved dependency: PyRTF required if you want to export assessment/survey templates as a Word document
# WARNING: Unresolved optional dependency: pyserial required
# WARNING:  Message Parsing unresolved dependency: TwitterSearch required for fetching results from twitter keyword queries

# TODO: Development notes
# vi /srv/sahana/applications/eden/modules/templates/default/config.py
# vi /srv/sahana/applications/eden/modules/s3cfg.py
# sudo -u sahana /srv/sahana/web2py.py -i 192.168.2.202 -a sahana --nogui
# sudo -u sahana openssl req -new -x509 -nodes -out /srv/sahana/cert.pem -keyout /srv/sahana/cert.key -subj "/C=CZ/CN=$(hostname -f)"
# sudo -u sahana /srv/sahana/web2py.py -i 192.168.2.202 -a sahana -c /srv/sahana/cert.pem -k /srv/sahana/cert.key --nogui