#!/bin/bash

#=================================================
# GENERIC START
#=================================================
# IMPORT GENERIC HELPERS
#=================================================
set -eu
source _common.sh
source /usr/share/yunohost/helpers

#=================================================
# MANAGE SCRIPT FAILURE
#=================================================

# Exit if an error occurs during the execution of the script
ynh_abort_if_errors

#=================================================
# RETRIEVE ARGUMENTS FROM THE MANIFEST
#=================================================

domain=$YNH_APP_ARG_DOMAIN
path_url=$YNH_APP_ARG_PATH
admin=$YNH_APP_ARG_ADMIN
is_public=$YNH_APP_ARG_IS_PUBLIC

# This is a multi-instance app, meaning it can be installed several times independently
# The id of the app as stated in the manifest is available as $YNH_APP_ID
# The instance number is available as $YNH_APP_INSTANCE_NUMBER (equals "1", "2", ...)
# The app instance name is available as $YNH_APP_INSTANCE_NAME
#    - the first time the app is installed, YNH_APP_INSTANCE_NAME = ynhexample
#    - the second time the app is installed, YNH_APP_INSTANCE_NAME = ynhexample__2
#    - ynhexample__{N} for the subsequent installations, with N=3,4, ...
# The app instance name is probably what you are interested the most, since this is
# guaranteed to be unique. This is a good unique identifier to define installation path,
# db names, ...
app=$YNH_APP_INSTANCE_NAME

#=================================================
# CHECK IF THE APP CAN BE INSTALLED WITH THESE ARGS
#=================================================

# Normalize the url path syntax
path_url=$(ynh_normalize_url_path "$path_url")

# Check web path availability
ynh_webpath_available "$domain" "$path_url"
# Register (book) web path
ynh_webpath_register "$app" "$domain" "$path_url"

final_path=/var/www/$app
test ! -e "$final_path" || ynh_die "This path already contains a folder"

mkdir -p "$final_path"

#=================================================
# STORE SETTINGS FROM MANIFEST
#=================================================

ynh_app_setting_set "$app" domain "$domain"
ynh_app_setting_set "$app" path "$path_url"
ynh_app_setting_set "$app" admin "$admin"
ynh_app_setting_set "$app" is_public "$is_public"
ynh_app_setting_set "$app" final_path "$final_path"

#=================================================
# STANDARD MODIFICATIONS
#=================================================

#=================================================
# INSTALL DEPENDENCIES
#=================================================

ynh_install_app_dependencies libxml2-dev libxslt-dev libfreetype6-dev \
	libjpeg-dev libz-dev libyaml-dev python-dev python-pip python-virtualenv \
	postgresql libpq-dev uwsgi uwsgi-plugin-python

#=================================================
# CREATE A PostgreSQL DATABASE
#=================================================

ynh_psql_test_if_first_run

db_name=$(ynh_sanitize_dbid "$app")
db_user_pwd=$(ynh_string_random)
# Initialize database and store postgres password for upgrade
ynh_psql_create_db "$db_name" "$app" "$db_user_pwd"
ynh_app_setting_set "$app" db_name "$db_name"
ynh_app_setting_set "$app" psqlpwd "$db_user_pwd"

systemctl reload postgresql

#=================================================
# NGINX CONFIGURATION
#=================================================

# Create a dedicated nginx config
ynh_add_nginx_config

#=================================================
# CREATE DEDICATED USER
#=================================================

# Create system user for email notifications
smtp_pwd=$(ynh_string_random)
ynh_system_user_create_smtp "$app" "$smtp_pwd"
ynh_app_setting_set "$app" smtppwd "$smtp_pwd"

#=================================================
# SPECIFIC SETUP
#=================================================
# SPECIFIC SETUP uwsgi
#=================================================

# Copy Files
cp ../conf/uwsgi.ini "$final_path/uwsgi.ini"
ynh_replace_string "__NAME__" "$app" "$final_path/uwsgi.ini"
ynh_replace_string "__FINALPATH__" "$final_path" "$final_path/uwsgi.ini"

cp ../conf/uwsgi_service "/etc/systemd/system/$app.service"
ynh_replace_string "__NAME__" "$app" "/etc/systemd/system/$app.service"
ynh_replace_string "__FINALPATH__" "$final_path" "/etc/systemd/system/$app.service"

# Start service
systemctl enable "$app.service"

# Add weblate as a service
yunohost service add "$app.service" --log "/var/log/$app/APP.log"

#=================================================
# PIP INSTALLATION
#=================================================
virtualenv "${final_path}/venv"
#run source in a 'sub shell'
(
	set +eu
	source "${final_path}/venv/bin/activate"
	"${final_path}/venv/bin/pip" install Weblate==2.16
	"${final_path}/venv/bin/pip" install pytz python-bidi PyYaML Babel pyuca pylibravatar pydns psycopg2
)

#=================================================
# SPECIFIC SETUP settings.py
# https://docs.weblate.org/en/latest/admin/install.html#installation
# TODO: use --extra-search-dir=/path/to/dists
#=================================================
db_pwd=$(ynh_app_setting_get "$app" psqlpwd)
admin_mail=$(ynh_user_get_info "$admin" mail)
key=$(ynh_string_random)

cp ../conf/settings.py "$final_path/venv/lib/python2.7/site-packages/weblate/settings.py"

ynh_replace_string "__NAME__"      "$app"        "$final_path/venv/lib/python2.7/site-packages/weblate/settings.py"
ynh_replace_string "__DB_PWD__"    "$db_pwd"     "$final_path/venv/lib/python2.7/site-packages/weblate/settings.py"
ynh_replace_string "__ADMIN__"     "$admin"      "$final_path/venv/lib/python2.7/site-packages/weblate/settings.py"
ynh_replace_string "__ADMINMAIL__" "$admin_mail" "$final_path/venv/lib/python2.7/site-packages/weblate/settings.py"
ynh_replace_string "__DOMAIN__"    "$domain"     "$final_path/venv/lib/python2.7/site-packages/weblate/settings.py"
ynh_replace_string "__KEY__"       "$key"        "$final_path/venv/lib/python2.7/site-packages/weblate/settings.py"
ynh_replace_string "__PATHURL__"   "$path_url"   "$final_path/venv/lib/python2.7/site-packages/weblate/settings.py"
ynh_replace_string "__FINALPATH__" "$final_path" "$final_path/venv/lib/python2.7/site-packages/weblate/settings.py"
ynh_replace_string "__SMTPPWD__"   "$smtp_pwd"   "$final_path/venv/lib/python2.7/site-packages/weblate/settings.py"

#=================================================
# SPECIFIC SETUP Filling up the database
# https://docs.weblate.org/en/latest/admin/install.html#filling-up-the-database
#==========================================
(
	set +eu
	source "${final_path}/venv/bin/activate"
	export DJANGO_SETTINGS_MODULE="weblate.settings"
	# the user needs to be weblate for postgresql
	weblate migrate --noinput
	# generate static files
	weblate collectstatic --noinput
	weblate changesite --set-name "$domain"
	weblate createadmin --no-color \
		--password "weblate" \
		--username "$admin" \
		--email "$admin_mail"
)

#=================================================
# SETUP CRON
#=================================================
cp ../conf/cron_weblate "/etc/cron.d/$app"
ynh_replace_string "__FINALPATH__" "$final_path/" "/etc/cron.d/$app"

#=================================================
# STORE THE CHECKSUM OF THE CONFIG FILE
#=================================================

# Calculate and store the config file checksum into the app settings
ynh_store_file_checksum "$final_path/venv/lib/python2.7/site-packages/weblate/settings.py"

#=================================================
# GENERIC FINALIZATION
#=================================================
# SECURE FILES AND DIRECTORIES
#=================================================

# Set permissions to app files
chown -R "$app": "$final_path"

#=================================================
# SETUP LOGROTATE
#=================================================

# Use logrotate to manage application logfile(s)
ynh_use_logrotate

#=================================================
# SETUP SSOWAT
#=================================================

if [ "$is_public" -eq 0 ]
then	# Remove the public access
	ynh_app_setting_delete "$app" skipped_uris
fi
# Make app public if necessary
if [ "$is_public" -eq 1 ]
then
	# unprotected_uris allows SSO credentials to be passed anyway.
	ynh_app_setting_set "$app" unprotected_uris "/"
fi

#=================================================
# RELOAD NGINX
#=================================================

systemctl start "$app.service"
systemctl reload nginx