#!/bin/bash

#=================================================
# GENERIC START
#=================================================
# IMPORT GENERIC HELPERS
#=================================================

source _common.sh
source /usr/share/yunohost/helpers

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

ynh_clean_setup () {
	ynh_clean_check_starting
}
# 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
is_public=$YNH_APP_ARG_IS_PUBLIC
admin=$YNH_APP_ARG_ADMIN
password=$YNH_APP_ARG_PASSWORD
used_forge=$YNH_APP_ARG_USED_FORGE
forge_username=$YNH_APP_ARG_FORGE_USERNAME
forge_token=$YNH_APP_ARG_FORGE_TOKEN

app=$YNH_APP_INSTANCE_NAME

admin_mail=$(ynh_user_get_info --username="$admin" --key=mail)
key=$(ynh_string_random --length=50)

#=================================================
# CHECK IF THE APP CAN BE INSTALLED WITH THESE ARGS
#=================================================
ynh_script_progression --message="Validating installation parameters..." --weight=1

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

# Register (book) web path
ynh_webpath_register --app=$app --domain=$domain --path_url=$path_url

#=================================================
# STORE SETTINGS FROM MANIFEST
#=================================================
ynh_script_progression --message="Storing installation settings..." --weight=1

ynh_app_setting_set --app=$app --key=domain --value=$domain
ynh_app_setting_set --app=$app --key=path --value=$path_url
ynh_app_setting_set --app=$app --key=admin --value=$admin
ynh_app_setting_set --app=$app --key=used_forge --value=$used_forge
ynh_app_setting_set --app=$app --key=forge_username --value=$forge_username
ynh_app_setting_set --app=$app --key=forge_token --value=$forge_token

#=================================================
# STANDARD MODIFICATIONS
#=================================================
# INSTALL DEPENDENCIES
#=================================================
ynh_script_progression --message="Installing dependencies..." --weight=40

ynh_exec_warn_less ynh_install_app_dependencies $pkg_dependencies

#=================================================
# CREATE DEDICATED USER
#=================================================
ynh_script_progression --message="Configuring system user..." --weight=1

# Create a system user
ynh_system_user_create --username=$app --home_dir="$final_path" --use_shell

#=================================================
# CREATE A POSTGRESQL DATABASE
#=================================================
ynh_script_progression --message="Creating a PostgreSQL database..." --weight=2

db_name=$(ynh_sanitize_dbid --db_name=$app)
db_user=$db_name
ynh_app_setting_set --app=$app --key=db_name --value=$db_name
ynh_psql_test_if_first_run
ynh_psql_setup_db --db_user=$db_user --db_name=$db_name
ynh_psql_execute_as_root --sql="CREATE EXTENSION IF NOT EXISTS pg_trgm;" --database=$db_name
db_pwd=$(ynh_app_setting_get --app=$app --key=psqlpwd)

#=================================================
# DOWNLOAD, CHECK AND UNPACK SOURCE
#=================================================
ynh_script_progression --message="Setting up source files..."

ynh_app_setting_set --app=$app --key=final_path --value=$final_path
mkdir -p "$final_path"
mkdir -p "$final_path/avatar-cache"
mkdir -p "$final_path/data"

chmod 750 "$final_path"
chmod -R o-rwx "$final_path"
chown -R $app:www-data "$final_path"

#=================================================
# NGINX CONFIGURATION
#=================================================
ynh_script_progression --message="Configuring NGINX web server..." --weight=2

# Create a dedicated NGINX config
ynh_add_nginx_config

#=================================================
# SPECIFIC SETUP
#=================================================
# INSTALL XXHASH
#=================================================
ynh_script_progression --message="Installing xxHash..."

tempdir="$(mktemp -d)"
ynh_setup_source --dest_dir=$tempdir --source_id="libxxhash"
pushd $tempdir
	make
	make install
popd
ynh_secure_remove --file="$tempdir"

#=================================================
# CONFIGURE HUB
#=================================================
ynh_script_progression --message="Configure hub..." --weight=1

mkdir "$final_path/.config/"
ynh_add_config --template="../conf/hub_config" --destination="$final_path/.config/hub"

cat <<EOF > "$final_path/.bashrc"
eval "$(hub alias -s /bin/bash)"
EOF

#=================================================
# PIP INSTALLATION
#=================================================
ynh_script_progression --message="Install weblate using PIP..." --weight=80

virtualenv --python=python3 "${final_path}/venv"
chown -R $app: "$final_path"

#run source in a 'sub shell'
(
	set +o nounset
	source "${final_path}/venv/bin/activate"
	set -o nounset
	cd "${final_path}"

	sudo --user=$app $final_path/venv/bin/pip install --upgrade pip setuptools wheel pkgconfig  xxhash

	# Read the "Note" section in https://docs.weblate.org/en/weblate-4.11/admin/install/venv-debian.html#python-modules
	sudo --user=$app $final_path/venv/bin/pip install --force-reinstall --no-binary :all: cffi
	# Still needed with latest version of weblate?
	sudo --user=$app BORG_OPENSSL_PREFIX=/usr/lib/x86_64-linux-gnu/ $final_path/venv/bin/pip install Weblate=="$(ynh_app_upstream_version)"
	sudo --user=$app $final_path/venv/bin/pip install psycopg2-binary ruamel.yaml aeidon phply
	#pip install pytz python-bidi PyYaML Babel pyuca pylibravatar py3dns psycopg2-binary phply django-redis hiredis aeidon ruamel.yaml
	# specific to YunoHost package:
	sudo --user=$app $final_path/venv/bin/pip install django_sendmail_backend
)

#=================================================
# ADD A CONFIGURATION
#=================================================
ynh_script_progression --message="Adding a configuration file..." --weight=1

redis_db=$(ynh_redis_get_free_db)
ynh_app_setting_set --app=$app --key=redis_db --value="$redis_db"
path_url="${path_url%/}"
settings="$final_path/venv/lib/$weblate_pypath/site-packages/weblate/settings.py"

set_forge_variables

ynh_add_config --template="../conf/settings.py" --destination="$settings"
ynh_add_config --template="../conf/celery-weblate" --destination="$final_path/celery-weblate"
ynh_add_config --template="../conf/uwsgi.ini" --destination="/etc/uwsgi/apps-available/$app.ini"

touch "$final_path/local_settings.py"
ln -sf "$final_path/local_settings.py" "$final_path/venv/lib/$weblate_pypath/site-packages/weblate/local_settings.py"

# Set permissions to app files
chmod 750 "$final_path"
chmod -R o-rwx "$final_path"
chown -R $app: "$final_path"
chown "$app:www-data" "$final_path"
chown -R "$app:www-data" "$final_path/data"

#=================================================
# SPECIFIC SETUP Filling up the database
# https://docs.weblate.org/en/latest/admin/install.html#filling-up-the-database
#==========================================
ynh_script_progression --message="Filling up the database..." --weight=10

(
	set +o nounset
	source "${final_path}/venv/bin/activate"
	set -o nounset
	export DJANGO_SETTINGS_MODULE="weblate.settings"
	cd "${final_path}"

	# the user needs to be weblate for postgresql
	ynh_exec_warn_less sudo --user=$app $final_path/venv/bin/weblate migrate --noinput
	# generate static files
	ynh_exec_warn_less sudo --user=$app $final_path/venv/bin/weblate collectstatic --noinput
	ynh_exec_warn_less sudo --user=$app $final_path/venv/bin/weblate createadmin --no-color \
		--password "$password" \
		--username "$admin" \
		--email "$admin_mail"

	# Check the configuration
	# This may fail in some cases with errors, etc., but the app works and the user can fix issues later.
	ynh_exec_warn_less sudo --user=$app $final_path/venv/bin/weblate check --deploy || true
)

#=================================================
# SETUP SYSTEMD
#=================================================
ynh_script_progression --message="Configuring a systemd service..." --weight=3

ynh_add_systemd_config --service=$app --template="weblate.service"
ynh_add_systemd_config --service="$app-celery" --template="celery-weblate.service"

#=================================================
# GENERIC FINALIZATION
#=================================================
# SETUP LOGROTATE
#=================================================
ynh_script_progression --message="Configuring log rotation..." --weight=1

# Use logrotate to manage application logfile(s)
ynh_use_logrotate --non-append

#=================================================
# INTEGRATE SERVICE IN YUNOHOST
#=================================================
ynh_script_progression --message="Integrating service in YunoHost..." --weight=3

yunohost service add $app --log="/var/log/$app/weblate.log"
yunohost service add "$app-celery" --log="/var/log/$app/weblate-celery-w1.log"

#=================================================
# START SYSTEMD SERVICE
#=================================================
ynh_script_progression --message="Starting a systemd service..." --weight=5

ynh_systemd_action --service_name=$app --action="start" --log_path="/var/log/$app/weblate.log" --line_match="spawned uWSGI"
ynh_systemd_action --service_name="$app-celery" --action="start" --log_path="/var/log/$app/weblate-celery-celery.log" --line_match="mingle: all alone"

#=================================================
# SETUP SSOWAT
#=================================================
ynh_script_progression --message="Configuring permissions..." --weight=1

# Make app public if necessary
if [ $is_public -eq 1 ]
then
	# Everyone can access the app.
	# The "main" permission is automatically created before the install script.
	ynh_permission_update --permission="main" --add="visitors"
fi

#=================================================
# RELOAD NGINX
#=================================================
ynh_script_progression --message="Reloading NGINX web server..." --weight=1

ynh_systemd_action --service_name="nginx" --action="reload"

#=================================================
# SEND A README FOR THE ADMIN
#=================================================

message="
Weblate settings file          : $settings
If you facing an issue or want to improve this app, please open a new issue in this project: https://github.com/YunoHost-Apps/weblate_ynh
"

ynh_send_readme_to_admin "$message" "$admin"

#=================================================
# END OF SCRIPT
#=================================================

ynh_script_progression --message="Installation of $app completed" --last