#!/bin/bash

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

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
#================================================

# Retrieve arguments
domain=$YNH_APP_ARG_DOMAIN
path_url=$YNH_APP_ARG_PATH

app=$YNH_APP_INSTANCE_NAME

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

architecture=$(ynh_detect_arch)
# Check machine architecture (in particular, we don't support ARM and 32bit machines)
if [ $architecture == "i386" ];
then
	ynh_die --message="Sorry, because of nodejs framework, this app can't be installed on i386 (32 bits) machine."
fi

final_path="/var/www/$app"
test ! -e "$final_path" || ynh_die "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..."

ynh_app_setting_set --app=$app --key=domain --value=$domain
ynh_app_setting_set --app=$app --key=path --value=$path_url

#=================================================
# DEFAULT SETTINGS
#=================================================
ynh_script_progression --message="Finding an available port..."

port=$(ynh_find_port --port=9876)
salt=$(ynh_string_random 40)

ynh_app_setting_set --app=$app --key=port --value=$port
ynh_app_setting_set --app=$app --key=salt --value=$salt

#=================================================
# STANDARD MODIFICATIONS
#=================================================
# INSTALL DEPENDENCIES
#=================================================
ynh_script_progression --message="Installing app dependencies"

ynh_exec_warn_less ynh_install_app_dependencies $pkg_dependencies

#=================================================
# 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
# Download, check integrity, uncompress and patch the source from app.src
ynh_setup_source --dest_dir="$final_path"

mkdir "$final_path/data"

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

# Create a dedicated nginx config
ynh_add_nginx_config

#=================================================
# CREATE DEDICATED USER
#=================================================
ynh_script_progression --message="Creating system user"

ynh_system_user_create --username=$app

#=================================================
# SPECIFIC SETUP
#=================================================
# Install nodejs
#=================================================
ynh_script_progression --message="Installing nodejs"

ynh_exec_warn_less ynh_install_nodejs --nodejs_version=$nodejs_version

#=================================================
# Install woob with pip
#=================================================
ynh_script_progression --message="Installing woob"

virtualenv --python=python3 --system-site-packages "${final_path}/venv"
(
	set +o nounset
	source "${final_path}/venv/bin/activate"
	set -o nounset

	pip install --upgrade pip
	pip install woob html2text simplejson BeautifulSoup4 PyExecJS pdfminer.six --ignore-installed
)

#=================================================
# Install Kresus with npm
#=================================================
ynh_script_progression --message="Installing app"

ynh_use_nodejs
(
	cd "$final_path"
	chown -R "$app": "$final_path"

	ynh_exec_warn_less ynh_npm install --production --unsafe-perm
)

#=================================================
# Setup Kresus postgresql database
#=================================================
ynh_script_progression --message="Creating a PostgreSQL database..."

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
db_pwd=$(ynh_app_setting_get --app=$app --key=psqlpwd)

#=================================================
# CONFIGURE KRESUS
#=================================================

cp ../conf/config.ini "$final_path/config.ini"

ynh_replace_string --match_string="__PORT__"        --replace_string="$port"       --target_file="$final_path/config.ini"
ynh_replace_string --match_string="__PATH__"        --replace_string="$path_url"   --target_file="$final_path/config.ini"
ynh_replace_string --match_string="__FINALPATH__"   --replace_string="$final_path" --target_file="$final_path/config.ini"
ynh_replace_string --match_string="__SALT__"        --replace_string="$salt"       --target_file="$final_path/config.ini"
ynh_replace_string --match_string="__APP__"         --replace_string="$app"        --target_file="$final_path/config.ini"
ynh_replace_string --match_string="__DOMAIN__"      --replace_string="$domain"     --target_file="$final_path/config.ini"
ynh_replace_string --match_string="__DB_NAME__"     --replace_string="$db_name"    --target_file="$final_path/config.ini"
ynh_replace_string --match_string="__DB_USER__"     --replace_string="$db_user"    --target_file="$final_path/config.ini"
ynh_replace_string --match_string="__DB_PASSWORD__" --replace_string="$db_pwd"     --target_file="$final_path/config.ini"

# Calculate and store the config file checksum into the app settings
ynh_store_file_checksum "$final_path/config.ini"

#=================================================
# SETUP SYSTEMD
#=================================================
ynh_script_progression --message="Creating systemd configuration"

ynh_replace_string --match_string="__ENV_PATH__" --replace_string="$PATH"                     --target_file="../conf/systemd.service"
ynh_replace_string --match_string="__NODEPATH__" --replace_string="$(dirname "$nodejs_path")" --target_file="../conf/systemd.service"

# Create a dedicated systemd config
ynh_add_systemd_config

#=================================================
# SECURE FILES AND DIRECTORIES
#=================================================

# Reset permissions
chown -R root:root "$final_path"

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

# Set permissions to config file
chown $app "$final_path/config.ini"
chmod 600 "$final_path/config.ini"

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

# Start a systemd service
ynh_systemd_action --service_name=$app --action="start"

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

ynh_systemd_action --service_name=nginx --action=reload

#=================================================
# SEND README TO ADMIN
#=================================================

message="
Domain: $domain
Path  : $path_url
Config: $final_path/config.ini

Please remember the default behavior of YunoHost when installing a new app is: everyone has access to the app.
This may be an issue for Kresus as it is a personal tool. Please remember to edit access rights in the YunoHost web administration panel or using command line interface.

Note about config.ini: this package will regenerate the config file on upgrade.
If you changed it manually and upgrade Kresus, you'll find a backup in $final_path.

Are you facing an issue, want to improve this app or say thank you?
Please open a new issue in this project: https://github.com/YunoHost-Apps/kresus_ynh
"
ynh_send_readme_to_admin "$message"

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

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