#!/bin/bash

# IMPORT GENERIC HELPERS
source _common.sh
source /usr/share/yunohost/helpers

# https://codeberg.org/ChriChri/flohmarkt_ynh/issues/9
# check if couchdb is already installed
# if there's a couchdb configuration file for flohmarkt we'll assume that couchdb
# had been installed by flohmarkt and we thus can savely do whatever we want to it
# with the resulting damage hopefully only influencing flohmarkt instances
if [[ -e /opt/couchdb ]] || pgrep epmd > /dev/null || pgrep beam.smp || dpkg-query -W couchdb > /dev/null 2>&1 \
  && ! [[ -e /opt/couchdb/etc/local.d/05-flohmarkt.ini ]];
then
  ynh_die "CouchDB already installed on this host - will not proceed."
  exit 1
fi

# INITIALIZE AND STORE SETTINGS
# TODO: do we need to store the password un-encrypted somewhere on the system?
# → there's no way to get the admin password later if sometimes in the future deleting
#   the app will delete its specific database only (instead of the whole couchdb server as
#   of now in the earliest versions of the integration).
ynh_app_setting_set --key=password_couchdb_admin --value="$password_couchdb_admin"

# get port, admin_pw for already installed couchdb
# skip the installation steps below
ynh_script_progression "Installing CouchDB..."

# A CouchDB node has an Erlang magic cookie value set at startup.
# This value must match for all nodes in the cluster. If they do not match,
# attempts to connect the node to the cluster will be rejected.
couchdb_magic_cookie=$(ynh_string_random --length=23 --filter='A-Za-z0-9_')
ynh_app_setting_set --key=couchdb_magic_cookie --value="$couchdb_magic_cookie"

# update couchdb dpkg
flohmarkt_ynh_up_inst_couchdb

# stop couchdb
flohmarkt_ynh_stop_couchdb

# add couchdb configuration
ynh_script_progression "Adding $app's configuration..."
# customize couchdb config
ynh_config_add --template="05-flohmarkt.ini" --destination="/opt/couchdb/etc/local.d/05-flohmarkt.ini"
chown root:couchdb /opt/couchdb/etc/local.d/05-flohmarkt.ini
chmod 640 /opt/couchdb/etc/local.d/05-flohmarkt.ini

# restart couchdb to pick up changes
ynh_script_progression "Starting CouchDB..."
flohmarkt_ynh_start_couchdb

# get flohmarkt
# suspecting that this deletes all other sources for YNH_APP_ID
ynh_script_progression "Downloading flohmarkt..."
ynh_setup_source --dest_dir="$flohmarkt_app_dir"

# setup python environment for flohmarkt
ynh_script_progression "Creating python venv..."
ynh_safe_rm "$flohmarkt_venv_dir"
flohmarkt_ynh_create_venv
flohmarkt_ynh_venv_upgrade
flohmarkt_ynh_venv_requirements

# JwtSecret
# workaround for https://github.com/YunoHost/issues/issues/2379
jwtsecret=$(ynh_string_random -l 200 -f 'a-zA-Z0-9/+'; ynh_string_random -l 142 -f 'a-zA-Z0-9/+'; echo -n '==')
ynh_app_setting_set --key=jwtsecret --value="$jwtsecret"

password_couchdb_flohmarkt=$(ynh_string_random --length=31 --filter='A-Za-z0-9_.:,')
ynh_app_setting_set --key=password_couchdb_flohmarkt --value="$password_couchdb_flohmarkt"

# generate flohmarkt.conf
ynh_script_progression "Adding flohmarkt.conf configuration..."
ynh_config_add --template="flohmarkt.conf" --destination="$flohmarkt_app_dir/flohmarkt.conf"

# setup couchdb
ynh_script_progression "Setup couchdb database and user for flohmarkt..."
flohmarkt_ynh_initialize_couchdb

# SETUP LOGROTATE
ynh_script_progression "Configuring log rotation..."
# Use logrotate to manage application logfile(s)
ynh_config_add_logrotate $flohmarkt_logfile

# NGINX CONFIGURATION
ynh_script_progression "Configuring NGINX web server..."
# Create a dedicated NGINX config
ynh_config_add_nginx

# systemd.service
ynh_script_progression "Configuring $app's systemd service..."
# Create a dedicated systemd config
ynh_config_add_systemd --service=$flohmarkt_filename
# integrate into yunohost
ynh_script_progression "Integrating service in YunoHost..."
yunohost service add $flohmarkt_filename --description="A decentral federated small advertisement platform" --log="$flohmarkt_logfile"

#  logfile contains possibly the secret setup URL
ynh_script_progression "Setting permissions on logfile..."
mkdir -m755 -p "$flohmarkt_log_dir"
touch "$flohmarkt_logfile"
chown root:$app "$flohmarkt_logfile"
chmod 660 "$flohmarkt_logfile"

# set file permissions for install dir
ynh_script_progression "Setting permissions on install directory..."
flohmarkt_ynh_set_permission

# SETUP FAIL2BAN
ynh_script_progression "Configuring Fail2Ban..."
ynh_config_add_fail2ban --logpath="$flohmarkt_logfile" --failregex='INFO: +<HOST>:\d+ - "POST /token HTTP/\d+\.\d+" 403 Forbidden'

# symlink data_dir and install_dir to make it easier to find the
# files for a certain domain/path
ynh_script_progression "Creating symlinks..."
flohmarkt_ynh_create_symlinks

# start service
ynh_script_progression "Debug before starting flohmarkt..."
ls -l $flohmarkt_logfile /bin/bash /usr/bin/bash || true
ynh_script_progression "Starting flohmarkt..."
flohmarkt_ynh_start_service

# integrate urlwatch
ynh_script_progression "Configure urlwatch and its cron job..."
flohmarkt_ynh_urlwatch_cron

ynh_script_progression "Installation of $id completed"