#!/bin/bash

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

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

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

ynh_clean_setup () {
	true
}
# 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
app=$YNH_APP_INSTANCE_NAME

redis_db=$(ynh_redis_get_free_db)
disable_user_registration=false
files_size=100

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

final_path=/opt/yunohost/$app
test ! -e "$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=3

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=$app --key=redis_db --value="$redis_db"
ynh_app_setting_set --app=$app --key=DISABLE_USER_REGISTRATION --value=$disable_user_registration
ynh_app_setting_set --app=$app --key=FILES_SIZE --value=$files_size

#=================================================
# STANDARD MODIFICATIONS
#=================================================
# FIND AND OPEN A PORT
#=================================================
ynh_script_progression --message="Finding an available port..." --weight=1

# Find an available port
port_api_gateway=$(ynh_find_port --port=3000)
port_auth=$(ynh_find_port --port=$((port_api_gateway+1)))
port_auth_worker=$(ynh_find_port --port=$((port_auth+1)))
port_files=$(ynh_find_port --port=$((port_auth_worker+1)))
port_syncing_server=$(ynh_find_port --port=$((port_files+1)))
port_syncing_server_worker=$(ynh_find_port --port=$((port_syncing_server+1)))

ynh_app_setting_set --app=$app --key=port_api_gateway --value=$port_api_gateway
ynh_app_setting_set --app=$app --key=port_auth --value=$port_auth
ynh_app_setting_set --app=$app --key=port_auth_worker --value=$port_auth_worker
ynh_app_setting_set --app=$app --key=port_files --value=$port_files
ynh_app_setting_set --app=$app --key=port_syncing_server --value=$port_syncing_server
ynh_app_setting_set --app=$app --key=port_syncing_server_worker --value=$port_syncing_server_worker

#=================================================
# INSTALL DEPENDENCIES
#=================================================
ynh_script_progression --message="Installing dependencies..." --weight=17

ynh_install_app_dependencies $pkg_dependencies
ynh_install_nodejs --nodejs_version=$nodejs_version
ynh_install_extra_app_dependencies --repo="deb https://dl.yarnpkg.com/debian/ stable main" --package="yarn" --key="https://dl.yarnpkg.com/debian/pubkey.gpg"

#=================================================
# 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"

#=================================================
# CREATE A MYSQL DATABASE
#=================================================
ynh_script_progression --message="Creating a MySQL 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=$db_name
ynh_mysql_setup_db --db_user=$db_user --db_name=$db_name

#=================================================
# DOWNLOAD, CHECK AND UNPACK SOURCE
#=================================================
ynh_script_progression --message="Setting up source files..." --weight=2

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 --source_id=app --dest_dir="$final_path/live"
cp "$YNH_APP_BASEDIR/sources/extra_files/cron.sh" "$final_path/cron.sh"

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

#=================================================
# NGINX CONFIGURATION
#=================================================
ynh_script_progression --message="Configuring NGINX web server..." --weight=3

# Create a dedicated NGINX config
ynh_add_nginx_config

#=================================================
# SPECIFIC SETUP
#=================================================
# ADD SWAP
#=================================================
ynh_script_progression --message="Adding swap..."

if [ ${PACKAGE_CHECK_EXEC:-0} -eq 0 ]; then
	ynh_add_swap --size=$swap_needed
fi

#=================================================
# CREATE DATA DIRECTORY
#=================================================
ynh_script_progression --message="Creating a data directory..." --weight=1

datadir=/home/yunohost.app/$app
ynh_app_setting_set --app=$app --key=datadir --value=$datadir

mkdir -p $datadir/uploads

chmod 750 "$datadir"
chmod -R o-rwx "$datadir"
chown -R $app:$app "$datadir"

#=================================================
# ADD A CONFIGURATION
#=================================================
ynh_script_progression --message="Adding a configuration file..." --weight=2

config_api_gateway="$final_path/live/api-gateway.env"
config_auth="$final_path/live/auth.env"
config_auth_worker="$final_path/live/auth-worker.env"
config_files="$final_path/live/files.env"
config_syncing_server="$final_path/live/syncing-server.env"
config_syncing_server_worker="$final_path/live/syncing-server-worker.env"

jwt_secret=$(ynh_string_random --length=48 | base64)
legacy_jwt_secret=$(ynh_string_random --length=48 | base64)
auth_jwt_secret=$(ynh_string_random --length=48 | base64)
pseudo_key_params_key=$(ynh_string_random --length=48 | base64)
encryption_server_key=$(hexdump -n 32 -e '4/4 "%08X"' /dev/random) # 32bytes hex key is required
valet_token_secret=$(ynh_string_random --length=48 | base64)

ynh_app_setting_set --app=$app --key=jwt_secret --value=$jwt_secret
ynh_app_setting_set --app=$app --key=legacy_jwt_secret --value=$legacy_jwt_secret
ynh_app_setting_set --app=$app --key=auth_jwt_secret --value=$auth_jwt_secret
ynh_app_setting_set --app=$app --key=pseudo_key_params_key --value=$pseudo_key_params_key
ynh_app_setting_set --app=$app --key=encryption_server_key --value=$encryption_server_key
ynh_app_setting_set --app=$app --key=valet_token_secret --value=$valet_token_secret

ynh_add_config --template="env_api-gateway.env.sample" --destination="$config_api_gateway"
ynh_add_config --template="env_auth.env.sample" --destination="$config_auth"
ynh_add_config --template="env_auth-worker.env.sample" --destination="$config_auth_worker"
ynh_add_config --template="env_files.env.sample" --destination="$config_files"
ynh_add_config --template="env_syncing-server.env.sample" --destination="$config_syncing_server"
ynh_add_config --template="env_syncing-server-worker.env.sample" --destination="$config_syncing_server_worker"

#=================================================
# INSTALLING Standard Notes - Syncing Server
#=================================================
ynh_script_progression --message="Installing Standard Notes - Syncing Server..." --weight=93

ynh_use_nodejs
pushd "$final_path/live"
	ynh_exec_warn_less ynh_exec_as $app env NODE_OPTIONS="--max-old-space-size=$node_max_old_space_size" $ynh_node_load_PATH yarn install --immutable
	ynh_exec_warn_less ynh_exec_as $app env NODE_OPTIONS="--max-old-space-size=$node_max_old_space_size" $ynh_node_load_PATH yarn build
popd

#=================================================
# SETUP SYSTEMD
#=================================================
ynh_script_progression --message="Configuring a systemd service..." --weight=4

# Create a dedicated systemd config
ynh_add_systemd_config --service="$app-api-gateway" --template="systemd_api-gateway.service"
ynh_add_systemd_config --service="$app-auth" --template="systemd_auth.service"
ynh_add_systemd_config --service="$app-auth-worker" --template="systemd_auth-worker.service"
ynh_add_systemd_config --service="$app-files" --template="systemd_files.service"
ynh_add_systemd_config --service="$app-syncing-server" --template="systemd_syncing-server.service"
ynh_add_systemd_config --service="$app-syncing-server-worker" --template="systemd_syncing-server-worker.service"

#=================================================
# SETUP A CRON
#=================================================
ynh_script_progression --message="Setup a cron..."

ynh_add_config --template="../conf/cron.env" --destination="$final_path/cron.env"
ynh_add_config --template="../conf/cron" --destination="/etc/cron.d/$app"

chown root: "/etc/cron.d/$app"
chmod 640 "/etc/cron.d/$app"

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

mkdir -p "/var/log/$app"
chown -R "$app": "/var/log/$app"

# Use logrotate to manage application logfile(s)
ynh_use_logrotate --logfile="/var/log/$app/api-gateway.log"
ynh_use_logrotate --logfile="/var/log/$app/auth.log"
ynh_use_logrotate --logfile="/var/log/$app/auth-worker.log"
ynh_use_logrotate --logfile="/var/log/$app/files.log"
ynh_use_logrotate --logfile="/var/log/$app/syncing-server.log"
ynh_use_logrotate --logfile="/var/log/$app/syncing-server-worker.log"

#=================================================
# INTEGRATE SERVICE IN YUNOHOST
#=================================================
ynh_script_progression --message="Integrating service in YunoHost..." --weight=1

yunohost service add "$app-api-gateway" --description="Standard Notes - API Gateway" --log="/var/log/$app/api-gateway.log"
yunohost service add "$app-auth" --description="Standard Notes - Auth" --log="/var/log/$app/auth.log"
yunohost service add "$app-auth-worker" --description="Standard Notes - Auth - Worker" --log="/var/log/$app/auth-worker.log"
yunohost service add "$app-files" --description="Standard Notes - Files" --log="/var/log/$app/files.log"
yunohost service add "$app-syncing-server" --description="Standard Notes - Syncing Server" --log="/var/log/$app/syncing-server.log"
yunohost service add "$app-syncing-server-worker" --description="Standard Notes - Syncing Server - Worker" --log="/var/log/$app/syncing-server-worker.log"

#=================================================
# START SYSTEMD SERVICE
#=================================================
ynh_script_progression --message="Starting a systemd service..." --weight=1

# Start a systemd service
ynh_systemd_action \
	--service_name="$app-api-gateway" \
	--action="start" \
	--log_path="/var/log/$app/api-gateway.log" \
	--line_match='^.*Server started on port.*$|^.*Starting worker.*$'
ynh_systemd_action \
	--service_name="$app-auth" \
	--action="start" \
	--log_path="/var/log/$app/auth.log" \
	--line_match='^.*Server started on port.*$|^.*Starting worker.*$'
ynh_systemd_action \
	--service_name="$app-auth-worker" \
	--action="start" \
	--log_path="/var/log/$app/auth-worker.log" \
	--line_match='^.*Server started on port.*$|^.*Starting worker.*$'
ynh_systemd_action \
	--service_name="$app-files" \
	--action="start" \
	--log_path="/var/log/$app/files.log" \
	--line_match='^.*Server started on port.*$|^.*Starting worker.*$'
ynh_systemd_action \
	--service_name="$app-syncing-server" \
	--action="start" \
	--log_path="/var/log/$app/syncing-server.log" \
	--line_match='^.*Server started on port.*$|^.*Starting worker.*$'
ynh_systemd_action \
	--service_name="$app-syncing-server-worker" \
	--action="start" \
	--log_path="/var/log/$app/syncing-server-worker.log" \
	--line_match='^.*Server started on port.*$|^.*Starting worker.*$'

#=================================================
# SETUP FAIL2BAN
#=================================================
ynh_script_progression --message="Configuring Fail2Ban..." --weight=1

# Create a dedicated Fail2Ban config
ynh_add_fail2ban_config --use_template

#=================================================
# SETUP SSOWAT
#=================================================
ynh_script_progression --message="Configuring permissions..." --weight=3

# Everyone can access the app.
# The "main" permission is automatically created before the install script.
ynh_permission_update --permission="main" --add="visitors" --show_tile="false"

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

ynh_systemd_action --service_name=nginx --action=reload

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

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