#!/bin/bash

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

source _common.sh
source ynh_add_swap
source ynh_install_ruby__2
source ynh_redis
source ynh_send_readme_to_admin__2
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
app=$YNH_APP_INSTANCE_NAME

#=================================================
# CHECK IF THE APP CAN BE INSTALLED WITH THESE ARGS
#=================================================
final_path=/opt/yunohost/$app
final_path_www=/var/www/$app
final_path_extensions="$final_path_www/extensions"
ynh_app_setting_set --app=$app --key=final_path --value=$final_path
ynh_app_setting_set --app=$app --key=final_path_www --value=$final_path_www
ynh_app_setting_set --app=$app --key=final_path_extensions --value=$final_path_extensions
test ! -e "$final_path" || ynh_die --message="This path already contains a folder"
test ! -e "$final_path_www" || 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
redis_db=$(ynh_redis_get_free_db)
ynh_app_setting_set --app=$app --key=redis_db --value="$redis_db"

#=================================================
# STORE SETTINGS
#=================================================
ynh_app_setting_set --app=$app --key=syncing_server_js_version --value=$syncing_server_js_version
ynh_app_setting_set --app=$app --key=auth_version --value=$auth_version
ynh_app_setting_set --app=$app --key=api_gateway_version --value=$api_gateway_version
ynh_app_setting_set --app=$app --key=extensions_version --value=$extensions_version
ynh_app_setting_set --app=$app --key=standalone --value="true"

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

# Find an available port
port_syncing_server_js=$(ynh_find_port --port=3000)
port_syncing_server_js_worker=$(ynh_find_port --port=$((port_syncing_server_js+1)))
port_auth=$(ynh_find_port --port=$((port_syncing_server_js_worker+1)))
port_auth_worker=$(ynh_find_port --port=$((port_auth+1)))
port_api_gateway=$(ynh_find_port --port=$((port_auth_worker+1)))
ynh_app_setting_set --app=$app --key=port_syncing_server_js --value=$port_syncing_server_js
ynh_app_setting_set --app=$app --key=port_syncing_server_js_worker --value=$port_syncing_server_js_worker
ynh_app_setting_set --app=$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_api_gateway --value=$port_api_gateway

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

# Download, check integrity, uncompress and patch the source from app.src
mkdir -p "$final_path/live"
ynh_setup_source --source_id=app_syncing-server-js --dest_dir="$final_path/live/syncing-server-js"
ynh_setup_source --source_id=app_syncing-server-js --dest_dir="$final_path/live/syncing-server-js-worker"
ynh_setup_source --source_id=app_auth --dest_dir="$final_path/live/auth"
ynh_setup_source --source_id=app_auth --dest_dir="$final_path/live/auth-worker"
ynh_setup_source --source_id=app_api-gateway --dest_dir="$final_path/live/api-gateway"

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

# Copy help file
mkdir -p "$final_path_www/help"
if test -e "$YNH_APP_BASEDIR/sources/extra_files/help"; then
    cp --archive "$YNH_APP_BASEDIR/sources/extra_files/help/." "$final_path_www/help"
fi
ynh_replace_vars --file="$final_path_www/help/index.html"

# Extensions
mkdir -p "$final_path_extensions"

if test -e "$YNH_APP_BASEDIR/sources/extra_files/extensions"; then
    cp --archive "$YNH_APP_BASEDIR/sources/extra_files/extensions/." "$final_path_extensions"
fi

find "../conf/" -name "ext_*.src" -print0 | while read -d $'\0' file
do
    basename=$(basename -as .src $file)
    ynh_setup_source  --dest_dir="$final_path_extensions/src/${basename#'ext_'}" --source_id="$basename"
done

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

#=================================================
# 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..."

ynh_add_swap --size=$swap_needed

#=================================================
# MODIFY A CONFIG FILE
#=================================================
ynh_script_progression --message="Modifying a config file..."  --weight=2

config_syncing_server_js="$final_path/live/syncing-server-js.env"
config_syncing_server_js_worker="$final_path/live/syncing-server-js-worker.env"
config_auth="$final_path/live/auth.env"
config_auth_worker="$final_path/live/auth-worker.env"
config_api_gateway="$final_path/live/api-gateway.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

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_add_config --template="env_syncing-server-js.env.sample" --destination="$config_syncing_server_js"
ynh_add_config --template="env_syncing-server-js-worker.env.sample" --destination="$config_syncing_server_js_worker"
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_api-gateway.env.sample" --destination="$config_api_gateway"

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


ynh_use_nodejs
pushd "$final_path/live/syncing-server-js"
    ynh_print_info "Installing ... [1/3]"
    ynh_exec_as $app env NODE_OPTIONS="--max-old-space-size=4096" PATH=$ynh_node_load_PATH yarn install --pure-lockfile
    ynh_exec_as $app env NODE_OPTIONS="--max-old-space-size=4096" PATH=$ynh_node_load_PATH yarn build
popd
pushd "$final_path/live/auth"
    ynh_print_info "Installing ... [2/3]"
    ynh_exec_as $app env NODE_OPTIONS="--max-old-space-size=4096" PATH=$ynh_node_load_PATH yarn install --pure-lockfile
    ynh_exec_as $app env NODE_OPTIONS="--max-old-space-size=4096" PATH=$ynh_node_load_PATH yarn build
popd
pushd "$final_path/live/api-gateway"
    ynh_print_info "Installing ... [3/3]"
    ynh_exec_as $app env NODE_OPTIONS="--max-old-space-size=4096" PATH=$ynh_node_load_PATH yarn install --pure-lockfile
    ynh_exec_as $app env NODE_OPTIONS="--max-old-space-size=4096" PATH=$ynh_node_load_PATH yarn build
popd
#=================================================
# INSTALLING Standard Notes - Extensions
#=================================================
ynh_script_progression --message="Setup Standard Notes - Extensions..."  --weight=1


if [ $path_url = "/" ]
then
    path=""
else
    path=$path_url
fi

ynh_replace_string --match_string="__DOMAIN__PATH__" --replace_string="$domain$path" --target_file="$final_path_extensions/repo.json"

find "$final_path_extensions/src/" -name "*.json" -print0 | while read -d $'\0' file
do
    ynh_replace_string --match_string="__DOMAIN__PATH__" --replace_string="$domain$path" --target_file="$file"
done


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

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

#=================================================
# STORE THE CONFIG FILE CHECKSUM
#=================================================
ynh_script_progression --message="Storing the config file checksum..." --weight=1

# Calculate and store the config file checksum into the app settings
ynh_store_file_checksum --file="$config_syncing_server_js"
ynh_store_file_checksum --file="$config_syncing_server_js_worker"
ynh_store_file_checksum --file="$config_auth"
ynh_store_file_checksum --file="$config_auth_worker"
ynh_store_file_checksum --file="$config_api_gateway"
ynh_store_file_checksum --file="/etc/nginx/conf.d/$domain.d/$app.conf"

#=================================================
# 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/$app/syncing-server.log"
ynh_use_logrotate --logfile="/var/log/$app/syncing-server-worker.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/api-gateway.log"

#=================================================
# INTEGRATE SERVICE IN YUNOHOST
#=================================================
ynh_script_progression --message="Integrate $app service in Yunohost..."  --weight=1

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


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

# Start a systemd service
ynh_systemd_action \
    --service_name="$app-syncing-server-js" \
    --action="start" \
    --log_path="/var/log/$app/syncing-server-js.log" \
    --line_match='{"message":"Server started on port '$port_syncing_server_js'","level":"info"}'
ynh_systemd_action \
    --service_name="$app-syncing-server-js-worker" \
    --action="start" \
    --log_path="/var/log/$app/syncing-server-js-worker.log" \
    --line_match='{"message":"Starting worker...","level":"info"}'
ynh_systemd_action \
    --service_name="$app-auth" \
    --action="start" \
    --log_path="/var/log/$app/auth.log" \
    --line_match='{"message":"Server started on port '$port_auth'","level":"info"}'
ynh_systemd_action \
    --service_name="$app-auth-worker" \
    --action="start" \
    --log_path="/var/log/$app/auth-worker.log" \
    --line_match='{"message":"Starting worker...","level":"info"}'
ynh_systemd_action \
    --service_name="$app-api-gateway" \
    --action="start" \
    --log_path="/var/log/$app/api-gateway.log" \
    --line_match='{"message":"Server started on port '$port_api_gateway'","level":"info"}'

#=================================================
# 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 SSOwat..."  --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"
ynh_permission_create --permission="help" --url="/help/" --allowed="all_users" --show_tile="true" --label="Help"

#=================================================
# 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
#=================================================
ynh_script_progression --message="Sending a readme for the admin..."

admin_panel="https://$(grep portal_domain /etc/ssowat/conf.json | cut -d'"' -f4)/yunohost/admin/#/apps/$app"

echo -e "\
Standard Notes - Syncing Server was successfully installed.\n\
Please configure the Standard Notes web app or mobile app to use this syncing server: https://$domain$path_url\n\
\n\
Standard Notes extensions are hosted with this package.\n\
An Help page for setting-up the Standard Notes Server and Extensions have been created under: https://$domain$path_url/help\n\
The Help page is accessible via the Yunohost Portal.\n\
You can deactivate the Help page under: $admin_panel\
" > message

ynh_send_readme_to_admin --app_message="message" --type='install'

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

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