#!/bin/bash

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

source _common.sh
source ynh_install_ruby
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=$YNH_APP_ARG_IS_PUBLIC
app=$YNH_APP_INSTANCE_NAME
install_extensions=$YNH_APP_ARG_INSTALL_EXTENSIONS
if [ $install_extensions -eq 0 ]
then
    access_domain=$domain
else
    access_domain=$YNH_APP_ARG_ACCESS_DOMAIN
    if [ -z $access_domain ]
    then
        access_domain=$domain
    fi
fi

#=================================================
# CHECK IF THE APP CAN BE INSTALLED WITH THESE ARGS
#=================================================
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=$app --key=is_public --value=$is_public
ynh_app_setting_set --app=$app --key=install_extensions --value=$install_extensions
ynh_app_setting_set --app=$app --key=access_domain --value=$access_domain

#=================================================
# STANDARD MODIFICATIONS
#=================================================
# FIND AND OPEN A PORT
#=================================================
ynh_script_progression --message="Configuring firewall..."  --weight=1

# Find an available port
port=$(ynh_find_port --port=3000)
# Open the port
ynh_app_setting_set --app=$app --key=port --value=$port

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

ynh_install_app_dependencies $pkg_dependencies

#=================================================
# 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
mkdir -p $final_path
ynh_setup_source  --dest_dir="$final_path/live"

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

# Create a dedicated nginx config
ynh_add_nginx_config "\
    port \
    access_domain \
    "

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

#=================================================
# SPECIFIC SETUP
#=================================================
# INSTALLING RUBY
#=================================================
ynh_script_progression --message="Installing Ruby...( This may take a while... )"  --weight=100 #331

ynh_install_ruby --ruby_version=$RUBY_VERSION
/opt/rbenv/versions/$RUBY_VERSION/bin/gem update --system --no-document

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

config_file="$final_path/live/.env"
cp -f ../conf/env.sample $config_file
ynh_replace_string --match_string="EXPOSED_PORT=3000" --replace_string="EXPOSED_PORT=$port" --target_file="$config_file"
secret_key=$(ynh_string_random --length=48 | base64)
ynh_replace_string --match_string="SECRET_KEY_BASE=changeme123" --replace_string="SECRET_KEY_BASE=$secret_key" --target_file="$config_file"
pseudo_key=$(ynh_string_random --length=48 | base64)
ynh_replace_string --match_string="PSEUDO_KEY_PARAMS_KEY=changeme456" --replace_string="PSEUDO_KEY_PARAMS_KEY=$pseudo_key" --target_file="$config_file"
ynh_replace_string --match_string="RAILS_ENV=development" --replace_string="RAILS_ENV=production" --target_file="$config_file"
ynh_replace_string --match_string="DB_DATABASE=standard_notes_db" --replace_string="DB_DATABASE=$db_name" --target_file="$config_file"
ynh_replace_string --match_string="DB_USERNAME=std_notes_user" --replace_string="DB_USERNAME=$db_user" --target_file="$config_file"
ynh_replace_string --match_string="DB_PASSWORD=changeme123" --replace_string="DB_PASSWORD=$db_pwd" --target_file="$config_file"
ynh_replace_string --match_string="RAILS_RELATIVE_URL_ROOT=/" --replace_string="RAILS_RELATIVE_URL_ROOT=$path_url" --target_file="$config_file"

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

chown -R "$app": "$final_path"

pushd "$final_path/live"
    exec_as "$app" env PATH=$PATH /opt/rbenv/versions/$RUBY_VERSION/bin/bundle config set path 'vendor/bundle'
    exec_as "$app" env PATH=$PATH /opt/rbenv/versions/$RUBY_VERSION/bin/bundle config set with 'development'
    exec_as "$app" env PATH=$PATH /opt/rbenv/versions/$RUBY_VERSION/bin/bundle install
    exec_as "$app" env PATH=$PATH RAILS_ENV=production /opt/rbenv/versions/$RUBY_VERSION/bin/bundle exec rails db:create db:migrate --quiet
#    exec_as "$app" env PATH=$PATH RAILS_ENV=production /opt/rbenv/versions/$RUBY_VERSION/bin/bundle exec rails assets:precompile --quiet
popd

#=================================================
# INSTALLING Standard Notes - Extensions
#=================================================
if [ $install_extensions -eq 1 ]
then
    ynh_script_progression --message="Installing Standard Notes - Extensions..."  --weight=1

    ynh_replace_string --match_string="^RAILS_SERVE_STATIC_FILES=.*$" --replace_string="RAILS_SERVE_STATIC_FILES=true" --target_file="$config_file"

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

    find "$final_path/live/public/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

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

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

# Create a dedicated systemd config
ynh_add_systemd_config --others_var="\
    port \
    RUBY_VERSION \
"

#=================================================
# 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="$config_file"
ynh_store_file_checksum --file="/etc/nginx/conf.d/$domain.d/$app.conf"

#=================================================
# GENERIC FINALIZATION
#=================================================
#=================================================
# SECURE FILES AND DIRECTORIES
#=================================================
ynh_script_progression --message="Securing files and directories..." --weight=1

# Set permissions to app files
chown -R root: $final_path
chown $app: $final_path
mkdir -p "$final_path/live/log"
chown -R $app: "$final_path/live/log/"
mkdir -p "$final_path/live/tmp"
chown -R $app: "$final_path/live/tmp/"

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

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

# Use logrotate to manage application logfile(s)
ynh_use_logrotate --logfile="$final_path/live/log/production.log"
ynh_use_logrotate --logfile="/var/log/$app/$app.log"

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

yunohost service add $app --description "Standard Notes - Syncing Server" --log "/var/log/$app/$app.log"

#=================================================
# SETUP FAIL2BAN
#=================================================
ynh_script_progression --message="Configuring fail2ban..." --weight=1

# Create a dedicated fail2ban config
touch "/var/log/$app/$app.log"
ynh_add_fail2ban_config --use_template --others_var="\
    domain \
    path_url \
    "

#=================================================
# SETUP SSOWAT
#=================================================
ynh_script_progression --message="Configuring SSOwat..."  --weight=3
# Make app public if necessary or protect it
if [ $is_public -eq 1 ]
then
    # Create the visitors permission if needed
    ynh_permission_update --permission "main" --add "visitors"  --remove "all_users"
fi

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

# Start a systemd service
ynh_systemd_action --service_name=$app --action="start" --log_path="/var/log/$app/$app.log"
sleep 15

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

message_extensions="To install extensions open this page: https://$domain$path_url/extensions/\n\
If you want to change the url of the syncing server all extensions from here have to be reinstalled be the users."
message_no_extensions="You have no extensions installed.\n\
You can configure this app by using the config-panel"

admin_panel="https://$(grep portal_domain /etc/ssowat/conf.json | cut -d'"' -f4)/yunohost/admin/#/apps/$app"
action="You can find some specific actions for this app by using the experimental __URL_TAG1__action feature__URL_TAG2__$admin_panel/actions__URL_TAG3__"
config_panel="You can find some specific configurations for this app by using the experimental __URL_TAG1__config-panel feature__URL_TAG2__$admin_panel/config-panel__URL_TAG3__"

ynh_replace_string --match_string="__TYPE__" --replace_string="installed" --target_file="../conf/message"
ynh_replace_string --match_string="__DOMAIN__" --replace_string="$domain" --target_file="../conf/message"
ynh_replace_string --match_string="__PATH_URL__" --replace_string="$path_url" --target_file="../conf/message"

if [ $install_extensions -eq 1 ]
then
    ynh_replace_string --match_string="__EXTENSIONS__" --replace_string="$message_extensions" --target_file="../conf/message"
else
    ynh_replace_string --match_string="__EXTENSIONS__" --replace_string="$message_no_extensions" --target_file="../conf/message"
fi
ynh_replace_string --match_string="__ACTION__" --replace_string="$action" --target_file="../conf/message"
ynh_replace_string --match_string="__CONFIG_PANEL__" --replace_string="$config_panel" --target_file="../conf/message"

ynh_send_readme_to_admin --app_message="../conf/message" --type='install'

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

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