#!/bin/bash

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

source _common.sh
source ynh_install_ruby__2
source ynh_add_swap
source /usr/share/yunohost/helpers

admin_mail=$(ynh_user_get_info $admin 'mail')

# Initialize config_panel settings :<
max_toot_chars="500"
max_pinned_toots="5"
max_bio_chars="500"
max_profile_fields="4"
max_display_name_chars="30"
max_poll_options="5"
max_poll_option_chars="100"
max_image_size="8388608"
max_video_size="41943040"
max_emoji_size="51200"
max_remote_emoji_size="204800"
ynh_app_setting_set --app=$app --key=language --value=$language
ynh_app_setting_set --app=$app --key=max_toot_chars --value=$max_toot_chars
ynh_app_setting_set --app=$app --key=max_pinned_toots --value=$max_pinned_toots
ynh_app_setting_set --app=$app --key=max_bio_chars --value=$max_bio_chars
ynh_app_setting_set --app=$app --key=max_profile_fields --value=$max_profile_fields
ynh_app_setting_set --app=$app --key=max_display_name_chars --value=$max_display_name_chars
ynh_app_setting_set --app=$app --key=max_poll_options --value=$max_poll_options
ynh_app_setting_set --app=$app --key=max_poll_option_chars --value=$max_poll_option_chars
ynh_app_setting_set --app=$app --key=max_image_size --value=$max_image_size
ynh_app_setting_set --app=$app --key=max_video_size --value=$max_video_size
ynh_app_setting_set --app=$app --key=max_emoji_size --value=$max_emoji_size
ynh_app_setting_set --app=$app --key=max_remote_emoji_size --value=$max_remote_emoji_size

# Set `service` settings to support `yunohost app shell` command
ynh_app_setting_set --app="$app" --key=service --value="$app-web.service"

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

port_stream=$(ynh_find_port --port=4000)
ynh_app_setting_set --app=$app --key=port_stream --value=$port_stream

#=================================================
# APP "BUILD" (DEPLOYING SOURCES, VENV, COMPILING ETC)
#=================================================
# DOWNLOAD, CHECK AND UNPACK SOURCE
#=================================================
ynh_script_progression --message="Setting up source files..." --weight=1

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

chown -R $app:www-data "$install_dir"

#=================================================
# INSTALL DEPENDENCIES
#=================================================
ynh_script_progression --message="Installing Ruby and NodeJS..." --weight=1

ynh_exec_warn_less ynh_install_ruby --ruby_version=$ruby_version
ynh_exec_warn_less ynh_install_nodejs --nodejs_version=$nodejs_version

#=================================================
# ADD SWAP IF NEEDED
#=================================================
ynh_script_progression --message="Adding swap if needed..." --weight=1

total_memory=$(ynh_get_ram --total)
swap_needed=0

if [ $total_memory -lt $memory_needed ]; then
	# Need a minimum of 2.5Go of memory
	swap_needed=$(($memory_needed - $total_memory))
fi

ynh_script_progression --message="Adding $swap_needed Mo to swap..."
ynh_add_swap --size=$swap_needed

#=================================================
# ADD A CONFIGURATION
#=================================================
ynh_script_progression --message="Adding a configuration file..." --weight=1

config="$install_dir/live/.env.production"

language="$(echo $language | head -c 2)"

redis_namespace=${app}_production
ynh_app_setting_set --app="$app" --key=redis_namespace --value="$redis_namespace"

secret_key_base=$(ynh_string_random --length=128)
ynh_app_setting_set --app="$app" --key=secret_key_base --value="$secret_key_base"

otp_secret=$(ynh_string_random --length=128)
ynh_app_setting_set --app="$app" --key=otp_secret --value="$otp_secret"

# We need rake to build vapid keys, we generate them later once the app is installed
vapid_private_key=""
vapid_public_key=""

ynh_add_config --template="../conf/.env.production.sample" --destination="$config"
chmod 400 "$config"
chown $app:$app "$config"

ynh_replace_string --match_string="registrations_mode: 'open'" --replace_string="registrations_mode: 'none'" --target_file="$install_dir/live/config/settings.yml"
ynh_replace_string --match_string="min_invite_role: 'admin'" --replace_string="min_invite_role: 'none'" --target_file="$install_dir/live/config/settings.yml"

ynh_store_file_checksum --file="$install_dir/live/config/settings.yml"

chmod 400 "$install_dir/live/config/settings.yml"
chown $app:$app "$install_dir/live/config/settings.yml"

#=================================================
# BUILD APP
#=================================================
ynh_script_progression --message="Building app..." --weight=1

pushd "$install_dir/live"
	# Building ruby packages
	ynh_use_ruby
	ynh_gem update --system
	ynh_gem install bundler --no-document
	ynh_exec_as $app $ynh_ruby_load_path $ld_preload bin/bundle config deployment 'true'
	ynh_exec_as $app $ynh_ruby_load_path $ld_preload bin/bundle config without 'development test'
	ynh_exec_as $app $ynh_ruby_load_path $ld_preload bin/bundle config set force_ruby_platform true
	ynh_exec_as $app $ynh_ruby_load_path $ld_preload bin/bundle install -j$(getconf _NPROCESSORS_ONLN)
	# Building assets
	ynh_use_nodejs
	corepack enable
	yarn install
	echo "SAFETY_ASSURED=1">> $config
	ynh_exec_warn_less ynh_exec_as $app RAILS_ENV=production $ynh_ruby_load_path $ld_preload bin/bundle exec rails db:migrate --quiet
	ynh_exec_warn_less ynh_exec_as $app RAILS_ENV=production $ynh_ruby_load_path $ld_preload bin/bundle exec rails assets:precompile --quiet
	# Generate vapid keys
	ynh_exec_warn_less ynh_exec_as $app RAILS_ENV=production $ynh_ruby_load_path $ld_preload bin/bundle exec rake mastodon:webpush:generate_vapid_key > key.txt
	# Create the first admin user
	ynh_exec_warn_less ynh_exec_as $app RAILS_ENV=production $ynh_ruby_load_path $ld_preload bin/tootctl accounts create "$admin" --email="$admin_mail" --confirmed --role=Owner > /dev/null
popd

# Re-generate config with vapid keys
vapid_private_key=$(grep -oP "VAPID_PRIVATE_KEY=\K.+" "$install_dir/live/key.txt")
ynh_app_setting_set --app="$app" --key=vapid_private_key --value="$vapid_private_key"
vapid_public_key=$(grep -oP "VAPID_PUBLIC_KEY=\K.+" "$install_dir/live/key.txt")
ynh_app_setting_set --app="$app" --key=vapid_public_key --value="$vapid_public_key"
ynh_secure_remove --file="$install_dir/live/key.txt"
ynh_delete_file_checksum --file="$config"
ynh_add_config --template="../conf/.env.production.sample" --destination="$config"
chmod 400 "$config"
chown $app:$app "$config"

#=================================================
# SYSTEM CONFIGURATION
#=================================================
ynh_script_progression --message="Adding system configurations related to $app..." --weight=1

# Create a dedicated NGINX config using the conf/nginx.conf template
ynh_add_nginx_config

# Create a dedicated systemd config
ynh_add_systemd_config --service="$app-web" --template="glitchsoc-web.service"
yunohost service add "$app-web" --description="$app web service"

ynh_add_systemd_config --service="$app-sidekiq" --template="glitchsoc-sidekiq.service"
yunohost service add "$app-sidekiq" --description="$app sidekiq service"

ynh_add_systemd_config --service="$app-streaming" --template="glitchsoc-streaming.service"
yunohost service add "$app-streaming" --description="$app streaming service"

# Create a cron file
ynh_add_config --template="../conf/cron" --destination="/etc/cron.d/$app"

#=================================================
# GENERIC FINALIZATION
#=================================================
# START SYSTEMD SERVICE
#=================================================
ynh_script_progression --message="Starting all systemd services..." --weight=1

ynh_systemd_action --service_name=${app}-web --action="start" --log_path=systemd --line_match="Listening on"
ynh_systemd_action --service_name=${app}-sidekiq --action="start" --log_path=systemd --line_match="Schedules Loaded"
ynh_systemd_action --service_name=${app}-streaming --action="start" --log_path=systemd --line_match="Streaming API now listening on"

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

ynh_script_progression --message="Installation of $app completed" --weight=1