#!/bin/bash

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

source _common.sh
source ynh_add_extra_apt_repos__3
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=$YNH_APP_ARG_DOMAIN
path_url="/"
admin=$YNH_APP_ARG_ADMIN
is_public=$YNH_APP_ARG_IS_PUBLIC
password=$YNH_APP_ARG_PASSWORD
name=$YNH_APP_ARG_NAME
registration=$YNH_APP_ARG_REGISTRATION
cache=$YNH_APP_ARG_CACHE
size=$YNH_APP_ARG_SIZE
random_key=$(ynh_string_random --length=64)
admin_email=$(ynh_user_get_info --username=$admin --key="mail")

## Bypass package_checker name not compatible with pleroma
if [ ${PACKAGE_CHECK_EXEC:-0} -eq 1 ]; then
	admin="test"
fi

app=$YNH_APP_INSTANCE_NAME

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

final_path=/var/www/$app
test ! -e "$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_print_info --message="Storing installation settings..."

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=$app --key=admin --value=$admin
ynh_app_setting_set --app=$app --key=is_public --value=$is_public
ynh_app_setting_set --app=$app --key=name --value="$name"
ynh_app_setting_set --app=$app --key=registration --value="$registration"
ynh_app_setting_set --app=$app --key=cache --value="$cache"
ynh_app_setting_set --app=$app --key=size --value="$size"
ynh_app_setting_set --app=$app --key=admin_email --value="$admin_email"
ynh_app_setting_set --app=$app --key=random_key --value="$random_key"

#=================================================
# STANDARD MODIFICATIONS
#=================================================
# FIND AND OPEN A PORT
#=================================================
ynh_print_info --message="Configuring firewall..."

# Find a free port
port=$(ynh_find_port --port=8095)
ynh_app_setting_set --app=$app --key=port --value=$port

#=================================================
# INSTALL DEPENDENCIES
#=================================================
ynh_print_info --message="Installing dependencies..."

ynh_install_app_dependencies $pkg_dependencies

lsb_name="$(lsb_release --codename --short)"
ynh_install_extra_app_dependencies --repo="deb http://packages.erlang-solutions.com/debian $lsb_name contrib" --package="$extra_pkg_dependencies" --key='https://packages.erlang-solutions.com/debian/erlang_solutions.asc'

#=================================================
# CREATE A POSTGRESQL DATABASE
#=================================================
ynh_print_info --message="Creating a PostgreSQL database..."

db_name=$(ynh_sanitize_dbid --db_name=$app)
db_user=$db_name
db_pwd=$(ynh_string_random --length=30)
ynh_app_setting_set --app=$app --key=db_name --value=$db_name
ynh_app_setting_set --app=$app --key=db_pwd --value=$db_pwd
ynh_psql_test_if_first_run
ynh_psql_setup_db --db_user=$db_user --db_name=$db_name --db_pwd=$db_pwd
ynh_psql_execute_as_root --sql="CREATE EXTENSION IF NOT EXISTS unaccent;" --database=$db_name
ynh_psql_execute_as_root --sql="CREATE EXTENSION IF NOT EXISTS pg_trgm;" --database=$db_name
ynh_psql_execute_as_root --sql="CREATE EXTENSION IF NOT EXISTS citext;" --database=$db_name
ynh_psql_execute_as_root --sql="CREATE EXTENSION IF NOT EXISTS \"uuid-ossp\";" --database=$db_name

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

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 --dest_dir="$final_path/$app"

#=================================================
# NGINX CONFIGURATION
#=================================================
ynh_print_info --message="Configuring nginx web server..."

# Create a dedicated nginx config
ynh_add_nginx_config
if [ $cache -eq 1 ]
then
	cp -rf "../conf/cache.conf" "/etc/nginx/conf.d/$app-cache.conf"
	ynh_replace_string --match_string="{APP}" --replace_string="$app" --target_file="/etc/nginx/conf.d/$app-cache.conf"
	ynh_replace_string --match_string="__SIZE__" --replace_string="$size" --target_file="/etc/nginx/conf.d/$app-cache.conf"
	ynh_store_file_checksum --file="/etc/nginx/conf.d/$app-cache.conf"
	ynh_replace_string --match_string="{APP}" --replace_string="$app" --target_file="../conf/media.conf"
	ynh_replace_string --match_string="__PORT__" --replace_string="$port" --target_file="../conf/media.conf"
	sudo su -c "cat ../conf/media.conf >> /etc/nginx/conf.d/$domain.d/$app.conf"
	ynh_store_file_checksum --file="/etc/nginx/conf.d/$domain.d/$app.conf"
fi

#=================================================
# CREATE DEDICATED USER
#=================================================
ynh_print_info --message="Configuring system user ..."

# Create a system user
ynh_system_user_create --username=$app --home_dir="$final_path"

#=================================================
# SPECIFIC SETUP
#=================================================
# MODIFY A CONFIG FILE
#=================================================

cp -f ../conf/generated_config.exs "$final_path/$app/config/prod.secret.exs"

ynh_replace_string --match_string="__DOMAIN__" --replace_string="$domain" --target_file="$final_path/$app/config/prod.secret.exs"
ynh_replace_string --match_string="__KEY__" --replace_string="$random_key" --target_file="$final_path/$app/config/prod.secret.exs"
ynh_replace_string --match_string="__INSTANCE_NAME__" --replace_string="$name" --target_file="$final_path/$app/config/prod.secret.exs"
ynh_replace_string --match_string="__DB_NAME__" --replace_string="$db_name" --target_file="$final_path/$app/config/prod.secret.exs"
ynh_replace_string --match_string="__DB_PWD__" --replace_string="$db_pwd" --target_file="$final_path/$app/config/prod.secret.exs"
ynh_replace_string --match_string="__ADMIN_EMAIL__" --replace_string="$admin_email" --target_file="$final_path/$app/config/prod.secret.exs"
ynh_replace_string --match_string="__PORT__" --replace_string="$port" --target_file="$final_path/$app/config/prod.secret.exs"

if [ $cache -eq 1 ]
then
	ynh_replace_string --match_string="__MEDIA_CACHE__" --replace_string="true" --target_file="$final_path/$app/config/prod.secret.exs"
else
	ynh_replace_string --match_string="__MEDIA_CACHE__" --replace_string="false" --target_file="$final_path/$app/config/prod.secret.exs"
fi

#  Set registrations open/closed
if [ $registration -eq 1 ]
then
 ynh_replace_string --match_string="__REG__" --replace_string="true" --target_file="$final_path/$app/config/prod.secret.exs"
else
 ynh_replace_string --match_string="__REG__" --replace_string="false" --target_file="$final_path/$app/config/prod.secret.exs"
fi

#=================================================
# MAKE SETUP
#=================================================

# Give permission to the final_path
chown -R "$app":"$app" "$final_path"

pushd $final_path/$app
    # App setup and db migration
    sudo -u "$app" MIX_ENV=prod mix local.hex --force
    sudo -u "$app" MIX_ENV=prod mix local.rebar --force
    sudo -u "$app" MIX_ENV=prod mix deps.get
    sudo -u "$app" MIX_ENV=prod mix ecto.migrate

    # Add user
    sudo -u "$app" MIX_ENV=prod mix pleroma.user new "$admin" "$admin_email" --password "$password" --moderator --admin -y

	#Generate key pair
    sudo -u "$app" MIX_ENV=prod mix web_push.gen.keypair >> "config/prod.secret.exs"
	ynh_replace_string --match_string="administrator@example.com" --replace_string="$admin_email" --target_file="$final_path/$app/config/prod.secret.exs"

	#Create uploads dir
	mkdir uploads
popd

#=================================================
# SETUP SYSTEMD
#=================================================
ynh_print_info --message="Configuring a systemd service..."

# Create a dedicated systemd config
ynh_add_systemd_config

#=================================================
# STORE THE CONFIG FILE CHECKSUM
#=================================================

# Calculate and store the config file checksum into the app settings
ynh_store_file_checksum --file="$final_path/$app/config/prod.secret.exs"

#=================================================
# GENERIC FINALIZATION
#=================================================
# SECURE FILES AND DIRECTORIES
#=================================================

# Set permissions to app files
chown -R "$app":"$app" "$final_path"

#=================================================
# SETUP LOGROTATE
#=================================================
ynh_print_info --message="Configuring log rotation..."

# Use logrotate to manage application logfile(s)
ynh_use_logrotate

#=================================================
# ADVERTISE SERVICE IN ADMIN PANEL
#=================================================

#yunohost service add $app --log "/var/log/$app/APP.log"
# if using yunohost version 3.2 or more in the 'manifest.json', a description can be added
yunohost service add $app --description "$app daemon for Pleroma" --log "/var/log/$app/$app.log"

#=================================================
# START SYSTEMD SERVICE
#=================================================
ynh_print_info --message="Starting a systemd service..."

ynh_systemd_action --service_name=$app --action="start" --log_path=systemd --line_match="Running Pleroma.Web.Endpoint"

#=================================================
# SETUP SSOWAT
#=================================================
ynh_print_info --message="Configuring SSOwat..."

# Make app public if necessary
if [ $is_public -eq 1 ]
then
	# unprotected_uris allows SSO credentials to be passed anyway.
	ynh_app_setting_set --app=$app --key=unprotected_uris --value="/"
fi

#=================================================
# RELOAD NGINX
#=================================================
ynh_print_info --message="Reloading nginx web server..."

ynh_systemd_action --service_name=nginx --action=reload

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

ynh_print_info --message="Installation of $app completed"