#!/bin/bash

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

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

#=================================================
# LOAD SETTINGS
#=================================================

app=$YNH_APP_INSTANCE_NAME

domain=$(ynh_app_setting_get $app domain)
path_url=$(ynh_app_setting_get $app path)
admin=$(ynh_app_setting_get $app admin)
is_public=$(ynh_app_setting_get $app is_public)
language=$(ynh_app_setting_get $app language)
final_path=$(ynh_app_setting_get $app final_path)

#=================================================
# ENSURE DOWNWARD COMPATIBILITY
#=================================================

# Fix is_public as a boolean value
if [ "$is_public" = "Yes" ]; then
	ynh_app_setting_set $app is_public 1
	is_public=1
elif [ "$is_public" = "No" ]; then
	ynh_app_setting_set $app is_public 0
	is_public=0
fi

# If final_path doesn't exist, create it
if [ -z $final_path ]; then
	final_path=/var/www/$app
	ynh_app_setting_set $app final_path $final_path
fi

# TODO Not sure if still needed ??
# admin default value, if not set
if [ -z "$admin" ]; then
	admin=$(sudo yunohost user list | grep 'username' -m1 | awk '{print $2}')
	sudo ynh_app_setting_set $app is_public -v "$is_public"
fi

# language default value, if not set
if [ -z "$language" ]; then
	language='en'
	ynh_app_setting_set $app language $language
fi

#=================================================
# BACKUP BEFORE UPGRADE THEN ACTIVE TRAP
#=================================================

# Backup the current version of the app
ynh_backup_before_upgrade
ynh_clean_setup () {
	# restore it if the upgrade fails
	ynh_restore_upgradebackup
}
# Exit if an error occurs during the execution of the script
ynh_abort_if_errors

#=================================================
# CHECK THE PATH
#=================================================

# Normalize the URL path syntax
path_url=$(ynh_normalize_url_path $path_url)

#=================================================
# STANDARD UPGRADE STEPS
#=================================================
# DOWNLOAD, CHECK AND UNPACK SOURCE
#=================================================

# Download, check integrity, uncompress and patch the source from app.src
ynh_setup_source "$final_path"

#=================================================
# NGINX CONFIGURATION
#=================================================

# Create a dedicated nginx config
ynh_add_nginx_config

#=================================================
# CREATE DEDICATED USER
#=================================================

# Create a system user
ynh_system_user_create $app

#=================================================
# PHP-FPM CONFIGURATION
#=================================================

# Create a dedicated php-fpm config
ynh_add_fpm_config

#=================================================
# SPECIFIC UPGRADE
#=================================================

# TODO Taken from old "upgrade" script. Should check if it is needed and what it does
if [ -d "${final_path}/data/media" ]; then
	chown -R $app:root $final_path/{data/attic,data/cache,data/index,data/locks,data/media*,data/meta,data/pages,data/tmp}
fi

# Set the "language" of Dokuwiki
# Might overwrite user choice if language has been change directly in Dokuwiki admin panel
# Should be enhance to avoid this. For now, it is easier to overwrite as there is no need to take care of existing configuration
ynh_replace_string "__YNH_LANGUAGE__" "$language" "../conf/local.php"

# Set the "admin" user of Dokuwiki
ynh_replace_string "__YNH_ADMIN_USER__" "$admin" "../conf/local.php"

# Copy Yunohost specific configuration
cp ../conf/local.php $final_path/conf

# Do not override ACL configuration file
if [ ! -f "$final_path/conf/acl.auth.php" ]; then
	cp ../conf/acl.auth.php $final_path/conf
fi

# Remove upgrade notification
# See https://www.dokuwiki.org/update_check
touch $final_path/doku.php

# Remove files not used anymore after upgrade
# See https://www.dokuwiki.org/install:unused_files
if [ -f "$final_path/data/deleted.files" ]; then
	# Move to the dokuwiki installation folder so the "official" commands can be used without adaptation
	cd $final_path

	# This command could not remove directory
	#grep -Ev '^($|#)' data/deleted.files | xargs -n 1 rm -vf
	# => "rm: cannot remove 'vendor/easybook/geshi': Is a directory"

	# That one works as expected
	grep -Ev '^($|#)' data/deleted.files | xargs -n 1 rm -fr

	# bash "hack" to move back to the location user was before the last cd made
	# See http://winterdrake.com/unixlinux-trick-cd-back-to-the-previous-directory/
	# Should be the script folder of the package
	cd -
fi

# Update all plugins
for name_plugin in $(sudo -s cat $final_path/lib/plugins/*/plugin.info.txt | grep url | awk -F':' '{print $3}');
do
		# Get a official plugin for dokuwiki, not update a no-official
		sudo wget -nv --quiet "https://github.com/splitbrain/dokuwiki-plugin-${name_plugin}/zipball/master" -O "${name_plugin}.zip" -o /dev/null || true
		if [ -s "${name_plugin}.zip" ]; then
			sudo unzip ${name_plugin}.zip
			sudo cp -a splitbrain-dokuwiki-plugin-${name_plugin}*/. "${final_path}/lib/plugins/${name_plugin}/"
		fi
done

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

# Verify the checksum and backup the file if it's different
ynh_backup_if_checksum_is_different "$final_path/conf/local.php"
# Recalculate and store the config file checksum into the app settings
ynh_store_file_checksum "$final_path/conf/local.php"

#=================================================
# SETUP LOGROTATE
#=================================================

# Use logrotate to manage app-specific logfile(s)
ynh_use_logrotate --non-append

#=================================================
# SETUP SYSTEMD
#=================================================

# Create a dedicated systemd config
#ynh_add_systemd_config

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

# Files owned by dokuwiki can just read
chown -R root: $final_path

# except for conf, data, some data subfolders, and lib/plugin, where dokuwiki must have write permissions
#TODO compare rights with install script !!!
# Install script :
#sudo chown -R $app:root $final_path/{conf,data,data/attic,data/cache,data/index,data/locks,data/media*,data/meta,data/pages,data/tmp,lib/plugins,lib/tpl}

chown -R $app:root $final_path/{conf,data,lib/plugins,lib/tpl}
chmod -R 700 $final_path/conf
chmod -R 700 $final_path/data
chmod -R 755 $final_path/lib/plugins
chmod 755 $final_path/lib/tpl/{dokuwiki,dokuwiki/images}


#=================================================
# SETUP SSOWAT
#=================================================

if [ $is_public -eq 0 ]
then	# Remove the public access
	ynh_app_setting_delete $app skipped_uris
fi
# 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 unprotected_uris "/"
fi

# TODO: Still needed ??
#if [ "$is_public" = "Yes" ];
#then
#	sudo sed -i "s@#--PRIVATE--@@g" /etc/nginx/conf.d/$domain.d/$app.conf
#fi

#=================================================
# RELOAD NGINX
#=================================================

systemctl reload nginx
# TODO
#sudo yunohost app ssowatconf