#!/bin/bash

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

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

#=================================================
# LOAD SETTINGS
#=================================================
ynh_script_progression --message="Loading installation settings..."

app=$YNH_APP_INSTANCE_NAME

domain=$(ynh_app_setting_get --app=$app --key=domain)
path_url=$(ynh_app_setting_get --app=$app --key=path)
final_path=$(ynh_app_setting_get --app=$app --key=final_path)
phpversion=$(ynh_app_setting_get --app=$app --key=phpversion)
db_name=$(ynh_app_setting_get --app=$app --key=db_name)
db_user=$db_name
db_pwd=$(ynh_app_setting_get --app=$app --key=mysqlpwd)

#=================================================
# CHECK VERSION
#=================================================
ynh_script_progression --message="Checking version..."

upgrade_type=$(ynh_check_app_version_changed)

#=================================================
# BACKUP BEFORE UPGRADE THEN ACTIVE TRAP
#=================================================
ynh_script_progression --message="Backing up the app before upgrading (may take a while)..."

# 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

#=================================================
# ACTIVATE MAINTENANCE MODE
#=================================================

ynh_maintenance_mode_ON

#=================================================
# STANDARD UPGRADE STEPS
#=================================================
# ENSURE DOWNWARD COMPATIBILITY
#=================================================

if [ -z "$final_path" ]; then	# Si final_path n'est pas renseigné dans app setting
	final_path=/var/www/$app
	ynh_app_setting_set $app final_path $final_path
fi

if [ -z "$db_name" ]; then	# Si db_name n'est pas renseigné dans app setting
	db_name=$(ynh_sanitize_dbid $app)
	ynh_app_setting_set $app db_name $db_name
fi

# Cleaning legacy permissions
if ynh_legacy_permissions_exists; then
	ynh_legacy_permissions_delete_all

	ynh_app_setting_delete --app=$app --key=is_public
fi

#=================================================
# CREATE DEDICATED USER
#=================================================
ynh_script_progression --message="Making sure dedicated system user exists..." --weight=1

# Create a dedicated user (if not existing)
ynh_system_user_create --username=$app --home_dir="$final_path"

#=================================================
# DOWNLOAD, CHECK AND UNPACK SOURCE
#=================================================

if [ "$upgrade_type" == "UPGRADE_APP" ]
then
	ynh_script_progression --message="Upgrading source files..."

	# Download, check integrity, uncompress and patch the source from app.src
	ynh_setup_source --dest_dir="$final_path"
	# Delete the install directory.
	# Keep it for the manual upgrade process...
# 	ynh_secure_remove "$final_path/install"
fi

#=================================================
# NGINX CONFIGURATION
#=================================================
ynh_script_progression --message="Upgrading NGINX web server configuration..." --weight=1

# Create a dedicated NGINX config
ynh_add_nginx_config

#=================================================
# PHP-FPM CONFIGURATION
#=================================================
ynh_script_progression --message="Upgrading PHP-FPM configuration..." --weight=1

# Create a dedicated PHP-FPM config
ynh_add_fpm_config

#=================================================
# SPECIFIC UPGRADE
#=================================================
# UPDATE TP.CONFIG.PHP FILE
#=================================================

# The file tp.config.php is a dump of the admin part of the database.
tp_config_file="$final_path/includes/config/tp.config.php"

echo "<?php
global \$SETTINGS;
\$SETTINGS = array (" > $tp_config_file

while read settings
do
	echo -n "    '$(echo $settings | awk '{ print $1 }')'" >> $tp_config_file
	echo " => '$(echo $settings | cut -d' ' -f2-)'," >> $tp_config_file
done <<< "$(ynh_mysql_execute_as_root "SELECT intitule, valeur FROM teampass_misc" $app)"
echo ");" >> $tp_config_file

#=================================================
# CREATE A CRON FILE FOR AUTOMATIC BACKUP
#=================================================

echo "0 0 * * 0 $app cd $final_path/backups && php script.backup.php" > /etc/cron.d/$app

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

if [ "$upgrade_type" == "UPGRADE_APP" ]
then
	# Move settings.php from old teampass version
	if [ ! -e "$final_path/includes/config/settings.php" ]
	then
		mv "$final_path/includes/settings.php" "$final_path/includes/config/settings.php"
	fi

	# Create csrfp.config.php
	if [ ! -e "$final_path/includes/libraries/csrfp/libs/csrfp.config.php" ]
	then
		cp $final_path/includes/libraries/csrfp/libs/csrfp.config.sample.php $final_path/includes/libraries/csrfp/libs/csrfp.config.php	# Créer le fichier de config de csrfp
		ynh_replace_string "CSRFP_TOKEN\" => \"" "&$(head -n40 /dev/urandom | tr -c -d 'a-f0-9' | head -c50)" $final_path/includes/libraries/csrfp/libs/csrfp.config.php	# Renseigne un token, valide en hexadécimal
		ynh_replace_string "jsUrl\" => \"" "&includes/libraries/csrfp/js/csrfprotector.js" $final_path/includes/libraries/csrfp/libs/csrfp.config.php	# Renseigne l'adresse de csrfprotector.js
	fi

	# Run database upgrades
	# Upgrade to 2.1.23.4
	#ynh_mysql_execute_as_root "ALTER TABLE teampass_misc ADD id INT(12) NOT NULL AUTO_INCREMENT FIRST, ADD PRIMARY KEY (id);" $app >&2
	# Upgrade to 2.1.24.4
	#ynh_mysql_execute_as_root "ALTER TABLE teampass_items CHANGE pw_len pw_len INT(5) NOT NULL DEFAULT '0';" $app >&2
	# Upgrade to 2.1.25.2
	#ynh_mysql_execute_as_root "INSERT INTO teampass_misc (id, type, intitule, valeur) VALUES (NULL, 'admin', 'encryption_protocol', 'ctr');" $app >&2
	# Upgrade to 2.1.27.x
	#ynh_mysql_execute_as_root "ALTER TABLE teampass_misc CHANGE id increment_id INT(12) NOT NULL AUTO_INCREMENT;" $app >&2
fi

#=================================================
# UPDATE SETTINGS.PHP
#=================================================

path_sk_file="/etc/$app/"

ynh_add_config --template="../conf/settings.php" --destination="$final_path/includes/config/settings.php"

#=================================================
# SECURING FILES AND DIRECTORIES
#=================================================

# Les fichiers appartiennent à root
chown -R root: $final_path
# Sauf certains dossiers includes, install, files et upload
chown -R $app $final_path/{includes,install,files,upload}
# Restreint l'accès au dossier de backup
chmod 750 $final_path/backups

#=================================================
# GENERIC FINALISATION
#=================================================
# RELOAD NGINX
#=================================================
ynh_script_progression --message="Reloading NGINX web server..." --weight=1

ynh_systemd_action --service_name=nginx --action=reload

#=================================================
# DEACTIVE MAINTENANCE MODE
#=================================================

ynh_maintenance_mode_OFF

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

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