#!/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)
db_name=$(ynh_app_setting_get --app=$app --key=db_name)
db_pwd=$(ynh_app_setting_get --app=$app --key=mysqlpwd)
admin_mail=$(ynh_app_setting_get --app=$app --key=email)
admin=$(ynh_app_setting_get --app=$app --key=admin)
phpversion=$(ynh_app_setting_get --app=$app --key=phpversion)

#=================================================
# CHECK VERSION
#=================================================

upgrade_type=$(ynh_check_app_version_changed)

#=================================================
# ENSURE DOWNWARD COMPATIBILITY
#=================================================
ynh_script_progression --message="Ensuring downward compatibility..."

# If db_name doesn't exist, create it
if [ -z "$db_name" ]; then
	db_name=$(ynh_sanitize_dbid --db_name=$app)
	ynh_app_setting_set --app=$app --key=db_name --value=$db_name
fi

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

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

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

# Remove files for upgrade compatibilty from previous versions of Friendica
if [ -f $final_path/.htconfig.php ]; then
	ynh_secure_remove "$final_path/.htconfig.php"
fi

if [ -f $final_path/.htconfig.php ]; then
	ynh_secure_remove "$final_path/config/local.ini.php"
fi

# If admin_mail setting doesn't exist, create it
if [ -z $admin_mail ]; then
	admin_mail=$(ynh_user_get_info --username=$admin --key=mail)
	ynh_app_setting_set --app=$app --key=email --value=$admin_mail
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

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

if [ "$upgrade_type" == "UPGRADE_APP" ]
then

# Check if the repo can be updated with git
  if [ `cd $final_path && git rev-parse --is-inside-work-tree` ]; 
  then
    # Update through git
	pushd "$final_path"
      git fetch
      git checkout stable
      git pull
	popd
	pushd "$final_path/addon"
      git fetch
      git checkout stable
      git pull
	popd
# If git is not present upgrade through manual method 
else

    # Create a temporary directory and backup smarty3 folder
    tmpdir="$(ynh_smart_mktemp 6000)"
    ynh_script_progression --message="Upgrading source files..."
    mkdir -p "$tmpdir/view/"
    cp -a "$final_path/view/smarty3" "$tmpdir/view/smarty3"

    # Remove the app directory securely
    ynh_secure_remove "$final_path"

    # 1 - Clone stable repo 
    git clone https://github.com/friendica/friendica.git -b stable "$final_path"
    # Reset branch to the level of update we needed
    git reset --hard $update_commit
    
    # Remove the addon directory securely
    ynh_secure_remove "$final_path/addon"

    # 2 - Clone addons repo 
    git clone https://github.com/friendica/friendica-addons.git -b stable "$final_path/addon" 
    # Reset addons branch to the level of update we needed
    git reset --hard $addons_update_commit
    
    # Restore the smarty3 folder
    cp -a "$tmpdir/view/smarty3" "$final_path/view/smarty3"
    ynh_secure_remove "$tmpdir"

  fi
fi

# Copy config file for correct place
config="$final_path/config/local.config.php"
cp -a "/var/www/$app/config/local-sample.config.php" $config

# Replace strings in config file
ynh_replace_string --match_string="your.mysqlhost.com" --replace_string="localhost"   --target_file="$config"
ynh_replace_string --match_string="mysqlusername"      --replace_string="$db_name"    --target_file="$config"
ynh_replace_string --match_string="mysqldatabasename"  --replace_string="$db_name"    --target_file="$config"
ynh_replace_string --match_string="mysqlpassword"      --replace_string="$db_pwd"     --target_file= "$config"
ynh_replace_string --match_string="'admin_email' => ''," --replace_string="'admin_email' => '$admin_mail'," --target_file="$config"
#ynh_replace_string --match_string="OPEN"  --replace_string="CLOSED" --target_file="$config"

# ldap addon config
cp -f  "../conf/addon.config.php" "$final_path/config/."

# 3 - some extra folders
chmod -R 775 $final_path/view/smarty3

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

# Create a dedicated nginx config
ynh_add_nginx_config

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

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

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

# Create a dedicated php-fpm config
ynh_add_fpm_config --package="$extra_php_dependencies"

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

### Verify the checksum of a file, stored by `ynh_store_file_checksum` in the install script.
### And create a backup of this file if the checksum is different. So the file will be backed up if the admin had modified it.
ynh_backup_if_checksum_is_different --file="$final_path/config/local.config.php"
# Recalculate and store the checksum of the file for the next upgrade.
ynh_store_file_checksum --file="$final_path/config/local.config.php"

# Set up cron job
ynh_replace_string --match_string="__YNH_WWW_PATH__" --replace_string="$final_path" --target_file="../conf/poller-cron"
ynh_replace_string --match_string="__USER__" --replace_string="$app" --target_file="../conf/poller-cron"
ynh_replace_string --match_string="__PHP_VERSION__" --replace_string="$phpversion"  --target_file="../conf/poller-cron"
cp "../conf/poller-cron" "/etc/cron.d/$app"

# Run composer
pushd "$final_path"
 	php$phpversion bin/console dbstructure update  2> /dev/null
	bin/console config system addon ldapauth
popd

#=================================================
# Folder rights
#=================================================

chown -R $app: $final_path

#=================================================
# RELOAD NGINX
#=================================================
ynh_script_progression --message="Reloading NGINX web server..."

ynh_systemd_action --service_name=nginx --action=reload

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

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