#!/bin/bash

#=================================================
# GENERIC STARTING
#=================================================
# IMPORT GENERIC HELPERS
#=================================================

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

#=================================================
# LOAD SETTINGS
#=================================================
ynh_script_progression --message="Loading installation settings..." --weight=2

app=$YNH_APP_INSTANCE_NAME

domain=$(ynh_app_setting_get --app=$app --key=domain)
path_url=$(ynh_app_setting_get --app=$app --key=path)
admin_user=$(ynh_app_setting_get --app=$app --key=admin)
is_public=$(ynh_app_setting_get --app=$app --key=is_public)
final_path=$(ynh_app_setting_get --app=$app --key=final_path)
upload_password=$(ynh_app_setting_get --app=$app --key=upload_password)
phpversion=$(ynh_app_setting_get --app=$app --key=phpversion)
datadir=$(ynh_app_setting_get --app=$app --key=datadir)

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

upgrade_type=$(ynh_check_app_version_changed)

#=================================================
# BACKUP BEFORE UPGRADE THEN ACTIVE TRAP
#=================================================
ynh_script_progression --message="Backing up Jirafeau before upgrading (may take a while)..." --weight=3

# 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

#=================================================
# ENSURE DOWNWARD COMPATIBILITY
#=================================================
ynh_script_progression --message="Ensuring downward compatibility..." --weight=1

# 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

# If datadir doesn't exist, create it
if [ -z "$datadir" ]; then
    datadir=/home/yunohost.app/$app
    ynh_app_setting_set --app=$app --key=datadir --value=$datadir
fi

# Migrate files from 3.4.1 to 4.1.1
current_version="$(ynh_app_upstream_version --manifest="/etc/yunohost/apps/$app/manifest.json")"
update_version="$(ynh_app_upstream_version)"
# If the upgrade if from a version 3 or less to 4 or more. Migrate the files
if [ ${current_version:0:1} -le 3 ] && [ ${update_version:0:1} -ge 4 ]
then
    ynh_script_progression --message="Migrating files..." --weight=5

    # Migrate files and links to the new directory structure
    for type in files links
    do
            while read file
            do
                    # Ignore _count files
                    if echo "$file" | grep --quiet "_count$"; then
                            continue
                    fi

                    # Remove all directories before the file name
                    full_file="$file"
                    file=$(basename $file)

                    # Split the file name every 8 characters
                    split=0
                    full_path="$datadir/$type"
                    while [ $split -le ${#file} ]
                    do
                            part_dir="${file:$split:8}"
                            # Increment the point where with start reading of 8.
                            split=$((split+8))
                            full_path="$full_path/$part_dir"
                    done

                    # Create the new crazy directory structure
                    mkdir -p "$full_path"
                    # And move the file to this place
                    mv "$full_file" "$full_path/$file"
                    if [ "$type" = "files" ]; then
                            mv "${full_file}_count" "$full_path"
                    fi
            done <<< "$(find "$datadir/$type" -type f)" # List all files, without directories
    done

    # And clean the old directories
    for type in files links
    do
            while read file
            do
                    # Remove all directories before the last one
                    dirname="$(basename $file)"
                    # Delete the directory if it's only one character long
                    if [ ${#dirname} -eq 1 ]
                    then
                            ynh_secure_remove --file="$file"
                    fi
            done <<< "$(find "$datadir/$type" -maxdepth 1 -mindepth 1 -type d)" # List all first level directories
    done
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"

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

if [ "$upgrade_type" == "UPGRADE_APP" ]
then
	ynh_script_progression --message="Upgrading source files..." --weight=2

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

chmod 750 "$final_path"
chmod -R o-rwx "$final_path"
chown -R $app:www-data "$final_path"

#=================================================
# NGINX CONFIGURATION
#=================================================
ynh_script_progression --message="Upgrading NGINX web server configuration..." --weight=2

# Create a dedicated NGINX config
ynh_add_nginx_config

#=================================================
# PHP-FPM CONFIGURATION
#=================================================
ynh_script_progression --message="Upgrading PHP-FPM configuration..." --weight=2

# Create a dedicated PHP-FPM config
ynh_add_fpm_config

#=================================================
# SPECIFIC UPGRADE
#=================================================
# SET THE UPLOAD PASSWORD
#=================================================

jirafeauconfigfile="$final_path/lib/config.local.php"

ynh_backup_if_checksum_is_different --file="$final_path/lib/config.local.php"

cp "../conf/config.local.php" "$final_path/lib/config.local.php"

# Set and save upload password, allowing an empty one
if [ -z "$upload_password" ]
then
    ynh_replace_string --match_string="__UPLOAD_PASSWORD__" --replace_string="" --target_file="$jirafeauconfigfile"
	ynh_app_setting_set --app=$app --key=upload_password --value=""
else
    ynh_replace_special_string --match_string="__UPLOAD_PASSWORD__" --replace_string="'$upload_password'" --target_file="$jirafeauconfigfile"
	ynh_app_setting_set --app=$app --key=upload_password --value="$upload_password"
fi

#=================================================
# CONFIGURE JIRAFEAU
#=================================================
ynh_script_progression --message="Upgrading $app configuration..." --weight=2

ynh_replace_string --match_string="__DOMAIN__" --replace_string="$domain" --target_file="$jirafeauconfigfile"
if [ "$path_url" = "/" ]
then
	ynh_replace_string --match_string="__PATH__" --replace_string="" --target_file="$jirafeauconfigfile"
else
	ynh_replace_string --match_string="__PATH__" --replace_string="$path_url" --target_file="$jirafeauconfigfile"
fi
ynh_replace_string --match_string="__DATADIR__" --replace_string="$datadir" --target_file="$jirafeauconfigfile"
ynh_replace_string --match_string="__ADMIN_USER__" --replace_string="$admin_user" --target_file="$jirafeauconfigfile"

# Recalculate and store the checksum of the file for the next upgrade.
ynh_store_file_checksum --file="$jirafeauconfigfile"

# Remove the install.php
ynh_secure_remove --file=$final_path/install.php

#=================================================
# SET THE CRON FILE
#=================================================
ynh_script_progression --message="Configuring the cron file..." --weight=1

ynh_add_config --template="../conf/cron" --destination="/etc/cron.d/$app"
chown root: "/etc/cron.d/$app"
chmod 644 "/etc/cron.d/$app"

#=================================================
# SETUP SSOWAT
#=================================================
ynh_script_progression --message="Configuring permissions..." --weight=2

ynh_permission_update --permission="main" --add="visitors"

if [ $is_public -eq 0 ]
then
	domain_regex=$(echo "$domain" | sed 's@-@.@g')
	[ "$path_url" = "/" ] && path_url=""
	ynh_app_setting_set --app=$app --key=protected_regex --value="$domain_regex$path_url/$","$domain_regex$path_url/admin.php.*$"
fi

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

ynh_systemd_action --service_name=nginx --action=reload

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

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