#!/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)
language=$(ynh_app_setting_get --app=$app --key=language)
admin=$(ynh_app_setting_get --app=$app --key=admin)
final_path=$(ynh_app_setting_get --app=$app --key=final_path)
port=$(ynh_app_setting_get --app=$app --key=port)
infcloud=$(ynh_app_setting_get --app=$app --key=infcloud)
version=$(ynh_app_setting_get --app=$app --key=version)
overwrite_config=$(ynh_app_setting_get --app=$app --key=overwrite_config)
overwrite_infcloud=$(ynh_app_setting_get --app=$app --key=overwrite_infcloud)
overwrite_nginx=$(ynh_app_setting_get --app=$app --key=overwrite_nginx)
overwrite_systemd=$(ynh_app_setting_get --app=$app --key=overwrite_systemd)
overwrite_phpfpm=$(ynh_app_setting_get --app=$app --key=overwrite_phpfpm)

# Optional parameters from config-panel feature
firstdayofweek=$(ynh_app_setting_get --app=$app --key=firstdayofweek)
activeview=$(ynh_app_setting_get --app=$app --key=activeview)
openformmode=$(ynh_app_setting_get --app=$app --key=openformmode)
startofbusiness=$(ynh_app_setting_get --app=$app --key=startofbusiness)
endofbusiness=$(ynh_app_setting_get --app=$app --key=endofbusiness)
defaulteventduration=$(ynh_app_setting_get --app=$app --key=defaulteventduration)

#=================================================
# 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 () {
    ynh_clean_check_starting
    # 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_script_progression --message="Activate maintenance mode"

ynh_maintenance_mode_ON

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

ynh_app_setting_delete --app=$app --key=unprotected_regex

if [ -d /usr/local/radicale ]
then
    mkdir -p /opt/yunohost
    mv /usr/local/radicale /opt/yunohost/
fi

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

# If overwrite_config doesn't exist, create it
if [ -z "$overwrite_config" ]; then
    overwrite_config=1
    ynh_app_setting_set --app=$app --key=overwrite_config --value=$overwrite_config
fi

# If overwrite_infcloud doesn't exist, create it
if [ -z "$overwrite_infcloud" ]; then
    overwrite_infcloud=1
    ynh_app_setting_set --app=$app --key=overwrite_infcloud --value=$overwrite_infcloud
fi

# If overwrite_nginx doesn't exist, create it
if [ -z "$overwrite_nginx" ]; then
    overwrite_nginx=1
    ynh_app_setting_set --app=$app --key=overwrite_nginx --value=$overwrite_nginx
fi

# If overwrite_systemd doesn't exist, create it
if [ -z "$overwrite_systemd" ]; then
    overwrite_systemd=1
    ynh_app_setting_set --app=$app --key=overwrite_systemd --value=$overwrite_systemd
fi

# If overwrite_phpfpm doesn't exist, create it
if [ -z "$overwrite_phpfpm" ]; then
    overwrite_phpfpm=1
    ynh_app_setting_set --app=$app --key=overwrite_phpfpm --value=$overwrite_phpfpm
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

# If path_url still contains infcloud, then radicale_path doesn't exist
if [[ "$path_url" =~ "/infcloud" ]]; then
    path_url="${path_url%/*}"
    ynh_app_setting_set --app=$app --key=path --value=$path_url
fi

# Migrate to v2
if ynh_compare_current_package_version --comparison le --version 1.1.6~ynh6
then
    ynh_print_warn --message="Migration to radicale v2+..."
    # Force nginx upgrade
    overwrite_nginx=1
    # Force systemd upgrade
    overwrite_systemd=1
    # Force config upgrade
    overwrite_config=1
    # Migrate collections to v2 format
    # Init a new temporary virtualenv
    virtualenv -p python3 /opt/yunohost/radicale_v1_temp
    # Install a v1 version
    /opt/yunohost/radicale_v1_temp/bin/pip install radicale==1.1.* python-ldap
    # Force the migration of calendars
    if ! ynh_exec_warn /opt/yunohost/radicale_v1_temp/bin/python3 -m radicale --export-storage "$final_path/collections_new"
    then
        # Clean up if it fails to prevent further failures
        ynh_secure_remove --file="/opt/yunohost/radicale_v1_temp"
        ynh_secure_remove --file="$final_path/collections_new"
    fi
    # Backup the old collection
    mv "$final_path/collections" "$final_path/collections_v1"
    # And replace by the new one
    mv "$final_path/collections_new" "$final_path/collections"
    # Find a free port
    port=$(ynh_find_port --port=5232)
    ynh_app_setting_set --app=$app --key=port --value=$port

    ## Cleanup...
    ynh_secure_remove --file="$final_path/default_collections"
    ynh_secure_remove --file="$final_path/collections.props"
    # Remove the temporary virtualenv
    ynh_secure_remove --file="/opt/yunohost/radicale_v1_temp"
    # Remove uwsgi config
    ynh_secure_remove --file="$final_path/radicale.wsgi"
    ynh_secure_remove --file="/etc/uwsgi/apps-enabled/radicale.ini"
    ynh_secure_remove --file="/etc/uwsgi/apps-available/radicale.ini"
    ynh_systemd_action --service_name=uwsgi --action="restart"

    # Set permissions
    if [ $infcloud -eq 1 ]
    then
        ynh_permission_create --permission="infcloud" --url="${path_url%/}/infcloud" --allowed="$admin" --show_tile=true
    fi
    ynh_permission_update --permission="main" --add="visitors" --show_tile=false
fi


#=================================================
# 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=$app --home_dir="$final_path"

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

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

    # Copy files to the right place
    mkdir -p $final_path/collections
    
    if [ $infcloud -eq 1 ]
    then
        # Download and uncompress the source into final_path
        ynh_setup_source --dest_dir="$final_path/infcloud" --keep="config.js"
    fi
fi

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

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

# Overwrite the NGINX configuration only if it's allowed
if [ $overwrite_nginx -eq 1 ]
then
    ynh_script_progression --message="Upgrading NGINX web server configuration..."

    # Create a dedicated NGINX config
    ynh_add_nginx_config
    if [ $infcloud -eq 1 ]
    then
        # Add InfCloud in NGINX config
        ynh_replace_string --match_string="#INFCLOUD#" --replace_string="" --target_file="/etc/nginx/conf.d/$domain.d/$app.conf"
    fi
    ynh_store_file_checksum --file="/etc/nginx/conf.d/$domain.d/$app.conf"
fi

#=================================================
# UPGRADE DEPENDENCIES
#=================================================
ynh_script_progression --message="Upgrading dependencies..."

ynh_install_app_dependencies $pkg_dependencies

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

if [ $infcloud -eq 1 ]
then

    # Overwrite the php-fpm configuration only if it's allowed
    if [ $overwrite_phpfpm -eq 1 ]
    then
        ynh_script_progression --message="Upgrading PHP-FPM configuration..."

        # Create a dedicated PHP-FPM config
        ynh_add_fpm_config
        phpversion=$(ynh_app_setting_get --app=$app --key=phpversion)
    fi
fi

#=================================================
# SPECIFIC UPGRADE
#=================================================
# UPGRADE RADICALE IN ITS VIRTUALENV
#=================================================

if [ "$upgrade_type" == "UPGRADE_APP" ]
then
    ynh_script_progression --message="Upgrade Radicale in its virtualenv"
    # Upgrade pip packages
    ynh_secure_remove --file="/opt/yunohost/$app"
    virtualenv -p python3 /opt/yunohost/$app
    version=$(ynh_app_upstream_version)
    ynh_app_setting_set --app=$app --key=version --value="$version"
    /opt/yunohost/$app/bin/python3 -m pip install radicale==$version passlib bcrypt

    # Add LDAP plugin
#     (cd /opt/yunohost/$app
#     set +u; source bin/activate
# #     git clone https://github.com/marcoh00/radicale-auth-ldap
#     git clone https://github.com/cloudron-io/radicale-auth-ldap
#     cd radicale-auth-ldap
#     python3 -m pip install .)

    # Use htpasswd instead of ldap
    touch /etc/radicale/users
fi

chown radicale: -R /opt/yunohost/$app

find /opt/yunohost/$app/ -type d -exec chmod 2755 {} \;
find /opt/yunohost/$app/ -type f -exec chmod g+r,o+r {} \;

#=================================================
# CONFIGURE RADICALE
#=================================================
ynh_script_progression --message="Reconfigure Radicale"

# Overwrite the config file only if it's allowed
if [ $overwrite_config -eq 1 ]
then
    ynh_add_config --template="../conf/config" --destination="/etc/$app/config"
fi

chmod 755 /etc/$app/
chmod 644 /etc/$app/*

# Overwrite the InfCloud config file only if it's allowed
if [ $infcloud -eq 1 ]
then
    if [ $overwrite_infcloud -eq 1 ]
    then
        # InfCloud configuration
        # Set language
        case "$language" in
            "Czech") language="cs_CZ"
            ;;
            "Danish") language="da_DK"
            ;;
            "German") language="de_DE"
            ;;
            "English/US") language="en_US"
            ;;
            "Spanish") language="es_ES"
            ;;
            "French") language="fr_FR"
            ;;
            "Italian") language="it_IT"
            ;;
            "Japan") language="ja_JP"
            ;;
            "Hungarian") language="hu_HU"
            ;;
            "Dutch") language="nl_NL"
            ;;
            "Slovak") language="sk_SK"
            ;;
            "Turkish") language="tr_TR"
            ;;
            "Russian") language="ru_RU"
            ;;
            "Ukrainian") language="uk_UA"
            ;;
            "Chinese") language="zh_CN"
            ;;
        esac
        ynh_app_setting_set --app=$app --key=language --value=$language
        timezone=$(cat /etc/timezone)
        ynh_add_config --template="../conf/config.js" --destination="$final_path/infcloud/config.js"

        # Optional parameters from config-panel feature
        if [ -n "$firstdayofweek" ]; then
            ynh_replace_string --match_string="\(^var globalDatepickerFirstDayOfWeek=\).*" --replace_string="\1$firstdayofweek;" --target_file="$final_path/infcloud/config.js"
        fi
        if [ -n "$activeview" ]; then
            ynh_replace_string --match_string="\(^var globalActiveView=\).*" --replace_string="\1\'$activeview\';" --target_file="$final_path/infcloud/config.js"
        fi
        if [ -n "$openformmode" ]; then
            ynh_replace_string --match_string="\(^var globalOpenFormMode=\).*" --replace_string="\1\'$openformmode\';" --target_file="$final_path/infcloud/config.js"
        fi
        if [ -n "$startofbusiness" ]; then
            ynh_replace_string --match_string="\(^var globalCalendarStartOfBusiness=\).*" --replace_string="\1$startofbusiness;" --target_file="$final_path/infcloud/config.js"
        fi
        if [ -n "$endofbusiness" ]; then
            ynh_replace_string --match_string="\(^var globalCalendarEndOfBusiness=\).*" --replace_string="\1$endofbusiness;" --target_file="$final_path/infcloud/config.js"
        fi
        if [ -n "$defaulteventduration" ]; then
            ynh_replace_string --match_string="\(^var globalDefaultEventDuration=\).*" --replace_string="\1$defaulteventduration;" --target_file="$final_path/infcloud/config.js"
        fi
        # Recalculate and store the checksum of the file for the next upgrade.
        ynh_store_file_checksum --file="$final_path/infcloud/config.js"
        chmod 440 "$final_path/infcloud/config.js"
        chown $app:www-data "$final_path/infcloud/config.js"
    fi
fi

#=================================================
# GENERIC FINALIZATION
#=================================================
# SETUP LOGROTATE
#=================================================
ynh_script_progression --message="Upgrading logrotate configuration..."

mkdir -p /var/log/$app
touch /var/log/$app/$app.log
chown radicale -R /var/log/$app

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

#=================================================
# SETUP SYSTEMD
#=================================================
ynh_script_progression --message="Upgrading systemd configuration..." --weight=2

# Overwrite the systemd configuration only if it's allowed
if [ $overwrite_systemd -eq 1 ]
then
    ynh_replace_string --match_string="__APP__" --replace_string="$app" --target_file="../conf/systemd.service"
    ynh_replace_string --match_string="__FINALPATH__" --replace_string="$final_path" --target_file="../conf/systemd.service"
    ynh_add_systemd_config
fi

#=================================================
# INTEGRATE SERVICE IN YUNOHOST
#=================================================
ynh_script_progression --message="Integrating service in YunoHost..."

yunohost service add $app --log="/var/log/$app"

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

# ynh_systemd_action --service_name=uwsgi --action="restart"
ynh_systemd_action --service_name=$app --action="restart"

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

ynh_systemd_action --service_name=nginx --action=reload

#=================================================
# DEACTIVE MAINTENANCE MODE
#=================================================
ynh_script_progression --message="Disable maintenance mode"

ynh_maintenance_mode_OFF

#=================================================
# SEND A README FOR THE ADMIN
#=================================================

# Get main domain and buid the url of the admin panel of the app.
admin_panel="https://$(grep portal_domain /etc/ssowat/conf.json | cut -d'"' -f4)/yunohost/admin/#/apps/$app"

# Build the changelog
ynh_app_changelog || true

if [ $infcloud -eq 1 ]
then
    infcloud_config="
InfCloud has its own config file, at $final_path/infcloud/config.js
"
else
    infcloud_config=""
fi

echo "Use the file /etc/radicale/config to change the main configuration of radicale.
And the file /etc/radicale/rights to edit the way the calendars will be shared.
$infcloud_config
You can configure this app easily by using the experimental __URL_TAG1__config-panel feature__URL_TAG2__$admin_panel/config-panel__URL_TAG3__.
You can also find some specific actions for this app by using the experimental __URL_TAG1__action feature__URL_TAG2__$admin_panel/actions__URL_TAG3__.

If you're facing an issue or want to improve this app, please open a new issue in this __URL_TAG1__project__URL_TAG2__https://github.com/YunoHost-Apps/radicale_ynh__URL_TAG3__.

---

Changelog since your last upgrade:
$(cat changelog)" > mail_to_send

ynh_send_readme_to_admin --app_message="mail_to_send" --recipients="$admin" --type="upgrade"

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

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