#!/bin/bash

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

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

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

ynh_maintenance_mode_ON

#=================================================
# INSTALL LXD
#=================================================
ynh_script_progression --message="Installing LXD... (this make take a long time!)"

if ! yunohost app list --output-as json --quiet | jq -e '.apps[] | select(.id == "lxd")' >/dev/null; then
    yunohost app install --force https://github.com/YunoHost-Apps/lxd_ynh
fi

#=================================================
# STOP SYSTEMD SERVICE
#=================================================
ynh_script_progression --message="Stopping $app's systemd service..."

ynh_systemd_action --service_name="$app" --action="stop" --log_path="systemd" --line_match="Stopped YunoRunner CI"

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

if [ ! -d "$install_dir/.git/" ]; then
    ynh_exec_as "$app" git -C "$install_dir" init -b main
    git -C "$install_dir" remote add origin "$yunorunner_repository"
fi

# Close a legacy port
if yunohost firewall list | grep -q "\- $port$"; then
    ynh_exec_warn_less yunohost firewall disallow TCP "$port"
fi

if [[ -z "${context:-}" ]]; then
    if grep -q "CI_APP" /etc/hosts; then
        context=official_infra
    else
        context=personal_ci
    fi
    ynh_app_setting_set --app="$app" --key="context" --value="$context"
fi

if [[ -z "${cluster:-}" ]]; then
    if lxc cluster list >/dev/null 2>&1; then
        cluster=1
    else
        cluster=0
    fi
    ynh_app_setting_set --app="$app" --key="cluster" --value="$cluster"
fi

if [[ -z "${backend:-}" ]]; then
    backend=lxd
    ynh_app_setting_set --app="$app" --key="backend" --value="$backend"
fi

# Values now use underscore
if echo "$context" | grep -- -; then
    context=$(echo "$context" | tr - _)
    ynh_app_setting_set --app="$app" --key="context" --value="$context"
fi

# cluster is now a boolean
if [[ "$cluster" == "cluster" ]] || [[ "$cluster" == "no" ]]; then
    if [[ "$cluster" == "cluster" ]]; then
        cluster=1
    else
        cluster=0
    fi
    ynh_app_setting_set --app="$app" --key="cluster" --value="$cluster"
fi

# Remove Pythonz
ynh_secure_remove --file="$install_dir/.pythonz"

#=================================================
# DOWNLOAD, CHECK AND UNPACK SOURCE
#=================================================
ynh_script_progression --message="Upgrading source files..."

# Download, check integrity, uncompress and patch the source from app.src
pushd "$install_dir"
    ynh_exec_as "$app" git fetch --quiet --depth=1 origin "$yunorunner_release"
    ynh_exec_as "$app" git reset --quiet --hard FETCH_HEAD
popd

chmod -R o-rwx "$install_dir"
chown -R "$app:$app" "$install_dir"

#=================================================
# INSTALL PYTHON DEPENDENCIES
#=================================================
ynh_script_progression --message="Installing Python dependencies..."

pushd "$install_dir"
    python3 -m venv venv
    venv/bin/pip install --upgrade pip
    venv/bin/pip install -r requirements-frozen.txt
popd

#=================================================
# UPDATE A CONFIG FILE
#=================================================
ynh_script_progression --message="Updating a config file..."

ynh_backup_if_checksum_is_different --file="$install_dir/config.py"

chmod 400 "$install_dir/config.py"
chown "$app:$app" "$install_dir/config.py"

#=================================================
# REAPPLY SYSTEM CONFIGURATIONS
#=================================================
ynh_script_progression --message="Upgrading system configurations related to $app..." --weight=1

# Create a dedicated NGINX config
ynh_add_nginx_config

# Create a dedicated systemd config
ynh_add_systemd_config
yunohost service add "$app" --description="$app daemon for YunoRunner" $(exposed_ports_if_cluster)

ynh_add_config --template="cron" --destination="/etc/cron.d/$app"

#=================================================
# START SYSTEMD SERVICE
#=================================================
ynh_script_progression --message="Starting $app's systemd service..."

ynh_systemd_action --service_name="$app" --action="start" --log_path="systemd" --line_match="Started YunoRunner CI" --timeout=30

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

ynh_maintenance_mode_OFF

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

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