#!/usr/bin/env bash

set -o errexit
set -o nounset
set -o pipefail

function usage() {
    echo "usage: $0 [options]"
    echo "Bootstraps the flow instance"
    echo ""
    echo "-h,--help: print this help message"
    echo "--network-forge-flow-subnet: The subnet for the forge flow docker network. (default: 172.20.0.0/24)"
    echo "--traefik-container-ipv4-address: The IPv4 address of the traefik container. (default: 172.20.0.2)"
    echo "--traefik-check-new-version: Set to true to enable automatic checks for new Traefik versions. (default: true)"
    echo "--traefik-domain: The root domain of the traefik. (default: localhost)"
    echo "--traefik-external-ssh-port: The external SSH port to expose for Gitea. (default: 22)"
}

while [[ $# -gt 0 ]]; do
    arg="$1"
    case $arg in
        -h|--help)
            usage
            exit 0
            ;;
        --network-forge-flow-subnet)
            NETWORK_FORGE_FLOW_SUBNET=$2
            shift
            shift
            ;;
        --traefik-container-ipv4-address)
            TRAEFIK_CONTAINER_IPV4_ADDRESS=$2
            shift
            shift
            ;;
        --traefik-check-new-version)
            TRAEFIK_CHECK_NEW_VERSION=$2
            shift
            shift
            ;;
        --traefik-domain)
            TRAEFIK_DOMAIN=$2
            shift
            shift
            ;;
        --traefik-external-ssh-port)
            TRAEFIK_EXTERNAL_SSH_PORT=$2
            shift
            shift
            ;;
        --traefik-log-level)
            TRAEFIK_LOG_LEVEL=$2
            shift
            shift
            ;;
        --traefik-send-anonymous-usage)
            TRAEFIK_SEND_ANONYMOUS_USAGE=$2
            shift
            shift
            ;;
        --traefik-version)
            TRAEFIK_VERSION=$2
            shift
            shift
            ;;
        *)
            # unknown argument
            shift
            ;;
    esac
done

source /etc/flow/setup/env
DOCKER_ROOT="/home/${FLOW_USERNAME}/Docker/flow"

export NETWORK_FORGE_FLOW_SUBNET="${NETWORK_FORGE_FLOW_SUBNET:-172.20.0.0/24}"

export TRAEFIK_DOCKER_DIR="${DOCKER_ROOT}/traefik"
export TRAEFIK_CHECK_NEW_VERSION="${TRAEFIK_CHECK_NEW_VERSION:-true}"
export TRAEFIK_DOMAIN="${TRAEFIK_DOMAIN:-localhost}"
export TRAEFIK_EXTERNAL_SSH_PORT="${TRAEFIK_EXTERNAL_SSH_PORT:-22}"
export TRAEFIK_LOG_LEVEL="${TRAEFIK_LOG_LEVEL:-info}"
export TRAEFIK_SEND_ANONYMOUS_USAGE="${TRAEFIK_SEND_ANONYMOUS_USAGE:-false}"
export TRAEFIK_VERSION="${TRAEFIK_VERSION:-v2.6.3}"
export TRAEFIK_CONTAINER_IPV4_ADDRESS="${TRAEFIK_CONTAINER_IPV4_ADDRESS:-172.20.0.2}"
export TRAEFIK_SHARED_MOUNT_POINT="/flow/shared/traefik"

mkdir -p "${DOCKER_ROOT}"
envsubst < "${ROOT_SETUP_DIRECTORY}/template/compose/docker-compose.yaml" > "${DOCKER_ROOT}/docker-compose.yaml"

# Traefik setup section
mkdir -p "${TRAEFIK_DOCKER_DIR}"
cp "${ROOT_SETUP_DIRECTORY}/template/traefik/Dockerfile" "${TRAEFIK_DOCKER_DIR}/Dockerfile"

for i in $(find "${ROOT_SETUP_DIRECTORY}/template/traefik" -type f -mindepth 1 -not -name *Dockerfile); do
    file=$(basename ${i})
    envsubst < "${ROOT_SETUP_DIRECTORY}/template/traefik/${file}" > "${TRAEFIK_DOCKER_DIR}/${file}"
done

chown -R ${FLOW_USERNAME}:${FLOW_USERNAME} /home/${FLOW_USERNAME}/Docker
chmod -R a-rwx,u+rwX /home/${FLOW_USERNAME}/Docker

rc-service docker start