#!/bin/bash

## Init is run on host
## For now it is run every time the script is launched, but
## it should be launched only once after build.

## Accessible variables are:
## - SERVICE_NAME        Name of current service
## - DOCKER_BASE_IMAGE   Base image from which this service might be built if any
## - SERVICE_DATASTORE           Location on host of the DATASTORE of this service
## - SERVICE_CONFIGSTORE         Location on host of the CONFIGSTORE of this service


set -e

server="$(options-get server)" || exit 1
secret="$(options-get secret)" || exit 1
name="$(options-get name)" || true
capacity="$(options-get capacity)" || true

name=${name:-"$(hostname)/$SERVICE_NAME"}
capacity=${capacity:-2}

service_def=$(get_compose_service_def "$SERVICE_NAME") || exit 1
labels_def=$(e "$service_def" | shyaml get-value options.labels) || true
[ "$labels_def" == None ] && labels_def=""
if [ "$labels_def" ]; then
    labels=""
    while read-0 label value; do
        var+="$label:$value,"
    done < <(printf "%s" "$labels_def" | shyaml key-values-0)
    labels="${var::-1}"
fi

init-config-add "\
$MASTER_BASE_SERVICE_NAME:
  environment:
    DRONE_RPC_SERVER: $server
    DRONE_RPC_SECRET: $secret
    DRONE_RUNNER_NAME: $name
    DRONE_RUNNER_CAPACITY: $capacity
    $([ "$labels" ] && echo "DRONE_RUNNER_LABELS: '$labels'")
  volumes:
    - /var/run/docker.sock:/var/run/docker.sock
"