#!/usr/bin/env bash

set -euo pipefail

RUNTIME_OPTIONS=()
CUSTOM_OPTIONS=()
RUN_COMMAND=()

env | grep -v -E "^(#|;| |PATH|SHLVL|HOSTNAME|DOCKER_*)" | awk '$1 ~ /^\w+=/' | xargs -0 > "/docker-run-action.env"

# login to container registry
if [ -n "${INPUT_USERNAME}" ]; then
    echo "${INPUT_PASSWORD}" | docker login "${INPUT_REGISTRY}" -u "${INPUT_USERNAME}" --password-stdin
fi

# set custom network
if [ -n "${INPUT_DOCKER_NETWORK}" ]; then
    RUNTIME_OPTIONS+=(--network "${INPUT_DOCKER_NETWORK}")
fi

# mount docker socket
if [ "${INPUT_MOUNT_SOCKET,,}" == "true" ]; then
    RUNTIME_OPTIONS+=(--volume "/var/run/docker.sock:/var/run/docker.sock")
fi

# map volumes
mapfile -t TMP_VOLUMES < <(printf ${INPUT_VOLUMES})
for vol in "${TMP_VOLUMES[@]}"; do
    RUNTIME_OPTIONS+=(--volume "${vol}")
done

# get custom options
mapfile -t TMP_OPTIONS < <(printf ${INPUT_OPTIONS})
for opt in "${TMP_OPTIONS[@]}"; do
    CUSTOM_OPTIONS+=("${opt}")
done

# get run command
mapfile -t TMP_RUN < <(printf ${INPUT_RUN})
for cmd in "${TMP_RUN[@]}"; do
    RUN_COMMAND+=("${cmd}")
done

exec docker run \
    --rm \
    --volume "${INPUT_WORKDIR}:${INPUT_WORKDIR}" \
    --workdir "${INPUT_WORKDIR}" \
    --entrypoint="${INPUT_SHELL}" \
    --env-file "/docker-run-action.env" \
    "${RUNTIME_OPTIONS[@]}" \
    "${CUSTOM_OPTIONS[@]}" \
    "${INPUT_IMAGE}" \
    "${RUN_COMMAND[@]}"