#!/usr/bin/env bash

INPUT_IMAGE_NAME=$imageName
INPUT_IMAGE_PREFIX=$imagePrefix
INPUT_PUSH_IMAGE=$push
INPUT_PULL_CACHE=$pullCache
INPUT_DOCKERFILE_PATH=$path
INPUT_PLATFORM=$platform
INPUT_EXPORT_TAR=$exportTarPath

set -e

# shellcheck disable=SC2155
export LOWERCASE_INPUT_IMAGE_PREFIX="$(echo "$INPUT_IMAGE_PREFIX" | tr '[:upper:]' '[:lower:]')"
IMAGE_NAME="$(echo "$LOWERCASE_INPUT_IMAGE_PREFIX" | sed 's/^https\?:\/\///')$INPUT_IMAGE_NAME"

if [ -n "$DOCKER_CONFIG_BASE64" ]; then
  echo "Retrieving docker config"
  mkdir "$HOME/.docker/"
  echo "$DOCKER_CONFIG_BASE64" | base64 -d > "$HOME/.docker/config.json"
fi;

echo "Full image name: $IMAGE_NAME"

if [ -z "$INPUT_IMAGE_NAME" ]; then
  echo "No image name given."
  exit 1
fi;

DOCKER_BUILD_OPTIONS=("--progress" "plain" "-t" "$IMAGE_NAME")

if [ -n "$INPUT_PLATFORM" ]; then
  DOCKER_BUILD_OPTIONS+=("--platform" "$INPUT_PLATFORM" "--pull")
fi

if [ "$INPUT_PUSH_IMAGE" = "true" ]; then
  DOCKER_BUILD_OPTIONS+=("--output=type=image,name=${IMAGE_NAME},push=true,compression=zstd,compression-level=8,force-compression=true,oci-mediatypes=true")
fi

if [ "$INPUT_PULL_CACHE" = "true" ]; then
  IMAGE_CACHE_NAME="${IMAGE_NAME%%:*}:build-cache"
  DOCKER_BUILD_OPTIONS+=("--cache-from" "type=registry,ref=${IMAGE_CACHE_NAME}")
  DOCKER_BUILD_OPTIONS+=("--cache-to" "type=registry,image-manifest=true,oci-mediatypes=true,ref=${IMAGE_CACHE_NAME},mode=max")
  echo "Using docker image cache ${IMAGE_CACHE_NAME}"
fi

if [ -n "$INPUT_EXPORT_TAR" ]; then
  DOCKER_BUILD_OPTIONS+=("--output" "type=docker,dest=$INPUT_EXPORT_TAR")
fi

DOCKER_BUILD_OPTIONS+=("--rm")
DOCKER_BUILD_OPTIONS+=("${INPUT_DOCKERFILE_PATH}")
# shellcheck disable=SC2145
echo "Running docker buildx with options: ${DOCKER_BUILD_OPTIONS[@]}"

echo "Building and pushing !"
docker buildx build "${DOCKER_BUILD_OPTIONS[@]}"
echo "Cleaning up docker"
docker system prune --all --force --filter label!=ACT_IMAGE=true

echo "imageName=${IMAGE_NAME}" >> "$GITEA_OUTPUT"

exit 0