#!/usr/bin/env bash

set -e

# see https://docs.docker.com/develop/develop-images/build_enhancements/#to-enable-buildkit-builds
export DOCKER_BUILDKIT=1

if [[ -z $1 ]] || [[ -z $2 ]]; then
    echo "usage: scripts/docker/build.sh [image] [tag] [/subimage]" 1>&2
    exit 1
fi

NUMERIC='^[0-9]+$'
GOPROXY=${GOPROXY:-'https://proxy.golang.org,direct'}
DOCKER_TAG=$(date -u +%Y%m%d)

if [[ $1 ]] && [[ -z $2 || $2 == "preview" ]]; then
    echo "docker/build: building photoprism/$1:preview from docker/${1/-//}$3/Dockerfile...";
    docker build \
      --pull \
      --no-cache \
      --build-arg BUILD_TAG=$DOCKER_TAG \
      --build-arg GOPROXY \
      --build-arg GODEBUG \
      -t photoprism/$1:preview \
      -f docker/${1/-//}$3/Dockerfile .
elif [[ $2 =~ $NUMERIC ]]; then
    echo "docker/build: building photoprism/$1:$2,$1:latest from docker/${1/-//}$3/Dockerfile...";

    if [[ $4 ]]; then
      echo "extra params: $4"
    fi

    docker build $4\
      --pull \
      --no-cache \
      --build-arg BUILD_TAG=$2 \
      --build-arg GOPROXY \
      --build-arg GODEBUG \
      -t photoprism/$1:latest \
      -t photoprism/$1:$2 \
      -f docker/${1/-//}$3/Dockerfile .
elif [[ $2 == *"preview"* ]]; then
    echo "docker/build: building photoprism/$1:$2 from docker/${1/-//}$3/Dockerfile...";

    if [[ $4 ]]; then
      echo "extra params: $4"
    fi

    docker build $4\
      --pull \
      --no-cache \
      --build-arg BUILD_TAG=$DOCKER_TAG \
      --build-arg GOPROXY \
      --build-arg GODEBUG \
      -t photoprism/$1:$2 \
      -f docker/${1/-//}$3/Dockerfile .
else
    echo "docker/build: building photoprism/$1:$2,$1:$DOCKER_TAG-$2 from docker/${1/-//}$3/Dockerfile...";

    if [[ $4 ]]; then
      echo "extra params: $4"
    fi

    docker build $4\
      --pull \
      --no-cache \
      --build-arg BUILD_TAG=$DOCKER_TAG \
      --build-arg GOPROXY \
      --build-arg GODEBUG \
      -t photoprism/$1:$2 \
      -t photoprism/$1:$DOCKER_TAG-$2 $5 \
      -f docker/${1/-//}$3/Dockerfile .
fi

echo "docker/build: done"