#!/usr/bin/env bash

image="chewingbever/fej"
# Should be either dev or rel
mode="dev"
action=""
attach="--detach"

while getopts ":i:m:a:l" c; do
    case $c in
        i ) image="$OPTARG" ;;
        m ) mode="$OPTARG" ;;
        a ) action="$OPTARG" ;;
        l ) attach="" ;;
        ? ) exit 1 ;;
    esac
done
shift $((OPTIND-1))

# Extract current version from Cargo.toml & get current branch
patch_version=`grep -Po '(?<=version = ").*(?=")' Cargo.toml | head -n1`
major_version=`echo "$patch_version" | sed -E 's/([0-9]+)\.([0-9]+)\.([0-9]+)/\1/'`
minor_version=`echo "$patch_version" | sed -E 's/([0-9]+).([0-9]+).([0-9]+)/\1.\2/'`
branch=`git rev-parse --abbrev-ref HEAD`

if [[ "$branch" = "master" ]]; then
    tags=("$patch_version" "$minor_version" "$major_version" "latest")

elif [[ "$branch" = "develop" ]]; then
    tags=("$patch_version-dev" "$minor_version-dev" "$major_version-dev" "dev")

else
    tags=("$branch")

fi

# First, we build the builder
DOCKER_BUILDKIT=1 docker build -f docker/Dockerfile.builder -t "$image-builder:latest" .

# Run the actual build command
if [ "$mode" = "rel" ]; then
    DOCKER_BUILDKIT=1 docker build -t "$image:$tags" -f docker/Dockerfile.rel .

elif [[ "$mode" = "dev" ]]; then
    DOCKER_BUILDKIT=1 docker build -t "$image-dev:$tags" -f docker/Dockerfile.dev .

else
    >&2 echo "Invalid mode."
    exit 1

fi

if [[ "$action" = push ]]; then
    [[ "$branch" =~ ^develop|master$ ]] || {
        >&2 echo "You can only push from develop or master."
        exit 2
    }

    [[ "$mode" = "rel" ]] || {
        >&2 echo "You can only push release builds."
        exit 3
    }

    for tag in "${tags[@]}"; do
        # Create the tag
        docker tag "$image:$tags" "$image:$tag"

        # Push the tag
        docker push "$image:$tag"

        # Remove the tag again, if it's not the main tag
        [[ "$tag" != "$tags" ]] && docker rmi "$image:$tag"
    done

elif [[ "$action" = run ]]; then
    # Create the network & start the database container
    docker network create fej
    docker volume create fej_db-data

    docker run --rm \
        --detach \
        --name fej_db \
        --network fej \
        -e "POSTGRES_DB=fej" \
        -e "POSTGRES_USER=fej" \
        -e "POSTGRES_PASSWORD=fej" \
        -v 'fej_db-data:/var/lib/postgresql/data' \
        postgres:13-alpine

    if [[ "$mode" = "dev" ]]; then
        # Create caching volumes if needed (they need to be named)
        docker volume create fej_build-cache
        docker volume create fej_registry-cache

        flags="-v fej_build-cache:/usr/src/app/target -v fej_registry-cache:/root/.cargo/registry"
    fi

    docker run $attach $flags \
        --rm \
        --interactive \
        --tty \
        --publish 8000:8000 \
        --name fej \
        --env-file .env \
        --network fej \
        "$image$([[ "$mode" != "rel" ]] && echo "-dev"):$tags" "$@"
fi