#!/bin/sh

set -e
IFS=$'\n\t'

source scripts/build-helpers.sh

function print_golang_args() {

    case "$1" in
        1.12)
            INSTALL_GOLANG_VERSION=1.12.13
            GOLANG_DOWNLOAD_SHA256=da036454cb3353f9f507f0ceed4048feac611065e4e1818b434365eb32ac9bdc
            ;;
        1.13)
            INSTALL_GOLANG_VERSION=1.13.4
            GOLANG_DOWNLOAD_SHA256=692d17071736f74be04a72a06dab9cac1cd759377bd85316e52b2227604c004c
            ;;
        1.14)
            INSTALL_GOLANG_VERSION=1.14.1
            GOLANG_DOWNLOAD_SHA256=2f49eb17ce8b48c680cdb166ffd7389702c0dec6effa090c324804a5cac8a7f8
            ;;
        *) echo "Unknown golang version $1"; exit 1;
    esac

    printf -- "--build-arg INSTALL_GOLANG_VERSION=%s " "$INSTALL_GOLANG_VERSION"
    printf -- "--build-arg GOLANG_DOWNLOAD_SHA256=%s " "$GOLANG_DOWNLOAD_SHA256"
}

# If you add a new minor version here, be sure to check that the
# ChromeDriver supports this: https://sites.google.com/a/chromium.org/chromedriver/downloads
# You may need to bump the version in scripts/install-chrome.
function print_chrome_args() {
    case "$1" in
        69|69.0)
            CHROME_VERSION=69.0.3497.81-1
            CHROME_DRIVER_VERSION=2.41
            ;;
        71|71.0)
            CHROME_VERSION=71.0.3578.98-1
            CHROME_DRIVER_VERSION=2.45
            ;;
        73|73.0)
            CHROME_VERSION=73.0.3683.103-1
            CHROME_DRIVER_VERSION=73.0.3683.68
            ;;
        74|74.0)
            CHROME_VERSION=74.0.3729.169-1
            CHROME_DRIVER_VERSION=74.0.3729.6
            ;;
        81|81.0)
            CHROME_VERSION=81.0.4044.129-1
            CHROME_DRIVER_VERSION=81.0.4044.69
            ;;
        *) echo "Unknown chrome version $1"; exit 1;
    esac
    printf -- "--build-arg CHROME_VERSION=%s " "$CHROME_VERSION"
    printf -- "--build-arg CHROME_DRIVER_VERSION=%s " "$CHROME_DRIVER_VERSION"
}

# see https://www.kernel.org/pub/software/scm/git
function print_git_args() {
    case "$1" in
        2.18)
            GIT_VERSION=2.18.0
            GIT_DOWNLOAD_SHA256=94faf2c0b02a7920b0b46f4961d8e9cad08e81418614102898a55f980fa3e7e4
            ;;
        2.21)
            GIT_VERSION=2.21.0
            GIT_DOWNLOAD_SHA256=85eca51c7404da75e353eba587f87fea9481ba41e162206a6f70ad8118147bee
            ;;
        2.22)
            GIT_VERSION=2.22.0
            GIT_DOWNLOAD_SHA256=a4b7e4365bee43caa12a38d646d2c93743d755d1cea5eab448ffb40906c9da0b
            ;;
        2.24)
            GIT_VERSION=2.24.3
            GIT_DOWNLOAD_SHA256=ef6d1d1de1d7921a54d23d07479bd2766f050d6435cea5d3b5322aa4897cb3d7
            ;;
        2.26)
            GIT_VERSION=2.26.2
            GIT_DOWNLOAD_SHA256=e1c17777528f55696815ef33587b1d20f5eec246669f3b839d15dbfffad9c121
            ;;
        *) echo "Unknown git version $1"; exit 1;
    esac

    printf -- "--build-arg GIT_VERSION=%s " "$GIT_VERSION"
    printf -- "--build-arg GIT_DOWNLOAD_SHA256=%s " "$GIT_DOWNLOAD_SHA256"
}

# see https://github.com/git-lfs/git-lfs/releases
function print_lfs_args() {
    case "$1" in
        2.9)
            LFS_VERSION=2.9.1
            LFS_DOWNLOAD_SHA256=2a8e60cf51ec45aa0f4332aa0521d60ec75c76e485d13ebaeea915b9d70ea466
            ;;
        *) echo "Unknown Git LFS version $1"; exit 1;
    esac

    printf -- "--build-arg LFS_VERSION=%s " "$LFS_VERSION"
    printf -- "--build-arg LFS_DOWNLOAD_SHA256=%s " "$LFS_DOWNLOAD_SHA256"
}

function print_node_args() {
    case "$1" in
        8.x) NODE_INSTALL_VERSION=8.16.0 ;;
        10.x) NODE_INSTALL_VERSION=10.16.0 ;;
        12.x) NODE_INSTALL_VERSION=12.4.0 ;;
        *) echo "Unknown node version $1"; exit 1;
    esac
    printf -- "--build-arg NODE_INSTALL_VERSION=%s " "$NODE_INSTALL_VERSION"
}

function print_yarn_args() {
    case "$1" in
        1.12) YARN_INSTALL_VERSION=1.12.3-1 ;;
        1.16) YARN_INSTALL_VERSION=1.16.0-1 ;;
        1.21) YARN_INSTALL_VERSION=1.21.1-1 ;;
        *) echo "Unknown yarn version $1"; exit 1;
    esac
    printf -- "--build-arg YARN_INSTALL_VERSION=%s " "$YARN_INSTALL_VERSION"
}

function print_postgres_args() {
    printf -- "--build-arg POSTGRES_VERSION=%s " "$1"
}

function print_ansible_args() {
    printf -- "--build-arg ANSIBLE_VERSION=%s " "$1"
}

function print_docker_args() {
    printf -- "--build-arg DOCKER_VERSION=%s " "$1"
}

function print_terraform_args() {
    case "$1" in
       0.11)
            TERRAFORM_VERSION=0.11.7
            TERRAFORM_DOWNLOAD_SHA256=6b8ce67647a59b2a3f70199c304abca0ddec0e49fd060944c26f666298e23418
            ;;
        *) echo "Unknown terraform version $1"; exit 1;
    esac

    printf -- "--build-arg TERRAFORM_VERSION=%s " "$TERRAFORM_VERSION"
    printf -- "--build-arg TERRAFORM_DOWNLOAD_SHA256=%s " "$TERRAFORM_DOWNLOAD_SHA256"
}

function print_graphicsmagick_args() {
    case "$1" in
        1.3.29)
            GRAPHISMAGICK_VERSION=1.3.29
            GRAPHISMAGICK_DOWNLOAD_SHA256=de820cd10597205941a7e9d02c2e679231e92e8e769c204ef09034d2279ad453
            ;;
        1.3.33)
            GRAPHISMAGICK_VERSION=1.3.33
            GRAPHISMAGICK_DOWNLOAD_SHA256=00ea0df7c78c903cce325f402429bcd3924168cf39277f743a0641d47c411ee8
            ;;
        1.3.34)
            GRAPHISMAGICK_VERSION=1.3.34
            GRAPHISMAGICK_DOWNLOAD_SHA256=4717f7a32d964c515d83706fd52d34e089c2ffa35f8fbf43c923ce19343cf2f4
            ;;
        *) echo "Unknown graphicsmagick version $1"; exit 1;
    esac

    printf -- "--build-arg GRAPHISMAGICK_VERSION=%s " "$GRAPHISMAGICK_VERSION"
    printf -- "--build-arg GRAPHISMAGICK_DOWNLOAD_SHA256=%s " "$GRAPHISMAGICK_DOWNLOAD_SHA256"
}

function parse_arguments() {
    read base
    read base_version

    # Lock Ruby to Debian stretch
    case "$base" in
        ruby) base_version="$base_version-stretch" ;;
    esac

    printf -- "-f Dockerfile.custom " "$base"
    printf -- "--build-arg CUSTOM_IMAGE_NAME=%s " "$base"
    printf -- "--build-arg CUSTOM_IMAGE_VERSION=%s " "$base_version"
    while read image; do
        read version
        case "$image" in
            golang) print_golang_args $version ;;
            chrome) print_chrome_args $version ;;
            docker) print_docker_args $version ;;
            git) print_git_args $version ;;
            lfs) print_lfs_args $version ;;
            node) print_node_args $version ;;
            yarn) print_yarn_args $version ;;
            postgresql) print_postgres_args $version ;;
            ansible) print_ansible_args $version ;;
            terraform) print_terraform_args $version ;;
            graphicsmagick) print_graphicsmagick_args $version ;;
            *) exit 1;;
        esac
    done
}

function generate_command() {
    build_image_name=$1; shift;

    printf -- "docker build "
    echo $build_image_name | tr '-' '\n' | parse_arguments

    for i in "$@"
    do
        printf -- "%s " "$i"
    done
    printf -- ".\\n"
}

function build_custom_if_needed() {
    build_image_name=$1
    full_image_name="$CI_REGISTRY_IMAGE:$build_image_name"

    if [[ "$FORCE_BUILD" == "true" ]] || ! image_already_exists $full_image_name; then
      docker_command=$(generate_command $@)
      if [[ "$FORCE_BUILD" == "true" ]]; then
        echo "Force building $build_image_name due to \$FORCE_BUILD=true with $docker_command"
      else
        echo "Building $build_image_name with $docker_command"
      fi
      eval $docker_command
    else
      echo "$build_image_name already exists, skipping build."
    fi
}

build_custom_if_needed $@