#!/bin/bash

usage() {
    echo -n "Usage: ${0}  <RootDir>"
    echo
    exit 1
}
# --- Settings
RootDir=${1}
if [ -z "${RootDir}" ] ; then
    usage
fi

RegistryService=cloud21.cvtt.vpn:5500
RegistryProtocol=http

ConfigUrl=http://cloud23.cvtt.vpn:6789/admin/docker_images


ReleaseHost="cloud21.cvtt.vpn"
ReleasePort="22"
ReleaseUser="cvttdist"
ReleaseDir="/home/cvttdist/software/cvtt2"

DIMAGES_CONFIG=$(curl -s ${ConfigUrl} | ${HOME}/bin/hjson -j)

# RootDir=/home/oleg/prod
SetVersionScript=/home/oleg/prod/ops/scripts/set_version.sh


# --------------- D E B U G

mkdir -p ${RootDir}

build_docker_image() {
    title=${1}
    image_name=${2}
    docker_dev=${3}
    project=${4}

    echo "Building ${title}..."
    echo "ImageName=${image_name}"
    echo "DockerDev=${docker_dev}"
    echo "BasedOnDist=${project}"

    # Get Latest DIST version
    echo "Checking for latest version of ${project} on ${ReleaseUser}@${ReleaseHost}:${ReleaseDir}"
    image_version=$(get_latest_dist_version ${project})
    if [ -z "${image_version}" ]; then
        echo "No latest version found for ${project}"
        exit 1
    fi
    echo "Latest version is ${image_version}"

    if image_exists "${image_name}" "${image_version}"; then
        echo "Image $image_name:$image_version exists in the registry. Building is not required."
        return
    fi
    echo "Image $image_name:$image_version does not exist in the registry."
    echo "getting lastest version of ${project} on ${ReleaseUser}@${ReleaseHost}:${ReleaseDir}"
    ${SetVersionScript} ${project} ${image_version}

    DockerDir=./docker_dev/${docker_dev}
    echo "Building ${title}... on ${DockerDev}"

    Cmd="docker build"
    Cmd+=" -t ${image_name}"
    Cmd+=" -t ${image_name}:latest"
    Cmd+=" -t ${image_name}:${image_version}"
    Cmd+=" -f ${DockerDir}/Dockerfile ${RootDir}"
    echo ${Cmd}
    eval ${Cmd} || exit

    Cmd="docker tag"
    Cmd+=" ${image_name}:latest"
    Cmd+=" ${RegistryService}/${image_name}:latest"
    echo ${Cmd}
    eval ${Cmd} || exit

    Cmd="docker tag"
    Cmd+=" ${image_name}:${image_version}"
    Cmd+=" ${RegistryService}/${image_name}:${image_version}"
    echo ${Cmd}
    eval ${Cmd} || exit

    Cmd="docker push"
    Cmd+=" ${RegistryService}/${image_name}:latest"
    echo ${Cmd}
    eval ${Cmd} || exit

    Cmd="docker push"
    Cmd+=" ${RegistryService}/${image_name}:${image_version}"
    echo ${Cmd}
    eval ${Cmd} || exit


}

image_exists() {
    image_name=${1}
    version=${2}
    response=$(curl -s -o /dev/null -w "%{http_code}" "${RegistryProtocol}://${RegistryService}/v2/${image_name}/manifests/${version}" -H "Accept: application/vnd.docker.distribution.manifest.v2+json")
    if [ "$response" -eq 200 ]; then
        return 0
    else
        return 1
    fi
}

get_latest_dist_version() {
    project=${1}

    Version=$(ssh -q -p ${ReleasePort} ${ReleaseUser}@${ReleaseHost} "ls -tr ${ReleaseDir}/${project} | tail -1" )
    echo "${Version}"
}

echo RootDir=${RootDir}

cd ${RootDir}
echo "Getting latest version of docker_dev"
Cmd="${SetVersionScript} docker_dev latest"
echo ${Cmd}
eval ${Cmd}

echo "${DIMAGES_CONFIG}" | jq -c 'to_entries[]' | while IFS= read -r item; do
    # Extract key (name) and values
    title=$(echo "$item" | jq -r '.key')
    image_name=$(echo "$item" | jq -r '.value.image_name')
    docker_dev=$(echo "$item" | jq -r '.value.docker_dev')
    project=$(echo "$item" | jq -r '.value.based_on_dist')
    build_docker_image "$title" "$image_name" "$docker_dev" "$project"
done

exit
#===============================================================================
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