#!/bin/bash

########################################################################################################################
# Define your deployment settings here
########################################################################################################################

# Set the URL of your local Docker registry where the images will be uploaded to. Leave it blank if you do not want to
# use any Docker registry.
REGISTRY_IMAGE=""
#REGISTRY_IMAGE="http://my-container-registry.local/"

# Set the list of components you want to build images for, and deploy.
COMPONENTS="context device automation service compute monitoring centralizedattackdetector"

# Set the tag you want to use for your images.
IMAGE_TAG="tf-dev"

# Set the name of the Kubernetes namespace to deploy to.
K8S_NAMESPACE="tf-dev"

########################################################################################################################
# Automated steps start here
########################################################################################################################

# Constants
CLONE_URL="https://gitlab.com/teraflow-h2020/controller.git"
GITLAB_REPO_URL="registry.gitlab.com/teraflow-h2020/controller"
TMP_FOLDER="./tmp"

# Create a tmp folder for files modified during the deployment
TMP_MANIFESTS_FOLDER="$TMP_FOLDER/manifests"
mkdir -p $TMP_MANIFESTS_FOLDER
TMP_LOGS_FOLDER="$TMP_FOLDER/logs"
mkdir -p $TMP_LOGS_FOLDER

# Re-create the namespace to prevent being affected by garbage on it
kubectl delete namespace $K8S_NAMESPACE
kubectl create namespace $K8S_NAMESPACE
printf "\n"

for COMPONENT in $COMPONENTS; do
    echo "Processing '$COMPONENT' component..."
    IMAGE_NAME="$COMPONENT:$IMAGE_TAG"
    IMAGE_URL="$REGISTRY_IMAGE/$IMAGE_NAME"

    echo "  Building Docker image..."
    BUILD_LOG="$TMP_LOGS_FOLDER/build_${COMPONENT}.log"

    if [ "$COMPONENT" == "automation" ]; then
        docker build -t "$IMAGE_NAME" -f ./src/"$COMPONENT"/Dockerfile ./src/"$COMPONENT"/ > "$BUILD_LOG"
    else 
        docker build -t "$IMAGE_NAME" -f ./src/"$COMPONENT"/Dockerfile ./src/ > "$BUILD_LOG"
    fi

    if [ -n "$REGISTRY_IMAGE" ]; then
        echo "Pushing Docker image to '$REGISTRY_IMAGE'..."

        TAG_LOG="$TMP_LOGS_FOLDER/tag_${COMPONENT}.log"
        docker tag "$IMAGE_NAME" "$IMAGE_URL" > "$TAG_LOG"

        PUSH_LOG="$TMP_LOGS_FOLDER/push_${COMPONENT}.log"
        docker push "$IMAGE_URL" > "$PUSH_LOG"
    fi

    echo "  Adapting '$COMPONENT' manifest file..."
    MANIFEST="$TMP_MANIFESTS_FOLDER/${COMPONENT}service.yaml"
    cp ./manifests/"${COMPONENT}"service.yaml "$MANIFEST"
    VERSION=$(grep -i "${GITLAB_REPO_URL}/${COMPONENT}:" "$MANIFEST" | cut -d ":" -f3)

    if [ -n "$REGISTRY_IMAGE" ]; then

        sed -E -i "s#image: $GITLAB_REPO_URL/$COMPONENT:${VERSION}#image: $IMAGE_URL#g" "$MANIFEST"
        sed -E -i "s#imagePullPolicy: .*#imagePullPolicy: Always#g" "$MANIFEST"
   
    else
        sed -E -i "s#image: $GITLAB_REPO_URL/$COMPONENT:${VERSION}#image: $IMAGE_NAME#g" "$MANIFEST"
        sed -E -i "s#imagePullPolicy: .*#imagePullPolicy: Never#g" "$MANIFEST"        
    fi

    echo "  Deploying '$COMPONENT' component to Kubernetes..."
    DEPLOY_LOG="$TMP_LOGS_FOLDER/push_${COMPONENT}.log"
    kubectl --namespace $K8S_NAMESPACE apply -f "$MANIFEST" > "$DEPLOY_LOG"
    printf "\n"
done

kubectl --namespace $K8S_NAMESPACE get all

echo "Done!"