app.json

{
    "name": "appsheet-api-template",
    "env": {
        "API_KEY": {
            "generator": "secret",
            "description": "A secret that to be used to access the API."
        }
    },
    "options": {
        "allow-unauthenticated": true
    },
    "hooks": {
        "postbuild": {
            "commands": [
                "gcloud config set project $GOOGLE_CLOUD_PROJECT",
                "gcloud services enable appengine.googleapis.com",
                "gcloud services enable firestore.googleapis.com",
                "if [[ $(gcloud app describe 2>&1 || true) == *'ERROR'* ]]; then echo 'No app engine or firestore instances found, creating...' && gcloud app create --region=europe-west && gcloud firestore databases create --region=europe-west; fi",
                "echo 'Now creating service account with correct permissions..'",
                "PROJECTNUMBER=$(gcloud projects list --filter=\"$(gcloud config get-value project)\" --format=\"value(PROJECT_NUMBER)\") && gcloud projects add-iam-policy-binding $GOOGLE_CLOUD_PROJECT --member=\"serviceAccount:$PROJECTNUMBER-compute@developer.gserviceaccount.com\" --role='roles/datastore.user'",                
                "echo 'Now loading some test data..' && ./loaddata.sh"
            ]
        }
    }
}