apiVersion: tekton.dev/v1beta1
kind: StepAction
metadata:
  name: cache-fetch
  annotations:
    tekton.dev/pipelines.minVersion: "0.56.0"
    tekton.dev/tags: "cache"
spec:
  params:
    - name: PATTERNS
      description: |
        Regular expression to select files to include to compute the hash.
        For example, in the case of a Go project, you can use `go.mod` for this, so the value would be "**/go.sum" (to work with possible sub go modules as well).
      type: array
    - name: SOURCE
      description: |
        The source from where the cache should be fetched. It's a URI with the scheme defining the "provider". In addition, one can add a {{hash}} variable to use the computed hash in the reference (oci image tags, path in s3, …)
        Currently supported:
        - oci:// (e.g. oci://quay.io/vdemeester/go-cache:{{hash}}
        - s3:// (e.g. s3://
      type: string
    - name: CACHE_PATH
      description: |
        Path where to extract the cache content.
        It can refer any folder, backed by a workspace or a volume, or nothing.
      type: string
    - name: WORKING_DIR
      description: |
        The working dir from where the files patterns needs to be taken
      type: string
    - name: INSECURE
      description: |
        Whether to use insecure mode for fetching the cache
      type: string
      default: "false"
    - name: DOCKER_CONFIG
      description: |
        The path to find the docker config. If left empty, it is ignored.
        If already using service account based docker secret, then this isn't required.
      type: string
      default: ""
    - name: GOOGLE_APPLICATION_CREDENTIALS
      description: |
        The path where to find the google credentials. If left empty, it is ignored.
      type: string
      default: ""
    - name: AWS_CONFIG_FILE
      description: |
        The path to the aws config file. If left empty, it is ignored.
      type: string
      default: ""
    - name: AWS_SHARED_CREDENTIALS_FILE
      description: |
        The path to find the aws credentials file. If left empty, it is ignored.
      type: string
      default: ""
    - name: BLOB_QUERY_PARAMS
      description: |
        Blob Query Params to support configure s3, gcs and azure. This is optional unless some additional features of storage providers are required like s3 acceleration, fips, pathstyle,etc
      type: string
      default: ""
  results: # Any result to "publish" ?
    - name: fetched
      description: |
        Whether a cache was fetched or not (true/false). This step won't fail if it didn't manage to fetch cache. This results allows the next step to act whether something was fetched or not.
  env:
    - name: PARAM_SOURCE
      value: $(params.SOURCE)
    - name: PARAM_CACHE_PATH
      value: $(params.CACHE_PATH)
    - name: PARAM_WORKING_DIR
      value: $(params.WORKING_DIR)
    - name: PARAM_INSECURE
      value: $(params.INSECURE)
    - name: DOCKER_CONFIG
      value: $(params.DOCKER_CONFIG)
    - name: GOOGLE_APPLICATION_CREDENTIALS
      value: $(params.GOOGLE_APPLICATION_CREDENTIALS)
    - name: AWS_CONFIG_FILE
      value: $(params.AWS_CONFIG_FILE)
    - name: AWS_SHARED_CREDENTIALS_FILE
      value: $(params.AWS_SHARED_CREDENTIALS_FILE)
    - name: BLOB_QUERY_PARAMS
      value: $(params.BLOB_QUERY_PARAMS)
  image: quay.io/openshift-pipeline/pipelines-cache-rhel9:next
  args: ["$(params.PATTERNS[*])"]
  script: |
    #!/bin/sh
    PATTERN_FLAGS=""
    echo "Patterns: $*"
    for p in $*; do
      PATTERN_FLAGS="${PATTERN_FLAGS} --pattern ${p}"
    done

    if [[ -n $DOCKER_CONFIG ]]; then
      echo "Setting DOCKER_CONFIG $DOCKER_CONFIG"
      # if config.json exists at workspace root, we use that
        if test -f "${DOCKER_CONFIG}/config.json"; then
          export DOCKER_CONFIG="${DOCKER_CONFIG}"    
        # else we look for .dockerconfigjson at the root
        elif test -f "${DOCKER_CONFIG}/.dockerconfigjson"; then
          # ensure .docker exist before the copying the content
          if [ ! -d "$HOME/.docker" ]; then
            mkdir -p "$HOME/.docker"
          fi
          cp "${DOCKER_CONFIG}/.dockerconfigjson" "$HOME/.docker/config.json"
          export DOCKER_CONFIG="$HOME/.docker"    
        else
          # need to error out if neither files are present
          echo "neither 'config.json' nor '.dockerconfigjson' found at $DOCKER_CONFIG"
          exit 1
        fi
     fi    

    /ko-app/cache fetch ${PATTERN_FLAGS} \
                        --source ${PARAM_SOURCE} \
                        --folder ${PARAM_CACHE_PATH} \
                        --insecure ${PARAM_INSECURE} \
                        --workingdir ${PARAM_WORKING_DIR}
    if [ $? -eq 0 ]; then
      echo -n true > $(step.results.fetched.path)
    else
      echo -n false > $(step.results.fetched.path)
    fi