# Copied from https://github.com/tektoncd/catalog/blob/v1beta1/git/git-clone.yaml :(
# This can be deleted after we add support to refer to the remote Task in a registry (Issue #1839) or
# add support for referencing task in git directly (issue #2298)
apiVersion: tekton.dev/v1beta1
kind: Task
metadata:
  name: git-clone-from-catalog
spec:
  workspaces:
    - name: output
      description: The git repo will be cloned onto the volume backing this workspace
  params:
    - name: url
      description: git url to clone
      type: string
    - name: revision
      description: git revision to checkout (branch, tag, sha, ref…)
      type: string
      default: master
    - name: refspec
      description: (optional) git refspec to fetch before checking out revision
      default: ""
    - name: submodules
      description: defines if the resource should initialize and fetch the submodules
      type: string
      default: "true"
    - name: depth
      description: performs a shallow clone where only the most recent commit(s) will be fetched
      type: string
      default: "1"
    - name: sslVerify
      description: defines if http.sslVerify should be set to true or false in the global git config
      type: string
      default: "true"
    - name: subdirectory
      description: subdirectory inside the "output" workspace to clone the git repo into
      type: string
      default: ""
    - name: deleteExisting
      description: clean out the contents of the repo's destination directory (if it already exists) before trying to clone the repo there
      type: string
      default: "false"
    - name: httpProxy
      description: git HTTP proxy server for non-SSL requests
      type: string
      default: ""
    - name: httpsProxy
      description: git HTTPS proxy server for SSL requests
      type: string
      default: ""
    - name: noProxy
      description: git no proxy - opt out of proxying HTTP/HTTPS requests
      type: string
      default: ""
  results:
    - name: commit
      description: The precise commit SHA that was fetched by this Task
  steps:
    - name: clone
      image: gcr.io/tekton-releases/github.com/tektoncd/pipeline/cmd/git-init:latest
      script: |
        CHECKOUT_DIR="$(workspaces.output.path)/$(params.subdirectory)"

        cleandir() {
          # Delete any existing contents of the repo directory if it exists.
          #
          # We don't just "rm -rf $CHECKOUT_DIR" because $CHECKOUT_DIR might be "/"
          # or the root of a mounted volume.
          if [[ -d "$CHECKOUT_DIR" ]] ; then
            # Delete non-hidden files and directories
            rm -rf "$CHECKOUT_DIR"/*
            # Delete files and directories starting with . but excluding ..
            rm -rf "$CHECKOUT_DIR"/.[!.]*
            # Delete files and directories starting with .. plus any other character
            rm -rf "$CHECKOUT_DIR"/..?*
          fi
        }

        if [[ "$(params.deleteExisting)" == "true" ]] ; then
          cleandir
        fi

        test -z "$(params.httpProxy)" || export HTTP_PROXY=$(params.httpProxy)
        test -z "$(params.httpsProxy)" || export HTTPS_PROXY=$(params.httpsProxy)
        test -z "$(params.noProxy)" || export NO_PROXY=$(params.noProxy)

        /ko-app/git-init \
          -url "$(params.url)" \
          -revision "$(params.revision)" \
          -refspec "$(params.refspec)" \
          -path "$CHECKOUT_DIR" \
          -sslVerify="$(params.sslVerify)" \
          -submodules="$(params.submodules)" \
          -depth "$(params.depth)"
        cd "$CHECKOUT_DIR"
        RESULT_SHA="$(git rev-parse HEAD | tr -d '\n')"
        EXIT_CODE="$?"
        if [ "$EXIT_CODE" != 0 ]
        then
          exit $EXIT_CODE
        fi
        # Make sure we don't add a trailing newline to the result!
        echo -n "$RESULT_SHA" > $(results.commit.path)

---

# Task to cleanup shared workspace
apiVersion: tekton.dev/v1beta1
kind: Task
metadata:
  name: cleanup-workspace
spec:
  workspaces:
    # Shared workspace where git repo is cloned
    - name: source
  steps:
    - name: check-application-dir-has-source
      image: ubuntu
      script: |
        if [ ! -d "$(workspaces.source.path)/application/" ]; then
          echo "Something went wrong and could not find application source under $(workspaces.source.path)/application/"
          exit 1
        fi
    - name: cleanup-workspace
      image: ubuntu
      script: |
        rm -rf $(workspaces.source.path)/application/
    - name: verify-application-dir-has-gone
      image: ubuntu
      script: |
        if [ -d "$(workspaces.source.path)/application/" ]; then
          echo "Something went wrong cleaning up and the application source still exists under $(workspaces.source.path)/application/"
          exit 1
        fi
---

# Pipeline to clone repo into shared workspace and cleanup the workspace after done
apiVersion: tekton.dev/v1beta1
kind: Pipeline
metadata:
  name: clone-cleanup-workspace
spec:
  workspaces:
    # common workspace where git repo is cloned and needs to be cleanup after done
    - name: git-source
  tasks:
    # Clone app repo to workspace
    - name: clone-app-repo
      taskRef:
        name: git-clone-from-catalog
      params:
        - name: url
          value: https://github.com/tektoncd/community.git
        - name: subdirectory
          value: application
      workspaces:
        - name: output
          workspace: git-source
  finally:
    # Cleanup workspace
    - name: cleanup
      taskRef:
        name: cleanup-workspace
      workspaces:
        - name: source
          workspace: git-source
---

# PipelineRun to execute pipeline - clone-into-workspace-and-cleanup-workspace
apiVersion: tekton.dev/v1beta1
kind: PipelineRun
metadata:
  name: write-and-cleanup-workspace
spec:
  pipelineRef:
    name: clone-cleanup-workspace
  serviceAccountName: 'default'
  workspaces:
    - name: git-source
      volumeClaimTemplate:
        spec:
          accessModes:
            - ReadWriteOnce
          resources:
            requests:
              storage: 1Gi
---