# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
version: 1
policy:
  pullRequests: public
tasks:
  $let:
    decision_task_id: {$eval: as_slugid("decision_task")}
    expires_in: {$fromNow: '1 year'}
    user: ${event.sender.login}

    # We define the following variable at the very top, because they are used in the
    # default definition
    head_branch:
      $if: 'tasks_for == "github-pull-request"'
      then: ${event.pull_request.head.ref}
      else:
        $if: 'tasks_for == "github-push"'
        then: ${event.ref}
        else: ${event.release.target_commitish}

    head_rev:
      $if: 'tasks_for == "github-pull-request"'
      then: ${event.pull_request.head.sha}
      else:
        $if: 'tasks_for == "github-push"'
        then: ${event.after}
        else: ${event.release.tag_name}

    repository:
      $if: 'tasks_for == "github-pull-request"'
      then: ${event.pull_request.head.repo.html_url}
      else: ${event.repository.html_url}

    scheduler_id:
      $if: 'tasks_for == "cron"'
      then: focus-nightly-sched  # TODO: Rename to mobile-nightly-sched
      else: taskcluster-github

    github_repository_full_name:
      $if: 'tasks_for == "github-pull-request"'
      then: ${event.pull_request.base.repo.full_name}
      else: ${event.repository.full_name}

    is_repo_trusted:
      # Pull requests on main repository can't be trusted because anybody can open a PR on it, without a review
      $if: 'tasks_for in ["github-push", "github-release", "cron"] && event.repository.html_url == "https://github.com/mozilla-mobile/fenix"'
      then: true
      else: false
  in:
    $let:
      decision_worker_type:
        $if: 'is_repo_trusted'
        then: mobile-3-decision
        else: mobile-1-decision
      build_worker_type:
        $if: 'is_repo_trusted'
        then: mobile-3-b-fenix
        else: mobile-1-b-fenix

      track:
        $if: 'is_repo_trusted'
        then: 'nightly'
        else: 'staging-nightly'

      # TODO: revisit once bug 1533314 is done to possibly infer better priorities
      tasks_priority: highest

      short_head_branch:
        $if: 'head_branch[:10] == "refs/tags/"'
        then: {$eval: 'head_branch[10:]'}
        else:
          $if: 'head_branch[:11] == "refs/heads/"'
          then: {$eval: 'head_branch[11:]'}
          else: ${head_branch}

      assume_scope_prefix: assume:repo:github.com/${github_repository_full_name}
    in:
      $let:
        default_task_definition:
          taskId: ${decision_task_id}
          taskGroupId: ${decision_task_id}  # Must be explicit because of Chain of Trust
          schedulerId: ${scheduler_id}
          created: {$fromNow: ''}
          deadline: {$fromNow: '2 hours'}
          expires: ${expires_in}
          provisionerId: aws-provisioner-v1
          workerType: ${decision_worker_type}
          priority: ${tasks_priority}
          requires: all-completed   # Must be explicit because of Chain of Trust
          retries: 5
          routes:
            - statuses  # Automatically added by taskcluster-github. It must be explicit because of Chain of Trust
          payload:
            maxRunTime: 600   # Decision should remain fast enough to schedule a handful of tasks
            image: mozillamobile/fenix:1.3
            command:
              - /bin/bash
              - --login
              - -cx
              # The rest of the command must be defined below
            env:
              TASK_ID: ${decision_task_id}
              TASKS_PRIORITY: ${tasks_priority}
              SCHEDULER_ID: ${scheduler_id}
              BUILD_WORKER_TYPE: ${build_worker_type}
              MOBILE_HEAD_REPOSITORY: ${repository}
              MOBILE_HEAD_BRANCH: ${head_branch}
              MOBILE_HEAD_REV: ${head_rev}
            features:
              taskclusterProxy: true
          extra:
            tasks_for: ${tasks_for}
          metadata:
            owner: ${user}@users.noreply.github.com
            source: ${repository}/raw/${head_rev}/.taskcluster.yml
      in:
        - $if: 'tasks_for == "cron"'
          then:
            $mergeDeep:
              - {$eval: 'default_task_definition'}
              - scopes:
                  - $if: is_repo_trusted
                    then: assume:hook-id:project-mobile/fenix-nightly
                    else: assume:hook-id:project-mobile/fenix-nightly-staging
                routes:
                  - notify.email.fenix-eng-notifications@mozilla.com.on-failed
                payload:
                  features:
                    taskclusterProxy: true
                    chainOfTrust: true
                  env:
                    MOBILE_TRIGGERED_BY: ${user}
                  command:
                    - >-
                      git fetch ${repository} ${head_branch}
                      && git config advice.detachedHead false
                      && git checkout ${head_rev}
                      && python automation/taskcluster/decision_task_nightly.py \
                        --track ${track} \
                        --commit \
                        --output /opt/fenix/app/build/outputs/apk \
                        --apk armGreenfield/release/app-arm-greenfield-release-unsigned.apk \
                        --apk x86Greenfield/release/app-x86-greenfield-release-unsigned.apk \
                        --apk aarch64Greenfield/release/app-aarch64-greenfield-release-unsigned.apk \
                        --date ${now}
                  artifacts:
                    public/task-graph.json:
                      type: file
                      path: /opt/fenix/task-graph.json
                      expires: ${expires_in}
                    public/actions.json:
                      type: file
                      path: /opt/fenix/actions.json
                      expires: ${expires_in}
                    public/parameters.yml:
                      type: file
                      path: /opt/fenix/parameters.yml
                      expires: ${expires_in}
                extra:
                  cron: {$json: {$eval: 'cron'}}
                metadata:
                  name: Fenix Nightly Decision Task
                  description: Decision task scheduled by cron task [${cron.task_id}](https://tools.taskcluster.net/tasks/${cron.task_id})