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#  Copyright 2020 Google LLC
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#  you may not use this file except in compliance with the License.
#  You may obtain a copy of the License at
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'''
--------------------------------------------------------------

Before running this Airflow module...

  Install StarThinker in cloud composer ( recommended ):

    From Release: pip install starthinker
    From Open Source: pip install git+https://github.com/google/starthinker

  Or push local code to the cloud composer plugins directory ( if pushing local code changes ):

    source install/deploy.sh
    4) Composer Menu
    l) Install All

--------------------------------------------------------------

  If any recipe task has "auth" set to "user" add user credentials:

    1. Ensure an RECIPE['setup']['auth']['user'] = [User Credentials JSON]

  OR

    1. Visit Airflow UI > Admin > Connections.
    2. Add an Entry called "starthinker_user", fill in the following fields. Last step paste JSON from authentication.
      - Conn Type: Google Cloud Platform
      - Project: Get from https://github.com/google/starthinker/blob/master/tutorials/cloud_project.md
      - Keyfile JSON: Get from: https://github.com/google/starthinker/blob/master/tutorials/deploy_commandline.md#optional-setup-user-credentials

--------------------------------------------------------------

  If any recipe task has "auth" set to "service" add service credentials:

    1. Ensure an RECIPE['setup']['auth']['service'] = [Service Credentials JSON]

  OR

    1. Visit Airflow UI > Admin > Connections.
    2. Add an Entry called "starthinker_service", fill in the following fields. Last step paste JSON from authentication.
      - Conn Type: Google Cloud Platform
      - Project: Get from https://github.com/google/starthinker/blob/master/tutorials/cloud_project.md
      - Keyfile JSON: Get from: https://github.com/google/starthinker/blob/master/tutorials/cloud_service.md

--------------------------------------------------------------

Sheet Copy

Copy tab from a sheet to a sheet.

  - Provide the full edit URL for both sheets.
  - Provide the tab name for both sheets.
  - The tab will only be copied if it does not already exist.

--------------------------------------------------------------

This StarThinker DAG can be extended with any additional tasks from the following sources:
  - https://google.github.io/starthinker/
  - https://github.com/google/starthinker/tree/master/dags

'''

from starthinker.airflow.factory import DAG_Factory

INPUTS = {
  'auth_read': 'user',  # Credentials used for reading data.
  'from_sheet': '',
  'from_tab': '',
  'to_sheet': '',
  'to_tab': '',
}

RECIPE = {
  'tasks': [
    {
      'sheets': {
        'auth': {
          'field': {
            'name': 'auth_read',
            'kind': 'authentication',
            'order': 1,
            'default': 'user',
            'description': 'Credentials used for reading data.'
          }
        },
        'template': {
          'sheet': {
            'field': {
              'name': 'from_sheet',
              'kind': 'string',
              'order': 1,
              'default': ''
            }
          },
          'tab': {
            'field': {
              'name': 'from_tab',
              'kind': 'string',
              'order': 2,
              'default': ''
            }
          }
        },
        'sheet': {
          'field': {
            'name': 'to_sheet',
            'kind': 'string',
            'order': 3,
            'default': ''
          }
        },
        'tab': {
          'field': {
            'name': 'to_tab',
            'kind': 'string',
            'order': 4,
            'default': ''
          }
        }
      }
    }
  ]
}

dag_maker = DAG_Factory('sheets_copy', RECIPE, INPUTS)
dag = dag_maker.generate()

if __name__ == "__main__":
  dag_maker.print_commandline()
