# -*- coding: utf-8 -*-
# Copyright (C) 2016 Mirantis, Inc.
#
# Based on jenkins_jobs/modules/project_workflow.py by
# Copyright (C) 2015 David Caro <david@dcaro.es>
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.


"""
The Pipeline Project module handles creating Jenkins Pipeline projects
(formerly known as the Workflow projects).
You may specify ``pipeline`` in the ``project-type`` attribute of
the :ref:`Job` definition.

Requires the Jenkins :jenkins-wiki:`Pipeline Plugin <Pipeline+Plugin>`:

In order to write an inline script within a job-template you have to escape the
curly braces by doubling them in the DSL: { -> {{ , otherwise it will be
interpreted by the python str.format() command.

:Job Parameters:
    * **sandbox** (`bool`): If the script should run in a sandbox (default
      false)
    * **dsl** (`str`): The DSL content or,
    * **pipeline-scm** (`str`): in case "Pipeline as code" feature is used.
      Then you should specify:

        * **scm**: single ``scm`` component (or a reference) describing the
          source code repository
        * **script-path**: path to the Groovy file containing the job's steps
          (optional, default: ``Jenkinsfile``)
        * **lightweight-checkout** (`bool`): If selected, try to obtain the
          Pipeline script contents directly from the SCM without performing a
          full checkout. (optional, default: ``false``)

Note that ``dsl`` and ``pipeline-scm`` parameters are mutually exclusive.

Inline DSL job example:

    .. literalinclude::
      /../../tests/yamlparser/fixtures/project_pipeline_template001.yaml

Inline DSL job template example:

    .. literalinclude::
      /../../tests/yamlparser/fixtures/project_pipeline_template002.yaml

"Pipeline as code" example:

    .. literalinclude::
      /../../tests/yamlparser/fixtures/project_pipeline_template004.yaml

"Pipeline as code" example using templates:

    .. literalinclude::
      /../../tests/yamlparser/fixtures/project_pipeline_template005.yaml

"Pipeline as nested stage" example :

    .. literalinclude::
      /../../tests/yamlparser/fixtures/project_pipeline_template006.yaml

.. _Pipeline as code: https://jenkins.io/solutions/pipeline/

"""
import xml.etree.ElementTree as XML

from jenkins_jobs.errors import JenkinsJobsException
import jenkins_jobs.modules.base


class Pipeline(jenkins_jobs.modules.base.Base):
    sequence = 0
    error_msg = ("You cannot declare both 'dsl' and 'pipeline-scm' on a "
                 "pipeline job")

    def root_xml(self, data):
        xml_parent = XML.Element('flow-definition',
                                 {'plugin': 'workflow-job'})
        if 'dsl' in data and 'pipeline-scm' in data:
            raise JenkinsJobsException(self.error_msg)
        if 'dsl' in data:
            xml_definition = XML.SubElement(xml_parent, 'definition',
                                            {'plugin': 'workflow-cps',
                                             'class': 'org.jenkinsci.plugins.'
                                             'workflow.cps.CpsFlowDefinition'})
            XML.SubElement(xml_definition, 'script').text = data['dsl']
        elif 'pipeline-scm' in data:
            xml_definition = XML.SubElement(xml_parent, 'definition', {
                'plugin': 'workflow-cps',
                'class': 'org.jenkinsci.plugins.workflow.cps.'
                'CpsScmFlowDefinition'})
        else:
            raise JenkinsJobsException("Either 'dsl' or 'pipeline-scm' "
                                       "is required for pipeline job")

        needs_workspace = data.get('sandbox', False)
        XML.SubElement(xml_definition, 'sandbox').text = str(
            needs_workspace).lower()

        return xml_parent