import makeArvadosRequest from 'make-arvados-request';
import wbUuidsToCwl from 'wb-uuids-to-cwl';

function wbParseWorkflowInputs(workflowDefinition, userInputs, errors) {
  // first see if all inputs are parseable
  const inputs = {};

  const main = workflowDefinition['$graph'].find(a => (a.id === '#main'));

  for (let k in userInputs) {
    try {
      let val = jsyaml.safeLoad(userInputs[k]);
      val = wbUuidsToCwl(val);
      k = k.split('/').slice(1).join('/');
      inputs[k] = (val === undefined ? null : val);
    } catch (exc) {
      errors.push('Error parsing ' + k + ': ' + exc.message);
    }
  }

  return inputs;
}

// params:
//   arvHost, arvToken, inputs,
//   projectUuid, workflowDefinition, workflowUuid
//   processName, processDescription
function wbSubmitContainerRequest(params) {

  const { workflowDefinition, workflowUuid,
    processName, processDescription, inputs,
    arvHost, arvToken, projectUuid } = params;

  // prepare a request
  const req = {
    name: processName,
    description: processDescription,
    owner_uuid: projectUuid,
    container_image: 'arvados/jobs',
    properties: {
      template_uuid: workflowUuid
    },
    runtime_constraints: {
      API: true,
      vcpus: 1,
      ram: 1073741824
    },
    cwd: '/var/spool/cwl',
    command: [
      'arvados-cwl-runner',
      '--local',
      '--api=containers',
      '--project-uuid=' + projectUuid,
      '--collection-cache-size=256',
      '/var/lib/cwl/workflow.json#main',
      '/var/lib/cwl/cwl.input.json'],
    output_path: '/var/spool/cwl',
    priority: 1,
    state: 'Committed',
    mounts: {
      'stdout': {
        kind: 'file',
        path: '/var/spool/cwl/cwl.output.json'
      },
      '/var/spool/cwl': {
        kind: 'collection',
        writable: true
      },
      '/var/lib/cwl/workflow.json': {
        kind: 'json',
        content: workflowDefinition
      },
      '/var/lib/cwl/cwl.input.json': {
        kind: 'json',
        content: inputs
      }
    }
  };

  const prom = makeArvadosRequest(arvHost, arvToken,
    '/arvados/v1/container_requests',
    { method: 'POST', data: JSON.stringify(req) });

  return prom;
}

export { wbParseWorkflowInputs, wbSubmitContainerRequest };