import json
import unittest

from sqlalchemy import func

from crc import db
from crc.models import StudyModel, StudySchema, WorkflowSpecModel, WorkflowSpecSchema, WorkflowModel, WorkflowStatus, \
    WorkflowSchema, TaskSchema
from crc.workflow_processor import WorkflowProcessor
from tests.base_test import BaseTest


class TestStudy(BaseTest, unittest.TestCase):

    def test_study_basics(self):
        self.load_example_data()
        study = db.session.query(StudyModel).first()
        self.assertIsNotNone(study)

    def test_study_api_get_single_study(self):
        self.load_example_data()
        study = db.session.query(StudyModel).first()
        rv = self.app.get('/v1.0/study/%i' % study.id,
                          follow_redirects=True,
                          content_type="application/json")
        self.assert_success(rv)
        json_data = json.loads(rv.get_data(as_text=True))
        study2 = StudySchema().load(json_data, session=db.session)
        self.assertEqual(study, study2)
        self.assertEqual(study.id, study2.id)
        self.assertEqual(study.title, study2.title)
        self.assertEqual(study.last_updated, study2.last_updated)
        self.assertEqual(study.protocol_builder_status, study2.protocol_builder_status)
        self.assertEqual(study.primary_investigator_id, study2.primary_investigator_id)
        self.assertEqual(study.sponsor, study2.sponsor)
        self.assertEqual(study.ind_number, study2.ind_number)

    def test_list_workflow_specifications(self):
        self.load_example_data()
        spec = db.session.query(WorkflowSpecModel).first()
        rv = self.app.get('/v1.0/workflow-specification',
                          follow_redirects=True,
                          content_type="application/json")
        self.assert_success(rv)
        json_data = json.loads(rv.get_data(as_text=True))
        specs = WorkflowSpecSchema(many=True).load(json_data, session=db.session)
        spec2 = specs[0]
        self.assertEqual(spec.id, spec2.id)
        self.assertEqual(spec.display_name, spec2.display_name)
        self.assertEqual(spec.description, spec2.description)

    def test_add_workflow_to_study(self):
        self.load_example_data()
        study = db.session.query(StudyModel).first()
        self.assertEqual(0, db.session.query(WorkflowModel).count())
        spec = db.session.query(WorkflowSpecModel).first()
        rv = self.app.post('/v1.0/study/%i/workflows' % study.id,content_type="application/json",
                           data=json.dumps(WorkflowSpecSchema().dump(spec)))
        self.assert_success(rv)
        self.assertEqual(1, db.session.query(WorkflowModel).count())
        workflow = db.session.query(WorkflowModel).first()
        self.assertEqual(study.id, workflow.study_id)
        self.assertEqual(WorkflowStatus.user_input_required, workflow.status)
        self.assertIsNotNone(workflow.bpmn_workflow_json)
        self.assertEqual(spec.id, workflow.workflow_spec_id)

        json_data = json.loads(rv.get_data(as_text=True))
        workflows = WorkflowSchema(many=True).load(json_data, session=db.session)
        self.assertEqual(workflows[0].id, workflow.id)

    def test_delete_workflow(self):
        self.load_example_data()
        study = db.session.query(StudyModel).first()
        spec = db.session.query(WorkflowSpecModel).first()
        rv = self.app.post('/v1.0/study/%i/workflows' % study.id,content_type="application/json",
                           data=json.dumps(WorkflowSpecSchema().dump(spec)))
        self.assertEqual(1, db.session.query(WorkflowModel).count())
        json_data = json.loads(rv.get_data(as_text=True))
        workflow = WorkflowSchema().load(json_data, session=db.session)
        rv = self.app.delete('/v1.0/workflow/%i' % workflow.id)
        self.assert_success(rv)
        self.assertEqual(0, db.session.query(WorkflowModel).count())


    def test_get_current_user_tasks(self):
        self.load_example_data()
        study = db.session.query(StudyModel).first()
        spec = db.session.query(WorkflowSpecModel).filter_by(id='random_fact').first()
        self.app.post('/v1.0/study/%i/workflows' % study.id, content_type="application/json",
                      data=json.dumps(WorkflowSpecSchema().dump(spec)))
        rv = self.app.get('/v1.0/workflow/%i/tasks' % study.id, content_type="application/json")
        self.assert_success(rv)
        json_data = json.loads(rv.get_data(as_text=True))
        tasks = TaskSchema(many=True).load(json_data)
        self.assertEqual("Task_User_Select_Type", tasks[0].name)
        self.assertEqual(3, len(tasks[0].form["fields"][0]["options"]))