# 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/.

import datetime
import random

from nose.plugins.attrib import attr
from nose.tools import eq_

from crontabber.app import CronTabber
from socorro.lib.datetimeutil import utc_now
from socorro.unittest.cron.jobs.base import IntegrationTestBase

from socorro.unittest.cron.setup_configman import (
    get_config_manager_for_crontabber,
)

SQL_INSERT = """
INSERT INTO
    reports_clean
    (signature_id, date_processed, uuid, release_channel, reason_id,
     process_type, os_version_id, os_name, flash_version_id, domain_id,
     address_id)
VALUES
    ('{signature}', '{date}'::timestamp without time zone, '{uuid}', 'Beta',
     245, 'Browser', 71, 'Windows', 215, 631719, 11427500)
"""


@attr(integration='postgres')  # for nosetests
class TestSuspiciousCrashAnalysisIntegration(IntegrationTestBase):

    def setUp(self):
        super(TestSuspiciousCrashAnalysisIntegration, self).setUp()
        cursor = self.conn.cursor()
        # remember.. since the job can only get yesterday's data in full,
        # the now is always yesterday.
        now = utc_now() - datetime.timedelta(1)
        current = now - datetime.timedelta(15)

        cursor.execute("""
            INSERT INTO signatures (signature) VALUES ('sig')
        """)

        self.conn.commit()
        cursor = self.conn.cursor()

        cursor.execute("""
            SELECT signature_id FROM signatures WHERE signature='sig'
        """)

        for sig_id in cursor:
            sig_id = sig_id[0]
            break

        # we want to generate 10 crashes for each day, +/- 1 crashes.
        uuid = 1
        while current < now:
            for i in xrange(random.randint(9, 11)):
                sql = SQL_INSERT.format(uuid=uuid,
                                        signature=sig_id,
                                        date=current.strftime('%Y-%m-%d'))
                cursor.execute(sql)
                uuid += 1

            current += datetime.timedelta(1)

        # today we want to generate some more crashes so we have an explosive
        # crash.
        for i in xrange(30):
            sql = SQL_INSERT.format(uuid=uuid,
                                    signature=sig_id,
                                    date=now.strftime('%Y-%m-%d'))
            cursor.execute(sql)
            uuid += 1

        self.conn.commit()

    def tearDown(self):
        self.conn.cursor().execute("""
            TRUNCATE reports_clean, suspicious_crash_signatures,
            signatures
            CASCADE
        """)
        self.conn.commit()
        super(TestSuspiciousCrashAnalysisIntegration, self).tearDown()

    def _setup_config_manager(self, **kwargs):
        kwargs.setdefault('training_data_length', 10)
        kwargs.setdefault('data_bin_length', 10)
        kwargs.setdefault('model', 'SlopeBased')

        # This is the one we modified
        kwargs.setdefault('min_count', 5)

        evs = {}
        for k, v in kwargs.iteritems():
            evs['crontabber.class-SuspiciousCrashesApp.' + k] = v

        return get_config_manager_for_crontabber(
            jobs='socorro.cron.jobs.suspicious_crashes'
                '.SuspiciousCrashesApp|1d',
            overrides=evs
        )

    def test_run(self):
        config_manager = self._setup_config_manager()
        with config_manager.context() as config:
            tab = CronTabber(config)
            tab.run_all()

            information = self._load_structure()
            assert information['suspicious-crashes']
            assert not information['suspicious-crashes']['last_error']
            assert information['suspicious-crashes']['last_success']

            cursor = self.conn.cursor()

            cursor.execute("""
                SELECT signatures.signature, scs.report_date
                FROM suspicious_crash_signatures scs
                JOIN signatures ON scs.signature_id=signatures.signature_id
            """)

            count = 0
            today = (utc_now() - datetime.timedelta(1)).date()
            for row in cursor.fetchall():
                eq_('sig', row[0])
                eq_(today, row[1].date())
                count += 1

            eq_(1, count)
