#!/usr/bin/python3.4
import unittest
import MySQLdb
import sqlalchemy
from sqlalchemy.engine import create_engine
from sqlalchemy.orm import sessionmaker
import wrpylib.mwdb


class TestMwDb(unittest.TestCase):
    @classmethod
    def setUpClass(cls):
        cls.engine = create_engine('mysql://philipp@localhost:3306/philipp_winterrodeln_wiki?charset=utf8mb4')
        cls.Session = sessionmaker(bind=cls.engine)

    def setUp(self):
        self.metadata = sqlalchemy.MetaData()
        self.session = self.Session()

    def tearDown(self):
        self.session.rollback()

    def test_page_table(self):
        Page = wrpylib.mwdb.page_table(self.metadata)
        page = self.session.query(Page).filter(Page.c.page_id==1321).first()
        self.assertEqual(page.page_id, 1321)
        self.assertEqual(type(page.page_title), str)
        self.assertEqual(type(page.page_restrictions), bytes)
        self.assertEqual(type(page.page_touched), str)

    def test_revision_table(self):
        Revision = wrpylib.mwdb.revision_table(self.metadata)
        revision = self.session.query(Revision).filter(Revision.c.rev_id == 666).first()
        self.assertEqual(revision.rev_id, 666)
        self.assertEqual(type(revision.rev_comment), str)
        self.assertEqual(type(revision.rev_user_text), str)
        self.assertEqual(type(revision.rev_timestamp), str)

    def test_text_table(self):
        Text = wrpylib.mwdb.text_table(self.metadata)
        text = self.session.query(Text).filter(Text.c.old_id == 51).first()
        self.assertEqual(text.old_id, 51)
        self.assertEqual(type(text.old_text), str)
        self.assertEqual(type(text.old_flags), str)
        self.assertEqual(text.old_flags, 'utf-8')


    def test_user_table(self):
        User = wrpylib.mwdb.user_table(self.metadata)
        user = self.session.query(User).filter(User.c.user_id == 1).first()
        self.assertEqual(user.user_id, 1)
        self.assertEqual(type(user.user_name), str)
        self.assertEqual(type(user.user_real_name), str)
        self.assertEqual(type(user.user_email), str)
        self.assertEqual(user.user_name, 'Philipp')


    def test_categorylinks_table(self):
        Categorylinks = wrpylib.mwdb.categorylinks_table(self.metadata)
        categorylinks = self.session.query(Categorylinks).filter(Categorylinks.c.cl_from == 609).first()
        self.assertEqual(categorylinks.cl_from, 609)
        self.assertEqual(type(categorylinks.cl_to), str)
        self.assertEqual(type(categorylinks.cl_sortkey), str)
        self.assertEqual(categorylinks.cl_sortkey, 'ALT BÄRNBAD')


class TestMySqlPython(unittest.TestCase):
    """Note: Many of those tests failed in MySQL_python version 1.2.3 and earlier
    because byte strings are returned instead of unicode for columns having
    a _bin collation, see https://sourceforge.net/p/mysql-python/bugs/289/
    This has been fixed in MySQL_python version 1.2.4."""
    @classmethod
    def setUpClass(cls):
        cls.db = MySQLdb.connect(db='philipp_winterrodeln_wiki', charset='utf8mb4')

    def setUp(self):
        self.cursor = self.db.cursor()

    def exec_sql(self, sql):
        self.cursor.execute(sql)
        row = self.cursor.fetchone()
        return row

    def test_datatype_page(self):
        result = self.exec_sql('select page_title, page_restrictions, page_touched from page where page_id = 1321')
        self.assertEqual(type(result[0]), str)  # varchar(255) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL
        self.assertEqual(type(result[1]), bytes)  # tinyblob NOT NULL
        self.assertEqual(type(result[2]), bytes)  # binary(14) NOT NULL

    def test_datatype_revision(self):
        result = self.exec_sql('select rev_comment, rev_user_text, rev_timestamp from revision where rev_id = 7586')
        self.assertEqual(type(result[0]), bytes)  # tinyblob NOT NULL
        self.assertEqual(type(result[1]), str)  # varchar(255) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL
        self.assertEqual(type(result[2]), bytes)  # binary(14) NOT NULL

    def test_datatypes_text(self):
        result = self.exec_sql('select old_text, old_flags from text where old_id = 7438')
        self.assertEqual(type(result[0]), bytes)  # mediumblob NOT NULL
        self.assertEqual(type(result[1]), bytes)  # tinyblob NOT NULL

    def test_datatype_user(self):
        result = self.exec_sql('select user_name, user_real_name, user_email from user where user_id = 1')
        self.assertEqual(type(result[0]), str)  # varchar(255) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL
        self.assertEqual(type(result[1]), str)  # varchar(255) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL
        self.assertEqual(type(result[2]), str)  # tinytext NOT NULL
        assert result[0] == 'Philipp'

    def test_datatype_categorylinks(self):
        result = self.exec_sql('select cl_to, cl_sortkey from categorylinks where cl_from = 609')
        self.assertEqual(type(result[0]), str)  # varchar(255) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL
        self.assertEqual(type(result[1]), bytes)  # varbinary(230) NOT NULL