# Author: Nic Wolfe <nic@wolfeden.ca>
# URL: http://code.google.com/p/sickbeard/
#
# This file is part of SickRage.
#
# SickRage is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# SickRage is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#  GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with SickRage.  If not, see <http://www.gnu.org/licenses/>.

from sickbeard import db

# Add new migrations at the bottom of the list; subclass the previous migration.
class InitialSchema(db.SchemaUpgrade):
    def test(self):
        return self.hasTable("db_version")

    def execute(self):
        queries = [
            ("CREATE TABLE lastUpdate (provider TEXT, time NUMERIC);",),
            ("CREATE TABLE lastSearch (provider TEXT, time NUMERIC);",),
            ("CREATE TABLE scene_exceptions (exception_id INTEGER PRIMARY KEY, indexer_id INTEGER KEY, show_name TEXT, season NUMERIC DEFAULT -1, custom NUMERIC DEFAULT 0);",),
            ("CREATE TABLE scene_names (indexer_id INTEGER, name TEXT);",),
            ("CREATE TABLE network_timezones (network_name TEXT PRIMARY KEY, timezone TEXT);",),
            ("CREATE TABLE scene_exceptions_refresh (list TEXT PRIMARY KEY, last_refreshed INTEGER);",),
            ("CREATE TABLE db_version (db_version INTEGER);",),
            ("INSERT INTO db_version(db_version) VALUES (1);",),
        ]
        for query in queries:
            if len(query) == 1:
                self.connection.action(query[0])
            else:
                self.connection.action(query[0], query[1:])


class AddSceneExceptions(InitialSchema):
    def test(self):
        return self.hasTable("scene_exceptions")

    def execute(self):
        self.connection.action(
            "CREATE TABLE scene_exceptions (exception_id INTEGER PRIMARY KEY, indexer_id INTEGER KEY, show_name TEXT);")

class AddSceneNameCache(AddSceneExceptions):
    def test(self):
        return self.hasTable("scene_names")

    def execute(self):
        self.connection.action("CREATE TABLE scene_names (indexer_id INTEGER, name TEXT);")


class AddNetworkTimezones(AddSceneNameCache):
    def test(self):
        return self.hasTable("network_timezones")

    def execute(self):
        self.connection.action("CREATE TABLE network_timezones (network_name TEXT PRIMARY KEY, timezone TEXT);")

class AddLastSearch(AddNetworkTimezones):
    def test(self):
        return self.hasTable("lastSearch")

    def execute(self):
        self.connection.action("CREATE TABLE lastSearch (provider TEXT, time NUMERIC);")

class AddSceneExceptionsSeasons(AddLastSearch):
    def test(self):
        return self.hasColumn("scene_exceptions", "season")

    def execute(self):
        self.addColumn("scene_exceptions", "season", "NUMERIC", -1)

class AddSceneExceptionsCustom(AddSceneExceptionsSeasons):
    def test(self):
        return self.hasColumn("scene_exceptions", "custom")

    def execute(self):
        self.addColumn("scene_exceptions", "custom", "NUMERIC", 0)

class AddSceneExceptionsRefresh(AddSceneExceptionsCustom):
    def test(self):
        return self.hasTable("scene_exceptions_refresh")

    def execute(self):
        self.connection.action(
            "CREATE TABLE scene_exceptions_refresh (list TEXT PRIMARY KEY, last_refreshed INTEGER);")
