94 lines
2.7 KiB
Python
94 lines
2.7 KiB
Python
#! /usr/bin/env python
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# Copyright (c) 2017, Thierry Carrez
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import json
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import os
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import datetime
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class PTGDataBase():
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BASE = {'tracks': [], 'now': {}, 'next': {}, 'colors': {},
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'location': {}}
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def __init__(self, filename):
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self.filename = filename
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if os.path.isfile(filename):
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with open(filename, 'r') as fp:
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self.data = json.load(fp)
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else:
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self.data = self.BASE
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self.save()
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def add_now(self, track, session):
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self.data['now'][track] = session
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if track in self.data['next']:
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del self.data['next'][track]
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self.save()
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def add_color(self, track, color):
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self.data['colors'][track] = color
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self.save()
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def add_location(self, track, location):
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if 'location' not in self.data:
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self.data['location'] = {}
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self.data['location'][track] = location
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self.save()
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def add_next(self, track, session):
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if track not in self.data['next']:
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self.data['next'][track] = []
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self.data['next'][track].append(session)
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self.save()
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def is_track_valid(self, track):
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return track in self.data['tracks']
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def list_tracks(self):
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return sorted(self.data['tracks'])
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def add_tracks(self, tracks):
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for track in tracks:
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if track not in self.data['tracks']:
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self.data['tracks'].append(track)
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self.save()
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def del_tracks(self, tracks):
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for track in tracks:
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if track in self.data['tracks']:
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self.data['tracks'].remove(track)
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self.save()
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def clean_tracks(self, tracks):
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for track in tracks:
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if track in self.data['now']:
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del self.data['now'][track]
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if track in self.data['next']:
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del self.data['next'][track]
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self.save()
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def wipe(self):
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self.data = self.BASE
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self.save()
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def save(self):
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timestamp = datetime.datetime.now()
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self.data['timestamp'] = '{:%Y-%m-%d %H:%M:%S}'.format(timestamp)
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self.data['tracks'] = sorted(self.data['tracks'])
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with open(self.filename, 'w') as fp:
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json.dump(self.data, fp)
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