129 lines
3.4 KiB
Python
Executable File
129 lines
3.4 KiB
Python
Executable File
#!/usr/bin/env python3
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# Copyright 2018 Abdulkadir Furkan Şanlı
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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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# http://www.apache.org/licenses/LICENSE-2.0
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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 sqlite3
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import time
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def connect_database(file):
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"""
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Creates and returns Connection object.
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:param file: database file
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"""
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conn = sqlite3.connect(file)
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return conn
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def get_lower_weekday():
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"""
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Returns current weekday's name as lowercase string.
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"""
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day = time.strftime("%A")
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lower_day = day.lower()
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return lower_day
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def check_id(conn, id):
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"""
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Returns True if existing ID, False if not.
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:param conn: Connection object
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:param id: ID of student, int
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"""
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cur = conn.cursor()
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cur.execute("SELECT id FROM students")
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ids = cur.fetchall()
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for x in ids:
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if id == x[0]:
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return True
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else:
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return False
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def select_final_time(conn, day, id):
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"""
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Returns ending time of final lesson student must attend, or None.
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:param conn: Connection object
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:param day: current weekday, lowercase str
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:param id: ID of student, int
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"""
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cur = conn.cursor()
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cur.execute("""
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SELECT end_time
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FROM timetable
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INNER JOIN students ON g1 = lesson_id
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OR g2 = lesson_id
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OR g3 = lesson_id
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OR g4 = lesson_id
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OR g5 = lesson_id
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OR g6 = lesson_id
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OR lesson_id = 'gu'
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OR lesson_id = 'to'
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WHERE id = ? AND day = ?
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ORDER BY end_time DESC
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LIMIT 1
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""", (id, day))
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finish = cur.fetchone()
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if str(type(finish)) == "<class 'tuple'>":
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return finish[0]
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else:
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return finish
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def parse_time_string(timestring):
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"""
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Parses given 24h time string of format "HH:MM" into time_struct.
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:param timestring: time string "HH:MM"
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"""
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timestruct = time.strptime(timestring, "%H:%M")
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return timestruct
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def main():
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db = input(
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"Please enter name of database (in same folder as program): ")
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y = "y"
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while y == "y":
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conn = connect_database(db)
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day = get_lower_weekday()
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id = int(input("Please input the student ID number: "))
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if check_id(conn, id):
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raw_time = select_final_time(conn, day, id)
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final_time = parse_time_string(
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raw_time) if raw_time != None else None
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if final_time != None:
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current_time = parse_time_string(time.strftime("%H:%M"))
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if current_time > final_time:
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print("Clear to leave.")
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else:
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print("Student does not have clearance.")
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elif final_time == None:
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print("Clear to leave.")
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else:
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print("Student does not exist in the database. Please try again.")
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y = input("Press y key followed by enter to run again.")
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if __name__ == "__main__":
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main()
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