insert_data.py

# Copyright 2025 Harikrishna Srinivasan
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.


from argon2 import PasswordHasher
from typehints import Connection, Cursor, IntegrityError, Optional, Union

"""
Adds the data to the correspoding tables.
For datas that will be added frequently,
the functions are defined here.
"""


def add_faculty_info(db_connector: Connection,
                     cursor: Cursor, /, *,
                     faculty_id: Optional[int] = None,
                     salary: Optional[float] = None,
                     password: Optional[str] = None,
                     verbose: bool = True) -> None:
    try:
        if not password:
            raise ValueError("Password is missing")

        ph = PasswordHasher()
        cursor.execute("""INSERT INTO `faculty_info`
                       VALUES (%s, %s, %s)""",
                       (faculty_id, salary, ph.hash(password)))

        db_connector.commit()
    except Exception as exception:
        _exception = exception.args
        db_connector.rollback()
        if verbose:
            if _exception[0] == 1062:
                raise IntegrityError("Faculty information already exists in """
                                     "`faculty_info` table.\n "
                                     "If you want to update the information, "
                                     "use `update_faculty_info()` function.")
            elif _exception[0] == 1452:
                raise IntegrityError("Faculty ID does not exist in "
                                     "`faculties` table.")
            else:
                raise
        raise ValueError("Faculty ID does not exist in `faculties` table "
                         "or Faculty information already exists")


def add_section_minor_elective(db_connector: Connection,
                               cursor: Cursor, /, *,
                               section_id: Optional[int] = None,
                               course_code: Optional[str] = None) -> None:
    cursor.execute("""INSERT INTO `section_minor_electives`
                   (`section_id`, `course_code`)
                   VALUES (%s, %s)""", (section_id, course_code))
    db_connector.commit()


def add_section_class(db_connector: Connection,
                      cursor: Cursor, /, *,
                      section_id: Optional[int] = None,
                      class_id: Optional[int] = None) -> None:
    cursor.execute("""INSERT INTO `section_class`
                   (`section_id`, `class_id`)
                   VALUES (%s, %s)""", (section_id, class_id))
    db_connector.commit()


def add_section_student(db_connector: Connection,
                        cursor: Cursor, /, *,
                        section_id: Optional[int] = None,
                        student_id: Optional[int] = None) -> None:
    cursor.execute("""INSERT INTO `section_students`
                   (`section_id`, `student_id`)
                   VALUES (%s, %s)""", (section_id, student_id))
    db_connector.commit()


def add_faculty_section_course(db_connector: Connection,
                               cursor: Cursor, /, *,
                               id: Optional[int] = None,
                               faculty_id: Optional[int] = None,
                               section_id: Optional[int] = None,
                               course_code: Optional[str] = None) -> None:
    cursor.execute("""INSERT INTO `faculty_section_course`
                   (`id`, `faculty_id`, `section_id`, `course_code`)
                   VALUES (%s, %s, %s, %s)""",
                   (id, faculty_id, section_id, course_code))
    db_connector.commit()


def add_student_elective(db_connector: Connection,
                         cursor: Cursor, /, *,
                         student_id: Optional[int] = None,
                         course_code: Optional[str] = None) -> None:
    cursor.execute("""INSERT INTO `student_electives`
                   (`student_id`, `course_code`)
                   VALUES (%s, %s)""", (student_id, course_code))
    db_connector.commit()


def add_period(db_connector: Connection,
               cursor: Cursor, /, *,
               id: Optional[int] = None,
               start_time: Optional[str] = None,
               end_time: Optional[str] = None,
               is_break: bool = False) -> None:
    def __add_one_hr(start):
        hr, *min = start.split(":")
        hr = (int(hr) + 1) % 24
        return str(hr) + ":" + ":".join(min)

    if not end_time:
        end_time = __add_one_hr(start_time)
    cursor.execute("""INSERT INTO `periods`
                   (`id`, `start_time`, `end_time`, `is_break`)
                   VALUES (%s, %s, %s, %s)""",
                   (id, start_time, end_time, is_break))
    db_connector.commit()


def add_timetable(db_connector: Connection,
                  cursor: Cursor, /, *,
                  day: Optional[str] = None,
                  period_id: Optional[int] = None,
                  faculty_section_course_id: Optional[int] = None,
                  class_id: Optional[int] = None) -> None:
    cursor.execute("""INSERT INTO `timetables`
                   (`day`, `period_id`,
                   `faculty_section_course_id`, `class_id`)
                   VALUES (%s, %s, %s, %s)""",
                   (day, period_id, faculty_section_course_id, class_id))
    db_connector.commit()