from typing import Type
from factory.django import DjangoModelFactory
from factory import SubFactory, LazyAttribute, Iterator
from faker import Faker

from course.models import (
    Program,
    Course,
    CourseAllocation,
    Upload,
    UploadVideo,
    CourseOffer,
    SEMESTER,
)
from accounts.models import User, DepartmentHead
from core.models import Session

from .generate_fake_accounts_data import UserFactory, ProgramFactory
from .generate_fake_core_data import SessionFactory

fake = Faker()


class DepartmentHeadFactory(DjangoModelFactory):
    class Meta:
        model = DepartmentHead

    user = SubFactory(UserFactory)
    department = SubFactory(ProgramFactory)


class ProgramFactory(DjangoModelFactory):
    """
    Factory for creating Program instances.

    Attributes:
        title (str): The generated title for the program.
        summary (str): The generated summary for the program.
    """

    class Meta:
        model = Program

    title: str = LazyAttribute(lambda x: fake.sentence(nb_words=3))
    summary: str = LazyAttribute(lambda x: fake.paragraph())


class CourseFactory(DjangoModelFactory):
    """
    Factory for creating Course instances.

    Attributes:
        slug (str): The generated slug for the course.
        title (str): The generated title for the course.
        code (str): The generated code for the course.
        credit (int): The generated credit for the course.
        summary (str): The generated summary for the course.
        program (Program): The associated program for the course.
        level (str): The generated level for the course.
        year (int): The generated year for the course.
        semester (str): The generated semester for the course.
        is_elective (bool): The flag indicating if the course is elective.
    """

    class Meta:
        model = Course

    slug: str = LazyAttribute(lambda x: fake.slug())
    title: str = LazyAttribute(lambda x: fake.sentence(nb_words=4))
    code: str = LazyAttribute(lambda x: fake.unique.word())
    credit: int = LazyAttribute(lambda x: fake.random_int(min=1, max=6))
    summary: str = LazyAttribute(lambda x: fake.paragraph())
    program: Type[Program] = SubFactory(ProgramFactory)
    level: str = Iterator(["Beginner", "Intermediate", "Advanced"])
    year: int = LazyAttribute(lambda x: fake.random_int(min=1, max=4))
    semester: str = Iterator([choice[0] for choice in SEMESTER])
    is_elective: bool = LazyAttribute(lambda x: fake.boolean())


class CourseAllocationFactory(DjangoModelFactory):
    """
    Factory for creating CourseAllocation instances.

    Attributes:
        lecturer (User): The associated lecturer for the course allocation.
        session (Session): The associated session for the course allocation.
    """

    class Meta:
        model = CourseAllocation

    lecturer: Type[User] = SubFactory(UserFactory, is_lecturer=True)
    session: Type[Session] = SubFactory(SessionFactory)


class UploadFactory(DjangoModelFactory):
    """
    Factory for creating Upload instances.

    Attributes:
        title (str): The generated title for the upload.
        course (Course): The associated course for the upload.
        file (str): The generated file path for the upload.
        updated_date (datetime): The generated updated date for the upload.
        upload_time (datetime): The generated upload time for the upload.
    """

    class Meta:
        model = Upload

    title: str = LazyAttribute(lambda x: fake.sentence(nb_words=3))
    course = SubFactory(CourseFactory)  # Adjust 'yourapp' with your actual app name
    file: str = LazyAttribute(lambda x: fake.file_path(extension="pdf"))
    updated_date = fake.date_time_this_year()
    upload_time = fake.date_time_this_year()


class UploadVideoFactory(DjangoModelFactory):
    """
    Factory for creating UploadVideo instances.

    Attributes:
        title (str): The generated title for the video upload.
        slug (str): The generated slug for the video upload.
        course (Course): The associated course for the video upload.
        video (str): The generated video path for the video upload.
        summary (str): The generated summary for the video upload.
        timestamp (datetime): The generated timestamp for the video upload.
    """

    class Meta:
        model = UploadVideo

    title: str = LazyAttribute(lambda x: fake.sentence(nb_words=3))
    slug: str = LazyAttribute(lambda x: fake.slug())
    course = SubFactory(CourseFactory)  # Adjust 'yourapp' with your actual app name
    video: str = LazyAttribute(lambda x: fake.file_path(extension="mp4"))
    summary: str = LazyAttribute(lambda x: fake.paragraph())
    timestamp = fake.date_time_this_year()


class CourseOfferFactory(DjangoModelFactory):
    """
    Factory for creating CourseOffer instances.

    Attributes:
        dep_head (DepartmentHead): The associated department head for the course offer.
    """

    class Meta:
        model = CourseOffer

    dep_head = SubFactory(DepartmentHeadFactory)


def generate_fake_course_data(
    num_programs: int,
    num_courses: int,
    num_course_allocations: int,
    num_uploads: int,
    num_upload_videos: int,
    num_course_offers: int,
) -> None:
    """Generate fake data using various factories.

    Args:
        num_programs (int): Number of fake programs to create.
        num_courses (int): Number of fake courses to create.
        num_course_allocations (int): Number of fake course allocations to create.
        num_uploads (int): Number of fake uploads to create.
        num_upload_videos (int): Number of fake upload videos to create.
        num_course_offers (int): Number of fake course offers to create.
    """
    # Generate fake programs
    programs = ProgramFactory.create_batch(num_programs)
    print(f"Created {len(programs)} programs.")

    # Generate fake courses
    courses = CourseFactory.create_batch(num_courses)
    print(f"Created {len(courses)} courses.")

    # Generate fake course allocations
    course_allocations = CourseAllocationFactory.create_batch(num_course_allocations)
    print(f"Created {len(course_allocations)} course allocations.")

    # Generate fake uploads
    uploads = UploadFactory.create_batch(num_uploads)
    print(f"Created {len(uploads)} uploads.")

    # Generate fake upload videos
    upload_videos = UploadVideoFactory.create_batch(num_upload_videos)
    print(f"Created {len(upload_videos)} upload videos.")

    # Generate fake course offers
    course_offers = CourseOfferFactory.create_batch(num_course_offers)
    print(f"Created {len(course_offers)} course offers.")


generate_fake_course_data(10, 10, 10, 10, 10, 10)