from django.db import models
from django.utils.translation import gettext_lazy as _
from django_jsonform.models.fields import JSONField as JSONSchemaField

from vbv_lernwelt.assignment.models import AssignmentType
from vbv_lernwelt.duedate.models import DueDate


class CourseSessionAttendanceCourse(models.Model):
    """
    Präsenztag Durchührung

    Kann über einen Zeitraum von meheren Tagen gehen.
    """

    course_session = models.ForeignKey(
        "course.CourseSession",
        on_delete=models.CASCADE,
    )
    learning_content = models.ForeignKey(
        "learnpath.LearningContentAttendanceCourse",
        on_delete=models.CASCADE,
    )
    due_date = models.OneToOneField(
        "duedate.DueDate",
        on_delete=models.CASCADE,
        related_name="attendance_course_due_date",
    )

    location = models.CharField(max_length=255, blank=True, default="")
    trainer = models.CharField(max_length=255, blank=True, default="")

    # because the attendance list is more of a snapshot of the current state
    # we will store the attendance list as a JSONField
    # the important field of the list type is "user_id"
    ATTENDANCE_USER_LIST_SCHEMA = {
        "type": "array",
        "items": {
            "type": "object",
            "properties": {
                "user_id": {
                    "type": "number",
                    "required": True,
                },
                "email": {"type": "string"},
                "first_name": {"type": "string"},
                "last_name": {"type": "string"},
            },
        },
    }
    attendance_user_list = JSONSchemaField(
        default=list, schema=ATTENDANCE_USER_LIST_SCHEMA
    )

    def save(self, *args, **kwargs):
        if not self.pk:
            title = ""
            url = ""
            page = None
            if self.learning_content_id:
                title = self.learning_content.title
                page = self.learning_content.page_ptr
                url = self.learning_content.get_frontend_url()

            self.due_date = DueDate.objects.create(
                url=url,
                title=f"{title}",
                learning_content_description=f"{_('Präsenzkurs')}",
                description="",
                course_session=self.course_session,
                page=page,
            )
        super().save(*args, **kwargs)

    def __str__(self):
        return f"{self.course_session} - {self.learning_content}"


class CourseSessionAssignment(models.Model):
    """
    Auftrag
    - Geletitete Fallarbeit ist eine speziefische ausprägung eines Auftrags (assignment_type)

    """

    course_session = models.ForeignKey(
        "course.CourseSession",
        on_delete=models.CASCADE,
    )
    learning_content = models.ForeignKey(
        "learnpath.LearningContentAssignment",
        on_delete=models.CASCADE,
    )
    submission_deadline = models.OneToOneField(
        "duedate.DueDate",
        on_delete=models.CASCADE,
        related_name="assignment_submission_deadline",
        null=True,
    )

    evaluation_deadline = models.OneToOneField(
        "duedate.DueDate",
        on_delete=models.CASCADE,
        related_name="assignment_evaluation_deadline",
        null=True,
    )

    def save(self, *args, **kwargs):
        if not self.pk:
            title = ""
            url = ""
            page = None
            assignment_type_description = ""
            if self.learning_content_id:
                title = self.learning_content.title
                page = self.learning_content.page_ptr
                url = self.learning_content.get_frontend_url()
                assignment_type = self.learning_content.assignment_type
                assignment_type_descriptions = {
                    AssignmentType.CASEWORK.name: _("Geleitete Fallarbeit"),
                    AssignmentType.PREP_ASSIGNMENT.name: _("Vorbereitungsauftrag"),
                    AssignmentType.REFLECTION.name: _("Reflexion"),
                }
                assignment_type_description = assignment_type_descriptions.get(
                    assignment_type, ""
                )

            if assignment_type in {
                AssignmentType.CASEWORK.value,
                AssignmentType.PREP_ASSIGNMENT.value,
            }:  # Reflexion
                self.submission_deadline = DueDate.objects.create(
                    url=url,
                    title=f"{title}",
                    learning_content_description=assignment_type_description,
                    description=f"{_('Abgabe Termin')}",
                    course_session=self.course_session,
                    page=page,
                )

            if assignment_type == AssignmentType.CASEWORK.value:
                self.evaluation_deadline = DueDate.objects.create(
                    url=url,
                    title=f"{title}",
                    learning_content_description=assignment_type_description,
                    description=f"{_('Freigabe Termin Bewertungen')}",
                    course_session=self.course_session,
                    page=page,
                )

        super().save(*args, **kwargs)

    def __str__(self):
        return f"{self.course_session} - {self.learning_content}"


class CourseSessionEdoniqTest(models.Model):
    course_session = models.ForeignKey(
        "course.CourseSession",
        on_delete=models.CASCADE,
    )
    learning_content = models.ForeignKey(
        "learnpath.LearningContentEdoniqTest",
        on_delete=models.CASCADE,
    )
    due_date = models.OneToOneField(
        "duedate.DueDate",
        on_delete=models.CASCADE,
        related_name="edoniq_test_due_date",
    )

    def __str__(self):
        return f"{self.course_session} - {self.learning_content}"