from django.shortcuts import render, redirect, get_object_or_404
from django.views.generic import DetailView
from django.contrib.admin import site
from app.models import (
    Student,
    NewsEvent,
    AcademicYear,
    Subject,
    Teacher,
    Staff,
    Course,
    Marksheet,
    SubjectMark,
)
from django.contrib.auth.decorators import login_required
from django.contrib import messages


def view_marksheet(request, pk):
    try:
        marksheet = Marksheet.objects.get(pk=pk)
        percentage = (
            (marksheet.obtained_marks / marksheet.total_marks) * 100
            if marksheet.total_marks > 0
            else 0
        )
        
        context = {
            "marksheet": marksheet,
            "percentage": percentage,
            "student": marksheet.student, 
            "school_name": "XYZ Secondary School",
            "theory_max": 80,
            "practical_max": 20,
            "exam_year": marksheet.student.academic_year,
        }
        return render(request, "Hod/view_marksheet.html", context)
    except Marksheet.DoesNotExist:
        return HttpResponse("Marksheet not found", status=404)


@login_required
def Add_Course(request):
    courses = Course.objects.all()

    context = {
        **site.each_context(request),  # This adds admin context
        "title": "Manage Courses",
        "courses": courses,
        "subtitle": "Course Management",
        "site_title": "School Management",
        "has_permission": True,
        "is_popup": False,
        "is_nav_sidebar_enabled": True,
        "available_apps": site.get_app_list(request),
    }

    if request.method == "POST":
        name = request.POST.get("name")
        level = request.POST.get("level")
        course_type = request.POST.get("course_type")
        duration = request.POST.get("duration")

        Course.objects.create(
            name=name, level=level, course_type=course_type, duration=duration
        )
        messages.success(request, "Course Added Successfully!")
        return redirect("add_course")

    return render(request, "Hod/add_course.html", context)


@login_required
def Edit_Course(request, id):
    course = Course.objects.all()
    if request.method == "POST":
        name = request.POST.get("name")
        Course.objects.filter(id=id).update(
            name=name,
        )
        messages.success(request, "Course Updated Successfully!")
        return redirect("add_course")
    context = {
        "course": course,
    }
    return render(request, "Hod/add_course.html", context)


@login_required
def Delete_Course(request, id):
    Course.objects.filter(id=id).delete()
    messages.success(request, "Course Deleted Successfully")
    return redirect("add_course")


@login_required
def dashboard(request):
    if not request.user.is_superuser:
        return redirect("studentdashboard")

    total_student = Student.objects.count()
    total_teacher = Teacher.objects.count()
    total_staff = Staff.objects.count()
    total_course = Course.objects.count()
    total_subjects = Subject.objects.count()
    context = {
        **site.each_context(request),
        "title": "Dashboard",
        # "breadcrumbs": [{"name": "Dashboard", "url": "dashboard"}],
        "total_student": total_student,
        "total_teacher": total_teacher,
        "total_staff": total_staff,
        "total_course": total_course,
        "total_subjects": total_subjects,
    }
    return render(request, "dashboard.html", context)


@login_required
def studentdashboard(request):
    total_subject = Subject.objects.count()
    student = Student.objects.get(user=request.user)
    course_name = student.course.name
    course = student.course
    total_subjects = Subject.objects.filter(course=course).count()
    subject = Subject.objects.filter(course=course)

    context = {
        **site.each_context(request),
        "title": "Student Dashboard",
        "total_subject": total_subject,
        "course_name": course_name,
        "subject": subject,
        "total_subjects": total_subjects,
    }

    return render(request, "studentdashboard.html", context)


def marksheet(request):
    marksheet = Marksheet.objects.first()
    subject = SubjectMark.objects.filter(marksheet=marksheet)
    context = {
        **site.each_context(request),
        "title": "Marksheet",
        "marksheet": marksheet,
        "subject": subject,
    }

    return render(request, "marksheet.html", context)