from django import forms
from django.db.models.query import QuerySet
from django.http import HttpRequest
from django.contrib import admin, messages
from django.utils.safestring import SafeText

from import_export import fields
from import_export.admin import ImportMixin
from import_export.resources import ModelResource
from import_export.widgets import CharWidget

from django_admin_action_forms import AdminActionFormsMixin, AdminActionForm, action_with_form

from ..models.courses import Course
from ..models.students import Student

from ..custom.colortag import course_color

# Resource Class for Student data import
class StudentResource(ModelResource):
    surname = fields.Field(attribute="surname", column_name="surname")
    name = fields.Field(attribute="name", column_name="name")
    email = fields.Field(attribute="email", column_name="email")
    phone = fields.Field(attribute="phone", column_name="phone")

    # Cleanup fields before entering
    def before_import_row(self, row: dict[str, str], **kwargs) -> None:
        row["name"] = SafeText(row["name"].capitalize().strip())
        row["surname"] = SafeText(row["surname"].capitalize().strip())
        row["phone"] = SafeText(row["phone"].replace(" ",""))
        row["email"] = SafeText(row["email"].lower().strip())
        return super().before_import_row(row, **kwargs)

    class Meta:
        model = Student
        skip_unchanged = True
        report_skipped = True
        fields = ("surname", "name", "email", "phone")
        import_id_fields = ("email", "phone")

# Form Class for Student course change
class ChangeCourseForm(AdminActionForm):
    course = forms.ModelChoiceField(queryset=Course.objects.all())

class StudentAdmin(ImportMixin, AdminActionFormsMixin, admin.ModelAdmin):
    list_display = ("surname", "name", "course", "course_color", "email", "phone", "password", "active")
    list_filter = ("course", "active")
    actions = ("change_course", "disable_students")
    resource_classes = [StudentResource]

    @admin.display(description="Color")
    def course_color(self, obj: Student) -> SafeText:
        if not obj.course:
            return SafeText("")
        return course_color(obj.course.color)

    @admin.display(description="Password")
    def password(self, obj: Student) -> SafeText:
        return SafeText(obj.default_password())
    
    @admin.action(description="Deactivate Students")
    def disable_students(self, request: HttpRequest, queryset: QuerySet[Student]):
        for q in queryset.all():
            if q.user:
                q.user.is_staff = False
                q.user.save()
        count: int = queryset.update(active = False)
        messages.success(request, f"{count} students deactivated")
        pass

    @action_with_form(ChangeCourseForm, description="Change Student Course")
    def change_course(self, request: HttpRequest, queryset: QuerySet[Student], data):
        course = data["course"]
        count: int = queryset.update(course=course)
        messages.success(request, f"{count} students updated to {course}")