from django.contrib.auth.decorators import login_required
from django.shortcuts import render, get_object_or_404
from django.http import HttpResponse
from django.db.models import Q
from .models import Employee
from .forms import EmployeeForm


@login_required
def user_list(request):
    query = request.GET.get("search", "")
    employees = Employee.objects.all().order_by("name")

    if query:
        # Filter by name, username, or role (case-insensitive)
        employees = employees.filter(
            Q(name__icontains=query)
            | Q(username__icontains=query)
            | Q(role__icontains=query)
        )

    context = {"employees": employees}

    # If the request comes from HTMX, only return the table rows
    if request.headers.get("HX-Request"):
        return render(request, "users/partials/user_table.html", context)

    # Otherwise, return the full page
    return render(request, "users/user_list.html", context)


@login_required
def employee_form(request, pk=None):
    if pk:
        employee = get_object_or_404(Employee, pk=pk)
    else:
        employee = None

    if request.method == "POST":
        form = EmployeeForm(request.POST, instance=employee)
        if form.is_valid():
            form.save()
            # Return a 204 No Content response, but trigger custom HTMX events
            response = HttpResponse(status=204)
            response["HX-Trigger"] = "employeeListChanged, closeModal"
            return response
    else:
        form = EmployeeForm(instance=employee)

    return render(
        request,
        "users/partials/employee_form.html",
        {"form": form, "employee": employee},
    )