import logging

from django.contrib import messages
from django.contrib.auth.decorators import login_required
from django.http import HttpResponse
from django.shortcuts import get_object_or_404, redirect, render
from django.views.decorators.http import require_http_methods, require_POST

from shipping.models import Shipment
from shipping.services import (
    ShippingError,
    buy_label,
    create_shipment_for_order,
    pirate_ship_csv,
    quote_rates,
)
from shop.models import Order

logger = logging.getLogger(__name__)


@login_required
def shipment_list(request):
    shipments = Shipment.objects.select_related("order")[:200]
    labeled = Shipment.objects.filter(status=Shipment.Status.LABELED).values_list(
        "order_id", flat=True
    )
    unshipped = Order.objects.filter(status=Order.Status.PAID).exclude(pk__in=labeled)
    return render(
        request,
        "shipping/list.html",
        {"shipments": shipments, "unshipped": unshipped},
    )


@login_required
@require_POST
def shipment_create(request):
    order = get_object_or_404(Order, pk=request.POST.get("order"))
    try:
        weight = int(request.POST.get("weight_oz") or "16")
    except ValueError:
        weight = 16
    try:
        shipment = create_shipment_for_order(order, weight_oz=weight)
        quote_rates(shipment)
    except ShippingError as exc:
        messages.error(request, str(exc))
        return redirect("shipping:shipment_list")
    except Exception as exc:  # noqa: BLE001
        logger.exception("rate quote failed")
        messages.error(request, f"Could not quote rates: {exc}")
        return redirect("shipping:shipment_list")
    return redirect("shipping:shipment_detail", pk=shipment.pk)


@login_required
def shipment_detail(request, pk):
    shipment = get_object_or_404(Shipment.objects.select_related("order"), pk=pk)
    return render(request, "shipping/detail.html", {"shipment": shipment})


@login_required
@require_POST
def shipment_buy(request, pk):
    shipment = get_object_or_404(Shipment, pk=pk)
    rate_id = (request.POST.get("rate_id") or "").strip()
    try:
        buy_label(shipment, rate_id=rate_id)
    except ShippingError as exc:
        messages.error(request, str(exc))
    except Exception as exc:  # noqa: BLE001
        logger.exception("buy label failed")
        messages.error(request, f"Could not buy label: {exc}")
    else:
        messages.success(request, f"Label created for {shipment.order.number}.")
    return redirect("shipping:shipment_detail", pk=shipment.pk)


@login_required
@require_http_methods(["GET"])
def pirate_ship_export(request):
    body = pirate_ship_csv()
    response = HttpResponse(body, content_type="text/csv")
    response["Content-Disposition"] = 'attachment; filename="pirate-ship-orders.csv"'
    return response