from typing import Any

from django.contrib.auth.decorators import login_required
from django.core.paginator import Paginator
from django.http import (
    HttpRequest,
    HttpResponse,
    HttpResponseBadRequest,
    HttpResponseRedirect,
)
from django.shortcuts import get_object_or_404, redirect, render
from django.template.loader import render_to_string
from django.urls import reverse
from django.utils import timezone

from common.components import A, Button, Icon, LinkedNameWithPlatformIcon
from common.time import dateformat
from games.forms import PurchaseForm
from games.models import Edition, Purchase
from games.views.general import use_custom_redirect


@login_required
def list_purchases(request: HttpRequest) -> HttpResponse:
    context: dict[Any, Any] = {}
    page_number = request.GET.get("page", 1)
    limit = request.GET.get("limit", 10)
    purchases = Purchase.objects.order_by("-date_purchased")
    page_obj = None
    if int(limit) != 0:
        paginator = Paginator(purchases, limit)
        page_obj = paginator.get_page(page_number)
        purchases = page_obj.object_list

    context = {
        "title": "Manage purchases",
        "page_obj": page_obj or None,
        "elided_page_range": (
            page_obj.paginator.get_elided_page_range(
                page_number, on_each_side=1, on_ends=1
            )
            if page_obj
            else None
        ),
        "data": {
            "header_action": A([], Button([], "Add purchase"), url="add_purchase"),
            "columns": [
                "Name",
                "Type",
                "Price",
                "Currency",
                "Infinite",
                "Purchased",
                "Refunded",
                "Finished",
                "Dropped",
                "Created",
                "Actions",
            ],
            "rows": [
                [
                    LinkedNameWithPlatformIcon(
                        name=purchase.edition.name,
                        game_id=purchase.edition.game.pk,
                        platform=purchase.platform,
                    ),
                    purchase.get_type_display(),
                    purchase.price,
                    purchase.price_currency,
                    purchase.infinite,
                    purchase.date_purchased.strftime(dateformat),
                    (
                        purchase.date_refunded.strftime(dateformat)
                        if purchase.date_refunded
                        else "-"
                    ),
                    (
                        purchase.date_finished.strftime(dateformat)
                        if purchase.date_finished
                        else "-"
                    ),
                    (
                        purchase.date_dropped.strftime(dateformat)
                        if purchase.date_dropped
                        else "-"
                    ),
                    purchase.created_at.strftime(dateformat),
                    render_to_string(
                        "cotton/button_group.html",
                        {
                            "buttons": [
                                {
                                    "href": reverse(
                                        "finish_purchase", args=[purchase.pk]
                                    ),
                                    "slot": Icon("checkmark"),
                                    "title": "Mark as finished",
                                }
                                if not purchase.date_finished
                                else {},
                                {
                                    "href": reverse(
                                        "drop_purchase", args=[purchase.pk]
                                    ),
                                    "slot": Icon("eject"),
                                    "title": "Mark as dropped",
                                }
                                if not purchase.date_dropped
                                else {},
                                {
                                    "href": reverse(
                                        "refund_purchase", args=[purchase.pk]
                                    ),
                                    "slot": Icon("refund"),
                                    "title": "Mark as refunded",
                                }
                                if not purchase.date_refunded
                                else {},
                                {
                                    "href": reverse(
                                        "edit_purchase", args=[purchase.pk]
                                    ),
                                    "slot": Icon("edit"),
                                    "title": "Edit",
                                    "color": "gray",
                                },
                                {
                                    "href": reverse(
                                        "delete_purchase", args=[purchase.pk]
                                    ),
                                    "slot": Icon("delete"),
                                    "title": "Delete",
                                    "color": "red",
                                },
                            ]
                        },
                    ),
                ]
                for purchase in purchases
            ],
        },
    }
    return render(request, "list_purchases.html", context)


@login_required
def add_purchase(request: HttpRequest, edition_id: int = 0) -> HttpResponse:
    context: dict[str, Any] = {}
    initial = {"date_purchased": timezone.now()}

    if request.method == "POST":
        form = PurchaseForm(request.POST or None, initial=initial)
        if form.is_valid():
            purchase = form.save()
            if "submit_and_redirect" in request.POST:
                return HttpResponseRedirect(
                    reverse(
                        "add_session_for_purchase", kwargs={"purchase_id": purchase.id}
                    )
                )
            else:
                return redirect("list_purchases")
    else:
        if edition_id:
            edition = Edition.objects.get(id=edition_id)
            form = PurchaseForm(
                initial={
                    **initial,
                    "edition": edition,
                    "platform": edition.platform,
                }
            )
        else:
            form = PurchaseForm(initial=initial)

    context["form"] = form
    context["title"] = "Add New Purchase"
    context["script_name"] = "add_purchase.js"
    return render(request, "add_purchase.html", context)


@login_required
@use_custom_redirect
def edit_purchase(request: HttpRequest, purchase_id: int) -> HttpResponse:
    context = {}
    purchase = get_object_or_404(Purchase, id=purchase_id)
    form = PurchaseForm(request.POST or None, instance=purchase)
    if form.is_valid():
        form.save()
        return redirect("list_sessions")
    context["title"] = "Edit Purchase"
    context["form"] = form
    context["purchase_id"] = str(purchase_id)
    context["script_name"] = "add_purchase.js"
    return render(request, "add_purchase.html", context)


@login_required
def delete_purchase(request: HttpRequest, purchase_id: int) -> HttpResponse:
    purchase = get_object_or_404(Purchase, id=purchase_id)
    purchase.delete()
    return redirect("list_purchases")


@login_required
def drop_purchase(request: HttpRequest, purchase_id: int) -> HttpResponse:
    purchase = get_object_or_404(Purchase, id=purchase_id)
    purchase.date_dropped = timezone.now()
    purchase.save()
    return redirect("list_purchases")


@login_required
def refund_purchase(request: HttpRequest, purchase_id: int) -> HttpResponse:
    purchase = get_object_or_404(Purchase, id=purchase_id)
    purchase.date_refunded = timezone.now()
    purchase.save()
    return redirect("list_purchases")


@login_required
def finish_purchase(request: HttpRequest, purchase_id: int) -> HttpResponse:
    purchase = get_object_or_404(Purchase, id=purchase_id)
    purchase.date_finished = timezone.now()
    purchase.save()
    return redirect("list_purchases")


def related_purchase_by_edition(request: HttpRequest) -> HttpResponse:
    edition_id = request.GET.get("edition")
    if not edition_id:
        return HttpResponseBadRequest("Invalid edition_id")
    form = PurchaseForm()
    form.fields["related_purchase"].queryset = Purchase.objects.filter(
        edition_id=edition_id, type=Purchase.GAME
    ).order_by("edition__sort_name")
    return render(request, "partials/related_purchase_field.html", {"form": form})