from contextlib import suppress
from typing import ClassVar, Type

from constance.admin import Config
from constance.admin import ConstanceAdmin as BaseConstanceAdmin
from django.apps import apps
from django.contrib.admin import ModelAdmin, TabularInline, action, register, site
from django.contrib.gis.admin import GISModelAdmin
from django.db.models import Model
from django.utils.translation import gettext_lazy as _
from modeltranslation.translator import NotRegistered, translator
from modeltranslation.utils import get_translation_fields
from mptt.admin import DraggableMPTTAdmin

from core.forms import OrderForm, OrderProductForm, VendorForm
from core.models import (
    Address,
    Attribute,
    AttributeGroup,
    AttributeValue,
    Brand,
    Category,
    CategoryTag,
    Feedback,
    Order,
    OrderProduct,
    Product,
    ProductImage,
    ProductTag,
    PromoCode,
    Promotion,
    Stock,
    Vendor,
    Wishlist,
)
from evibes.settings import CONSTANCE_CONFIG


class FieldsetsMixin:
    general_fields: list = []
    relation_fields: list = []
    model: ClassVar[Type[Model]]

    def get_fieldsets(self, request, obj=None):
        if request:
            pass

        if obj:
            pass

        fieldsets = []

        def add_translations_fieldset(fss):
            with suppress(NotRegistered):
                transoptions = translator.get_options_for_model(self.model)
                translation_fields = []
                for orig in transoptions.local_fields:
                    translation_fields += get_translation_fields(orig)
                if translation_fields:
                    fss = list(fss) + [(_("translations"), {"fields": translation_fields})]
            return fss

        if self.general_fields:
            fieldsets.append((_("general"), {"fields": self.general_fields}))
        if self.relation_fields:
            fieldsets.append((_("relations"), {"fields": self.relation_fields}))
        opts = self.model._meta

        if any(f.name == "uuid" for f in opts.fields):
            if any(f.name == "slug" for f in opts.fields):
                fieldsets.append((_("metadata"), {"fields": ["uuid", "slug"]}))
            else:
                fieldsets.append((_("metadata"), {"fields": ["uuid"]}))

        ts = []
        for name in ("created", "modified"):
            if any(f.name == name for f in opts.fields):
                ts.append(name)
        if ts:
            fieldsets.append((_("timestamps"), {"fields": ts, "classes": ["collapse"]}))
        fieldsets = add_translations_fieldset(fieldsets)
        return fieldsets


class ActivationActionsMixin:
    @action(description=str(_("activate selected %(verbose_name_plural)s")))
    def activate_selected(self, request, queryset, **kwargs) -> str:
        if kwargs:
            pass
        if request:
            pass
        queryset.update(is_active=True)
        return str(_("%(verbose_name_plural)s activated successfully!"))

    @action(description=str(_("deactivate selected %(verbose_name_plural)s")))
    def deactivate_selected(self, request, queryset, **kwargs) -> str:
        if kwargs:
            pass
        if request:
            pass
        queryset.update(is_active=False)
        return str(_("%(verbose_name_plural)s deactivated successfully."))

    def get_actions(self, request, **kwargs):
        if kwargs:
            pass
        actions = super().get_actions(request)
        actions["activate_selected"] = (
            self.activate_selected,
            "activate_selected",
            str(_("activate selected %(verbose_name_plural)s")),
        )
        actions["deactivate_selected"] = (
            self.deactivate_selected,
            "deactivate_selected",
            str(_("deactivate selected %(verbose_name_plural)s")),
        )
        return actions


class AttributeValueInline(TabularInline):
    model = AttributeValue
    extra = 0
    autocomplete_fields = ["attribute"]
    is_navtab = True
    verbose_name = _("attribute value")
    verbose_name_plural = _("attribute values")
    icon = "fa-solid fa-list-ul"


class ProductImageInline(TabularInline):
    model = ProductImage
    extra = 0
    is_navtab = True
    verbose_name = _("image")
    verbose_name_plural = _("images")
    icon = "fa-regular fa-images"


class StockInline(TabularInline):
    model = Stock
    extra = 0
    is_navtab = True
    verbose_name = _("stock")
    verbose_name_plural = _("stocks")
    icon = "fa-solid fa-boxes-stacked"


class OrderProductInline(TabularInline):
    model = OrderProduct
    extra = 0
    readonly_fields = ("product", "quantity", "buy_price")
    form = OrderProductForm
    is_navtab = True
    verbose_name = _("order product")
    verbose_name_plural = _("order products")
    icon = "fa-solid fa-boxes-packing"

    def get_queryset(self, request):
        return super().get_queryset(request).select_related("product").only("product__name")


class CategoryChildrenInline(TabularInline):
    model = Category
    fk_name = "parent"
    extra = 0
    fields = ("name", "description", "is_active", "image", "markup_percent")
    is_navtab = True
    verbose_name = _("children")
    verbose_name_plural = _("children")
    icon = "fa-solid fa-leaf"


@register(AttributeGroup)
class AttributeGroupAdmin(FieldsetsMixin, ActivationActionsMixin, ModelAdmin):
    model = AttributeGroup
    list_display = ("name", "modified")
    search_fields = ("uuid", "name")
    readonly_fields = ("uuid", "modified", "created")

    general_fields = ["is_active", "name", "parent"]
    relation_fields = []


@register(Attribute)
class AttributeAdmin(FieldsetsMixin, ActivationActionsMixin, ModelAdmin):
    model = Attribute
    list_display = ("name", "group", "value_type", "modified")
    list_filter = ("value_type", "group", "is_active")
    search_fields = ("uuid", "name", "group__name")
    readonly_fields = ("uuid", "modified", "created")
    autocomplete_fields = ["categories", "group"]

    general_fields = ["is_active", "name", "value_type"]
    relation_fields = ["group", "categories"]


@register(AttributeValue)
class AttributeValueAdmin(FieldsetsMixin, ActivationActionsMixin, ModelAdmin):
    model = AttributeValue
    list_display = ("attribute", "value", "modified")
    list_filter = ("attribute__group", "is_active")
    search_fields = ("uuid", "value", "attribute__name")
    readonly_fields = ("uuid", "modified", "created")
    autocomplete_fields = ["attribute"]

    general_fields = ["is_active", "value"]
    relation_fields = ["attribute", "product"]


@register(Category)
class CategoryAdmin(FieldsetsMixin, ActivationActionsMixin, DraggableMPTTAdmin):
    model = Category
    list_display = ("indented_title", "parent", "is_active", "modified")
    # noinspection PyUnresolvedReferences
    list_filter = ("is_active", "level", "created", "modified")
    search_fields = ("uuid", "name")
    inlines = [CategoryChildrenInline]
    autocomplete_fields = ["parent", "tags"]
    readonly_fields = ("slug", "uuid", "modified", "created")

    general_fields = ["is_active", "name", "description", "image", "markup_percent", "priority"]
    relation_fields = ["parent", "tags"]


@register(Brand)
class BrandAdmin(FieldsetsMixin, ActivationActionsMixin, ModelAdmin):
    model = Brand
    list_display = ("name",)
    list_filter = ("categories", "is_active")
    search_fields = ("uuid", "name", "categories__name")
    readonly_fields = ("uuid", "slug", "modified", "created")

    general_fields = ["is_active", "name", "description", "priority"]
    relation_fields = ["small_logo", "big_logo", "categories"]


@register(Product)
class ProductAdmin(FieldsetsMixin, ActivationActionsMixin, ModelAdmin):
    model = Product
    list_display = (
        "name",
        "partnumber",
        "is_active",
        "category",
        "brand",
        "price",
        "rating",
        "modified",
    )
    list_filter = (
        "is_active",
        "is_digital",
        "stocks__vendor",
        "tags__name",
        "created",
        "modified",
    )
    search_fields = (
        "name",
        "partnumber",
        "brand__name",
        "brand__slug",
        "category__name",
        "category__slug",
        "uuid",
        "slug",
    )
    readonly_fields = ("slug", "uuid", "modified", "created")
    autocomplete_fields = ("category", "brand", "tags")
    inlines = [AttributeValueInline, ProductImageInline, StockInline]

    general_fields = ["is_active", "name", "partnumber", "is_digital"]
    relation_fields = ["category", "brand", "tags"]


@register(ProductTag)
class ProductTagAdmin(FieldsetsMixin, ActivationActionsMixin, ModelAdmin):
    model = ProductTag
    list_display = ("tag_name",)
    search_fields = ("tag_name",)
    readonly_fields = ("uuid", "modified", "created")

    general_fields = ["is_active", "tag_name", "name"]
    relation_fields = []


@register(CategoryTag)
class CategoryTagAdmin(FieldsetsMixin, ActivationActionsMixin, ModelAdmin):
    model = CategoryTag
    list_display = ("tag_name",)
    search_fields = ("tag_name",)
    readonly_fields = ("uuid", "modified", "created")

    general_fields = ["is_active", "tag_name", "name"]
    relation_fields = []


@register(Vendor)
class VendorAdmin(FieldsetsMixin, ActivationActionsMixin, ModelAdmin):
    model = Vendor
    list_display = ("name", "markup_percent", "modified")
    list_filter = ("markup_percent", "is_active")
    search_fields = ("name",)
    readonly_fields = ("uuid", "modified", "created")
    form = VendorForm

    general_fields = ["is_active", "name", "markup_percent", "authentication"]
    relation_fields = []


@register(Feedback)
class FeedbackAdmin(FieldsetsMixin, ActivationActionsMixin, ModelAdmin):
    model = Feedback
    list_display = ("order_product", "rating", "comment", "modified")
    list_filter = ("rating", "is_active")
    search_fields = ("order_product__product__name", "comment")
    readonly_fields = ("uuid", "modified", "created")

    general_fields = ["is_active", "rating", "comment"]
    relation_fields = ["order_product"]


@register(Order)
class OrderAdmin(FieldsetsMixin, ActivationActionsMixin, ModelAdmin):
    model = Order
    list_display = (
        "human_readable_id",
        "user",
        "status",
        "total_price",
        "buy_time",
        "modified",
    )
    list_filter = ("status", "buy_time", "modified", "created")
    search_fields = ("user__email", "status", "uuid", "human_readable_id")
    readonly_fields = (
        "total_price",
        "total_quantity",
        "human_readable_id",
        "uuid",
        "modified",
        "created",
    )
    inlines = [OrderProductInline]
    form = OrderForm

    general_fields = ["is_active", "user", "status"]
    relation_fields = ["promo_code", "billing_address", "shipping_address"]


@register(OrderProduct)
class OrderProductAdmin(FieldsetsMixin, ActivationActionsMixin, ModelAdmin):
    model = OrderProduct
    list_display = ("order", "product", "quantity", "buy_price", "status", "modified")
    list_filter = ("status",)
    search_fields = ("order__user__email", "product__name")
    readonly_fields = ("uuid", "modified", "created")
    form = OrderProductForm

    general_fields = ["is_active", "quantity", "buy_price", "status"]
    relation_fields = ["order", "product"]


@register(PromoCode)
class PromoCodeAdmin(FieldsetsMixin, ActivationActionsMixin, ModelAdmin):
    model = PromoCode
    list_display = (
        "code",
        "discount_percent",
        "discount_amount",
        "start_time",
        "end_time",
        "used_on",
    )
    list_filter = ("discount_percent", "discount_amount", "start_time", "end_time")
    search_fields = ("code",)
    readonly_fields = ("used_on", "uuid", "modified", "created")
    autocomplete_fields = ("user",)

    general_fields = [
        "is_active",
        "code",
        "discount_amount",
        "discount_percent",
        "start_time",
        "end_time",
        "used_on",
    ]
    relation_fields = ["user"]


@register(Promotion)
class PromotionAdmin(FieldsetsMixin, ActivationActionsMixin, ModelAdmin):
    model = Promotion
    list_display = ("name", "discount_percent", "modified")
    search_fields = ("name",)
    readonly_fields = ("uuid", "modified", "created")
    autocomplete_fields = ("products",)

    general_fields = ["is_active", "name", "discount_percent", "description"]
    relation_fields = ["products"]


@register(Stock)
class StockAdmin(FieldsetsMixin, ActivationActionsMixin, ModelAdmin):
    model = Stock
    list_display = ("product", "vendor", "sku", "quantity", "price", "modified")
    list_filter = ("vendor", "quantity")
    search_fields = ("product__name", "vendor__name", "sku")
    readonly_fields = ("uuid", "modified", "created")
    autocomplete_fields = ("product", "vendor")

    general_fields = [
        "is_active",
        "sku",
        "quantity",
        "price",
        "purchase_price",
        "digital_asset",
    ]
    relation_fields = ["product", "vendor"]


@register(Wishlist)
class WishlistAdmin(FieldsetsMixin, ActivationActionsMixin, ModelAdmin):
    model = Wishlist
    list_display = ("user", "modified")
    search_fields = ("user__email",)
    readonly_fields = ("uuid", "modified", "created")

    general_fields = ["is_active", "user"]
    relation_fields = ["products"]


@register(ProductImage)
class ProductImageAdmin(FieldsetsMixin, ActivationActionsMixin, ModelAdmin):
    model = ProductImage
    list_display = ("alt", "product", "priority", "modified")
    list_filter = ("priority",)
    search_fields = ("alt", "product__name")
    readonly_fields = ("uuid", "modified", "created")
    autocomplete_fields = ("product",)

    general_fields = ["is_active", "alt", "priority", "image"]
    relation_fields = ["product"]


@register(Address)
class AddressAdmin(FieldsetsMixin, GISModelAdmin):
    model = Address
    list_display = ("street", "city", "region", "country", "user")
    list_filter = ("country", "region")
    search_fields = ("street", "city", "postal_code", "user__email")
    readonly_fields = ("uuid", "modified", "created")
    gis_widget_kwargs = {
        "attrs": {
            "default_lon": 37.61556,
            "default_lat": 55.75222,
            "default_zoom": 6,
        }
    }

    general_fields = [
        "is_active",
        "address_line",
        "street",
        "district",
        "city",
        "region",
        "postal_code",
        "country",
        "raw_data",
    ]
    relation_fields = ["user", "api_response"]


# Constance configuration
class ConstanceConfig:
    class Meta:
        app_label = "core"
        object_name = "Config"
        concrete_model = None
        model_name = module_name = "config"
        verbose_name_plural = _("Config")
        abstract = False
        swapped = False
        is_composite_pk = False

        def get_change_permission(self):
            return f"change_{self.model_name}"

        @property
        def app_config(self):
            return apps.get_app_config(self.app_label)

        @property
        def label(self):
            return f"{self.app_label}.{self.object_name}"

        @property
        def label_lower(self):
            return f"{self.app_label}.{self.model_name}"

        def get_ordered_objects(self):
            return False

    _meta = Meta()


# noinspection PyTypeChecker
site.unregister([Config])
# noinspection PyTypeChecker
site.register([ConstanceConfig], BaseConstanceAdmin)
site.site_title = CONSTANCE_CONFIG["PROJECT_NAME"][0]
site.site_header = "eVibes"
site.index_title = CONSTANCE_CONFIG["PROJECT_NAME"][0]