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.contrib.messages import constants as messages
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,
    CustomerRelationshipManagementProvider,
    OrderCrmLink,
)
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

        meta_fields = []

        if any(f.name == "uuid" for f in opts.fields):
            meta_fields.append("uuid")

        if any(f.name == "slug" for f in opts.fields):
            meta_fields.append("slug")

        if any(f.name == "sku" for f in opts.fields):
            meta_fields.append("sku")

        if any(f.name == "human_readable_id" for f in opts.fields):
            meta_fields.append("sku")

        if meta_fields:
            fieldsets.append((_("metadata"), {"fields": meta_fields}))

        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


# noinspection PyUnresolvedReferences
class ActivationActionsMixin:
    actions_on_top = True
    actions_on_bottom = True
    actions = [
        "delete_selected",
        "activate_selected",
        "deactivate_selected",
    ]

    @action(description=_("activate selected %(verbose_name_plural)s").lower(), permissions=["change"])
    def activate_selected(self, request, queryset):
        try:
            queryset.update(is_active=True)
            self.message_user(
                request=request, message=_("selected items have been activated.").lower(), level=messages.SUCCESS
            )

        except Exception as e:
            self.message_user(request=request, message=str(e), level=messages.ERROR)

    @action(description=_("deactivate selected %(verbose_name_plural)s").lower(), permissions=["change"])
    def deactivate_selected(self, request, queryset):
        try:
            queryset.update(is_active=False)
            self.message_user(
                request=request, message=_("selected items have been deactivated.").lower(), level=messages.SUCCESS
            )

        except Exception as e:
            self.message_user(request=request, message=str(e), level=messages.ERROR)


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):  # type: ignore [misc]
    # noinspection PyClassVar
    model = AttributeGroup  # type: ignore [misc]
    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):  # type: ignore [misc]
    # noinspection PyClassVar
    model = Attribute  # type: ignore [misc]
    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):  # type: ignore [misc]
    # noinspection PyClassVar
    model = AttributeValue  # type: ignore [misc]
    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):
    # noinspection PyClassVar
    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):  # type: ignore [misc]
    # noinspection PyClassVar
    model = Brand  # type: ignore [misc]
    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):  # type: ignore [misc]
    # noinspection PyClassVar
    model = Product  # type: ignore [misc]
    list_display = (
        "sku",
        "name",
        "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",
        "sku",
    )
    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):  # type: ignore [misc]
    # noinspection PyClassVar
    model = ProductTag  # type: ignore [misc]
    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):  # type: ignore [misc]
    # noinspection PyClassVar
    model = CategoryTag  # type: ignore [misc]
    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):  # type: ignore [misc]
    # noinspection PyClassVar
    model = Vendor  # type: ignore [misc]
    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", "b2b_auth_token"]
    relation_fields = ["users"]


@register(Feedback)
class FeedbackAdmin(FieldsetsMixin, ActivationActionsMixin, ModelAdmin):  # type: ignore [misc]
    # noinspection PyClassVar
    model = Feedback  # type: ignore [misc]
    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):  # type: ignore [misc]
    # noinspection PyClassVar
    model = Order  # type: ignore [misc]
    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", "notifications", "attributes", "buy_time"]
    relation_fields = ["promo_code", "billing_address", "shipping_address"]


@register(OrderProduct)
class OrderProductAdmin(FieldsetsMixin, ActivationActionsMixin, ModelAdmin):  # type: ignore [misc]
    # noinspection PyClassVar
    model = OrderProduct  # type: ignore [misc]
    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):  # type: ignore [misc]
    # noinspection PyClassVar
    model = PromoCode  # type: ignore [misc]
    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):  # type: ignore [misc]
    # noinspection PyClassVar
    model = Promotion  # type: ignore [misc]
    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):  # type: ignore [misc]
    # noinspection PyClassVar
    model = Stock  # type: ignore [misc]
    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):  # type: ignore [misc]
    # noinspection PyClassVar
    model = Wishlist  # type: ignore [misc]
    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):  # type: ignore [misc]
    # noinspection PyClassVar
    model = ProductImage  # type: ignore [misc]
    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):
    # noinspection PyClassVar
    model = Address  # type: ignore [misc]
    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",
    ]


@register(CustomerRelationshipManagementProvider)
class CustomerRelationshipManagementProviderAdmin(FieldsetsMixin, ModelAdmin):
    # noinspection PyClassVar
    model = CustomerRelationshipManagementProvider  # type: ignore [misc]
    list_display = ("name", "default")
    search_fields = ("name",)
    readonly_fields = ("uuid", "modified", "created")

    general_fields = [
        "is_active",
        "name",
        "default",
        "integration_url",
        "integration_location",
        "attributes",
        "authentication",
    ]
    relation_fields = []


@register(OrderCrmLink)
class OrderCrmLinkAdmin(FieldsetsMixin, ModelAdmin):
    # noinspection PyClassVar
    model = OrderCrmLink  # type: ignore [misc]
    list_display = ("crm_lead_id",)
    search_fields = ("crm_lead_id",)
    readonly_fields = (
        "uuid",
        "modified",
        "created",
        "crm_lead_id",
    )

    general_fields = [
        "is_active",
        "crm_lead_id",
    ]
    relation_fields = [
        "order",
        "crm",
    ]


# 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)  # type: ignore [list-item]
site.site_title = CONSTANCE_CONFIG["PROJECT_NAME"][0]  # type: ignore [assignment]
site.site_header = "eVibes"
site.index_title = CONSTANCE_CONFIG["PROJECT_NAME"][0]  # type: ignore [assignment]