from django.contrib import admin
from django.contrib.gis.admin import GISModelAdmin
from .models import Park, ParkArea, ParkLocation, Company, CompanyHeadquarters


class ParkLocationInline(admin.StackedInline):
    """Inline admin for ParkLocation"""

    model = ParkLocation
    extra = 0
    fields = (
        ("city", "state", "country"),
        "street_address",
        "postal_code",
        "point",
        ("highway_exit", "best_arrival_time"),
        "parking_notes",
        "seasonal_notes",
        ("osm_id", "osm_type"),
    )


class ParkLocationAdmin(GISModelAdmin):
    """Admin for standalone ParkLocation management"""

    list_display = (
        "park",
        "city",
        "state",
        "country",
        "latitude",
        "longitude",
    )
    list_filter = ("country", "state")
    search_fields = (
        "park__name",
        "city",
        "state",
        "country",
        "street_address",
    )
    readonly_fields = ("latitude", "longitude", "coordinates")
    fieldsets = (
        ("Park", {"fields": ("park",)}),
        (
            "Address",
            {
                "fields": (
                    "street_address",
                    "city",
                    "state",
                    "country",
                    "postal_code",
                )
            },
        ),
        (
            "Geographic Coordinates",
            {
                "fields": ("point", "latitude", "longitude", "coordinates"),
                "description": "Set coordinates by clicking on the map or entering latitude/longitude",
            },
        ),
        (
            "Travel Information",
            {
                "fields": (
                    "highway_exit",
                    "best_arrival_time",
                    "parking_notes",
                    "seasonal_notes",
                ),
                "classes": ("collapse",),
            },
        ),
        (
            "OpenStreetMap Integration",
            {"fields": ("osm_id", "osm_type"), "classes": ("collapse",)},
        ),
    )

    def latitude(self, obj):
        return obj.latitude

    latitude.short_description = "Latitude"

    def longitude(self, obj):
        return obj.longitude

    longitude.short_description = "Longitude"


class ParkAdmin(admin.ModelAdmin):
    list_display = (
        "name",
        "formatted_location",
        "status",
        "operator",
        "property_owner",
        "created_at",
        "updated_at",
    )
    list_filter = ("status", "location__country", "location__state")
    search_fields = (
        "name",
        "description",
        "location__city",
        "location__state",
        "location__country",
    )
    readonly_fields = ("created_at", "updated_at")
    prepopulated_fields = {"slug": ("name",)}
    inlines = [ParkLocationInline]

    def formatted_location(self, obj):
        """Display formatted location string"""
        return obj.formatted_location

    formatted_location.short_description = "Location"


class ParkAreaAdmin(admin.ModelAdmin):
    list_display = ("name", "park", "created_at", "updated_at")
    list_filter = ("park",)
    search_fields = ("name", "description", "park__name")
    readonly_fields = ("created_at", "updated_at")
    prepopulated_fields = {"slug": ("name",)}


class CompanyHeadquartersInline(admin.StackedInline):
    """Inline admin for CompanyHeadquarters"""

    model = CompanyHeadquarters
    extra = 0
    fields = (
        ("city", "state_province", "country"),
        "street_address",
        "postal_code",
        "mailing_address",
    )


class CompanyHeadquartersAdmin(admin.ModelAdmin):
    """Admin for standalone CompanyHeadquarters management"""

    list_display = (
        "company",
        "location_display",
        "city",
        "country",
        "created_at",
    )
    list_filter = ("country", "state_province")
    search_fields = (
        "company__name",
        "city",
        "state_province",
        "country",
        "street_address",
    )
    readonly_fields = ("created_at", "updated_at")
    fieldsets = (
        ("Company", {"fields": ("company",)}),
        (
            "Address",
            {
                "fields": (
                    "street_address",
                    "city",
                    "state_province",
                    "country",
                    "postal_code",
                )
            },
        ),
        (
            "Additional Information",
            {"fields": ("mailing_address",), "classes": ("collapse",)},
        ),
        (
            "Metadata",
            {"fields": ("created_at", "updated_at"), "classes": ("collapse",)},
        ),
    )


class CompanyAdmin(admin.ModelAdmin):
    """Enhanced Company admin with headquarters inline"""

    list_display = (
        "name",
        "roles_display",
        "headquarters_location",
        "website",
        "founded_year",
    )
    list_filter = ("roles",)
    search_fields = ("name", "description")
    readonly_fields = ("created_at", "updated_at")
    prepopulated_fields = {"slug": ("name",)}
    inlines = [CompanyHeadquartersInline]

    def roles_display(self, obj):
        """Display roles as a formatted string"""
        return ", ".join(obj.roles) if obj.roles else "No roles"

    roles_display.short_description = "Roles"

    def headquarters_location(self, obj):
        """Display headquarters location if available"""
        if hasattr(obj, "headquarters"):
            return obj.headquarters.location_display
        return "No headquarters"

    headquarters_location.short_description = "Headquarters"


# Register the models with their admin classes
admin.site.register(Park, ParkAdmin)
admin.site.register(ParkArea, ParkAreaAdmin)
admin.site.register(ParkLocation, ParkLocationAdmin)
admin.site.register(Company, CompanyAdmin)
admin.site.register(CompanyHeadquarters, CompanyHeadquartersAdmin)