from django.contrib import admin

from .models import CallRecord, PointsLedger


class ReadOnlyLedgerAdmin(admin.ModelAdmin):
    def get_readonly_fields(self, request, obj=None):
        return tuple(field.name for field in self.model._meta.fields)

    def has_add_permission(self, request):
        return False

    def has_change_permission(self, request, obj=None):
        return False

    def has_delete_permission(self, request, obj=None):
        return False


@admin.register(PointsLedger)
class PointsLedgerAdmin(ReadOnlyLedgerAdmin):
    list_display = (
        "created_at",
        "user",
        "change_type",
        "points_delta",
        "balance_after",
        "ref_order_id",
        "ref_call",
    )
    list_filter = ("change_type", "created_at")
    search_fields = ("user__username", "user__email", "reason")
    ordering = ("-created_at", "-id")


@admin.register(CallRecord)
class CallRecordAdmin(ReadOnlyLedgerAdmin):
    list_display = (
        "created_at",
        "user",
        "api_key",
        "operation_type",
        "alias",
        "model_used",
        "points_cost",
        "status",
        "upstream_latency_ms",
    )
    list_filter = ("operation_type", "status", "created_at")
    search_fields = (
        "user__username",
        "user__email",
        "api_key__key_prefix",
        "alias",
        "model_used",
        "error_message",
        "result_ref",
        "result_summary",
    )
    ordering = ("-created_at", "-id")