import logging

from django import forms
from django.contrib import admin
from django.http import JsonResponse

from access_core.monitoring.models import (
    Alignment,
    CarePeriod,
    ClinicalTrack,
    DailyCheckinItem,
    DailyCheckinResponse,
    DailyCheckinSubmission,
    DailyCheckinTemplate,
    DailyStatusLog,
    EligibilityCheck,
    EligibilityRequest,
    EligibilityRequestCondition,
    EnrollmentDecision,
    MissedCheckinEvent,
    MonitoringPlan,
    MonitoringPlanItem,
    MonitoringPlanResult,
    MonitoringPlanTemplate,
    MonthlyPatientSummary,
    PatientAdherenceSummary,
    PatientExecutionLog,
    PatientNotification,
    ProtocolAssignmentVersion,
    ProtocolVersion,
    RawDailyCheckinSubmission,
    TrackSpecificDailyLog,
    Unalignment,
)

logger = logging.getLogger(__name__)


@admin.register(ClinicalTrack)
class ClinicalTrackAdmin(admin.ModelAdmin):
    list_display = ["track_name", "description", "is_active"]


class EligibilityRequestConditionForm(forms.ModelForm):
    """Marks the code input so icd10_autocomplete.js can attach a typeahead."""

    class Meta:
        model = EligibilityRequestCondition
        fields = ["icd10_code", "icd10_description"]

    icd10_code = forms.CharField(
        max_length=10,
        widget=forms.TextInput(attrs={"class": "icd10-code-input"}),
    )


class EligibilityRequestConditionInline(admin.TabularInline):
    model = EligibilityRequestCondition
    form = EligibilityRequestConditionForm
    extra = 1


@admin.register(EligibilityRequest)
class EligibilityRequestAdmin(admin.ModelAdmin):
    list_display = [
        "intake_record",
        "clinical_track",
        "icd10_codes",
        "created_at",
    ]
    list_filter = ["clinical_track"]
    inlines = [EligibilityRequestConditionInline]

    @property
    def media(self):
        # select2 is intentionally NOT used here: its <input> compat shim
        # replaces the ajax data adapter with a local-only lookup, so it can
        # never search on a plain text input. The typeahead is hand-rolled in
        # icd10_autocomplete.js (see that file's header for details).
        return super().media + forms.Media(
            js=("monitoring/icd10_autocomplete.js",),
            css={"screen": ("monitoring/icd10_autocomplete.css",)},
        )

    def icd10_search(self, request):
        """JSON typeahead endpoint searching the local ICD-10-CM snapshot table."""
        from access_core.services.icd10_search import (
            Icd10SearchError,
            search_icd10,
        )

        terms = (request.GET.get("terms") or "").strip()
        if len(terms) < 2:
            return JsonResponse({"results": []})
        try:
            results = search_icd10(terms)
        except Icd10SearchError as exc:
            logger.warning(f"ICD-10-CM search failed for {terms!r}: {exc}")
            # 5xx signals upstream failure; the JS ignores it and manual entry works.
            return JsonResponse({"results": [], "error": str(exc)}, status=502)
        return JsonResponse({"results": results})

    def get_urls(self):
        from django.urls import path

        # Prepend: the built-in <path:object_id>/ history pattern would otherwise
        # swallow "icd10-search" as an object id.
        return [
            path(
                "icd10-search/",
                self.admin_site.admin_view(self.icd10_search),
                name="monitoring_eligibilityrequest_icd10_search",
            )
        ] + super().get_urls()

    @admin.display(description="ICD-10 codes")
    def icd10_codes(self, obj):
        return ", ".join(obj.conditions.values_list("icd10_code", flat=True)) or "—"


@admin.register(EligibilityCheck)
class EligibilityCheckAdmin(admin.ModelAdmin):
    list_display = [
        "intake_record",
        "eligibility_request",
        "requested_track",
        "check_status",
        "checked_at",
    ]
    list_filter = ["check_status"]


@admin.register(Alignment)
class AlignmentAdmin(admin.ModelAdmin):
    list_display = ["intake_record", "clinical_track", "aligned_at"]


@admin.register(Unalignment)
class UnalignmentAdmin(admin.ModelAdmin):
    list_display = ["beneficiary", "unaligned_at", "reason"]


@admin.register(EnrollmentDecision)
class EnrollmentDecisionAdmin(admin.ModelAdmin):
    list_display = ["intake_record", "decision", "decision_by", "decision_at"]
    list_filter = ["decision"]


@admin.register(CarePeriod)
class CarePeriodAdmin(admin.ModelAdmin):
    list_display = [
        "beneficiary",
        "clinical_track",
        "start_date",
        "end_date",
        "operational_status",
    ]
    list_filter = ["operational_status", "baseline_status"]


@admin.register(ProtocolVersion)
class ProtocolVersionAdmin(admin.ModelAdmin):
    list_display = ["version_number", "clinical_track", "is_active", "effective_from"]


@admin.register(ProtocolAssignmentVersion)
class ProtocolAssignmentVersionAdmin(admin.ModelAdmin):
    list_display = ["beneficiary", "protocol_version", "assigned_at"]


@admin.register(PatientExecutionLog)
class PatientExecutionLogAdmin(admin.ModelAdmin):
    list_display = ["beneficiary", "execution_date", "completed", "source_system"]
    list_filter = ["source_system"]


@admin.register(DailyStatusLog)
class DailyStatusLogAdmin(admin.ModelAdmin):
    list_display = ["beneficiary", "log_date", "source_system"]
    list_filter = ["source_system"]


@admin.register(TrackSpecificDailyLog)
class TrackSpecificDailyLogAdmin(admin.ModelAdmin):
    list_display = ["beneficiary", "log_date", "clinical_track", "source_system"]
    list_filter = ["clinical_track", "source_system"]


@admin.register(MonitoringPlanTemplate)
class MonitoringPlanTemplateAdmin(admin.ModelAdmin):
    list_display = ["template_name", "clinical_track", "is_active"]


@admin.register(MonitoringPlan)
class MonitoringPlanAdmin(admin.ModelAdmin):
    list_display = ["beneficiary", "clinical_trigger", "status", "created_at"]
    list_filter = ["status"]


@admin.register(MonitoringPlanItem)
class MonitoringPlanItemAdmin(admin.ModelAdmin):
    list_display = [
        "monitoring_plan",
        "item_description",
        "frequency_interval",
        "status",
    ]
    list_filter = ["status"]


@admin.register(MonitoringPlanResult)
class MonitoringPlanResultAdmin(admin.ModelAdmin):
    list_display = [
        "monitoring_plan_item",
        "result_date",
        "value_numeric",
        "review_status",
    ]


@admin.register(DailyCheckinTemplate)
class DailyCheckinTemplateAdmin(admin.ModelAdmin):
    list_display = ["template_name", "clinical_track", "version", "is_active"]


@admin.register(DailyCheckinItem)
class DailyCheckinItemAdmin(admin.ModelAdmin):
    list_display = ["template", "item_key", "item_type", "display_order"]


@admin.register(DailyCheckinSubmission)
class DailyCheckinSubmissionAdmin(admin.ModelAdmin):
    list_display = ["beneficiary", "submission_date", "source_system", "status"]


@admin.register(DailyCheckinResponse)
class DailyCheckinResponseAdmin(admin.ModelAdmin):
    list_display = ["submission", "item"]


@admin.register(RawDailyCheckinSubmission)
class RawDailyCheckinSubmissionAdmin(admin.ModelAdmin):
    list_display = ["beneficiary", "source_system", "ingested_at"]


@admin.register(MissedCheckinEvent)
class MissedCheckinEventAdmin(admin.ModelAdmin):
    list_display = ["beneficiary", "missed_date", "consecutive_days_missed", "notified"]


@admin.register(PatientAdherenceSummary)
class PatientAdherenceSummaryAdmin(admin.ModelAdmin):
    list_display = ["beneficiary", "period_start", "period_end", "adherence_rate"]


@admin.register(MonthlyPatientSummary)
class MonthlyPatientSummaryAdmin(admin.ModelAdmin):
    list_display = ["beneficiary", "month", "review_status"]


@admin.register(PatientNotification)
class PatientNotificationAdmin(admin.ModelAdmin):
    list_display = ["beneficiary", "notification_type", "channel", "sent_at"]
    list_filter = ["notification_type", "channel"]