import { BillingService } from '../billing/billing.service';
import type { OpenApiService } from '../open-api/open-api.service';
import { PrismaService } from '../prisma/prisma.service';
import type { GatewaySubmitResultDto, GatewaySubmitSegmentResultDto, GatewayReceiptEventDto, GatewayUplinkEventDto, UplinkMatchCandidateInput, GatewayPendingDeliveryQueryDto, GatewayDownstreamSentDto, GatewayDownstreamAcknowledgedDto, GatewayDownstreamFailureType, GatewaySubmitDeadLetterDto, RequeueGatewaySubmitExceptionDto, GatewayDownstreamRecoveryStatusDto, TimeoutUnknownDto } from './send-chain.contracts';
import { downstreamPendingTimeoutHours } from './send-chain.helpers';
import type { SendSubmissionService } from './send-submission.service';
import { SendAccountingService } from './send-accounting.service';
import { SendDownstreamDeliveryService } from './send-downstream-delivery.service';
import { SendDownstreamStateService } from './send-downstream-state.service';
import { SendGatewayResultService } from './send-gateway-result.service';
import { SendReceiptService } from './send-receipt.service';
import { SendRetryService } from './send-retry.service';
import { SendTimeoutService } from './send-timeout.service';


export type SendCompletionCallbacks = Record<string, never>;
export type SendCompletionFacade = SendCompletionService & SendSubmissionService;

/**
 * R10 internal compatibility facade. SendChainService remains the only public NestJS provider.
 */
export class SendCompletionService {
  private readonly gatewayResult: SendGatewayResultService;
  private readonly receipt: SendReceiptService;
  private readonly retry: SendRetryService;
  private readonly accounting: SendAccountingService;
  private readonly downstreamState: SendDownstreamStateService;
  private readonly downstreamDelivery: SendDownstreamDeliveryService;
  private readonly timeout: SendTimeoutService;

  constructor(
    prisma: PrismaService,
    billing: BillingService,
    openApi: OpenApiService | undefined,
    facade: SendCompletionFacade,
    callbacks: SendCompletionCallbacks = {},
  ) {
    this.gatewayResult = new SendGatewayResultService(prisma, billing, openApi, facade, callbacks);
    this.receipt = new SendReceiptService(prisma, billing, openApi, facade, callbacks);
    this.retry = new SendRetryService(prisma, billing, openApi, facade, callbacks);
    this.accounting = new SendAccountingService(prisma, billing, openApi, facade, callbacks);
    this.downstreamState = new SendDownstreamStateService(prisma, billing, openApi, facade, callbacks);
    this.downstreamDelivery = new SendDownstreamDeliveryService(prisma, billing, openApi, facade, callbacks);
    this.timeout = new SendTimeoutService(prisma, billing, openApi, facade, callbacks);
  }

  async handleSubmitSegmentResult(data: GatewaySubmitSegmentResultDto) {
    return this.gatewayResult.handleSubmitSegmentResult(data);
  }

  async resolveSubmitRecordForGatewaySegmentResult(
    messageRecordId: string,
    data: GatewaySubmitSegmentResultDto,
  ) {
    return this.gatewayResult.resolveSubmitRecordForGatewaySegmentResult(messageRecordId, data);
  }

  async handleSubmitResult(data: GatewaySubmitResultDto) {
    return this.gatewayResult.handleSubmitResult(data);
  }

  async resolveSubmitRecordForGatewayResult(messageRecordId: string, data: GatewaySubmitResultDto) {
    return this.gatewayResult.resolveSubmitRecordForGatewayResult(messageRecordId, data);
  }

  smsMessageSegmentAuditDelegate() {
    return this.gatewayResult.smsMessageSegmentAuditDelegate();
  }

  async recordSubmitSegments(
    message: {
      id: string;
      tenantId?: string | null;
      batchTaskId?: string | null;
      channelId?: string | null;
      submitId?: string | null;
      billingUnits?: number | null;
    },
    data: GatewaySubmitResultDto,
    submittedAt: Date,
  ) {
    return this.gatewayResult.recordSubmitSegments(message, data, submittedAt);
  }

  async findMessageByGatewayEvent(messageId?: string, gatewayMessageId?: string) {
    return this.gatewayResult.findMessageByGatewayEvent(messageId, gatewayMessageId);
  }

  async requireMessageByGatewayEvent(messageId?: string, gatewayMessageId?: string) {
    return this.gatewayResult.requireMessageByGatewayEvent(messageId, gatewayMessageId);
  }

  async intakeReceipt(data: GatewayReceiptEventDto) {
    return this.receipt.intakeReceipt(data);
  }

  async processPendingUpstreamReceiptInbox(limit = 100) {
    return this.receipt.processPendingUpstreamReceiptInbox(limit);
  }

  async processUpstreamReceiptInboxRecord(id: string) {
    return this.receipt.processUpstreamReceiptInboxRecord(id);
  }

  async runUpstreamReceiptInboxScan() {
    return this.receipt.runUpstreamReceiptInboxScan();
  }

  async handleReceipt(
    data: GatewayReceiptEventDto,
    incomingIdentity?: { account: string; gatewayHost: string; gatewayPort: number; protocol: string; cmppVersion: string },
  ) {
    return this.receipt.handleReceipt(data, incomingIdentity);
  }

  async recordReceiptSegment(
    message: {
      id: string;
      tenantId?: string | null;
      batchTaskId?: string | null;
      channelId?: string | null;
      submitId?: string | null;
      billingUnits?: number | null;
    },
    data: GatewayReceiptEventDto,
    deliveredAt: Date,
    submitRecordId?: string,
  ) {
    return this.receipt.recordReceiptSegment(message, data, deliveredAt, submitRecordId);
  }

  async aggregateReceiptSegments(
    message: {
      id: string;
      billingUnits?: number | null;
    },
    data: GatewayReceiptEventDto,
    deliveredAt: Date,
    submitRecordId?: string,
    submitId?: string,
  ) {
    return this.receipt.aggregateReceiptSegments(message, data, deliveredAt, submitRecordId, submitId);
  }

  async resolveReceiptMessage(
    data: GatewayReceiptEventDto,
    incomingIdentity?: { account: string; gatewayHost: string; gatewayPort: number; protocol: string; cmppVersion: string },
  ) {
    return this.receipt.resolveReceiptMessage(data, incomingIdentity);
  }

  async recordGatewaySubmitDeadLetter(data: GatewaySubmitDeadLetterDto) {
    return this.retry.recordGatewaySubmitDeadLetter(data);
  }

  async requeueGatewaySubmitDeadLetter(id: string, data: RequeueGatewaySubmitExceptionDto = {}) {
    return this.retry.requeueGatewaySubmitDeadLetter(id, data);
  }

  async recoverStaleGatewaySubmitRequeues(now = new Date()) {
    return this.retry.recoverStaleGatewaySubmitRequeues(now);
  }

  async retryMessageIfAllowed(
    message: {
      id: string;
      tenantId: string;
      batchTaskId: string;
      applicationId?: string | null;
      templateId?: string | null;
      signatureId?: string | null;
      submitId?: string | null;
      messageId: string;
      phoneNumber: string;
      content: string;
      billingUnits: number;
      queuedAt?: Date;
      clientSrcId?: string | null;
      applicationExtension?: string | null;
      carrier?: string | null;
      province?: string | null;
    },
    reason: string,
    sourceSubmitRecordId?: string,
  ) {
    return this.retry.retryMessageIfAllowed(message, reason, sourceSubmitRecordId);
  }

  async chargeAcceptedMessage(message: {
    tenantId: string;
    applicationId?: string | null;
    batchTaskId: string;
    messageId: string;
    phoneNumber: string;
    content: string;
    billingUnits: number;
    unitPrice: number | bigint;
    amountCents: number | bigint;
  }) {
    return this.accounting.chargeAcceptedMessage(message);
  }

  async releaseMessageReservation(
    message: { tenantId: string; batchTaskId: string; messageId: string; amountCents: number | bigint; billingUnits: number },
    remark: string,
  ) {
    return this.accounting.releaseMessageReservation(message, remark);
  }

  async refundMessage(
    message: { tenantId: string; messageId: string; amountCents: number | bigint; billingUnits: number },
    remark: string,
  ) {
    return this.accounting.refundMessage(message, remark);
  }

  async listPendingDownstreamDeliveries(data: GatewayPendingDeliveryQueryDto) {
    return this.downstreamState.listPendingDownstreamDeliveries(data);
  }

  async markDownstreamDeliveryDelivered(id: string) {
    return this.downstreamState.markDownstreamDeliveryDelivered(id);
  }

  async markDownstreamDeliverySent(data: GatewayDownstreamSentDto) {
    return this.downstreamState.markDownstreamDeliverySent(data);
  }

  async acknowledgeDownstreamDelivery(data: GatewayDownstreamAcknowledgedDto) {
    return this.downstreamState.acknowledgeDownstreamDelivery(data);
  }

  async markDownstreamDeliveryFailed(
    id: string,
    errorMessage?: string,
    failureType: GatewayDownstreamFailureType = 'send_failed',
    attempt?: GatewayDownstreamSentDto,
  ) {
    return this.downstreamState.markDownstreamDeliveryFailed(id, errorMessage, failureType, attempt);
  }

  async recordGatewayDownstreamRecoveryStatus(data: GatewayDownstreamRecoveryStatusDto) {
    return this.downstreamState.recordGatewayDownstreamRecoveryStatus(data);
  }

  async requeueDownstreamDelivery(id: string) {
    return this.downstreamState.requeueDownstreamDelivery(id);
  }

  async recoverStaleDownstreamManualRequeues(now = new Date()) {
    return this.downstreamState.recoverStaleDownstreamManualRequeues(now);
  }

  async batchRequeueDownstreamDeliveries(ids: string[]) {
    return this.downstreamState.batchRequeueDownstreamDeliveries(ids);
  }

  async handleUplink(data: GatewayUplinkEventDto) {
    return this.downstreamDelivery.handleUplink(data);
  }

  async claimUplinkMatchCandidate(uplinkMessageId: string, candidateId: string, operatorId?: string) {
    return this.downstreamDelivery.claimUplinkMatchCandidate(uplinkMessageId, candidateId, operatorId);
  }

  async queueAndTryDownstreamDelivery(data: {
    tenantId: string;
    applicationId?: string | null;
    messageRecordId?: string | null;
    messageId?: string | null;
    deliveryType: 'receipt' | 'uplink';
    payload: Record<string, unknown>;
  }) {
    return this.downstreamDelivery.queueAndTryDownstreamDelivery(data);
  }

  async resolveUplinkMatch(
    data: GatewayUplinkEventDto,
    channel: { id: string; srcId?: string | null },
  ): Promise<{
    tenantId?: string;
    applicationId?: string;
    messageRecordId?: string;
    matchStatus: string;
    matchReason: string;
    candidates: UplinkMatchCandidateInput[];
  }> {
    return this.downstreamDelivery.resolveUplinkMatch(data, channel);
  }

  async recordCmppFailureReceipt(
    message: {
      id: string;
      tenantId?: string | null;
      batchTaskId?: string | null;
      applicationId?: string | null;
      messageId: string;
      phoneNumber: string;
      cmppSubmitSequenceId?: string | null;
      cmppSubmitGroupMessageId?: string | null;
    },
    errorCode: string,
    reason: string,
  ) {
    return this.downstreamDelivery.recordCmppFailureReceipt(message, errorCode, reason);
  }

  async postGatewayControl(path: string, payload: unknown) {
    return this.downstreamDelivery.postGatewayControl(path, payload);
  }

  async markUnknownTimeout(data: TimeoutUnknownDto) {
    return this.timeout.markUnknownTimeout(data);
  }

  async markExpiredDownstreamDeliveries(olderThanHours = downstreamPendingTimeoutHours()) {
    return this.timeout.markExpiredDownstreamDeliveries(olderThanHours);
  }

  async runReceiptTimeoutScan() {
    return this.timeout.runReceiptTimeoutScan();
  }
}