import { ForwardJobData, IndexJobData } from '@tower/types';
import { createLogger } from '@tower/logger';

const logger = createLogger('approve-message');

export interface ApproveMessageResult {
  forwardJobs: ForwardJobData[];
  indexDoc: IndexJobData;
}

/**
 * Approve a PENDING message: mark APPROVED in a transaction, create an Approval row,
 * and return the forward jobs + index document.
 * Returns null if the message is not in PENDING state or is already approved.
 */
export async function approveMessage(
  messageId: string,
  tenantId: string,
  adminId: string,
  prisma: any,
  targetGroupIds?: string[],
): Promise<ApproveMessageResult | null> {
  const message = await prisma.message.findUnique({
    where: { id: messageId },
    include: {
      approval: true,
      sourceGroup: {
        include: {
          syncRoutesFrom: {
            where: { isActive: true, targetGroup: { isActive: true } },
            include: { targetGroup: { select: { platformId: true, isActive: true, accountId: true } } },
          },
        },
      },
    },
  });

  if (!message) return null;
  if (message.status !== 'PENDING') return null;
  if (message.approval) return null;

  let approved = false;
  await prisma.$transaction(async (tx: any) => {
    const updated = await tx.message.updateMany({
      where: { id: message.id, status: 'PENDING' },
      data: { status: 'APPROVED' },
    });
    if (updated.count === 0) return;
    approved = true;
    await tx.approval.create({
      data: {
        tenantId: message.tenantId,
        messageId: message.id,
        adminId,
        decision: 'APPROVED',
      },
    });
  });

  if (!approved) return null;

  const forwardJobs: ForwardJobData[] = (message.sourceGroup?.syncRoutesFrom ?? [])
    .filter((route: any) => route.targetGroup != null)
    .filter((route: any) => !targetGroupIds || targetGroupIds.includes(route.targetGroupId))
    .map((route: any) => ({
      tenantId: message.tenantId,
      messageId: message.id,
      content: message.content,
      sourceGroupName: message.sourceGroup.name,
      senderName: message.senderName ?? undefined,
      toGroupJid: route.targetGroup.platformId,
      fromAccountId: route.targetGroup.accountId ?? message.sourceGroup.accountId ?? '',
    }));

  const indexDoc: IndexJobData = {
    tenantId: message.tenantId,
    messageId: message.id,
    content: message.content,
    senderName: message.senderName ?? null,
    sourceGroupId: message.sourceGroupId,
    sourceGroupName: message.sourceGroup.name,
    tags: message.tags ?? [],
    platform: message.platform,
    approvedAt: new Date().toISOString(),
  };

  return { forwardJobs, indexDoc };
}