import { NextResponse } from 'next/server';
import { and, eq } from 'drizzle-orm';

import { withAuth } from '@/lib/api/helpers';
import { db } from '@/lib/db';
import { systemSettings } from '@/lib/db/schema/system';
import { requestEmailDraft } from '@/lib/services/email-draft.service';
import { parseBody } from '@/lib/api/route-helpers';
import { requestDraftSchema } from '@/lib/validators/ai';
import { CodedError, errorResponse } from '@/lib/errors';

export const POST = withAuth(async (req, ctx) => {
  try {
    // Feature flag check
    const flag = await db.query.systemSettings.findFirst({
      where: and(eq(systemSettings.key, 'ai_email_drafts'), eq(systemSettings.portId, ctx.portId)),
    });
    if (flag?.value !== true) {
      throw new CodedError('NOT_FOUND', {
        internalMessage: 'AI email-draft feature flag disabled for this port',
      });
    }

    const body = await parseBody(req, requestDraftSchema);
    const { jobId } = await requestEmailDraft(ctx.userId, {
      interestId: body.interestId,
      clientId: body.clientId,
      portId: ctx.portId,
      context: body.context,
      additionalInstructions: body.additionalInstructions,
    });

    return NextResponse.json({ jobId }, { status: 202 });
  } catch (error) {
    return errorResponse(error);
  }
});