/**
 * 入库「上�?DO」样例：docx/邮件/模板/WHSU8127240-DO.pdf
 * 用法: pnpm sample:do
 */
import { createHash } from "crypto";
import fs from "fs/promises";
import path from "path";
import { prisma } from "@/services/db";
import { ParsePipeline } from "@/services/parse/pipeline";
import { buildCcDoUploadFormValue } from "@/components/CcDoUploadPanel";
import { extractMailInstructions } from "@/services/parse/split-instructions";
import { sha256 } from "@/utils/hash";

const SUBJECT = "请查�?DO：柜�?WHSU8127240";
const BODY = "Dear,\n请查收附�?DO 文件，谢谢�?;
const MESSAGE_ID = "<sample-do-upload-whsu8127240@local.test>";
const DO_PDF = path.join(
  process.cwd(),
  "docx",
  "邮件",
  "模板",
  "WHSU8127240-DO.pdf",
);

async function attachDo(mailId: bigint): Promise<string> {
  const buf = await fs.readFile(DO_PDF);
  const hash = sha256(buf);
  const filename = "WHSU8127240-DO.pdf";
  const dir = path.join(process.cwd(), "data", "mails", String(mailId));
  await fs.mkdir(dir, { recursive: true });
  const dest = path.join(dir, filename);
  await fs.writeFile(dest, buf);
  const rel = path.relative(process.cwd(), dest).replace(/\\/g, "/");
  await prisma.mailAttachment.create({
    data: {
      mailId,
      filename,
      contentType: "application/pdf",
      sha256: hash,
      path: rel,
      size: buf.length,
      rejected: false,
    },
  });
  return filename;
}

async function main() {
  await fs.access(DO_PDF);

  const rawHash = createHash("sha256")
    .update(`do-upload-ui|${MESSAGE_ID}|${SUBJECT}|WHSU8127240-DO.pdf|v1`)
    .digest("hex");

  const existing = await prisma.mailMessage.findFirst({
    where: { OR: [{ messageId: MESSAGE_ID }, { rawHash }] },
  });

  let mailId: bigint;
  if (existing) {
    await prisma.importCompensation.deleteMany({
      where: { import: { mailId: existing.id } },
    });
    await prisma.containerImport.deleteMany({ where: { mailId: existing.id } });
    await prisma.parseResult.deleteMany({ where: { mailId: existing.id } });
    await prisma.mailAttachment.deleteMany({ where: { mailId: existing.id } });
    await prisma.mailMessage.update({
      where: { id: existing.id },
      data: {
        subject: SUBJECT.slice(0, 512),
        fromAddr: "do-upload@local.test",
        bodyText: BODY,
        status: "FETCHED",
        mailType: "UNKNOWN",
        lastError: null,
        rawHash,
        receivedAt: new Date("2026-04-20T09:00:00.000Z"),
        typeEvidence: { note: "do_upload_ui_sample" },
        version: { increment: 1 },
      },
    });
    mailId = existing.id;
  } else {
    const created = await prisma.mailMessage.create({
      data: {
        messageId: MESSAGE_ID,
        subject: SUBJECT.slice(0, 512),
        fromAddr: "do-upload@local.test",
        bodyText: BODY,
        status: "FETCHED",
        mailType: "UNKNOWN",
        rawHash,
        folder: "INBOX",
        receivedAt: new Date("2026-04-20T09:00:00.000Z"),
        isThreadRoot: true,
        typeEvidence: { note: "do_upload_ui_sample" },
      },
    });
    mailId = created.id;
  }

  const filename = await attachDo(mailId);
  await ParsePipeline.run(mailId);

  const updated = await prisma.mailMessage.findUniqueOrThrow({
    where: { id: mailId },
    include: { parseResult: true, attachments: true },
  });

  const form = buildCcDoUploadFormValue({
    subject: updated.subject,
    body: updated.bodyText,
    filenames: updated.attachments.map((a) => a.filename),
  });
  const units = extractMailInstructions({
    subject: updated.subject,
    body: updated.bodyText || "",
    filenames: updated.attachments.map((a) => a.filename),
  });

  console.log(
    JSON.stringify(
      {
        id: String(updated.id),
        mail_type: updated.mailType,
        status: updated.status,
        attached: filename,
        form,
        ui_kinds: units.map((u) => u.uiKind),
        url: `http://localhost:3100/mails/${updated.id}`,
      },
      null,
      2,
    ),
  );
}

main()
  .catch((e) => {
    console.error(e);
    process.exit(1);
  })
  .finally(async () => {
    await prisma.$disconnect();
  });