export async function onRequestPost(context: RequestContext) {
  const { learned, whyBanned, whyUnban } = context.data.body;

  if (
    typeof learned !== "string" ||
    typeof whyBanned !== "string" ||
    typeof whyUnban !== "string" ||
    !learned.length ||
    learned.length > 2000 ||
    !whyBanned.length ||
    whyBanned.length > 500 ||
    !whyUnban.length ||
    whyUnban.length > 2000
  )
    return new Response(
      '{"error":"One or more fields are missing or invalid"}',
      {
        headers: {
          "content-type": "application/json",
        },
        status: 400,
      },
    );

  const { current_user: currentUser } = context.data;

  if (!currentUser.email)
    return new Response('{"error":"No email for this session"}', {
      headers: {
        "content-type": "application/json",
      },
      status: 403,
    });

  const existingAppeals = await context.env.DATA.list({
    prefix: `appeal_${currentUser.id}`,
  });
  const existingBlockedAppeal = await context.env.DATA.get(
    `blockedappeal_${currentUser.id}`,
  );

  if (
    existingBlockedAppeal ||
    existingAppeals.keys.find(
      (appeal) => (appeal.metadata as { [k: string]: any })?.open,
    )
  )
    return new Response('{"error":"Appeal already submitted"}', {
      headers: {
        "content-type": "application/json",
      },
      status: 403,
    });

  if (await context.env.DATA.get(`appealban_${currentUser.id}`)) {
    await context.env.DATA.put(`blockedappeal_${currentUser.id}`, "1", {
      metadata: { email: currentUser.email },
    });

    return new Response(null, {
      status: 204,
    });
  }

  const appealId = `${currentUser.id}${Date.now()}${crypto
    .randomUUID()
    .replaceAll("-", "")}`;

  await context.env.DATA.put(
    `appeal_${appealId}`,
    JSON.stringify({
      ban_reason: whyBanned,
      createdAt: Date.now(),
      learned,
      id: appealId,
      reason_for_unban: whyUnban,
      user: {
        email: currentUser.email,
        id: currentUser.id,
        username: currentUser.username,
      },
    }),
    {
      expirationTtl: 94608000,
    },
  );

  await context.env.D1.prepare(
    "INSERT INTO appeals (created_at, id, open, user) VALUES (?, ?, ?, ?)",
  )
    .bind(Date.now(), appealId, 1, currentUser.id)
    .run();

  await fetch(context.env.APPEALS_WEBHOOK, {
    body: JSON.stringify({
      embeds: [
        {
          title: "Appeal Submitted",
          color: 3756250,
          description: `View this appeal at https://carcrushers.cc/mod-queue?id=${appealId}&type=appeal`,
          fields: [
            {
              name: "Submitter",
              value: `${currentUser.username} (${currentUser.id})`,
            },
          ],
        },
      ],
    }),
    headers: {
      "content-type": "application/json",
    },
    method: "POST",
  });

  return new Response(null, {
    status: 204,
  });
}