/**
 * One-shot migration: create the `giellie_chats` collection (Giellie agent
 * chat history — ONE collection; transcript lives in the `messages` json).
 *
 * Run with:
 *
 *     npm run pb:migrate:giellie-chats
 *
 * Reads/writes go through the server's admin client; the API rules below
 * only matter for direct PB access: a user can list/view their own chats,
 * nobody can create/update/delete via the public API.
 *
 * Idempotent — exits early if the collection exists.
 * Rollback: delete the `giellie_chats` collection in the PB admin UI.
 */
import "./_env-loader";
import PocketBase from "pocketbase";

const PB_URL = process.env.NEXT_PUBLIC_POCKETBASE_URL || "http://127.0.0.1:8090";
const ADMIN_EMAIL = process.env.PB_ADMIN_EMAIL;
const ADMIN_PASSWORD = process.env.PB_ADMIN_PASSWORD;

async function main() {
  if (!ADMIN_EMAIL || !ADMIN_PASSWORD) {
    throw new Error("Set PB_ADMIN_EMAIL and PB_ADMIN_PASSWORD (e.g. from .env.local).");
  }
  const pb = new PocketBase(PB_URL);
  await pb.collection("_superusers").authWithPassword(ADMIN_EMAIL, ADMIN_PASSWORD);
  console.log(`[giellie-chats] Authenticated against ${PB_URL}`);

  const all = await pb.collections.getFullList();
  if (all.find((c) => c.name === "giellie_chats")) {
    console.log("[giellie-chats] giellie_chats already exists — skipping.");
    return;
  }
  const users = all.find((c) => c.name === "users");
  if (!users) throw new Error("users collection not found");

  await pb.collections.create({
    name: "giellie_chats",
    type: "base",
    listRule: "user = @request.auth.id",
    viewRule: "user = @request.auth.id",
    createRule: null,
    updateRule: null,
    deleteRule: null,
    fields: [
      {
        name: "user",
        type: "relation",
        required: true,
        collectionId: users.id,
        maxSelect: 1,
        cascadeDelete: true,
      },
      // Explicit max: PB treats max 0 as a 5000-char cap, not unlimited.
      { name: "title", type: "text", required: false, max: 200 },
      { name: "messages", type: "json", required: false, maxSize: 5000000 },
      { name: "pending_action", type: "json", required: false, maxSize: 1000000 },
      {
        name: "attachments",
        type: "file",
        required: false,
        maxSelect: 50,
        maxSize: 10485760,
        mimeTypes: [],
      },
      { name: "created", type: "autodate", onCreate: true, onUpdate: false },
      { name: "updated", type: "autodate", onCreate: true, onUpdate: true },
    ],
    indexes: ["CREATE INDEX idx_giellie_chats_user ON giellie_chats (user, updated)"],
  });
  console.log("[giellie-chats] Created giellie_chats collection.");
}

main().catch((e) => {
  console.error(e);
  process.exit(1);
});