/**
 * Seed a demo dataset: one client, one project with default columns, an owner,
 * a client manager, and a few cards.
 *
 * Idempotent — re-running updates the existing records rather than duplicating
 * them, so it is safe to run between test runs.
 *
 * Run with: npm run seed   (PocketBase must be running)
 */

import PocketBase from "pocketbase";

import { buildColumnRecords, assertColumnInvariants } from "../src/lib/columns/seed";
import { SPACING } from "../src/lib/ordering/fractional";
import { nextCardNumber } from "../src/lib/cards/number";

const PB_URL = process.env.NEXT_PUBLIC_PB_URL ?? "http://127.0.0.1:8090";

export const DEMO = {
  clientSlug: "wf",
  projectSlug: "wfdash-webapp",
  ownerEmail: "owner@example.com",
  ownerPassword: "owner-password-123",
  managerEmail: "manager@wf.example.com",
  managerPassword: "manager-password-123",
};

async function upsert<T extends { id: string }>(
  pb: PocketBase,
  collection: string,
  filter: string,
  data: Record<string, unknown>
): Promise<T> {
  const existing = await pb
    .collection(collection)
    .getFirstListItem<T>(filter)
    .catch(() => null);

  if (existing) {
    return pb.collection(collection).update<T>(existing.id, data);
  }
  return pb.collection(collection).create<T>(data);
}

async function main() {
  const email = process.env.PB_SUPERUSER_EMAIL;
  const password = process.env.PB_SUPERUSER_PASSWORD;

  if (!email || !password) {
    throw new Error(
      "PB_SUPERUSER_EMAIL and PB_SUPERUSER_PASSWORD must be set. Copy .env.example to .env.local and export them."
    );
  }

  const pb = new PocketBase(PB_URL);
  pb.autoCancellation(false);
  await pb.collection("_superusers").authWithPassword(email, password);

  const client = await upsert<{ id: string }>(
    pb,
    "clients",
    `slug = "${DEMO.clientSlug}"`,
    {
      name: "WF",
      slug: DEMO.clientSlug,
      brand_color: "#3b82f6",
      active: true,
    }
  );

  const project = await upsert<{ id: string }>(
    pb,
    "projects",
    `slug = "${DEMO.projectSlug}"`,
    {
      client: client.id,
      name: "WFDash Web App",
      slug: DEMO.projectSlug,
      description: "Operations web application.",
      status: "active",
      color: "#3b82f6",
      repo_owner: "David",
      repo_name: "WFDASH-WEBAPP",
    }
  );

  const columnInputs = buildColumnRecords(project.id);
  assertColumnInvariants(columnInputs);

  const columns: Record<string, string> = {};
  for (const input of columnInputs) {
    const record = await upsert<{ id: string }>(
      pb,
      "columns",
      `project = "${project.id}" && name = "${input.name}"`,
      { ...input }
    );
    columns[input.name] = record.id;
  }

  await upsert(pb, "users", `email = "${DEMO.ownerEmail}"`, {
    email: DEMO.ownerEmail,
    password: DEMO.ownerPassword,
    passwordConfirm: DEMO.ownerPassword,
    name: "Dave",
    role: "owner",
    verified: true,
  });

  await upsert(pb, "users", `email = "${DEMO.managerEmail}"`, {
    email: DEMO.managerEmail,
    password: DEMO.managerPassword,
    passwordConfirm: DEMO.managerPassword,
    name: "WF Manager",
    role: "client_manager",
    client: client.id,
    verified: true,
  });

  const cards = [
    { title: "Quote attachments split", column: "In Progress", priority: "high" },
    { title: "Stock inline quantity editing", column: "To Do", priority: "medium" },
    { title: "Delivery note grouping", column: "Done", priority: "low" },
  ];

  // Pre-fetch existing numbers so re-seeding keeps the original numbering
  // and only fills in the gap when a card is missing.
  const existingNumbers = (
    await pb
      .collection("cards")
      .getFullList({ filter: `project = "${project.id}"`, fields: "number" })
  ).map((c) => Number(c.number) || 0);

  let position = SPACING;
  for (const card of cards) {
    const cardNumber = nextCardNumber(existingNumbers);
    existingNumbers.push(cardNumber);

    await upsert(
      pb,
      "cards",
      `project = "${project.id}" && title = "${card.title}"`,
      {
        project: project.id,
        column: columns[card.column],
        title: card.title,
        description: "",
        position,
        priority: card.priority,
        created_by_role: "owner",
        accepted: true,
        archived: false,
        number: cardNumber,
      }
    );
    position += SPACING;
  }

  console.log("Seeded:");
  console.log(`  client   ${client.id} (${DEMO.clientSlug})`);
  console.log(`  project  ${project.id} (${DEMO.projectSlug})`);
  console.log(`  owner    ${DEMO.ownerEmail} / ${DEMO.ownerPassword}`);
  console.log(`  manager  ${DEMO.managerEmail} / ${DEMO.managerPassword}`);
}

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