import type { SanitizedConfig } from "payload";
import { getPayload } from "payload";

export const script = async (config: SanitizedConfig) => {
  const payload = await getPayload({ config });

  payload.logger.info("[Generate Mission] Starting next mission template generation...");

  const latest = await payload.find({
    collection: "missions",
    where: { operationType: { equals: "main" } },
    sort: "-createdAt",
    limit: 1,
    depth: 0,
  });

  const source = latest.docs[0];
  if (!source) {
    payload.logger.info(
      '[Generate Mission] No "main" operation mission found; skipping. Create the first one manually.',
    );
    process.exit(0);
  }

  // Same logic as the Missions collection startDateTime default: the upcoming
  // Saturday at 20:00, always at least a week out.
  const today = new Date();
  const day = today.getDay();
  const diff = (6 - day) % 7;
  const nextSaturday = new Date(today);
  nextSaturday.setDate(today.getDate() + diff + 7);
  nextSaturday.setHours(20, 0, 0, 0);

  const dateStamp = [
    nextSaturday.getFullYear(),
    String(nextSaturday.getMonth() + 1).padStart(2, "0"),
    String(nextSaturday.getDate()).padStart(2, "0"),
  ].join("");

  const codeName = `${source.codeName}-${dateStamp}`;

  const existing = await payload.find({
    collection: "missions",
    where: { codeName: { equals: codeName } },
    limit: 1,
    depth: 0,
  });

  if (existing.docs.length > 0) {
    payload.logger.info(
      `[Generate Mission] Mission with codeName "${codeName}" already exists; skipping.`,
    );
    process.exit(0);
  }

  const {
    id: _sourceId,
    createdAt: _sourceCreatedAt,
    updatedAt: _sourceUpdatedAt,
    ...template
  } = source;

  const mission = await payload.create({
    collection: "missions",
    data: {
      ...template,
      codeName,
      classification: {
        ...template.classification,
        startDateTime: nextSaturday.toISOString(),
      },
      ownershipAndStatus: {
        ...template.ownershipAndStatus,
        status: "Concept",
      },
    },
    overrideAccess: true,
    depth: 0,
  });

  payload.logger.info(
    `[Generate Mission] Created next mission template: id=${mission.id} name="${mission.name}" codeName="${mission.codeName}" startDateTime=${mission.classification.startDateTime}`,
  );
  process.exit(0);
};