/** Add scan GPS and transfer metadata, preserving all existing schema fields.
 * DRY RUN: node --env-file=.env.local node_modules/tsx/dist/cli.mjs scripts/migrations/2026-10-17-clock-scan-location.mts
 * APPLY: append --apply --backup /absolute/path/clock-events-schema.json
 * Only schema changes; never changes worker, event or hour records.
 */
import PocketBase from "pocketbase";
import { writeFile, mkdir } from "node:fs/promises";
import { dirname } from "node:path";
const pb = new PocketBase(process.env.NEXT_PUBLIC_POCKETBASE_URL);
if (process.env.POCKETBASE_ADMIN_TOKEN) pb.authStore.save(process.env.POCKETBASE_ADMIN_TOKEN);
else await pb.collection("_superusers").authWithPassword(process.env.POCKETBASE_ADMIN_EMAIL!,process.env.POCKETBASE_ADMIN_PASSWORD!);
const collection = await pb.collections.getOne("clock_events");
const additions = [
  {name:"has_location",type:"bool"},
  {name:"latitude",type:"number",min:-90,max:90},
  {name:"longitude",type:"number",min:-180,max:180},
  {name:"location_accuracy_m",type:"number",min:0},
  {name:"is_transfer",type:"bool"},
  {name:"previous_unclosed_in",type:"relation",collectionId:collection.id,maxSelect:1,cascadeDelete:false},
  {name:"supervisor_note",type:"text",max:2000},
  {name:"office_note",type:"text",max:2000},
  {name:"office_resolved_at",type:"date"},
  {name:"office_resolved_by",type:"text",max:128},
];
for (const field of additions) {
  const existing = collection.fields.find((item:{name:string})=>item.name===field.name);
  if (existing && existing.type !== field.type) throw new Error(`Unexpected type for ${field.name}`);
}
const missing = additions.filter(field=>!collection.fields.some((item:{name:string})=>item.name===field.name));
console.log(JSON.stringify({mode:process.argv.includes("--apply")?"apply":"dry-run",collection:collection.name,addFields:missing.map(field=>field.name)}));
if (process.argv.includes("--apply") && missing.length) {
  const backup = process.argv[process.argv.indexOf("--backup")+1];
  if (!process.argv.includes("--backup") || !backup) throw new Error("--apply requires --backup PATH");
  await mkdir(dirname(backup),{recursive:true});
  await writeFile(backup,JSON.stringify(collection,null,2),{flag:"wx"});
  await pb.collections.update(collection.id,{fields:[...collection.fields,...missing]});
  const verified = await pb.collections.getOne(collection.id);
  for (const field of additions) if (!verified.fields.some((item:{name:string;type:string})=>item.name===field.name&&item.type===field.type)) throw new Error(`Schema verification failed: ${field.name}`);
  console.log("Verified additive schema update. No attendance records were changed.");
}