import { BusError } from '../../bus/src/broker.mjs';
import { outcome, all } from './vikunja.mjs';
// Startup checks from addendum B sections 2 and 3, run before the first poll. Any failure refuses
// the business: the adapter then answers every task verb for it with the refusal code.
export const TESTED_VERSION = 'v2.7.0';
export const BUCKETS = ['todo', 'in-progress', 'in-review', 'blocked', 'done'];
// The addendum used "one more than the highest task id the sync bot sees". On a shared instance
// that id can belong to a project the bot can't read, which answers 403, not 404. Task ids are
// int64, so the largest int32 is missing on any instance this stack will meet.
export const MISSING = 2147483647;
const refuse = (code) => {
  throw new BusError(code);
};
const expect = (r, status, code) => {
  if (r.status !== status) refuse(r.status === 401 ? 'tracker-unauthorized' : r.status === 0 || r.status >= 500 ? 'tracker-unavailable' : code);
};
export function parseVersion(v) {
  const m = /^v?(\d+)\.(\d+)\.(\d+)/.exec(v ?? '');
  return m ? m.slice(1, 4).map(Number) : null;
}
export async function startup(ctx) {
  const info = await ctx.call(null, 'GET', '/info');
  expect(info, 200, 'tracker-unexpected');
  const v = parseVersion(info.json?.version);
  if (!v || v[0] !== 2 || v[1] < 4) refuse('tracker-version');
  const max = info.json?.max_items_per_page;
  ctx.per = Number.isSafeInteger(max) && max > 0 ? Math.min(50, max) : 50;
  ctx.version = info.json.version;
  ctx.untested = info.json.version !== TESTED_VERSION;
  // expires_at, checked locally: Vikunja accepts a mint with a past expiry (probes.md, O).
  const mine = ctx.credentials
    .status()
    .filter((s) => s.service === 'vikunja' && s.instance.startsWith(ctx.business + '/'));
  if (!mine.some((s) => s.instance === ctx.business + '/@sync')) refuse('credential-unavailable');
  if (mine.some((s) => s.state === 'expired')) refuse('credential-expired');
  // Sync identity: the control must pass and the write probe must be refused by scope.
  expect(await ctx.sync('GET', `/projects/${ctx.project}`), 200, 'tracker-project');
  await install(ctx);
  const probe = await ctx.sync('PATCH', `/tasks/${MISSING}`, { body: {} });
  if (probe.status === 404 || probe.status === 403 || outcome(probe) === 'ok') refuse('scope-too-broad');
  expect(probe, 401, 'tracker-unexpected');
  for (const [role, r] of Object.entries(ctx.roles)) {
    const control = await ctx.as(role, 'GET', `/tasks/${MISSING}`);
    if (control.status !== 404 || control.json?.code !== 4002) {
      expect(control, 404, 'tracker-unexpected');
      refuse('tracker-unexpected');
    }
    const probes = [['DELETE', `/tasks/${MISSING}`, undefined]];
    if (r.definition !== 'pm') probes.push(['POST', `/tasks/${MISSING}/labels`, { label_id: 1 }]);
    for (const [method, path, body] of probes) {
      const p = await ctx.as(role, method, path, { body });
      if (p.status === 404 || p.status === 403 || outcome(p) === 'ok') refuse('scope-too-broad');
      if (p.status !== 401) refuse(p.status === 0 || p.status >= 500 ? 'tracker-unavailable' : 'tracker-unexpected');
    }
  }
  // Every configured label must be visible to the pm, or label writes would answer 403.
  if (ctx.labels.size) {
    const seen = await all(ctx.asCall(ctx.pm), null, '/labels', {}, ctx.per);
    if (!seen.ok) refuse(seen.r.status === 401 ? 'tracker-unauthorized' : 'tracker-unavailable');
    const ids = new Set(seen.items.map((l) => l?.id));
    if ([...ctx.labels.keys()].some((id) => !ids.has(id))) refuse('tracker-labels');
  }
}
// Install checks: one manual kanban view, the five buckets once each, done and default wired.
async function install(ctx) {
  const views = await all(ctx.syncCall, null, `/projects/${ctx.project}/views`, {}, ctx.per);
  if (!views.ok) refuse('tracker-unavailable');
  const kanban = views.items.filter((x) => x?.view_kind === 'kanban');
  if (kanban.length !== 1 || kanban[0].bucket_configuration_mode !== 'manual') refuse('tracker-install');
  const k = kanban[0];
  const buckets = await all(ctx.syncCall, null, `/projects/${ctx.project}/views/${k.id}/buckets`, {}, ctx.per);
  if (!buckets.ok) refuse('tracker-unavailable');
  const ids = {};
  for (const title of BUCKETS) {
    const hits = buckets.items.filter((b) => b?.title === title);
    if (hits.length !== 1 || !Number.isSafeInteger(hits[0].id) || hits[0].id < 1) refuse('tracker-install');
    ids[title] = hits[0].id;
  }
  if (k.done_bucket_id !== ids.done || k.default_bucket_id !== ids.todo) refuse('tracker-install');
  ctx.view = {
    id: k.id,
    done: ids.done,
    todo: ids.todo,
    ids,
    titles: Object.fromEntries(Object.entries(ids).map(([t, id]) => [id, t])),
  };
}