// What the vote under an article and the basket share: one way to send votes
// to the server (managed groups), and the news of what entered into force.

import { api, ApiError } from './api';
import type { DocState } from './doc.svelte';
import { i18n, t, type Key } from './i18n/index.svelte';
import { toasts } from './toast.svelte';
import type { Entered } from './types';

/** A line of a vote: one version, for or against, or null to withdraw one's vote. */
export interface Line {
  proposalId: string;
  choice: 'for' | 'against' | null;
}

/** Cents of Ğ1, as the person reads them: « 0,1 » in French. */
export function g1Amount(cents: number): string {
  return i18n.number(cents / 100);
}

export function errorText(e: unknown): string {
  return t(`error.${e instanceof ApiError ? e.code : 'internal'}` as Key);
}

/** Tells, one by one, the texts that just entered into force. */
export function announce(doc: DocState, entered: Entered[]) {
  for (const e of entered) {
    const u = doc.unit(e.unitId);
    const title = u?.inForce?.title ?? u?.code ?? '';
    const key = e.kind === 'remove' ? 'vote.entered.remove' : e.kind === 'inertia' ? 'vote.entered.inertia' : 'vote.entered';
    toasts.show(t(key, { title }), 'rise', 6000);
  }
}

/** In a managed group: every line in one write on the server. Returns how many were written. */
export async function voteDirect(doc: DocState, lines: Line[]): Promise<number> {
  const id = doc.view?.doc.id;
  if (!id) return 0;
  const r = await api.post<{ count: number; entered: Entered[] }>(`/docs/${id}/votes`, { lines });
  await doc.reload();
  announce(doc, r.entered);
  return r.count;
}