import type { Browser, Page } from '@playwright/test';

export const DOC = '/g/monnaie-libre/docs/acte-engagement-certification';
export const TEST_DOC = '/g/essai/docs/acte-engagement-certification';

/** The vote account of the e2e server (serve.sh): Dave's development key. */
export const VOTE_ACCOUNT = 'g1L5EYvvSBaYuQCPW78bHxYcvHfmWAqHYe3Gsrp9SV4kWZaEM';
/** Wallets of the simulated chain (chain-mock.mjs): Alice and Charlie are members, Bob is not. */
export const ALICE = { address: 'g1Pn1geRZnHcVdWdKkoYwQrAARDTXK1D7H3zuXj7GNayT1thu', name: 'Alice' };
export const BOB = { address: 'g1NCrQaFReZcbUW8pKsazfWFCKNSdrTomnDraUMybJc4DFF5g', name: 'Bob' };
export const CHARLIE = { address: 'g1NFWUkPTyZWE77YUrfBKfAhV9W81qmgdD17v1NGhb1EjYFqi', name: 'Charlie' };
export const EVE = { address: 'g1QBoGEqZuxL77pF4rMa25f1cH6HAxwgBq66zZu76JPqsaVgj', name: 'Eve' };

export async function signIn(page: Page, name: string, admin = false) {
  const r = await page.request.post('/api/auth/dev', {
    data: { name, admin },
    headers: { 'x-requested-with': 'libredecision' },
  });
  if (!r.ok()) throw new Error(`dev login ${r.status()}`);
}

export async function person(browser: Browser, name: string, admin = false): Promise<Page> {
  const ctx = await browser.newContext({ locale: 'fr-FR' });
  const page = await ctx.newPage();
  await signIn(page, name, admin);
  return page;
}

/**
 * A fake wallet extension, as duniter-connect offers itself to pages
 * (`window.injectedWeb3`): it lists `accounts` and signs whatever it is given,
 * recording it in `window.__ldSigned`; `window.__ldRefuse = true` makes it refuse;
 * `window.__ldHold = true` makes it wait, as a person who has not answered yet,
 * until `window.__ldAnswer(true | false)` (sign, or refuse).
 * It signs nothing real: the page, in test mode, sends to the simulated node.
 */
export async function wallet(page: Page, accounts: { address: string; name: string }[]) {
  await page.addInitScript((list) => {
    const w = window as unknown as Record<string, unknown> & {
      __ldSigned: unknown[];
      __ldRefuse?: boolean;
      __ldHold?: boolean;
      __ldAnswer?: (yes: boolean) => void;
    };
    w.__ldSigned = [];
    w.injectedWeb3 = {
      'duniter-connect': {
        version: 'e2e',
        enable: async () => ({
          accounts: { get: async () => list, subscribe: () => () => undefined },
          signer: {
            signPayload: async (payload: Record<string, unknown>) => {
              if (w.__ldHold) {
                const yes = await new Promise<boolean>((resolve) => (w.__ldAnswer = resolve));
                if (!yes) throw new Error('Cancelled');
              }
              if (w.__ldRefuse) throw new Error('Cancelled');
              w.__ldSigned.push(payload);
              return { id: w.__ldSigned.length, signature: `0x${'01'.repeat(64)}` };
            },
          },
        }),
      },
    };
  }, accounts);
}

/** What the fake wallet signed, read back (the test extrinsic is JSON as hex). */
export async function signed(page: Page): Promise<{ address: string; dest: string; amount: string; remark: string }[]> {
  return page.evaluate(() =>
    ((window as unknown as { __ldSigned: { method: string }[] }).__ldSigned ?? []).map((p) => {
      const bytes = (p.method.slice(2).match(/../g) ?? []).map((b) => parseInt(b, 16));
      return JSON.parse(new TextDecoder().decode(Uint8Array.from(bytes)));
    }),
  );
}

/** A screenshot for the visual check, when `LD_SHOTS` names a directory (never in the loop). */
export async function shot(page: Page, name: string) {
  const dir = process.env.LD_SHOTS;
  if (dir) await page.screenshot({ path: `${dir}/${name}.png` });
}

/** The control door of the simulated chain, found where the page finds its node. */
export async function chain(page: Page, docPath = DOC) {
  const [, , group] = docPath.split('/');
  const g = await (await page.request.get(`/api/groups/${group}`)).json();
  const d = await (await page.request.get(`/api/docs/${g.docs[0].id}`)).json();
  const node: string = d.vote.chain.testNode;
  const base = node.replace(/\/rpc$/, '');
  return {
    doc: d as { doc: { id: string }; units: { code: string; inForce: { id: string } | null; proposals: { id: string }[] }[] },
    node,
    control: async (what: 'hide' | 'show' | 'release' | 'state' | 'silent' | 'node?down=1' | 'node?down=0') =>
      (await page.request.post(`${base}/control/${what}`)).json(),
  };
}