/**
 * Build-time release notes for the "what's new" screen.
 *
 * The screen appears once after unlock when CURRENT_NOTICE_ID differs from the
 * last notice the user acknowledged. The app version is display-only: routine
 * patch releases must not replay unchanged notes.
 *
 * To ship an important/breaking changelog: update CURRENT_NOTES and deliberately
 * change CURRENT_NOTICE_ID. "Continue" stores that ID and suppresses the screen
 * until the next intentional notice revision.
 */

declare const __PEACH_VERSION__: string;

export interface ReleaseNote {
  heading: string;
  body: string;
  breaking?: boolean;
}

export const PEACH_VERSION: string = typeof __PEACH_VERSION__ !== "undefined"
  ? __PEACH_VERSION__
  : "0.0.0";

export const CURRENT_NOTICE_ID = "vault-v4-android-minimum-2026-09-05";

export const CURRENT_NOTES: ReleaseNote[] = [
  {
    heading: "Passphrases & long passwords",
    body: "Peach now supports passphrases and passwords up to 256 characters. Existing vaults remain fully readable.",
  },
  {
    heading: "Update your Android app first",
    body: "Vault V4 is not readable by Peach Android before v2.15.3. Open Peach on Android → Settings → Update, or visit peachpasswords.com to download the latest version. Export a backup on Android before updating.",
    breaking: true,
  },
];

export function hasReleaseNotes(): boolean {
  return CURRENT_NOTES.length > 0;
}

const WHATS_NEW_SEEN_KEY = "peach_whats_new_seen";

export async function shouldShowWhatsNew(): Promise<boolean> {
  if (!hasReleaseNotes()) return false;
  try {
    const seen = await chrome.storage.local.get(WHATS_NEW_SEEN_KEY);
    const last = seen[WHATS_NEW_SEEN_KEY];
    // A fresh install has no stored version — there is nothing to catch up
    // on, so the screen never appears. It only fires on an upgrade from a
    // previously-seen version. Mirrors Android's WhatsNewScreen gate.
    if (last === undefined) return false;
    if (typeof last === "string" && /^\d+\.\d+\.\d+$/.test(last)) {
      // Versions through v5.2.4 stored the app version. Any such value proves
      // this same static V4 notice was already acknowledged; migrate silently.
      await chrome.storage.local.set({ [WHATS_NEW_SEEN_KEY]: CURRENT_NOTICE_ID });
      return false;
    }
    return last !== CURRENT_NOTICE_ID;
  } catch {
    return false;
  }
}

export async function markWhatsNewSeen(): Promise<void> {
  try {
    await chrome.storage.local.set({ [WHATS_NEW_SEEN_KEY]: CURRENT_NOTICE_ID });
  } catch {
    // best-effort — the screen just won't reshow, which is the lesser evil
  }
}