Files
OpenFrontIO/src/client
Evan bcc453e8cf Add modal URL router (#modal=name&tab=key) (#3924)
## Description

Adds a modal URL router so modals can be opened, deep-linked, and
bookmarked via the hash. URLs of the form `#modal=<name>&tab=<key>&...`
open the named modal and pass remaining keys as args to `onOpen`. The
reverse direction also syncs: opening a modal via the UI updates the
URL, closing it clears the hash, and switching tabs updates `&tab=`.

Builds on the BaseModal refactor from #3923.

### What's new

**`ModalRouter.ts`** — small registry + two-way sync helper.
- `register(name, { tag, pageId? })` declares a modal as router-managed
- `routeFromHash()` parses `#modal=...` and dispatches to
`modal.open(args)`
- `syncOpened/syncClosed/syncTab` push state back into the URL via
`history.replaceState` (no history entries)
- A `routingFromUrl` flag prevents URL→modal→URL feedback loops
- Unknown modal names silently strip the hash

**`BaseModal`** — opt-in URL sync via a `routerName` property.
- When set, BaseModal calls into
`modalRouter.syncOpened/syncClosed/syncTab` from `open` / `close` /
`setActiveTab`
- Modals that own their own URL state (lobby modals) just leave
`routerName` undefined

**`Main.ts`** — registers all routable modals and wires the router.
- `handleUrl()`: adds a `modalRouter.routeFromHash()` branch after the
path-based lobby join
- `onHashUpdate`: when the hash is router-managed, routes via the router
instead of tearing down lobby state

### Routable modals

13 inline modals: store, settings, leaderboard, clan, account, help,
news, language, single-player, ranked, troubleshooting,
territory-patterns, flag-input.

Excluded by design: join-lobby, host-lobby (own URL state via
`/game/<id>`), matchmaking (no URL state).

### Example uses

- Deep link to store flags tab: `/#modal=store&tab=flags`
- Settings keybinds tab: `/#modal=settings&tab=keybinds`
- Cosmetics.ts now redirects to `#modal=store&tab=packs` when a
hard-currency purchase fails for insufficient plutonium (after the
alert), so users can top up directly

### URL behavior

- `replaceState` everywhere — no history entries added when modals open
/ close / switch tabs
- Browser back/forward still works for the existing path-based game flow
- `hashchange` events are router-aware so external hash changes (back
button, manual edit) correctly switch between routed modals without
tearing down lobby state

## Please complete the following:

- [x] I have added screenshots for all UI updates _(no visual changes;
smoke-tested in dev)_
- [x] I process any text displayed to the user through translateText()
and I've added it to the en.json file _(no new user-visible strings)_
- [ ] I have added relevant tests to the test directory _(no test
coverage; manually tested URL load, UI open, tab switch, close,
hashchange, insufficient-plutonium redirect)_
- [x] I confirm I have thoroughly tested these changes and take full
responsibility for any bugs introduced

## Please put your Discord username so you can be contacted if a bug or
regression is found:

DISCORD_USERNAME
2026-05-14 16:49:44 -07:00
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