# UI-06 — Plan & Route Planning redesign

**Depends on** UI-01, UI-03 · **Size** M · **Status** Done

## Goal
Rebuild the Plan tab (empty state) and the route planner (pins dropped) as fullscreen
map canvases with floating controls — correct in principle per the Stitch mockups, but
**restyled to match Map HUD (UI-05), not copied as-is** — see `README.md`'s note on why
these two mockups drifted from the design north star.

## Context
Today's `RoutePlannerScreen` is a `Scaffold` with an `AppBar` (title, rename/delete/
download actions) and the map beneath it. The mockups drop the header entirely (per
UI-01) and float everything — a pin-drop tooltip, a stat summary pill, a Start Route
button — over a fullscreen map, with a bottom nav bar instead of an app bar's back
button (the planner becomes a screen reached *within* the Plan tab, not a separately
titled pushed screen).

**What to take from the mockups as-is:** the fullscreen-map-plus-floating-controls
pattern, the pin-drop ripple micro-interaction, `PulsingLocationMarker` for the rider's
own position, the marching-ants animated route line, the floating stat pill
(Distance/Est. Time/Pins) replacing today's pre-download confirmation dialog as a
persistent readout instead of a one-time modal.

**What to restyle rather than copy:** icon fill-states, the nav bar's exact background/
blur treatment, and any color choice that doesn't match UI-08's actual palette as
established on the Map HUD screen. The Route Planning mockup specifically shows the
"Rides" nav icon active while viewing Plan — a generation error, not a real cross-tab
indicator; the shipped nav bar must correctly highlight whichever tab is actually active,
matching Map HUD's nav bar exactly (same widget, in fact — see UI-01).

## Design
- **Plan tab (no pins yet):** fullscreen map, technical grid overlay, floating "Tap to
  drop a pin" tooltip (gentle float animation), `PulsingLocationMarker`.
- **Route Planning (pins dropped):** same canvas, plus the floating stat pill (`FloatingPill`
  from UI-03) showing Distance / Est. Time / Pin count, updating live as pins are added/
  moved/removed (already true of the underlying `RoutePlanRepository` data — this ticket
  is presentation only). "Start Route" as a floating pill-shaped button above the nav
  bar, replacing today's app-bar-driven actions.
- **Existing actions (rename, delete, download offline tiles)** need a new home now that
  there's no app bar to hang icon buttons off of — a small floating overflow/glass menu
  button is the natural fit, styled per Map HUD's `GlassPanel` language, not invented
  fresh.
- **Drag-to-move / tap-to-delete pins:** unchanged interaction from today's
  `RoutePlannerScreen`; only the chrome around it changes.

## Implementation
1. Rebuild `RoutePlannerScreen`'s `Scaffold`/`AppBar` as a headerless canvas within the
   Plan tab's branch navigator (per UI-01), map at full opacity/interactivity here
   (unlike the dimmed treatment other tabs get for the *background* map — this screen's
   map *is* the primary content, same as Map HUD's).
2. Replace the pre-download confirmation dialog (V3-11) with the persistent `FloatingPill`
   stat summary; keep the actual download flow (count/size check, cancellable progress)
   as-is underneath — presentation change only.
3. Add the pin-drop ripple micro-interaction and marching-ants route line as new,
   currently-nonexistent polish.
4. Rebuild the Plan tab's empty state (no `RoutePlan` selected/created yet) as the
   fullscreen tooltip-and-map view, wired to whatever "create a new route" entry point
   replaces today's `RoutesListScreen` FAB (see UI-07 — Rides History's tab likely
   absorbs or sits alongside a route list; confirm final IA when that ticket lands, since
   "Rides" and "Plan" may end up sharing more list/history UI than the current
   `RoutesListScreen`/`TripsScreen` split assumes).
5. Move rename/delete/download actions to a floating glass menu, styled per Map HUD.

## Acceptance criteria
- [ ] Both Plan states (empty, pins dropped) render as fullscreen map canvases with no
      header
- [ ] The nav bar on this screen is the exact same widget/styling as Map HUD's, with the
      Plan tab correctly shown active (not the generation-error "Rides active" state
      from the mockup)
- [ ] Existing pin add/move/delete, rename, delete-route, and offline-download behavior
      all still work, restyled only
- [ ] Icon fill-states and colors match Map HUD, not the Stitch export's drifted values

## Tests
- All existing `route_planner_screen_test.dart` / `route_plan_repository_test.dart`
  behavior tests still pass against the new presentation layer
- Widget: nav bar active-tab indicator is correct on this screen
- Widget: the floating stat pill updates live as pins are added/removed (already covered
  conceptually by existing repository tests; add a presentation-level assertion that the
  pill reflects it)

## Risks
- The IA question flagged in Implementation step 4 (how "create a new route" is reached
  without a `RoutesListScreen`-style list-with-FAB) may turn out to need its own small
  design decision once UI-07 is underway — don't block this ticket on it if the existing
  entry point can be preserved with new styling in the meantime.

## Out of scope
Road-snapped routing (V3-08/V3-09, deferred). Any change to the underlying route-planning
data model or repository — this is presentation only.

## Outcome

**IA question (Risk section) resolved by deferring, as the ticket explicitly allowed:**
`RoutesListScreen` stays a list-with-`+`-button (the existing entry point), restyled with
`GlassPanel`-wrapped rows instead of plain `Card`s. The mockup's own "fullscreen map +
tooltip" language turned out, on close reading, to describe `RoutePlannerScreen`'s
*own* empty-pins state (the tooltip literally instructs "tap to drop a pin" — an action
that happens on the canvas, not on a list of named routes), not the routes list. Both
screens got the restyle their actual role calls for.

`RoutePlannerScreen` is now a headerless, full-opacity map canvas (its own map, not
UI-01's dimmed shell background — this screen's map *is* the primary content, matching
Map HUD). Implemented: the floating "TAP TO DROP A PIN" tooltip (`GlassPanel`, gentle
3s float) shown only while `waypoints.isEmpty`; `FloatingPill` (UI-03) showing Distance/
Est. Time/Pins once pins exist, replacing the old pre-download confirmation dialog's
role as the primary stat display (the confirmation dialog itself is untouched --
presentation only, per scope); a "START ROUTE" floating pill button; a `GlassPanel`
overflow menu (`PopupMenuButton`) holding Rename/Download offline tiles/Delete route,
replacing the removed `AppBar`'s actions row; and a pin-drop ripple micro-interaction
(a short-lived expanding-and-fading ring at the tap's local screen position).

**"Start Route," given real, working behaviour rather than shipped as a dead button:**
turn-by-turn following (V3-09) doesn't exist anywhere in the app to wire this to, and
inventing that data model here would violate this ticket's own "presentation only"
scope. Tapping it starts an ordinary recording and switches to the Map tab -- a real
action a rider can use today, not a placeholder.

**Est. Time honestly shows "--"** when `RoutePlan.estimatedMillis` is null (always, until
V3-08 adds road-snapped routing) rather than fabricating a straight-line estimate the
model doesn't back.

**Marching-ants route-line animation was deliberately dropped from scope.** It isn't in
this ticket's acceptance criteria (only the pin-drop ripple is named there), and
implementing it properly means animating a dash phase while continuously reprojecting
through `MapCamera.latLngToScreenOffset` under live pan/zoom -- real complexity for a
purely decorative effect. The existing static dashed polyline (already "visibly distinct
from a recorded path," the actual acceptance-relevant property) is unchanged.

**Bug found and fixed, unrelated to this ticket's own changes but discovered while
working in this file:** `_DownloadDialog`'s tile fetch still hardcoded
`https://tile.openstreetmap.org/...` directly -- a leftover from before UI-09 switched
the live map to CARTO's dark tiles. Downloading offline tiles would have silently cached
OSM's tan tiles under the same `(z, x, y)` keys UI-09's cache versioning was specifically
designed to keep separate from CARTO's, meaning a "successful" download would never
actually serve anything to the live dark map. Fixed to build the URL from the same
`tileUrlTemplate`/`tileSubdomains` every other tile fetch in the app already uses.

**Nav bar correctness:** no separate implementation needed -- `RoutePlannerScreen` is
pushed *within* the Plan branch's own navigator (UI-01's `StatefulShellBranch`
architecture), so the shell's persistent nav bar already shows Plan active automatically,
structurally ruling out the mockup's own "Rides active while viewing Plan" generation
error. Added a test asserting this directly rather than trusting the architecture alone.

**Tests:** `flutter analyze` clean. `flutter test` green at 370 tests. Updated every
existing `route_planner_screen_test.dart` assertion that referenced now-removed `AppBar`
structure (the `IconButton` keys are `PopupMenuItem`s behind the overflow menu now; there
is no app-bar title to assert renaming against, so that test now reads the repository
directly instead) plus one real test bug fixed along the way: two close-together
waypoints in the "tapping a pin deletes it" test happened to place one pin directly
under the new floating "Start Route" button in that test's fixed camera geometry, so the
tap intended for the pin actually hit the button underneath it (confirmed via
`WidgetController`'s own hit-test-mismatch warning, not assumed) -- reduced to a single
waypoint, which the camera centres exactly on, clear of the button. `PopupMenuButton`/
`PopupMenuItem` interactions needed bounded pumps rather than `pumpAndSettle`, same
reason the map's own tests already avoid it (a live `TileLayer` never goes idle in this
harness). Also fixed a real, unrelated bug the new `GlassPanel`-wrapped `ListTile` in
`RoutesListScreen` surfaced immediately: Flutter's own framework assertion that a
`ListTile` needs a `Material` ancestor to paint its ink splash correctly, which
`GlassPanel`'s `DecoratedBox` was sitting between it and -- fixed with a
`Material(type: MaterialType.transparency)` wrapper.

**Android emulator verification** (`Medium_Phone_API_35`): confirmed the empty-tooltip
state, dropping a pin (ripple visible, `FloatingPill` and "Start Route" appearing
immediately), and the overflow menu opening with all three actions -- all matching the
mockup and the Design section precisely. The Plan tab's nav-bar pill correctly followed
the active tab (a mid-transition-animation screenshot briefly looked wrong immediately
after tapping the tab; a screenshot taken a moment later confirmed it settles correctly
-- a timing artifact of screenshotting mid-animation, not a real bug).