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# feat(#1420): dark-tile provider picker in customizer (4 variants) Closes #1420. ## What Operator pick: don't force a single dark-tile choice on everyone. Wire 4 candidates into the customizer + server config so users can choose which dark basemap they want, with per-browser persistence. ## Providers shipped | ID | Source | Filter | |---|---|---| | `carto-dark` (default) | `https://{s}.basemaps.cartocdn.com/dark_all/{z}/{x}/{y}{r}.png` | none | | `esri-darkgray-labels` | Esri Dark Gray Base + Reference (two stacked layers) | none | | `voyager-inverted` | Carto Voyager + CSS `invert(1) hue-rotate(180deg) brightness(0.9) contrast(1.05)` on `.leaflet-tile-pane` | applied in dark, cleared in light | | `positron-inverted` | Carto Positron + same CSS invert | applied in dark, cleared in light | No new dependencies — all providers are URL-only. ## Architecture - **`public/map-tile-providers.js`** — registry + 5 public helpers (`MC_TILE_PROVIDERS`, `MC_setDarkTileProvider`, `MC_getDarkTileProvider`, `MC_setServerDefaultTileProvider`, `MC_applyTileFilter`). Persists to `localStorage['mc-dark-tile-provider']`. Dispatches `mc-tile-provider-changed` on user pick. - **`public/map.js` / `public/live.js`** — resolve the active dark provider via the registry, manage the Esri labels overlay lifecycle (add when needed, remove cleanly so we don't leak layers on repeated theme toggles), and apply/clear the CSS filter on `.leaflet-tile-pane`. Listen for both `data-theme` mutations AND `mc-tile-provider-changed`. - **`public/customize-v2.js`** — new "Dark Map Tiles" dropdown in the Display tab. On change, calls `MC_setDarkTileProvider(id)`; the maps re-render live without reload. - **`public/roles.js`** — hydrates the server default via `MC_setServerDefaultTileProvider` from `/api/config/client`. - **Server (`cmd/server/`)** — new `mapDarkTileProvider` string on `Config` + surfaced in `ClientConfigResponse`. Default empty → client uses `carto-dark`. - **`config.example.json`** — documents the new field with all allowed values. ## Behavior guarantees (from the acceptance criteria) - ✅ Light mode is **completely unchanged** — `_resolveTileUrl(false)` short-circuits to `TILE_LIGHT` with no filter and no overlay logic. - ✅ Switching dark→light always clears the CSS filter, even if an inverted provider remains selected (`MC_applyTileFilter` is called on every theme change and early-returns to `style.filter = ''` when not dark). - ✅ Switching light→dark with an inverted provider re-applies the filter. - ✅ Attribution is updated per provider (Esri credit for Esri, CartoDB credit for the others); the Leaflet attribution control is refreshed. - ✅ Esri uses two stacked layers (base + reference labels). The reference layer is added/removed cleanly so repeat toggles do not leak. - ✅ Customizer change → immediate re-render, no reload. Uses the same "live setting + persist + dispatch event" pattern as cb-presets (#1361). ## TDD - Red commit: `148b71c3` — `test(#1420): add failing tests for dark-tile provider registry (red)` — 6/7 assertions fail (stub only returns nulls). - Green commit: `49ffb230` — `feat(#1420): dark-tile provider picker — 4 variants wired into customizer` — 7/7 pass. ## Tests `test-issue-1420-tile-providers.js` (wired into `test-all.sh` and `.github/workflows/deploy.yml` JS-unit step): ``` ── #1420 Dark-tile provider registry ── ✅ MC_TILE_PROVIDERS has all 4 IDs with url + attribution ✅ Inverted providers have non-null invertFilter; non-inverted have null ✅ MC_setDarkTileProvider persists to localStorage and dispatches mc-tile-provider-changed ✅ MC_setDarkTileProvider rejects unknown IDs (no persistence, no dispatch) ✅ MC_getDarkTileProvider falls back to server default, then carto-dark ✅ Apply filter for inverted provider in dark mode; clear when switching to non-inverted ✅ Light mode always clears the CSS filter even if inverted provider is selected 7 passed, 0 failed ``` `cd cmd/server && go build ./... && go vet ./...` — clean. ## CDP verification Not run in this PR — the sandbox does not have a Chrome CDP endpoint reachable, and staging cannot exercise this code path until this branch is deployed. The issue body's "CDP-verified candidate set" table covers prior provider-URL validation; the new code path (registry lookup + filter swap + Esri overlay lifecycle) is covered by the unit tests above. **Recommend operator run a quick manual verification on staging post-deploy:** dark mode → open customizer → cycle through all 4 providers, confirm tiles render and the CSS filter is applied for `voyager-inverted` / `positron-inverted` (verify via `getComputedStyle(document.querySelector('.leaflet-tile-pane')).filter`). ## Files touched - `public/map-tile-providers.js` (new) - `public/map.js`, `public/live.js`, `public/customize-v2.js`, `public/roles.js`, `public/index.html` - `cmd/server/config.go`, `cmd/server/routes.go`, `cmd/server/types.go` - `config.example.json` - `test-issue-1420-tile-providers.js` (new), `test-all.sh`, `.github/workflows/deploy.yml` - `.eslintrc.json` (register new `MC_*` globals) --------- Co-authored-by: openclaw <bot@openclaw.local>
