Ilia Denisov
b6c2598710
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Robokassa moderation requires the public offer to list every digital good with its price. Move /offer/ off the static landing container to the render sidecar: it splices the live catalog price list (§4.4) into the owner-edited ui/legal/offer_ru.md and renders it with the shared ui/src/lib/offer.ts — one renderer, no drift, always matching the current catalog with no redeploy. - backend: /api/v1/internal/offer/pricing (internal, off the edge allow-list) projects the active catalog into two markdown tables — chip packs priced per rail (roubles / VK votes / Telegram Stars) and chip-priced values — through payments.Money so no float reaches the page. Cached in memory: warmed at boot, marked stale on every catalog mutation, so a served render issues no query. - renderer: GET /offer/ fetches the tables and substitutes them at the <#pricing_template#> marker, then renders; offer_ru.md is baked into the image and marked is bundled from ui. GET /offer -> 301. Only /offer/ is edge-exposed. - caddy: route /offer/ to the sidecar; drop the now-dead landing /offer/ handlers and the vite emit-offer plugin. - offer: fill §4.3 (the chip-payment wording) and drop the in-page back link. - landing footer: a feedback link (the offer's Telegram contact) beside the offer link. - docs (ARCHITECTURE, FUNCTIONAL +_ru, renderer README), CI /offer/ probe, unit + integration + node tests.
45 lines
2.7 KiB
Markdown
45 lines
2.7 KiB
Markdown
# renderer — the render sidecar (finished-game image + public offer page)
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An internal Node service that runs shared `ui/src/lib` renderers server-side — bundled verbatim at
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image build time (`src/entry.ts` → esbuild → `dist/gameimage.mjs`) so there is one renderer and no
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drift from the browser. It serves two surfaces: the finished-game export **PNG** (on
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[skia-canvas](https://github.com/samizdatco/skia-canvas), pixel-identical to the design the owner
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signed off) and the public **offer page**.
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## Interface
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- `POST /render` — `{game, moves, alphabet, labels, dateLocale, hostname, scale?}` →
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`image/png`. `game`/`moves` are the ui-model shapes (`GameView` / `MoveRecord[]`);
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`alphabet` is the per-variant `(index, letter, value)` table tile values are drawn
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from; `labels` localizes the non-play moves (pass/exchange/resign/timeout);
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`hostname` + `dateLocale` feed the footer. Internal-only.
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- `GET /offer/` — the public offer page as `text/html`: the owner-edited `ui/legal/offer_ru.md`
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(baked into the image, read at boot) with the live catalog **price list** (§4.4) fetched as
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markdown from the backend's internal `/api/v1/internal/offer/pricing` (`RENDERER_BACKEND_URL`)
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and spliced in at the `<#pricing_template#>` marker, then rendered by the shared
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`ui/src/lib/offer.ts`. `GET /offer` → 301 `/offer/`. **The only edge-exposed route** — caddy
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routes `/offer/` here; a backend outage yields a 502, never a stale price list.
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- `GET /healthz` — liveness (the compose healthcheck the backend's `depends_on` gates on).
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The service renders and nothing else: for the PNG, authentication, the participant check and the
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signed public download URL all live in the backend (`backend/internal/server/export.go`), the path
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being client → gateway `/dl/*` → backend → this sidecar; for the offer, the catalog projection and
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its cache live in the backend (`backend/internal/payments/offer.go`) and no user input reaches the
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page.
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## Development
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```sh
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pnpm install # skia-canvas + esbuild MUST stay approved in pnpm-workspace.yaml
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# (allowBuilds) or the native binary is silently never fetched
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pnpm test # bundles, then node --test (PNG smoke + offer splice)
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# local run on :8090 (RENDERER_PORT overrides). For /offer/, point at the offer source and a
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# reachable backend (else the boot read / the price fetch fail):
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RENDERER_OFFER_MD=../ui/legal/offer_ru.md RENDERER_BACKEND_URL=http://localhost:8080 node src/server.mjs
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```
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The runtime image (`renderer/Dockerfile`, `node:22-slim`) bakes in Liberation Sans (the
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UI font stack's Linux face) and Noto Color Emoji (the scoresheet 🏆); skia-canvas picks
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both up through fontconfig. The fixture `testdata/request.json` is a real 35-move
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self-played Russian Scrabble game.
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