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scrabble-game/backend/internal/postgres/migrations/00014_single_bot_variant_preferences.sql
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Ilia Denisov 57c778f9b2
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feat(telegram,game): single bot + per-user variant preferences
Collapse the two per-language Telegram bots into one unified bot and
replace language-based variant gating with explicit per-user variant
preferences.

- Telegram: one bot; drop service_language and the supported_languages
  set everywhere (DB, account, auth, FlatBuffers Session wire, gateway,
  connector proto). The single bot renders chat and out-of-app push in
  the recipient's preferred_language; remove the game-language push
  routing override (notify Intent.Language / push Event.language).
- Preferences: new accounts.variant_preferences (text[], DB default
  {erudit_ru}, CHECK non-empty + subset of the three variants). Gates
  the New Game picker, vs-AI and the friend invitation the player
  creates, enforced server-side (HTTP 400 otherwise); an invited friend
  may still accept any variant. Edited on the Settings screen; variants
  are Erudit-first everywhere.
- Admin: drop the per-bot language selectors (broadcast / send-to-user)
  and the feedback channel_lang column/field.
- Env/CI: collapse TELEGRAM_BOT_TOKEN_{EN,RU}, TELEGRAM_GAME_CHANNEL_ID_{EN,RU},
  VITE_TELEGRAM_LINK{,_EN,_RU} and VITE_TELEGRAM_GAME_CHANNEL_NAME_{EN,RU}
  to single unsuffixed names; drop GATEWAY_DEFAULT_SUPPORTED_LANGUAGES.
- Docs updated (ARCHITECTURE, FUNCTIONAL + _ru, platform/telegram, gateway,
  backend, ui, UI_DESIGN, PRERELEASE).

The migration squash is deferred to a follow-up PR.
2026-06-20 14:23:25 +02:00

46 lines
2.2 KiB
SQL

-- +goose Up
-- Single-bot collapse + per-user variant preferences.
--
-- With one Telegram bot there is no longer a "service language" (which bot a player
-- signed in through), and variant availability is no longer gated by the bot's
-- supported languages but by an explicit per-account preference. variant_preferences
-- is the set of game variants (engine.Variant stable labels) a player is willing to be
-- matched into: it gates the New Game picker and the matchmaker, while an invited friend
-- may still accept any variant. New accounts default to Erudit only (a DB-level default,
-- so no application seed is needed); the set may never be empty and must be a subset of
-- the three known variants. feedback_messages.channel_lang (the bot a message arrived
-- through) likewise loses meaning under one bot and is dropped; the sender's interface
-- language (lang) is kept.
SET search_path = backend, pg_catalog;
ALTER TABLE accounts
ADD COLUMN variant_preferences text[] NOT NULL DEFAULT ARRAY['erudit_ru']::text[],
ADD CONSTRAINT accounts_variant_preferences_nonempty_chk
CHECK (cardinality(variant_preferences) >= 1),
ADD CONSTRAINT accounts_variant_preferences_subset_chk
CHECK (variant_preferences <@ ARRAY['scrabble_en', 'scrabble_ru', 'erudit_ru']::text[]);
ALTER TABLE accounts DROP COLUMN service_language;
ALTER TABLE feedback_messages DROP COLUMN channel_lang;
-- The auto-match pairing query filters open games by (variant, multiple_words_per_turn)
-- and takes the oldest by created_at; games_open_idx (open_deadline_at) does not serve it.
-- A partial index over open games turns the scan-and-sort into a single index seek.
CREATE INDEX games_open_match_idx ON games (variant, multiple_words_per_turn, created_at)
WHERE status = 'open';
-- +goose Down
SET search_path = backend, pg_catalog;
DROP INDEX games_open_match_idx;
ALTER TABLE feedback_messages ADD COLUMN channel_lang text;
ALTER TABLE accounts ADD COLUMN service_language text CHECK (service_language IN ('en', 'ru'));
ALTER TABLE accounts
DROP CONSTRAINT accounts_variant_preferences_subset_chk,
DROP CONSTRAINT accounts_variant_preferences_nonempty_chk,
DROP COLUMN variant_preferences;