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OpenFUT-Core/migrations/0027_consumable_applications.sql
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feat(core): one instance-based ownership model for every kind of owned content
Core could only own players. Everything else a FUT club holds — managers, staff,
consumables, kits, badges, balls, stadiums — had no representation, so the only
way to show one to a client was to synthesise it on read. That is the failure
mode this commit exists to make impossible: read authority, write authority and
persistent ownership authority are now the same rows.

MODEL. There is deliberately NO parallel items table. A manager, a consumable, a
kit and a player are all rows in `owned_cards`, differing only by a new
game-INDEPENDENT `content_kind` (player|manager|staff|consumable|kit|badge|ball|
stadium|misc). A game adapter translates its own taxonomy — FIFA 17's
`cardsubtypeid` and resource ranges — into one of those tokens before ownership
reaches Core; no game's numerics land here. Ownership stays INSTANCE-based:
`card_id` is the definition, `id` is the instance, and two copies of one
definition remain two rows.

`quantity` is a nullable per-instance attribute, not a replacement for the
instance. The real profile settles this: its 17 consumables are instance-based
and only SOME carry a wire `amount` (observed 1,2,4,5,10,15), while two copies of
definition 5003068 exist as two distinct instances. So NULL means "not a stack"
and a positive integer is the stack size; collapsing instances into counts is
forbidden by the model.

ACTIVE DESIGNATIONS. Migration 0024's two-slot kit table becomes
`club_active_items` over the five slots that correspond exactly to the client's
recovered equipped-state vocabulary (activeBadge 100, activeHomeKit 101,
activeAwayKit 102, activeBall 103, activeStadium 104). There is no
activeLeagueLogo or activeMisc token, so those kinds correctly get no slot. The
invariants are schema-enforced rather than conventional: PK(club_id, slot) allows
at most one item per role, `owned_card_id UNIQUE` makes "the same card is both
home and away kit" unstorable, and ON DELETE CASCADE means a quick-sold or
consumed item cannot be projected back as active. 0024's trigger is preserved in
semantics — and dropped EXPLICITLY before its table, because it lives ON
`owned_cards`, so DROP TABLE would have orphaned it and broken every later
ownership transfer. It still exists because the market moves ownership by UPDATE,
which no foreign key can observe.

CONSUMABLE ACTIONS. `services/consume.rs` is one transaction primitive —
validate source ownership and kind, validate target, mutate, consume the source
exactly once, commit — guarded by `UNIQUE(profile_id, action_identity)` in
migration 0027, the same discipline as `match_completions`. It supports both
deleting the row and decrementing a stack, chosen by the caller, inside the one
transaction and the one replay guard. It deliberately contains NO category
formulas: an unreversed effect must not be invented, so callers supply the
mutation and category validation stays explicit.

`/club/kits` is replaced by slot-generic `/club/active-items`. `get_collection`
now carries `content_kind` and `quantity`, accepts a `content_kind` filter, and
— importantly — stops dropping an owned card with a missing definition silently:
the envelope reports `owned_rows`, `unresolved_items` and the offending
definition ids. That silent `filter_map` is the documented cause of a club that
looks empty while the rows are all present.

Verified against a REAL populated club, not a fixture: the production snapshot
(migration 19) is copied to a tempdir, migrated to 0024, given two kit
designations on real owned instances, then migrated to head. 1986 owned rows
survive as content_kind='player', both designations land in `club_active_items`,
no row gains a quantity, and the old table is gone. 258 tests pass, clippy clean.
2026-08-21 19:10:54 +00:00

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SQL

-- Durable idempotency for applying a consumable to a target.
--
-- Same discipline as `match_completions` (migration 0022): ONE effect per
-- (profile_id, action_identity). A sequential replay, a restart replay, a
-- concurrent duplicate, or a retried HTTP request all collide on this UNIQUE and
-- are refused BEFORE the target is mutated and BEFORE the source is consumed —
-- so a consumable can never be spent twice, and its effect can never be applied
-- twice from one spend.
--
-- `action_identity` is opaque to Core: the game adapter/host derives a stable
-- per-application token from its own wire request. Core never parses it.
--
-- `source_owned_card_id` / `target_owned_card_id` are deliberately NOT foreign
-- keys: the source row is DELETEd (or decremented to zero and deleted) by the
-- very transaction that writes this record, and the target may later be sold.
-- This table is an audit + replay record, not an ownership reference.
--
-- `effect` is the caller-supplied outcome summary stored verbatim as JSON text.
-- Core defines NO per-category formula: what a given consumable does to its
-- target is the calling game adapter's reversed behaviour, and an unreversed
-- behaviour must not be invented here.
CREATE TABLE consumable_applications (
id TEXT PRIMARY KEY NOT NULL,
profile_id TEXT NOT NULL REFERENCES profiles(id),
action_identity TEXT NOT NULL,
source_owned_card_id TEXT NOT NULL,
source_card_id TEXT NOT NULL,
source_content_kind TEXT NOT NULL,
-- 1 = the source instance was destroyed; 0 = a stack was decremented.
source_consumed INTEGER NOT NULL,
-- Remaining stack size after a decrement, NULL when the instance was destroyed.
source_quantity_after INTEGER,
target_owned_card_id TEXT,
effect TEXT NOT NULL,
applied_at TEXT NOT NULL,
UNIQUE(profile_id, action_identity)
);
CREATE INDEX idx_consumable_applications_profile
ON consumable_applications(profile_id);