-- Cosmic Clash matchmaking control plane, migration 0001.
-- PostgreSQL is the durable authority. Redis indexes are rebuildable and do
-- not appear in this schema or in any ownership constraint.

CREATE TABLE identities (
    player_id TEXT PRIMARY KEY,
    steam_id TEXT NOT NULL UNIQUE,
    created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
    banned_until TIMESTAMPTZ,
    ban_reason TEXT
);

CREATE TABLE sessions (
    session_id TEXT PRIMARY KEY,
    player_id TEXT NOT NULL REFERENCES identities(player_id),
    token_digest BYTEA NOT NULL UNIQUE,
    expires_at TIMESTAMPTZ NOT NULL,
    revoked_at TIMESTAMPTZ,
    created_at TIMESTAMPTZ NOT NULL DEFAULT now()
);

CREATE TABLE queue_tickets (
    ticket_id TEXT PRIMARY KEY,
    player_id TEXT NOT NULL REFERENCES identities(player_id),
    playlist TEXT NOT NULL CHECK (playlist IN ('casual', 'ranked')),
    state TEXT NOT NULL CHECK (state IN ('QUEUED', 'PROPOSED', 'ACCEPTED', 'ALLOCATING', 'PROCESS_READY', 'ASSIGNMENT_READY', 'ASSIGNED', 'CONNECTING', 'LIVE', 'RESULT_PENDING', 'COMPLETED', 'CANCELLED', 'EXPIRED', 'FAILED')),
    client_build TEXT NOT NULL,
    protocol_version INTEGER NOT NULL CHECK (protocol_version > 0),
    enqueued_at TIMESTAMPTZ NOT NULL,
    expires_at TIMESTAMPTZ NOT NULL,
    revision BIGINT NOT NULL DEFAULT 0 CHECK (revision >= 0),
    created_at TIMESTAMPTZ NOT NULL DEFAULT now()
);

CREATE UNIQUE INDEX queue_tickets_one_active_per_player
    ON queue_tickets (player_id)
    WHERE state IN ('QUEUED', 'PROPOSED', 'ACCEPTED', 'ALLOCATING', 'PROCESS_READY', 'ASSIGNMENT_READY', 'ASSIGNED', 'CONNECTING', 'LIVE', 'RESULT_PENDING');

CREATE TABLE proposals (
    proposal_id TEXT PRIMARY KEY,
    playlist TEXT NOT NULL CHECK (playlist IN ('casual', 'ranked')),
    state TEXT NOT NULL CHECK (state IN ('OPEN', 'ACCEPTED', 'DECLINED', 'EXPIRED', 'CANCELLED')),
    expires_at TIMESTAMPTZ NOT NULL,
    revision BIGINT NOT NULL DEFAULT 0 CHECK (revision >= 0),
    created_at TIMESTAMPTZ NOT NULL DEFAULT now()
);

CREATE TABLE proposal_participants (
    proposal_id TEXT NOT NULL REFERENCES proposals(proposal_id),
    player_id TEXT NOT NULL REFERENCES identities(player_id),
    ticket_id TEXT NOT NULL REFERENCES queue_tickets(ticket_id),
    response TEXT NOT NULL CHECK (response IN ('PENDING', 'ACCEPTED', 'DECLINED', 'TIMED_OUT')),
    responded_at TIMESTAMPTZ,
    PRIMARY KEY (proposal_id, player_id),
    UNIQUE (proposal_id, ticket_id)
);

CREATE TABLE matches (
    match_id TEXT PRIMARY KEY,
    playlist TEXT NOT NULL CHECK (playlist IN ('casual', 'ranked')),
    state TEXT NOT NULL CHECK (state IN ('ALLOCATING', 'PROCESS_READY', 'ASSIGNMENT_READY', 'ASSIGNED', 'CONNECTING', 'LIVE', 'RESULT_PENDING', 'COMPLETED', 'CANCELLED', 'FAILED')),
    region TEXT NOT NULL CHECK (region IN ('EU', 'NA')),
    protocol_version INTEGER NOT NULL CHECK (protocol_version > 0),
    server_id TEXT,
    revision BIGINT NOT NULL DEFAULT 0 CHECK (revision >= 0),
    created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
    completed_at TIMESTAMPTZ
);

CREATE TABLE match_participants (
    match_id TEXT NOT NULL REFERENCES matches(match_id),
    player_id TEXT NOT NULL REFERENCES identities(player_id),
    ticket_id TEXT NOT NULL REFERENCES queue_tickets(ticket_id),
    slot INTEGER NOT NULL CHECK (slot BETWEEN 0 AND 5),
    team INTEGER NOT NULL CHECK (team IN (0, 1)),
    connection_generation BIGINT NOT NULL DEFAULT 0 CHECK (connection_generation >= 0),
    connected_at TIMESTAMPTZ,
    abandoned_at TIMESTAMPTZ,
    participation_active BOOLEAN NOT NULL DEFAULT TRUE,
    PRIMARY KEY (match_id, player_id),
    UNIQUE (match_id, slot)
);

CREATE UNIQUE INDEX match_participants_one_active_match
    ON match_participants (player_id)
    WHERE participation_active;

CREATE TABLE ratings (
    player_id TEXT PRIMARY KEY REFERENCES identities(player_id),
    rating DOUBLE PRECISION NOT NULL DEFAULT 1500,
    deviation DOUBLE PRECISION NOT NULL DEFAULT 350,
    volatility DOUBLE PRECISION NOT NULL DEFAULT 0.06,
    ranked_games INTEGER NOT NULL DEFAULT 0 CHECK (ranked_games >= 0),
    revision BIGINT NOT NULL DEFAULT 0 CHECK (revision >= 0),
    updated_at TIMESTAMPTZ NOT NULL DEFAULT now()
);

CREATE TABLE result_receipts (
    result_id TEXT PRIMARY KEY,
    match_id TEXT NOT NULL UNIQUE REFERENCES matches(match_id),
    result_nonce TEXT NOT NULL UNIQUE,
    payload_digest BYTEA NOT NULL,
    integrity_state TEXT NOT NULL CHECK (integrity_state IN ('CERTIFIED', 'SUPPRESSED', 'REVIEW')),
    received_at TIMESTAMPTZ NOT NULL DEFAULT now(),
    committed_at TIMESTAMPTZ
);

CREATE TABLE outbox (
    event_id TEXT PRIMARY KEY,
    aggregate_type TEXT NOT NULL,
    aggregate_id TEXT NOT NULL,
    revision BIGINT NOT NULL CHECK (revision >= 0),
    event_type TEXT NOT NULL,
    payload JSONB NOT NULL,
    created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
    published_at TIMESTAMPTZ,
    UNIQUE (aggregate_type, aggregate_id, revision)
);

CREATE TABLE audit_events (
    audit_id BIGSERIAL PRIMARY KEY,
    actor_type TEXT NOT NULL CHECK (actor_type IN ('PLAYER', 'SERVER', 'SYSTEM', 'ADMIN')),
    actor_id TEXT,
    action TEXT NOT NULL,
    aggregate_type TEXT NOT NULL,
    aggregate_id TEXT NOT NULL,
    request_id TEXT,
    metadata JSONB NOT NULL DEFAULT '{}'::jsonb,
    created_at TIMESTAMPTZ NOT NULL DEFAULT now()
);

CREATE INDEX queue_tickets_candidate_order
    ON queue_tickets (playlist, enqueued_at, ticket_id)
    WHERE state = 'QUEUED';

CREATE INDEX outbox_unpublished_order
    ON outbox (created_at, event_id)
    WHERE published_at IS NULL;