-- MySQL 8.0. Runtime fixes for the shared meeting_im database.
-- Execute with a privileged account that can read hotgo.im_tenant.

CREATE TABLE IF NOT EXISTS im_user_account_sequences (
    tenant_id BIGINT NOT NULL,
    id TINYINT UNSIGNED NOT NULL,
    next_value INT UNSIGNED NOT NULL,
    updated_at DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3)
        ON UPDATE CURRENT_TIMESTAMP(3),
    PRIMARY KEY (tenant_id, id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci;

-- If this table was created by the older independent-database script, its
-- primary key may still be only (id). Shared DB must key by tenant_id too.
ALTER TABLE im_user_account_sequences
    DROP PRIMARY KEY,
    ADD PRIMARY KEY (tenant_id, id);

INSERT INTO im_user_account_sequences (tenant_id, id, next_value)
SELECT tenant_id, 1, GREATEST(COALESCE(MAX(account_no), 999), 999)
FROM im_users
WHERE tenant_id > 0
GROUP BY tenant_id
ON DUPLICATE KEY UPDATE
    next_value = GREATEST(next_value, VALUES(next_value));

INSERT IGNORE INTO im_user_account_sequences (tenant_id, id, next_value)
SELECT id, 1, 999
FROM hotgo.im_tenant
WHERE state = 1;

DROP TABLE IF EXISTS im_login_lockouts;

-- HTTP write idempotency is Redis-backed. Keep it out of MySQL.
DROP TABLE IF EXISTS im_http_idempotency;
DROP TABLE IF EXISTS im_group_idempotency;
DROP TABLE IF EXISTS im_group_message_dedup;
DROP TABLE IF EXISTS im_group_message_topic_shards;
DROP TABLE IF EXISTS im_kafka_outbox;
DROP TABLE IF EXISTS im_kafka_consume_log;
DROP TABLE IF EXISTS im_business_events_outbox;
DROP TABLE IF EXISTS im_group_events_outbox;
DROP TABLE IF EXISTS im_login_failure_logs;
DROP TABLE IF EXISTS im_action_tokens;

-- User identity indexes must be unique inside one tenant, not globally.
ALTER TABLE im_users
    DROP INDEX uk_im_users_account_no,
    DROP INDEX users_phone,
    DROP INDEX users_username,
    ADD UNIQUE INDEX uk_im_users_tenant_account_no (tenant_id, account_no),
    ADD UNIQUE INDEX uk_im_users_tenant_phone (tenant_id, phone),
    ADD UNIQUE INDEX uk_im_users_tenant_username (tenant_id, username);

ALTER TABLE im_auth
    DROP INDEX auth_userid,
    ADD UNIQUE INDEX auth_tenant_userid (tenant_id, userid);

-- Topic/subscription runtime indexes for shared-database deployments.
-- These tables are on hot paths for topic lookup, message seq updates,
-- unread calculation and subscription permission checks. Keep tenant_id as
-- the leading column so one tenant does not scan another tenant's rows.
SET @schema_name := DATABASE();

SET @sql := IF((
    SELECT COUNT(*) FROM information_schema.statistics
    WHERE table_schema = @schema_name
      AND table_name = 'im_topics'
      AND index_name = 'uk_topics_tenant_name'
) = 0,
    'ALTER TABLE im_topics ADD UNIQUE INDEX uk_topics_tenant_name(tenant_id, name)',
    'SELECT ''skip uk_topics_tenant_name'' AS status'
);
PREPARE stmt FROM @sql; EXECUTE stmt; DEALLOCATE PREPARE stmt;

SET @sql := IF((
    SELECT COUNT(*) FROM information_schema.statistics
    WHERE table_schema = @schema_name
      AND table_name = 'im_topics'
      AND index_name = 'idx_topics_tenant_name_state_seqid'
) = 0,
    'ALTER TABLE im_topics ADD INDEX idx_topics_tenant_name_state_seqid(tenant_id, name, state, seqid)',
    'SELECT ''skip idx_topics_tenant_name_state_seqid'' AS status'
);
PREPARE stmt FROM @sql; EXECUTE stmt; DEALLOCATE PREPARE stmt;

SET @sql := IF((
    SELECT COUNT(*) FROM information_schema.statistics
    WHERE table_schema = @schema_name
      AND table_name = 'im_topics'
      AND index_name = 'idx_topics_tenant_owner'
) = 0,
    'ALTER TABLE im_topics ADD INDEX idx_topics_tenant_owner(tenant_id, owner)',
    'SELECT ''skip idx_topics_tenant_owner'' AS status'
);
PREPARE stmt FROM @sql; EXECUTE stmt; DEALLOCATE PREPARE stmt;

SET @sql := IF((
    SELECT COUNT(*) FROM information_schema.statistics
    WHERE table_schema = @schema_name
      AND table_name = 'im_subscriptions'
      AND index_name = 'idx_subscriptions_tenant_topic_deletedat'
) = 0,
    'ALTER TABLE im_subscriptions ADD INDEX idx_subscriptions_tenant_topic_deletedat(tenant_id, topic, deletedat)',
    'SELECT ''skip idx_subscriptions_tenant_topic_deletedat'' AS status'
);
PREPARE stmt FROM @sql; EXECUTE stmt; DEALLOCATE PREPARE stmt;

SET @sql := IF((
    SELECT COUNT(*) FROM information_schema.statistics
    WHERE table_schema = @schema_name
      AND table_name = 'im_subscriptions'
      AND index_name = 'idx_subscriptions_tenant_user_topic_deletedat'
) = 0,
    'ALTER TABLE im_subscriptions ADD INDEX idx_subscriptions_tenant_user_topic_deletedat(tenant_id, userid, topic, deletedat)',
    'SELECT ''skip idx_subscriptions_tenant_user_topic_deletedat'' AS status'
);
PREPARE stmt FROM @sql; EXECUTE stmt; DEALLOCATE PREPARE stmt;

-- Default app release rows used by /v1/im/app/releases/latest.
INSERT INTO hotgo.im_app_releases (
    platform, channel, latest_version, min_supported_version, update_type,
    release_notes, remind_after_seconds
) VALUES
    ('ios', 'stable', '1.0.0', '1.0.0', 'none', '当前已是最新版本。', 0),
    ('android', 'stable', '1.0.0', '1.0.0', 'none', '当前已是最新版本。', 0),
    ('web', 'stable', '1.0.0', '1.0.0', 'none', '当前已是最新版本。', 0)
ON DUPLICATE KEY UPDATE
    latest_version = VALUES(latest_version),
    min_supported_version = VALUES(min_supported_version),
    update_type = VALUES(update_type),
    release_notes = VALUES(release_notes),
    remind_after_seconds = VALUES(remind_after_seconds),
    updated_at = CURRENT_TIMESTAMP(3);