-- =============================================================================
-- SIP 分机 / AOR / Contact 与房间的统一管理（承接 03_domain_03_voice.sql）
-- 口径：
--   1) apt_sip_endpoint  = 分机（PJSIP endpoint），一房一分机，extension 不可改号；
--   2) apt_sip_aor        = 分机对应的 AOR（1:1，max_contacts=1 与文件一致）；
--   3) apt_sip_contact    = AOR 下的 contact（话机 IP 绑定事实，含历史）；
--   4) apt_sip_binding    = 房间 ↔ 分机的生效区间（历史可追溯，ACTIVE 唯一）；
--   5) 同一 gyid 下「一个 IP 只能有一个 ACTIVE contact」= 同一 IP 不得重复绑定；
--      用生成列 + 唯一索引在库层兜底，服务层再做一次可读的冲突前置校验。
-- 幂等：建表 IF NOT EXISTS，补列/补索引走 information_schema 判断 + 动态 SQL。
-- =============================================================================
SET NAMES utf8mb4;

-- -----------------------------------------------------------------------------
-- 1. endpoint 补列：话机 IP（与 contact 一致）与来源
-- -----------------------------------------------------------------------------
CALL apt_add_column_if_missing('apt_sip_endpoint', 'ip_address',
    "ip_address VARCHAR(64) NULL COMMENT '话机 IP（与 ACTIVE contact 的 ip_address 一致，解绑后清空）'");
CALL apt_add_column_if_missing('apt_sip_endpoint', 'source',
    "source VARCHAR(20) NOT NULL DEFAULT 'ROOM' COMMENT 'ROOM=随房间自动创建 / MANUAL=手工登记'");

-- -----------------------------------------------------------------------------
-- 2. AOR 表（与 endpoint 1:1）
-- -----------------------------------------------------------------------------
CREATE TABLE IF NOT EXISTS apt_sip_aor (
    id                 BIGINT       NOT NULL AUTO_INCREMENT,
    gyid               VARCHAR(32)  NOT NULL,
    aor_id             VARCHAR(64)  NOT NULL              COMMENT 'AOR 标识，如 AOR-<endpointId 后缀>',
    endpoint_id        VARCHAR(64)  NOT NULL              COMMENT '所属分机（1:1）',
    max_contacts       INT          NOT NULL DEFAULT 1    COMMENT 'Asterisk max_contacts',
    remove_existing    TINYINT      NOT NULL DEFAULT 1    COMMENT 'Asterisk remove_existing：新注册顶掉旧 contact',
    default_expiration INT          NOT NULL DEFAULT 3600 COMMENT 'contact 默认过期秒数',
    qualify_frequency  INT          NOT NULL DEFAULT 30   COMMENT 'OPTIONS 探测间隔秒',
    sync_state         VARCHAR(20)  NOT NULL DEFAULT 'PENDING' COMMENT '仅 PENDING/SYNCED/FAILED/DRIFT',
    config_version     BIGINT       NOT NULL DEFAULT 1,
    deleted            TINYINT      NOT NULL DEFAULT 0,
    create_time        DATETIME(3)  NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
    update_time        DATETIME(3)  NOT NULL DEFAULT CURRENT_TIMESTAMP(3) ON UPDATE CURRENT_TIMESTAMP(3),
    PRIMARY KEY (id),
    UNIQUE KEY uk_aor_gyid_id (gyid, aor_id),
    UNIQUE KEY uk_aor_gyid_endpoint (gyid, endpoint_id),
    KEY idx_aor_gyid_sync (gyid, sync_state),
    CONSTRAINT ck_aor_sync CHECK (sync_state IN ('PENDING','SYNCED','FAILED','DRIFT'))
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci
  COMMENT='SIP AOR（与 endpoint 1:1，先库后 Asterisk）';

-- -----------------------------------------------------------------------------
-- 3. Contact 表（话机 IP 绑定事实）
--    active_ip 生成列：仅 ACTIVE 且未删除时取值，配合唯一索引实现
--    「同 gyid 下一个 IP 只能有一个 ACTIVE contact」。
-- -----------------------------------------------------------------------------
CREATE TABLE IF NOT EXISTS apt_sip_contact (
    id            BIGINT       NOT NULL AUTO_INCREMENT,
    gyid          VARCHAR(32)  NOT NULL,
    contact_id    VARCHAR(64)  NOT NULL,
    aor_id        VARCHAR(64)  NOT NULL,
    endpoint_id   VARCHAR(64)  NOT NULL,
    uri           VARCHAR(255) NOT NULL              COMMENT 'sip:<extension>@<ip>:<port>',
    ip_address    VARCHAR(64)  NOT NULL,
    port          INT          NOT NULL DEFAULT 5060,
    transport     VARCHAR(8)   NOT NULL DEFAULT 'udp',
    user_agent    VARCHAR(128) NULL,
    source        VARCHAR(20)  NOT NULL DEFAULT 'STATIC' COMMENT 'STATIC=手工绑定 / DYNAMIC=注册上报',
    state         VARCHAR(20)  NOT NULL DEFAULT 'ACTIVE' COMMENT 'ACTIVE/RELEASED/EXPIRED',
    last_seen_at  DATETIME(3)  NULL,
    released_at   DATETIME(3)  NULL,
    release_remark VARCHAR(128) NULL,
    active_ip     VARCHAR(64)  GENERATED ALWAYS AS
                  (CASE WHEN state = 'ACTIVE' AND deleted = 0 THEN ip_address END) STORED,
    deleted       TINYINT      NOT NULL DEFAULT 0,
    create_time   DATETIME(3)  NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
    update_time   DATETIME(3)  NOT NULL DEFAULT CURRENT_TIMESTAMP(3) ON UPDATE CURRENT_TIMESTAMP(3),
    PRIMARY KEY (id),
    UNIQUE KEY uk_contact_gyid_id (gyid, contact_id),
    UNIQUE KEY uk_contact_gyid_active_ip (gyid, active_ip),
    KEY idx_contact_gyid_endpoint (gyid, endpoint_id, state),
    KEY idx_contact_gyid_aor (gyid, aor_id, state),
    CONSTRAINT ck_contact_state CHECK (state IN ('ACTIVE','RELEASED','EXPIRED'))
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci
  COMMENT='SIP contact（话机 IP 绑定事实，保留历史；同 IP 唯一 ACTIVE）';

-- -----------------------------------------------------------------------------
-- 4. binding 兜底：一个 endpoint 同时只能有一条 ACTIVE 绑定
-- -----------------------------------------------------------------------------
SET @apt_binding_col = (SELECT COUNT(*) FROM information_schema.COLUMNS
    WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'apt_sip_binding'
      AND COLUMN_NAME = 'active_endpoint');
SET @apt_sql_binding_col = IF(@apt_binding_col = 0,
    'ALTER TABLE apt_sip_binding ADD COLUMN active_endpoint VARCHAR(64) GENERATED ALWAYS AS (CASE WHEN state = ''ACTIVE'' AND deleted = 0 THEN endpoint_id END) STORED',
    'SELECT 1');
PREPARE stmt_binding_col FROM @apt_sql_binding_col;
EXECUTE stmt_binding_col;
DEALLOCATE PREPARE stmt_binding_col;

SET @apt_binding_idx = (SELECT COUNT(*) FROM information_schema.STATISTICS
    WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'apt_sip_binding'
      AND INDEX_NAME = 'uk_binding_gyid_active_ep');
SET @apt_sql_binding_idx = IF(@apt_binding_idx = 0,
    'ALTER TABLE apt_sip_binding ADD UNIQUE KEY uk_binding_gyid_active_ep (gyid, active_endpoint)',
    'SELECT 1');
PREPARE stmt_binding_idx FROM @apt_sql_binding_idx;
EXECUTE stmt_binding_idx;
DEALLOCATE PREPARE stmt_binding_idx;

-- -----------------------------------------------------------------------------
-- 5. 校验
-- -----------------------------------------------------------------------------
SELECT '=== 32. SIP 表就绪（应 4：endpoint/binding/aor/contact）===' AS section;
SELECT COUNT(*) AS sip_tables
FROM information_schema.TABLES
WHERE TABLE_SCHEMA = DATABASE()
  AND TABLE_NAME IN ('apt_sip_endpoint','apt_sip_binding','apt_sip_aor','apt_sip_contact');

SELECT '=== 33. endpoint 补列（应 2）===' AS section;
SELECT COUNT(*) AS endpoint_columns
FROM information_schema.COLUMNS
WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'apt_sip_endpoint'
  AND COLUMN_NAME IN ('ip_address','source');

SELECT '=== 34. 同 IP 唯一 ACTIVE 的库层兜底（应 1）===' AS section;
SELECT INDEX_NAME, GROUP_CONCAT(COLUMN_NAME ORDER BY SEQ_IN_INDEX) AS cols
FROM information_schema.STATISTICS
WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'apt_sip_contact'
  AND INDEX_NAME = 'uk_contact_gyid_active_ip'
GROUP BY INDEX_NAME;

SELECT '=== 35. 一 endpoint 仅一条 ACTIVE 绑定（应 1）===' AS section;
SELECT INDEX_NAME, GROUP_CONCAT(COLUMN_NAME ORDER BY SEQ_IN_INDEX) AS cols
FROM information_schema.STATISTICS
WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'apt_sip_binding'
  AND INDEX_NAME = 'uk_binding_gyid_active_ep'
GROUP BY INDEX_NAME;