CREATE TABLE IF NOT EXISTS tb_exchange_order (
    id BIGSERIAL PRIMARY KEY,
    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
    updated_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
    deleted_at TIMESTAMPTZ,
    creator BIGINT NOT NULL DEFAULT 0,
    updater BIGINT NOT NULL DEFAULT 0,

    exchange_no VARCHAR(50) NOT NULL,

    old_asset_type VARCHAR(20) NOT NULL,
    old_asset_id BIGINT NOT NULL,
    old_asset_identifier VARCHAR(100) NOT NULL,

    new_asset_type VARCHAR(20) DEFAULT '',
    new_asset_id BIGINT,
    new_asset_identifier VARCHAR(100) DEFAULT '',

    recipient_name VARCHAR(50) DEFAULT '',
    recipient_phone VARCHAR(20) DEFAULT '',
    recipient_address TEXT DEFAULT '',

    express_company VARCHAR(100) DEFAULT '',
    express_no VARCHAR(100) DEFAULT '',

    migrate_data BOOLEAN NOT NULL DEFAULT FALSE,
    migration_completed BOOLEAN NOT NULL DEFAULT FALSE,
    migration_balance BIGINT NOT NULL DEFAULT 0,

    exchange_reason VARCHAR(100) NOT NULL,
    remark TEXT,
    status INT NOT NULL DEFAULT 1,

    shop_id BIGINT
);

CREATE UNIQUE INDEX IF NOT EXISTS idx_exchange_order_no
    ON tb_exchange_order (exchange_no)
    WHERE deleted_at IS NULL;

CREATE INDEX IF NOT EXISTS idx_exchange_order_old_asset
    ON tb_exchange_order (old_asset_type, old_asset_id)
    WHERE deleted_at IS NULL;

CREATE INDEX IF NOT EXISTS idx_exchange_order_status
    ON tb_exchange_order (status)
    WHERE deleted_at IS NULL;

CREATE INDEX IF NOT EXISTS idx_exchange_order_shop_id
    ON tb_exchange_order (shop_id)
    WHERE deleted_at IS NULL;

CREATE INDEX IF NOT EXISTS idx_exchange_order_created_at
    ON tb_exchange_order (created_at DESC);

COMMENT ON TABLE tb_exchange_order IS '换货订单表';
COMMENT ON COLUMN tb_exchange_order.exchange_no IS '换货单号(EXC+日期+随机数)';
COMMENT ON COLUMN tb_exchange_order.old_asset_type IS '旧资产类型(iot_card/device)';
COMMENT ON COLUMN tb_exchange_order.old_asset_id IS '旧资产ID';
COMMENT ON COLUMN tb_exchange_order.old_asset_identifier IS '旧资产标识符(ICCID/虚拟号)';
COMMENT ON COLUMN tb_exchange_order.new_asset_type IS '新资产类型(iot_card/device)';
COMMENT ON COLUMN tb_exchange_order.new_asset_id IS '新资产ID';
COMMENT ON COLUMN tb_exchange_order.new_asset_identifier IS '新资产标识符(ICCID/虚拟号)';
COMMENT ON COLUMN tb_exchange_order.recipient_name IS '收件人姓名';
COMMENT ON COLUMN tb_exchange_order.recipient_phone IS '收件人电话';
COMMENT ON COLUMN tb_exchange_order.recipient_address IS '收货地址';
COMMENT ON COLUMN tb_exchange_order.express_company IS '快递公司';
COMMENT ON COLUMN tb_exchange_order.express_no IS '快递单号';
COMMENT ON COLUMN tb_exchange_order.migrate_data IS '是否执行全量迁移';
COMMENT ON COLUMN tb_exchange_order.migration_completed IS '迁移是否已完成';
COMMENT ON COLUMN tb_exchange_order.migration_balance IS '迁移转移金额(分)';
COMMENT ON COLUMN tb_exchange_order.exchange_reason IS '换货原因';
COMMENT ON COLUMN tb_exchange_order.remark IS '备注';
COMMENT ON COLUMN tb_exchange_order.status IS '换货状态 1-待填写信息 2-待发货 3-已发货待确认 4-已完成 5-已取消';
COMMENT ON COLUMN tb_exchange_order.shop_id IS '所属店铺ID';