【工具链】协议 Mock：前端联调的假服务器

---协议 Mock：按注册表应答
local MockSrv = { routes = {} }

---注册协议的模拟应答
function MockSrv.on(msgId, responder)
    MockSrv.routes[msgId] = responder
end

---收包的分发：路由命中即回包
function MockSrv.dispatch(msgId, body)
    local r = MockSrv.routes[msgId]
    if not r then
        Ops.log("Mock 未注册协议: " .. msgId)
        return nil
    end
    return r(body)
end

---注册示例：背包查询的模拟
MockSrv.on(MSGID.BAG_QUERY, function(body)
    return {
        slots = {
            { idx = 1, name = "金创药", count = 99 },
            { idx = 2, name = "裁决之杖", count = 1 },
        },
        maxSlot = 40,
    }
end)

---场景编排：异常流程的模拟
function MockSrv.scenario(name)
    -- 场景一：背包已满的错误分支
    if name == "bag_full" then
        MockSrv.on(MSGID.BAG_QUERY, function()
            return { err = 2001, msg = "背包已满" }
        end)
    end
    -- 场景二：延迟 3 秒的慢响应
    if name == "slow_net" then
        MockSrv.delay = 3000
    end
    -- 场景三：随机掉线
    if name == "disconnect" then
        MockSrv.dropRate = 0.2
    end
end