【数据存储】数据字典：物品与职业枚举的单一来源

---数据字典：枚举的单一来源
local Dict = {
    JOB = { warrior = 0, mage = 1, taoist = 2 },
    QUALITY = { white = 1, blue = 2, gold = 3 },
    SLOT = { weapon = 1, helmet = 2, armor = 3 },
}

function Dict.nameOf(group, value)
    for name, v in pairs(Dict[group]) do
        if v == value then return name end
    end
    return "unknown"
end

---业务侧的引用：不再出现裸数字
function Equip.canWear(actor, itemDef)
    local player = class(actor)
    if not player then return false end
    local job = tonumber(getplayvar(actor, 2, "Job")) or 0
    return itemDef.job == Dict.JOB.warrior and
        job == Dict.JOB.warrior
end

---配置装载时的字典校验
function Dict.validate(cfgTable, group, field)
    for i, row in ipairs(cfgTable) do
        local v = row[field]
        if v and not Dict.hasValue(group, v) then
            Ops.alert(("配置第 %d 行 %s 字段的 %s 不在字典")
                :format(i, field, tostring(v)))
            return false
        end
    end
    return true
end

---物品表的职业字段全量校验
function Dict.onLoad()
    Dict.validate(ITEM_TABLE, "JOB", "job")
    Dict.validate(MON_TABLE, "QUALITY", "quality")
end