【框架设计】好友推荐：每日推荐好友的算法框架

-- 好友推荐：三项打分
local player = class(actor)
local function recommendScore(player, candidate)
    local score = 0
    if math.abs(candidate.lv - (getbaseinfo(player, 1) or 0)) <= 10 then
        score = score + 40
    end
    if candidate.onlineRate >= 50 then
        score = score + 30
    end
    score = score + math.min(30, candidate.mutual * 2)
    return score
end

-- 推荐轮换：冷却与刷新
local player = class(actor)
local function refreshRecommend(player, candidates)
    local list = {}
    for _, cand in ipairs(candidates) do
        local rejected = tonumber(getplayvar(player, "HUMAN", "Reject_" .. cand.name) or 0)
        if os.time() - rejected > 2592000 and getplayvar(player, "HUMAN", "Friend_" .. cand.name) ~= 1 then
            cand.score = recommendScore(player, cand)
            list[#list + 1] = cand
        end
    end
    table.sort(list, function(a, b) return a.score > b.score end)
    setplayvar(player, "HUMAN", "RecmdDay", os.date("%Y%m%d"), true)
    for i = 1, math.min(5, #list) do
        sendmsg(player, 1, 0, "推荐好友：" .. list[i].name .. "（匹配度 " .. list[i].score .. "）")
    end
end