--合服逻辑

--[=[
    0. --创建一个mongo连接实例


]=]--




local DB = require("common.DB")
local LuaMongo = _G.lua_mongo
local Config = require("Config")
local Log = require("common.Log")
local MergeServerDefine = require("merge.MergeServerDefine")


local primaryKeyTable = {}

local dbcache = {}

--重复_id缓存表
local repeatIdTb = {}


--创建一个mongo连接实例
local function clientMongoDb()
    LuaMongo.client(Config.DB_IP)
end

--切换数据库
local function chooseMongoDb(dbName)
    if not dbName or dbName == "" then
        print(string.format("数据库名错误, dbName = %s\n", dbName))
        return
    end
	LuaMongo.auth(dbName, Config.DB_USER, Config.DB_PASS)
end

--生成新的 _id
local function generateNewId()
    local newId = LuaMongo.id()
    return newId
end



---------------------------------------优化-----------------------------


local function processCollection(sourceDb, targetDb, collectionName)
    local finalName = sourceDb .. collectionName
    local targetCollection = targetDb .. collectionName


    LuaMongo.find(finalName, nil, {})
    while true do
        local data = {}
        if not LuaMongo.next(data) then
            break
        end

        --直接插入目标库
        local ok, err = pcall(LuaMongo.insert, targetCollection, data)
        if not ok then
            print(string.format("=================插入失败, sourceDb = %s, collectionName = %s, _id = %s, err = %s\n", sourceDb, collectionName, data._id, err))
            --Log.write(Log.LOGID_OSS_MERGE, finalName, data._id, err)
        end
    end
end


local writeQueue = {}
local function flushWriteQueue()
    for _, task in ipairs(writeQueue) do
        local ok, err = pcall(LuaMongo.insert, task.collection, task.data)
        if not ok then
            Log.error("插入失败", task)
        end
    end
    writeQueue = {}
end

-- 每积累100条数据批量写入
local function bufferedInsert(collection, data)
    table.insert(writeQueue, {collection=collection, data=data})
    if #writeQueue >= 100 then
        flushWriteQueue()
    end
end



----------------------------------------------------------------


-----------------------------------------------------char集合中_id的重复检测和处理-------------------------------------------------

--用于检测不同数据库的char集合中的_id是否有重复, 一般来说通过mongo生成的_id基本不会重复，但是还是检测下
local function primaryKeyRepeatCheck(dbName)
    if not dbName or dbName == "" then
        print(string.format("数据库名错误, dbName = %s\n", dbName))
        return
    end

    local collectionName = MergeServerDefine.COLLECTIONS[1]
    local finalName = dbName .. collectionName

    LuaMongo.find(finalName, nil, {newUniqueTag = 1, _id = 1})
    while true do
		local data = {}
		if not LuaMongo.next(data) then
			break
		end
        if primaryKeyTable[data._id] then
            print(string.format("重复的_id, dbName = %s, _id = %s\n", dbName, data._id))
        end
        primaryKeyTable[data._id] = '1'
    end
end

--好友集合
local function handleFriend(data)
    if repeatIdTb[data.uuid1] then
        data.uuid1 = repeatIdTb[data.uuid1]
    end

    if repeatIdTb[data.uuid2] then
        data.uuid2 = repeatIdTb[data.uuid2]
    end
end

--邮件集合
local function handleMail(data)
    if repeatIdTb[data.receiverUuid] then
        data.receiverUuid = repeatIdTb[data.receiverUuid]
    end
end

--公会集合
local function handleUnion(data)
    local tb = {}
    for id, v in pairs(data.member) do
        if repeatIdTb[id] then
            tb[id] = v
        end
    end

    for id, v in pairs(tb) do
        data.member[id] = nil
        data.member[repeatIdTb[id]] = v
    end


    tb = {}
    for id, v in pairs(data.apply) do
        if repeatIdTb[id] then
            tb[id] = v
        end
    end

    for id, v in pairs(tb) do
        data.apply[id] = nil
        data.apply[repeatIdTb[id]] = v
    end

    if data.presidentUuid and repeatIdTb[data.presidentUuid] then
        data.presidentUuid = repeatIdTb[data.presidentUuid]
    end
end

--星空争霸集合
local function handleStar(data)
    if repeatIdTb[data.uuid] then
        data.uuid = repeatIdTb[data.uuid]
    end
end

--单人竞技场集合
local function handleJJC(data)
    if not data.monsterOutID and repeatIdTb[data._id] then
        data._id = repeatIdTb[data._id]
    end
end

--战斗视频集合
local function handleVideo(data)
    local uuid = data.combatInfo.attacker.uuid
    if repeatIdTb[uuid] then
        data.combatInfo.attacker.uuid = repeatIdTb[uuid]
    end
end

---------------------------------------------------------------------------------------------------------------------------

local tblList = { "ckwy_fy_S350064", "ckwy_fy_S350004" }
local collName = ".middle_act_group"


--合服开始函数
function StartMergeServer()
    print("========================合服开始=====================\n")
    --连接数据库
    clientMongoDb()

    local targetDb = MergeServerDefine.MERGEDBTB[1]

    for i = 2, #MergeServerDefine.MERGEDBTB do
        local sourceDb = MergeServerDefine.MERGEDBTB[i]
        LuaMongo.auth(sourceDb, Config.DB_USER, Config.DB_PASS)

        for _, coll in ipairs(MergeServerDefine.COLLECTIONS) do
            if not MergeServerDefine.NOINSERTCOLLECTIONS[coll] then
                print(string.format("=====================开始合并集合: %s\n", coll))
                processCollection(sourceDb, targetDb, coll)
            end
        end
    end

    -- for _, db in ipairs(tblList) do
    --     LuaMongo.auth(db, Config.DB_USER, Config.DB_PASS)
    --     local coll = db .. collName
    --     LuaMongo.find(coll)
    --     while true do
    --         local data = {}
    --         if not LuaMongo.next(data) then
    --             break
    --         end
    --         print(string.format("================[StartMergeServer], _id : %s, startIdx :%s, endIdx :%s\n", data._id, data.startIdx, data.endIdx))
    --     end
    -- end
end