Ranking Commands

local GlitchURL = "" --Place the glitch project URL inside of the quotes

function rankUser(UserId, RoleId)
    game:GetService("HttpService"):GetAsync(GlitchURL .. "ranker?userid=" .. UserId .. "&rank=" .. RoleId)
end

local groupId = 1234567 -- Place your group ID here
local minimumRankToUseCommands = 254 -- Place the minimum rank to use ranking commands here

local groupService = game:GetService("GroupService")
local groupInfo = groupService:GetGroupInfoAsync(groupId)

function getNextRank(CurrentRank)
    for i = 1, #groupInfo.Roles do
        local RankId = groupInfo.Roles[i].Rank
        if RankId > CurrentRank then
            return RankId
        end
    end
end

function getPreviousRank(CurrentRank)
    table.sort(groupInfo.Roles,     function(a,b) return a.Rank > b.Rank end)
    for i = 1, #groupInfo.Roles do
        local RankId = groupInfo.Roles[i].Rank
        if RankId < CurrentRank then
            return RankId
        end
    end
end

game.Players.PlayerAdded:Connect(function(Player)
    if Player:GetRankInGroup(groupId) >= minimumRankToUseCommands then
        Player.Chatted:Connect(function(Message)
            local LowerCaseMessage = string.lower(Message)
            if not string.find(LowerCaseMessage, "!rank") and not string.find(LowerCaseMessage, "!promote") and not string.find(LowerCaseMessage, "!demote") then return end
            local SplitMessage = string.split(Message, " ")
            local PlayerToRank = game.Players[SplitMessage[2]]

            if Player:GetRankInGroup(groupId) >  PlayerToRank:GetRankInGroup(groupId) then
                if string.find(LowerCaseMessage, "!rank") then
                    local RankId = SplitMessage[3]
                    rankUser(PlayerToRank.UserId, RankId)
                elseif string.find(LowerCaseMessage, "!promote") then
                    local PlayerCurrentRank = PlayerToRank:GetRankInGroup(groupId)
                    local RankId = getNextRank(PlayerCurrentRank)
                    rankUser(PlayerToRank.UserId, RankId)
                elseif string.find(LowerCaseMessage, "!demote") then
                    local PlayerCurrentRank = PlayerToRank:GetRankInGroup(groupId)
                    local RankId = getPreviousRank(PlayerCurrentRank)
                    rankUser(PlayerToRank.UserId, RankId)
                end
            end
        end)
    end
end)