Custom ROBLOX command --> Discord webhook?

Hello, Starlighxt!

I've made this script to hopefully match what you need. I put little notes here and there so you can see what everything does.

local http = game:GetService("HttpService")
local webhook = "" -- Your webhook here

local GroupID = 0 -- Change this to your group ID
local RanksAllowed = 0 -- Change this to what ranks are allowed. EX. Everything above 244 is allowed)
local prefix = ":" -- Change this to the prefix you want

game.Players.PlayerAdded:Connect(function(player)
    player.Chatted:Connect(function(msg)
        local m = msg:lower()

        if m:sub(1,10) == prefix.."announce " then -- This will basically see what the command is
            if player:GetRankInGroup(GroupID) >= RanksAllowed then
                local Announcement = m:sub(11) -- Gets everything after the command

                local Data = {
                    ["username"] = "Announce Bot", -- Whatever name you want for the bot
                    ["content"] = "@everyone "..Announcement
                }
                Data = http:JSONEncode(Data)
                http:PostAsync(webhook, Data)
            end
        end
    end)
end)

Hello, Starlighxt!

Scripting Helpers is not an requesting website, please aways make a try before posting a question here

You will need to know this before creating this script:

Player Added Event

Player Chatted Event

Dictionaries

For - do Loop

Manipulating strings

Using functions

HTTPService - Post Async

HTTPService - Json Enconde

First of all, lets define some variables: prefix, groupId, url

local prefix = ":"
local groupId = 3605321 -- Put group Id here
local url = "WebHook URL" -- Put webhook URL here

After that, we will define a variable for the HTTPService

local httpService = game:GetService("HttpService")

Then, we create an dictionary to hold our commands and functions that need to run for each command

local commands = {
    [1] = {
        ["command"] = "announce",
        ["function"] = function(player, args, fullArgs)
            if player:GetRankInGroup(groupId) > 50 then --If you want, you can change the needed rank here
            local request = {
                ["content"] = player.Name .. "'s announcement: \n" .. fullArgs .. "\n@everyone" -- \n is a new line in DiscordJs
            }   
            httpService:PostAsync(url, httpService:JSONEncode(request))
            end
        end
    }
}

Now, lets start with the events, first waiting for player join and then listening for him chatting:

game.Players.PlayerAdded:Connect(function(player)
    player.Chatted:Connect(function(msg)

    end
end

All the rest of the code will be insite the player.Chatted function

Now, we need to check for the prefix...

local prefixCheck = string.sub ( msg,1, string.len(prefix)) -- Cuts the string to check for the prefix
if prefixCheck ~= prefix then return end -- Stops the code if the prefix isn't there

For now, your code should be something like

local prefix = ":"
local groupId = 3605321 -- Put group Id here
local url = "https://discordapp.com/api/webhooks/657656270156726318/vzLbZ6vHgVk32lbL6O4b2z9CgH7G_cwYRWzKgyDVlHUJEiucBS-KvNgsPlCtdnqTr-X5" -- Put webhook URL here

local httpService = game:GetService("HttpService")



local commands = {
    [1] = {
        ["command"] = "announce",
        ["function"] = function(player, args, fullArgs)
            if player:GetRankInGroup(groupId) > 50 then --If you want, you can change the needed rank here
            local request = {
                ["content"] = player.Name .. "'s announcement: \n" .. fullArgs .. "\n@everyone"
            }   
            httpService:PostAsync(url, httpService:JSONEncode(request))
            end
        end
    }
}

game.Players.PlayerAdded:Connect(function(player)
    player.Chatted:Connect(function(msg)
        local prefixCheck = string.sub ( msg,1, string.len(prefix)) -- Cuts the string to check for the prefix
        if prefixCheck ~= prefix then return end -- Stops the code if the prefix isn't there

    end)
end)

After checking the prefix, we need to try extracting the command from the message, so we use string.sub and a for do loop

for _,v in pairs(commands) do
    local cmd = string.sub ( msg, string.len(prefix)+1, string.len(v["command"])+string.len(prefix)) -- Cuts the string to try getting only the command
    if cmd:lower() == v["command"]:lower() then --Checks if this is the command we want

    end
end

This part of the code will go inside the if cmd:lower() ... end

Basically we are extracting the arguments from the message on a full string, then transforming it on a table and then sending thease variables to the function that we created earlyear inside the dictionary

local FullArgs = string.sub ( msg, string.len(v["command"])+2) -- Try grabbing only the string arguments
local args = string.split(FullArgs, " ")

v["function"](player, args, FullArgs)

Yes, there're other ways on doing this, but I think this is one of the best because is easy to add new commands