local function addSkills(player, skillId)
    player:addSkillTries(skillId, player:getVocation():getRequiredSkillTries(skillId, player:getSkillLevel(skillId) + 1) - player:getSkillTries(skillId))
 return false
end


local skillids = {
    ["shield"] = SKILL_SHIELD,
    ["sword"] = SKILL_SWORD,
    ["axe"] = SKILL_AXE,
    ["club"] = SKILL_CLUB,
    ["fist"] = SKILL_FIST,
    ["dist"] = SKILL_DISTANCE
    }
local attributes = {
    ["health"] =    {reqPoints = 1, increaseBy = 2, name = "Hit Points"},
    ["mana"] =      {reqPoints = 1, increaseBy = 2, name = "Mana Points"},
    ["magic"] =     {reqPoints = 15, increaseBy = 1, name = "Magic Level"},
    ["shielding"] = {reqPoints = 15, increaseBy = 1, name = "Shielding Skill"},
    ["sword"] =     {reqPoints = 15, increaseBy = 1, name = "Sword Skill"},
    ["axe"] =       {reqPoints = 15, increaseBy = 1, name = "Axe Skill"},
    ["club"] =      {reqPoints = 15, increaseBy = 1, name = "Club Skill"},
    ["fist"] =      {reqPoints = 15, increaseBy = 1, name = "Fist Skill"},
    ["distance"] =  {reqPoints = 15, increaseBy = 1, name = "Distance Skill"},
    }

function onModalWindow(player, modalWindowId, buttonId, choiceId)
    print("LOADED")
local SKILL_POINTS = 45200 --- Change here the storage value used to save the skill points
local points = player:getStorageValue(SKILL_POINTS)

local function sendCancel()
    player:sendTextMessage(MESSAGE_INFO_DESCR, "You do not have the required amount of Skill Points!")
end

local function doAddHealth(param, attributes)
    player:setMaxHealth(player:getMaxHealth() + attributes["health"].increaseBy*param)
    player:addHealth(attributes["health"].increaseBy*param)
    player:setStorageValue(SKILL_POINTS, points - attributes["health"].reqPoints*param)
    player:sendTextMessage(MESSAGE_INFO_DESCR, "You have gained " ..attributes["health"].increaseBy.. " " ..attributes["health"].name.. "!")
return true
end

local function doAddMana(param, attributes)
    player:setMaxMana(player:getMaxMana() + attributes["mana"].increaseBy*param)
    player:addMana(attributes["mana"].increaseBy*param)
    player:setStorageValue(SKILL_POINTS, points - attributes["mana"].reqPoints*param)
    player:sendTextMessage(MESSAGE_INFO_DESCR, "You have gained " ..attributes["mana"].increaseBy.. " " ..attributes["mana"].name.. "!")
return true
end

if (not modalWindowId == 1) or (buttonId == 4) then
    return false
end

    if choiceId == 1 then
        if buttonId == 1 then
            if points >= attributes["health"].reqPoints then
                doAddHealth(1, attributes)
            else
                sendCancel()
            end
        end
        if buttonId == 2 then
            if points >= attributes["health"].reqPoints*2 then
                doAddHealth(2, attributes)
            else
                sendCancel()
            end
        end
        if buttonId == 3 then
            if points >= attributes["health"].reqPoints*5 then
                doAddHealth(5, attributes)
            else
                sendCancel()
            end
        end
    end
    if choiceId == 2 then
        if buttonId == 1 then
            if points >= attributes["mana"].reqPoints then
                doAddMana(1, attributes)
            else
                sendCancel()
            end
        end
        if buttonId == 2 then
            if points >= attributes["mana"].reqPoints*2 then
                doAddMana(2, attributes)
            else
                sendCancel()
            end
        end
        if buttonId == 3 then
            if points >= attributes["mana"].reqPoints*5 then
                doAddMana(5, attributes)
            else
                sendCancel()
            end
        end
    end
    if choiceId == 3 then
        if buttonId == 1 then
            if points >= attributes["magic"].reqPoints then
                player:addManaSpent(math.ceil((player:getVocation():getRequiredManaSpent(player:getBaseMagicLevel() + 1)) / configManager.getNumber(configKeys.RATE_MAGIC)))
                player:setStorageValue(SKILL_POINTS, points - attributes["magic"].reqPoints)
            else
                sendCancel()
            end
        end
        if buttonId == 2 then
            if points >= attributes["magic"].reqPoints*2 then
                for i = 1,2 do
                    player:addManaSpent(math.ceil((player:getVocation():getRequiredManaSpent(player:getBaseMagicLevel() + 1)) / configManager.getNumber(configKeys.RATE_MAGIC)))
                    player:setStorageValue(SKILL_POINTS, points - attributes["magic"].reqPoints)
                end
            else
                sendCancel()
            end
        end
        if buttonId == 3 then
           if points >= attributes["magic"].reqPoints*5 then
                for i = 1,5 do
                    player:addManaSpent(math.ceil((player:getVocation():getRequiredManaSpent(player:getBaseMagicLevel() + 1)) / configManager.getNumber(configKeys.RATE_MAGIC)))
                    player:setStorageValue(SKILL_POINTS, points - attributes["magic"].reqPoints)
                end
            else
                sendCancel()
            end
        end
    end
    if choiceId == 4 then
        if buttonId == 1 then
            if points >= attributes["sword"].reqPoints then
                addSkills(player, skillids["sword"])
            end
        end
        if buttonId == 2 then
            if points >= attributes["sword"].reqPoints*2 then
                for i = 1,2 do
                    addSkills(player, skillids["sword"])
                end
            else
                sendCancel()
            end
        end
        if buttonId == 3 then
            if points >= attributes["sword"].reqPoints*5 then
                for i = 1,5 do
                    addSkills(player, skillids["sword"])
                end
            else
                sendCancel()
            end
        end
    end
    if choiceId == 5 then
        if buttonId == 1 then
            if points >= attributes["axe"].reqPoints then
                addSkills(player, skillids["axe"])
            end
        else
                sendCancel()
        end
        if buttonId == 2 then
            if points >= attributes["axe"].reqPoints*2 then
                for i = 1,2 do
                    addSkills(player, skillids["axe"])
                end
            else
                sendCancel()
            end
        end
        if buttonId == 3 then
            if points >= attributes["axe"].reqPoints*5 then
                for i = 1,5 do
                    addSkills(player, skillids["axe"])
                end
            else
                sendCancel()
            end
        end
    end
    if choiceId == 6 then
        if buttonId == 1 then
            if points >= attributes["club"].reqPoints then
                addSkills(player, skillids["club"])
            end
        else
            sendCancel()
        end
        if buttonId == 2 then
            if points >= attributes["club"].reqPoints*2 then
                for i = 1,2 do
                    addSkills(player, skillids["club"])
                end
            else
                sendCancel()
            end
        end
        if buttonId == 3 then
            if points >= attributes["club"].reqPoints*5 then
                for i = 1,5 do
                    addSkills(player, skillids["club"])
                end
            else
                sendCancel()
            end
        end
    end
    if choiceId == 7 then
        if buttonId == 1 then
            if points >= attributes["shielding"].reqPoints then
                addSkills(player, skillids["shield"])
            end
        else
            sendCancel()
        end
        if buttonId == 2 then
            if points >= attributes["shielding"].reqPoints*2 then
                for i = 1,2 do
                    addSkills(player, skillids["shield"])
                end
            else
                sendCancel()
            end
        end
        if buttonId == 3 then
            if points >= attributes["shielding"].reqPoints*5 then
                for i = 1,5 do
                    addSkills(player, skillids["shield"])
                end
            else
                sendCancel()
            end
        end
    end
    if choiceId == 8 then
        if buttonId == 1 then
            if points >= attributes["distance"].reqPoints then
                addSkills(player, skillids["dist"])
            end
        else
            sendCancel()
        end
        if buttonId == 2 then
            if points >= attributes["distance"].reqPoints*2 then
                for i = 1,2 do
                    addSkills(player, skillids["dist"])
                end
            else
                sendCancel()
            end
        end
        if buttonId == 3 then
            if points >= attributes["distance"].reqPoints*5 then
                for i = 1,5 do
                    addSkills(player, skillids["dist"])
                end
            else
                sendCancel()
            end
        end
    end
end