Main.lua

local addonName, addon = ...
local eventHandler = CreateFrame("Frame")

addon.CreateNewMap = function(mapID, mapName)
    ExpBuddyDataDB[mapID] = {}
    ExpBuddyDataDB[mapID].mapName = mapName
    ExpBuddyDataDB[mapID].entryLevel = addon.playerLevel
    ExpBuddyDataDB[mapID].exitLevel = 0
    ExpBuddyDataDB[mapID].Exploration = 0
    ExpBuddyDataDB[mapID].Monsters = 0
    ExpBuddyDataDB[mapID].Nodes = 0
    ExpBuddyDataDB[mapID].Rested = 0
    ExpBuddyDataDB[mapID].Quests = 0
end

eventHandler:RegisterEvent("ADDON_LOADED")
eventHandler:RegisterEvent("PLAYER_LEVEL_CHANGED")
eventHandler:RegisterEvent("PLAYER_LOGIN")
eventHandler:RegisterEvent("QUEST_ACCEPTED")
eventHandler:RegisterEvent("ZONE_CHANGED")
eventHandler:RegisterEvent("ZONE_CHANGED_NEW_AREA")
eventHandler:SetScript("OnEvent", function(self, event, ...)
    if event == "ADDON_LOADED" then
        local addonLoaded = ...
        if addonLoaded == addonName then
            -- Make a table for the entire addon to use, namely for functions
            -- but other stuff can be put in here too.
            ExpBuddy = {}

            -- Initialize the addon's saved variables.
            if ExpBuddyQuestDB == nil then
                ExpBuddyQuestDB = {}
            end
            if ExpBuddyPositionDB == nil then
                ExpBuddyPositionDB = {}
            end
            if ExpBuddyDataDB == nil then
                ExpBuddyDataDB = {}
            end

            -- Unregister the event for performance.
            eventHandler:UnregisterEvent("ADDON_LOADED")
        end
    end
    if event == "PLAYER_LEVEL_CHANGED" then
        local _, newLevel = ...
        if newLevel then
            addon.playerLevel = newLevel
        end
        if newLevel == GetMaxLevelForPlayerExpansion() then
            -- The player is max level, so unregister the event.
            eventHandler:UnregisterEvent("PLAYER_LEVEL_CHANGED")
        end
    end
    if event == "PLAYER_LOGIN" then
        C_Timer.After(0.5, function()
            local mapID = C_Map.GetBestMapForUnit("player")
            -- If the mapID is valid, then set addon.mapID and
            -- create the map table if it doesn't exist.
            if mapID then
                local mapInfo = C_Map.GetMapInfo(mapID)
                if mapInfo.mapType == 3 then -- It's a zone!
                    addon.mapID = mapID
                    if not ExpBuddyDataDB[addon.mapID] then
                        addon.CreateNewMap(addon.mapID, mapInfo.name)
                    end
                    addon.RefreshFrame(addon.mapID)
                elseif mapInfo.mapType == 5 or mapInfo.mapType == 6 then
                    addon.mapID = mapInfo.parentMapID
                    local name = C_Map.GetMapInfo(addon.mapID).name
                    if not ExpBuddyDataDB[addon.mapID] then
                        addon.CreateNewMap(addon.mapID, name)
                    end
                    addon.RefreshFrame(addon.mapID)
                end
            else
                ExpBuddy.Print("The current map could not be added. Please leave the zone and return or try a reload.")
            end

            -- Get some information about the current character.
            addon.playerLevel = UnitLevel("player")

            -- Unregister the event for performance.
            eventHandler:UnregisterEvent("PLAYER_LOGIN")

            if addon.playerLevel == GetMaxLevelForPlayerExpansion() then
                -- The player is max level, so unregister the event.
                eventHandler:UnregisterEvent("PLAYER_LEVEL_CHANGED")
            end
        end)
    end
    if event == "QUEST_ACCEPTED" then
        local questID = ...
        if not ExpBuddyQuestDB[questID] then
            ExpBuddyQuestDB[questID] = addon.mapID
        end
    end
    if event == "ZONE_CHANGED" or event == "ZONE_CHANGED_NEW_AREA" then
        C_Timer.After(0.5, function()
            local mapID = C_Map.GetBestMapForUnit("player")
            -- If the mapID is valid, then set addon.mapID and
            -- create the map table if it doesn't exist.
            if mapID then
                local mapInfo = C_Map.GetMapInfo(mapID)
                if mapInfo.mapType == 3 then -- It's a zone!
                    addon.mapID = mapID
                    if not ExpBuddyDataDB[addon.mapID] then
                        addon.CreateNewMap(addon.mapID, mapInfo.name)
                    end
                    addon.RefreshFrame(addon.mapID)
                elseif mapInfo.mapType == 5 or mapInfo.mapType == 6 then
                    addon.mapID = mapInfo.parentMapID
                    local name = C_Map.GetMapInfo(addon.mapID).name
                    if not ExpBuddyDataDB[addon.mapID] then
                        addon.CreateNewMap(addon.mapID, name)
                    end
                    addon.RefreshFrame(addon.mapID)
                end
            else
                ExpBuddy.Print("The current map could not be added. Please leave the zone and return or try a reload.")
            end
        end)
    end
end)