require("global");

properties = {
    permissions = 0,
    parameters = "ssss",
    description =
[[
Add/Remove/Complete Quests, modify <sequence> and <flag 0-32>.
!quest <quest> <add/remove> <#> |
!quest <quest> <sequence> <#> |
!quest <quest> <flag> <#> true/false |
]],
}

function onTrigger(player, argc, quest, command, var1, var2)

    local messageID = MESSAGE_TYPE_SYSTEM_ERROR;
    local sender = "[quest] ";
    local message = "Error";
    local questId = tonumber(quest);
    
    if (type(questId) == "number") then
        if (questId < 110001 or questId > 110001 + 2048) and player then
            player:SendMessage(messageID, sender, "Invalid questId entered");
            player:SendMessage(messageID, sender, argc);
            return;
        else
            if (command == "add" or command == "give" or command == "+") then
                message = addQuest(player, questId);
            elseif (command == "remove" or command == "delete" or command == "-") then
                message = removeQuest(player, questId);
            elseif (command == "complete" or command == "completed" or command == "finish") then
                message = setQuestCompletion(player, argc, questId, var1);
            elseif (command == "info") then
                message = getQuestInfo(player, questId);
            elseif (command == "seq" or command == "sequence") then
                message = setQuestSequence(player, questId, tonumber(var1));
            elseif (command == "flag") then
                message = setQuestFlag(player, questId, var1, var2);
            elseif (command == "counter" or command == "count") then
                message = setQuestCounter(player, questId, var1, var2);
            else
                message = ("Error: Command "..command.." not recognized");
            end 
        end
    else
        message = ("Error: Quest id must be a valid number.")
    end
    
    player:SendMessage(messageID, sender, message);
end



function addQuest(player, questId)
    if (not (player:HasQuest(questId))) then
        player:AddQuest(questId);
        return string.format("Adding quest "..player:GetQuest(questId).name.." ["..questId.."]");
    else
        return string.format("Already have quest "..player:GetQuest(questId).name.." ["..questId.."]");
    end
end

function removeQuest(player, questId)
    if (player:HasQuest(questId)) then
        local questName = player:GetQuest(questId).name;
        player:RemoveQuest(questId);
        return string.format("Removing quest "..questName.." ["..questId.."]");
    else
        return string.format("Error: Either incorrect ID or quest "..questId.." isn't active on character.");
    end
end

function setQuestCompletion(player, argc, questId, flag)
    
    if (argc == 2) then -- No flag entered -> Return state of the quest's completion.
        return string.format("Quest %d completion is set to: %s", questId, tostring(player:IsQuestCompleted(questId)));
    else 
        local boolFlag = false;
        
        if (flag == "true" or flag == "1" or flag == "on" or flag == "O") then
            boolFlag = true;
        elseif (flag == "false" or flag == "0" or flag == "off" or flag == "X") then
            boolFlag = false;
        elseif flag == "flip" or flag == "toggle" then
            boolFlag = not player:IsQuestCompleted(questId);
        else -- A catch for bad inputs
            return string.format("Error: Invalid flag entered");
        end
        
        player:SetQuestComplete(questId, boolFlag);		
        return string.format("Quest %d completion set to: %s", questId, tostring(player:IsQuestCompleted(questId)));

    end
end

function setQuestSequence(player, questId, sequence)
    if (type(sequence) == "number") then
        if (player:HasQuest(questId)) then
            local seq = math.floor(tonumber(sequence));
            if (seq >= 0 and seq <= 65535) then
                player:GetQuest(questId):StartSequence(seq);
                return string.format("Changing sequence of quest "..player:GetQuest(questId).name.." ["..questId.."] to "..seq);
            else
                return string.format("Error: Sequence value must be within 0-65535."); 
            end
        else
            return string.format("Sequence error: either incorrect ID or quest "..questId.." isn't active on character");
        end
    else
        return string.format("Error: Sequence value must be a valid number.");
    end
end

function setQuestFlag(player, questId, flagNum, flagCmd)
    local questvar = questId;
    local flagvar = tonumber(flagNum);
    local boolvar = 0;

    if (player:HasQuest(questvar)) then
        if (flagvar >= 0 and flagvar <= 31) then
             
            if flagCmd == "true" or flagCmd == "1" or flagCmd == "on" or flagCmd == "O" then
                boolvar = true;                       
            elseif flagCmd == "false" or flagCmd == "0" or flagCmd == "off" or flagCmd == "X" then
                boolvar = false;
            elseif flagCmd == "flip" or flagCmd == "toggle" then
                boolvar = not player:GetQuest(questvar):GetData():GetFlag(flagvar);
            else
                return "Error: Flag: Boolean not recognized."
            end

            currentFlagState =  player:GetQuest(questvar):GetData():GetFlag(flagvar);
            
            if (currentFlagState ~= boolvar) then
                
                if (boolvar == true) then
                    player:GetQuest(questvar):GetData():SetFlag(flagvar);
                else
                    player:GetQuest(questvar):GetData():ClearFlag(flagvar);
                end
                player:GetQuest(questvar):UpdateENPCs();
                player:GetQuest(questvar):GetData():Save();	
                if boolvar == true then
                    return string.format("Changing flag "..tonumber(flagNum).." to true on quest "..questvar);
                else
                    return string.format("Changing flag "..tonumber(flagNum).." to false on quest "..questvar);
                end
            else
                return string.format("Error: Flag "..flagvar.." is already set to that state on quest "..questvar);
            end  
        else
            return string.format("Error: Flag "..flagNum.." is not within the valid range of 0-31.");
        end
    else
        return string.format("Error: Either incorrect ID or quest "..tostring(questId).." isn't active on character."); 
    end        
    
end

function setQuestCounter(player, questId, counterSlot, counterValue)
    local cSlot = tonumber(counterSlot) or nil;
    local cVal = tonumber(counterValue) or nil;
    
    if (cSlot ~= nil and cSlot >= 0 and cSlot <= 3) then
        if (cVal ~= nil and cVal >= 0 and cVal <= 255) then
            player:GetQuest(questId):GetData():SetCounter(cSlot, cVal);
            player:GetQuest(questId):UpdateENPCs();
            player:GetQuest(questId):GetData():Save();	

            return string.format("Changing counter "..cSlot.." to "..cVal);
        else
            return string.format("Error: Invalid counter value.  Must be between 0-255.");
        end
    else
        return string.format("Error: Invalid counter index.  Must be between 0-3.");
    end
end


function getQuestInfo(player, questId)
    if player:HasQuest(questId) then
        quest = player:GetQuest(questId);										

        local msg = "";
        local flagStr = "";
        
        for i=0,31,1 do 
            if (quest:GetData():GetFlag(i)) then
                flagStr = flagStr .. "O";
            else
                flagStr = flagStr .. "X";
            end
            if (i == 15) then
                flagStr = flagStr .. "\n";
            end
        end
        
        local data = quest:GetData();
        
        msg = string.format("Info for quest %s [%d]\n", quest.Name, quest:GetQuestId());
        msg = msg .. string.format("Flags \\\\ Current Sequence: %d\n", quest:getSequence());
        msg = msg .. string.format("%s\n", flagStr)
        msg = msg .. string.format("Counters: %d,%d,%d,%d", data:getCounter(0), data:getCounter(1), data:getCounter(2), data:getCounter(3));
        return msg;
    else
        return string.format("Quest not active: "..questId);
    end
end