QuestHelper_File["help.lua"] = "1.4.1"
QuestHelper_Loadtime["help.lua"] = GetTime()

local QuestHelper_Version = QuestHelper_File["help.lua"]

function QuestHelper:scaleString(val)
  return self:HighlightText(math.floor(val*100+0.5).."%")
end

function QuestHelper:genericSetScale(varname, name, mn, mx, input, onchange, ...)
  if input == "" then
    self:TextOut(string.format("Current %s scale is %s.", name, self:scaleString(QuestHelper_Pref[varname])))
  else
    local scale = tonumber(input)
    
    if not scale then
      local x = string.match(input or "", "^%s*([%d%.]+)%s*%%%s*$")
      scale = tonumber(x) or 0
      if not scale then
        self:TextOut("I don't know how to interpret your input.")
        return
      end
      scale = scale * 0.01
    end
    
    if scale < mn then
      self:TextOut(string.format("I won't accept a scale less than %s.", self:scaleString(mn)))
    elseif scale > mx then
      self:TextOut(string.format("I won't accept a scale more than %s.", self:scaleString(mx)))
    else
      QuestHelper_Pref[varname] = scale
      self:TextOut(string.format("Set %s scale set to %s.", name, self:scaleString(scale)))
      if onchange then
        onchange(...)
      end
    end
  end
end

function QuestHelper:TrackerScale(scale)
  QuestHelper:genericSetScale("track_scale", "tracker scale", .5, 2, scale,
                              function() QuestHelper.tracker:SetScale(QuestHelper_Pref.track_scale) end)
end

function QuestHelper:SetLocale(loc)
  if not loc or loc == "" then
    self:TextOut(QHText("LOCALE_LIST_BEGIN"))
    for loc, tbl in pairs(QuestHelper_Translations) do
      self:TextOut(string.format("  %s%s %s", self:HighlightText(loc),
                                              loc == QuestHelper_Pref.locale and " *" or "  ",
                                              tbl.LOCALE_NAME or "???"))
    end
  else
    for l, tbl in pairs(QuestHelper_Translations) do
      if string.find(string.lower(l), "^"..string.lower(loc)) or
         string.find(string.lower(tbl.LOCALE_NAME or ""), "^"..string.lower(loc)) then
        QuestHelper_Pref.locale = l
        QHFormatSetLocale(l)
        self:SetLocaleFonts()
        self:TextOut(QHFormat("LOCALE_CHANGED", l))
        return
      end
    end
    
    self:TextOut(QHFormat("LOCALE_UNKNOWN", tostring(loc) or "UNKNOWN"))
  end
end

function QuestHelper:ToggleMetric()
  QuestHelper_Pref.metric = not QuestHelper_Pref.metric
  
  if QuestHelper_Pref.metric then
    self:TextOut("Distances are now in metres.")
  else
    self:TextOut("Distances are now in yards.")
  end
end

function QuestHelper:ToggleHide()
  QuestHelper_Pref.hide = not QuestHelper_Pref.hide
  
  -- Desaturate the button texture if QuestHelper is disabled.
  if self.MapButton then
    -- This should always be true, but just in case...
    self.MapButton:GetNormalTexture():SetDesaturated(QuestHelper_Pref.hide)
  end
  
  if QuestHelper_Pref.hide then
    if QuestHelper_Pref.track then
      self:HideTracker()
    end
    
    self.map_overlay:Hide()
    self:TextOut("QuestHelper is now |cffff0000hidden|r.")
  else
    if QuestHelper_Pref.track then
      self:ShowTracker()
    end
    
    self.map_overlay:Show()
    self.minimap_marker:Show()
    self:TextOut("QuestHelper is now |cff00ff00shown|r.")

    QH_Timeslice_Bonus(20)        -- Let the corutine do some overtime...
  end
end

function QuestHelper:ToggleShare()
  QuestHelper_Pref.share = not QuestHelper_Pref.share
  if QuestHelper_Pref.share then
    if QuestHelper_Pref.solo then
      self:TextOut("Objective sharing will been |cff00ff00enabled|r when you disable solo mode.")
    else
      self:TextOut("Objective sharing has been |cff00ff00enabled|r.")
      self:SetShare(true)
    end
  else
    self:TextOut("Objective sharing has been |cffff0000disabled|r.")
    if QuestHelper_Pref.solo then
      self:TextOut("Objective sharing won't be reenabled when you disable solo mode.")
    else
      self:SetShare(false)
    end
  end
end

function QuestHelper:ToggleFlightTimes()
  QuestHelper_Pref.flight_time = not QuestHelper_Pref.flight_time
  if QuestHelper_Pref.flight_time then
    self:TextOut("The flight timer has been |cff00ff00enabled|r.")
  else
    self:TextOut("The flight timer has been |cffff0000disabled|r.")
  end
end

function QuestHelper:ToggleTravelTimes()
  QuestHelper_Pref.travel_time = not QuestHelper_Pref.travel_time
  if QuestHelper_Pref.travel_time then
    self:TextOut("The travel timer has been |cff00ff00enabled|r.")
  else
    self:TextOut("The travel timer has been |cffff0000disabled|r.")
  end
end

function QuestHelper:ToggleTrack()
  QuestHelper_Pref.track = not QuestHelper_Pref.track
  if QuestHelper_Pref.track then
    self:ShowTracker()
    self:TextOut("The quest tracker has been |cff00ff00enabled|r.")
  else
    self:HideTracker()
    self:TextOut("The quest tracker has been |cffff0000disabled|r.")
  end
end

function QuestHelper:ToggleBlizzMap()
  QuestHelper_Pref.blizzmap = not QuestHelper_Pref.blizzmap
  if QuestHelper_Pref.blizzmap then
    self:TextOut("The Blizzard quest points have been |cff00ff00enabled|r.")
  else
    self:TextOut("The Blizzard quest points have been |cffff0000disabled|r.")
  end
  
  if UpdateQuestMapPOI then UpdateQuestMapPOI() end
end

if UpdateQuestMapPOI then
  local uqmp_def = UpdateQuestMapPOI
  function UpdateQuestMapPOI(...)
    if QuestHelper_Pref.blizzmap then
      return uqmp_def(...)
    else
      for i = 1, #QUEST_MAP_POI do
        QUEST_MAP_POI[i]:Hide()
      end
    end
  end
end

function QuestHelper:ToggleTrackLevel()
  QuestHelper_Pref.track_level = not QuestHelper_Pref.track_level
  if QuestHelper_Pref.track_level then
    self:TextOut("Display of levels in the quest tracker has been |cff00ff00enabled|r.")
  else
    self:TextOut("Display of levels in the quest tracker has been |cffff0000disabled|r.")
  end
  QH_UpdateQuests(true)
  QH_Tracker_Rescan()
end

function QuestHelper:ToggleTrackQColour()
  QuestHelper_Pref.track_qcolour = not QuestHelper_Pref.track_qcolour
  if QuestHelper_Pref.track_qcolour then
    self:TextOut("Colour for quest difficulty in quest tracker has been |cff00ff00enabled|r.")
  else
    self:TextOut("Colour for quest difficulty in quest tracker has been |cffff0000disabled|r.")
  end
  QH_UpdateQuests(true)
  QH_Tracker_Rescan()
end

function QuestHelper:ToggleTrackOColour()
  QuestHelper_Pref.track_ocolour = not QuestHelper_Pref.track_ocolour
  if QuestHelper_Pref.track_ocolour then
    self:TextOut("Colour for objective progress in quest tracker has been |cff00ff00enabled|r.")
  else
    self:TextOut("Colour for objective progress in quest tracker has been |cffff0000disabled|r.")
  end
  QH_UpdateQuests(true)
  QH_Tracker_Rescan()
end

function QuestHelper:ToggleTooltip()
  QuestHelper_Pref.tooltip = not QuestHelper_Pref.tooltip
  if QuestHelper_Pref.tooltip then
    self:TextOut("Objective tooltip information has been |cff00ff00enabled|r.")
  else
    self:TextOut("Objective tooltip information has been |cffff0000disabled|r.")
  end
end

function QuestHelper:Purgewarning()
  QuestHelper:TextOut("I would consider this a tragic loss, and would appreciate it if you sent me your saved data before going through with it.")
  QuestHelper:TextOut("Enter "..self:HighlightText("/qh nag verbose").." to check and see if you're destroying anything important.")
  QuestHelper:TextOut("Enter "..self:HighlightText("/qh submit").." for instructions on how to submit your collected data.")
  QuestHelper:TextOut("See the "..self:HighlightText("How You Can Help").." section on the project website for instructions.")
end

function QuestHelper:Purge(code, force, noreload)
  if code == self.purge_code or force then
    QuestHelper_Quests = nil
    QuestHelper_Objectives = nil
    QuestHelper_FlightInstructors = nil
    QuestHelper_FlightRoutes = nil
    QuestHelper_Locale = nil
    QuestHelper_UID = nil
    QuestHelper_Version = nil
    QuestHelper_SaveVersion = nil
    
    QuestHelper_SaveDate = nil
    QuestHelper_SeenRealms = nil
    
    QuestHelper_Collector = nil
    QuestHelper_Collector_Version = nil
    
    QuestHelper_Errors = nil -- sigh
    
    if not noreload then ReloadUI() end
  else
    if not self.purge_code then self.purge_code = self:CreateUID(8) end
    QuestHelper:TextOut("THIS COMMAND WILL DELETE ALL YOUR COLLECTED DATA")
    QuestHelper:Purgewarning()
    QuestHelper:TextOut("If you're sure you want to go through with this, enter: "..self:HighlightText("/qh purge "..self.purge_code))
  end
end

function QuestHelper:HardReset(code)
  if code == self.purge_code then
    self:ResetTrackerPosition() -- do this before we kill off the prefs, since it touches a pref
    QH_Arrow_Reset()
    QuestHelper_Pref = nil
    QuestHelper_ErrorList = nil -- BIZAM
    QuestHelper_KnownFlightRoutes = nil
    QuestHelper_Home = nil
    QuestHelper_CharVersion = nil
    self:Purge(nil, true)
  else
    if not self.purge_code then self.purge_code = self:CreateUID(8) end
    QuestHelper:TextOut("THIS COMMAND WILL DELETE ALL YOUR COLLECTED DATA AND RESET ALL YOUR PREFERENCES")
    QuestHelper:Purgewarning()
    QuestHelper:TextOut("If you're sure you want to go through with this, enter: "..self:HighlightText("/qh hardreset "..self.purge_code))
  end
end

function QuestHelper:ToggleSolo()
  QuestHelper_Pref.solo = not QuestHelper_Pref.solo
  if QuestHelper_Pref.solo then
    if QuestHelper_Pref.share then
      self:SetShare(false)
      self:TextOut("Objective sharing has been temporarly |cffff0000disabled|r.")
    end
    self:TextOut("Solo mode has been |cff00ff00enabled|r.")
  else
    self:TextOut("Solo mode has been |cffff0000disabled|r.")
    if QuestHelper_Pref.share then
      self:SetShare(true)
      self:TextOut("Objective sharing has been re|cff00ff00enabled|r.")
    end
  end
end

function QuestHelper:ToggleAnts()
  if QuestHelper_Pref.show_ants then
    QuestHelper_Pref.show_ants = false
    self:TextOut("Ant trails have been |cffff0000disabled|r.")
  else
    QuestHelper_Pref.show_ants = true
    self:TextOut("Ant trails have been |cff00ff00enabled|r.")
  end
end

function QuestHelper:SetZones()
  if QuestHelper_Pref.zones == "next" then
    QuestHelper_Pref.zones = "none"
    self:TextOut("Next zone display has been |cffff0000disabled|r.")
  else
    QuestHelper_Pref.zones = "next"
    self:TextOut("Next zone display has been |cff00ff00enabled|r.")
  end
end

function QuestHelper:LevelOffset(offset)
  local level = tonumber(offset)
  if level then
    if level > 0 then
      self:TextOut("Allowing quests up to "..self:HighlightText(level).." level"..(level==1 and " " or "s ")..self:HighlightText("above").." you.")
    elseif level < 0 then
      self:TextOut("Only allowing quests "..self:HighlightText(-level).." level"..(level==-1 and " " or "s ")..self:HighlightText("below").." you.")
    else
      self:TextOut("Only allowing quests "..self:HighlightText("at or below").." your current level.")
    end
    
    if not QuestHelper_Pref.filter_level then
      self:TextOut("Note: This won't have any effect until you turn the level filter on.")
    end
    
    if QuestHelper_Pref.level ~= level then
      QuestHelper_Pref.level = level
      QH_Route_Filter_Rescan("filter_quest_level")
    end
  elseif offset == "" then
    if QuestHelper_Pref.level <= 0 then
      self:TextOut("Level offset is currently set to "..self:HighlightText(QuestHelper_Pref.level)..".")
    else
      self:TextOut("Level offset is currently set to "..self:HighlightText("+"..QuestHelper_Pref.level)..".")
    end
    
    if self.party_levels then for n, l in ipairs(self.party_levels) do
      self:TextOut("Your effective level in a "..self:HighlightText(n).." player quest is "..self:HighlightText(string.format("%.1f", l))..".")
    end end
    
    if QuestHelper_Pref.solo then
      self:TextOut("Peers aren't considered in your effective level, because you're playing solo.")
    end
  else
    self:TextOut("Expected a level offset.")
  end
end

function QuestHelper:GroupOffset(offset)
  local group = tonumber(offset)
  if offset == "instance" then group = 5 end
  if offset == "raid" then group = 10 end
  if group == 0 then group = 1 end
  if group then
    self:TextOut("Allowing quests requiring at most "..self:HighlightText(group).." player"..(group==1 and " " or "s ")..".")
    
    if not QuestHelper_Pref.filter_group then
      self:TextOut("Note: This won't have any effect until you turn the group filter on.")
    end
    
    QuestHelper_Pref.filter_group_param = group
    QH_Route_Filter_Rescan("filter_quest_level")
  elseif offset == "" then
    self:TextOut("Group cutoff is currently set to "..self:HighlightText(QuestHelper_Pref.filter_group_param)..".")
  else
    self:TextOut("Expected a player count.")
  end
end

function QuestHelper:Filter(input)
  input = string.upper(input)
  if input == "ZONE" then
    QuestHelper_Pref.filter_zone = not QuestHelper_Pref.filter_zone
    self:TextOut("Filter "..self:HighlightText("zone").." set to "..self:HighlightText(QuestHelper_Pref.filter_zone and "active" or "inactive")..".")
    QH_Route_Filter_Rescan("filter_zone")
  elseif input == "DONE" then
    QuestHelper_Pref.filter_done = not QuestHelper_Pref.filter_done
    self:TextOut("Filter "..self:HighlightText("done").." set to "..self:HighlightText(QuestHelper_Pref.filter_done and "active" or "inactive")..".")
    QH_Route_Filter_Rescan("filter_quest_done")
  elseif input == "LEVEL" then
    QuestHelper_Pref.filter_level = not QuestHelper_Pref.filter_level
    self:TextOut("Filter "..self:HighlightText("level").." set to "..self:HighlightText(QuestHelper_Pref.filter_level and "active" or "inactive")..".")
    QH_Route_Filter_Rescan("filter_quest_level")
  elseif input == "GROUP" then
    QuestHelper_Pref.filter_group = not QuestHelper_Pref.filter_group
    self:TextOut("Filter "..self:HighlightText("group").." set to "..self:HighlightText(QuestHelper_Pref.filter_group and "active" or "inactive")..".")
    QH_Route_Filter_Rescan("filter_quest_group")
  elseif input == "BLOCKED" or input == "BLOCK" then
    QuestHelper_Pref.filter_blocked = not QuestHelper_Pref.filter_blocked
    self:TextOut("Filter "..self:HighlightText("blocked").." set to "..self:HighlightText(QuestHelper_Pref.filter_blocked and "active" or "inactive")..".")
    QH_Route_Filter_Rescan("filter_blocked")
  elseif input == "WATCHED" or input == "WATCH" then
    QuestHelper_Pref.filter_watched = not QuestHelper_Pref.filter_watched
    self:TextOut("Filter "..self:HighlightText("watched").." set to "..self:HighlightText(QuestHelper_Pref.filter_watched and "active" or "inactive")..".")
    QH_Route_Filter_Rescan("filter_quest_watched")
  elseif input == "WINTERGRASP" or input == "WG" then
    QuestHelper_Pref.filter_wintergrasp = not QuestHelper_Pref.filter_wintergrasp
    self:TextOut("Filter "..self:HighlightText("wintergrasp").." set to "..self:HighlightText(QuestHelper_Pref.filter_wintergrasp and "active" or "inactive")..".")
    QH_Route_Filter_Rescan("filter_quest_wintergrasp")
  elseif input == "RAIDACCESSIBLE" or input == "RA" then
    QuestHelper_Pref.filter_raid_accessible = not QuestHelper_Pref.filter_raid_accessible
    self:TextOut("Filter "..self:HighlightText("raidaccessible").." set to "..self:HighlightText(QuestHelper_Pref.filter_raid_accessible and "active" or "inactive")..".")
    QH_Route_Filter_Rescan("filter_quest_raid_accessible")
  elseif input == "" then
    self:TextOut("Filter "..self:HighlightText("zone")..": "..self:HighlightText(QuestHelper_Pref.filter_zone and "active" or "inactive"))
    self:TextOut("Filter "..self:HighlightText("level")..": "..self:HighlightText(QuestHelper_Pref.filter_level and "active" or "inactive"))
    self:TextOut("Filter "..self:HighlightText("group")..": "..self:HighlightText(QuestHelper_Pref.filter_group and "active" or "inactive"))
    self:TextOut("Filter "..self:HighlightText("done")..": "..self:HighlightText(QuestHelper_Pref.filter_done and "active" or "inactive"))
    self:TextOut("Filter "..self:HighlightText("blocked")..": "..self:HighlightText(QuestHelper_Pref.filter_blocked and "active" or "inactive"))
    self:TextOut("Filter "..self:HighlightText("watched")..": "..self:HighlightText(QuestHelper_Pref.filter_watched and "active" or "inactive"))
    self:TextOut("Filter "..self:HighlightText("wintergrasp")..": "..self:HighlightText(QuestHelper_Pref.filter_wintergrasp and "active" or "inactive"))
    self:TextOut("Filter "..self:HighlightText("raidaccessible")..": "..self:HighlightText(QuestHelper_Pref.filter_raid_accessible and "active" or "inactive"))
  else
    self:TextOut("Don't know what you want filtered, expect "..self:HighlightText("zone")..", "..self:HighlightText("done")..", "..self:HighlightText("level")..", "..self:HighlightText("group")..", "..self:HighlightText("blocked")..", "..self:HighlightText("watched")..", "..self:HighlightText("wintergrasp")..", or "..self:HighlightText("raidaccessible")..".")
  end
end

function QuestHelper:ToggleArrow(text)
  if text == "reset" then QH_Arrow_Reset() return end
  
  QuestHelper_Pref.arrow = not QuestHelper_Pref.arrow
  if QuestHelper_Pref.arrow then
    QH_Arrow_Show()
    self:TextOut(QHFormat("SETTINGS_ARROWLINK_ON", QHText("SETTINGS_ARROWLINK_ARROW")))
  else
    self:TextOut(QHFormat("SETTINGS_ARROWLINK_OFF", QHText("SETTINGS_ARROWLINK_ARROW")))
  end
end

function QuestHelper:ToggleRadar(text)
  QuestHelper_Pref.radar = not QuestHelper_Pref.radar
  if QuestHelper_Pref.radar then
    self:TextOut(QHFormat("SETTINGS_RADAR_ON"))
  else
    self:TextOut(QHFormat("SETTINGS_RADAR_OFF"))
  end
end

function QuestHelper:ToggleCartWP()
  QuestHelper_Pref.cart_wp_new = not QuestHelper_Pref.cart_wp_new
  if QuestHelper_Pref.cart_wp_new then
    self:EnableCartographer()
    if Cartographer_Waypoints then
      if Waypoint and Waypoint.prototype then
        self:TextOut("Would use "..self:HighlightText("Cartographer Waypoints").." to show objectives, but another mod is interfering with it.")
      else
        self:TextOut(QHFormat("SETTINGS_ARROWLINK_ON", QHText("SETTINGS_ARROWLINK_CART")))
      end
    else
      self:TextOut("Would use "..self:HighlightText("Cartographer Waypoints").." to show objectives, except it doesn't seem to be present.")
    end
  else
    self:DisableCartographer()
    self:TextOut(QHFormat("SETTINGS_ARROWLINK_OFF", QHText("SETTINGS_ARROWLINK_CART")))
  end
end

function QuestHelper:ToggleTomTomWP()
  QuestHelper_Pref.tomtom_wp_new = not QuestHelper_Pref.tomtom_wp_new
  if QuestHelper_Pref.tomtom_wp_new then
    self:EnableTomTom()
    if TomTom then
      self:TextOut(QHFormat("SETTINGS_ARROWLINK_ON", QHText("SETTINGS_ARROWLINK_TOMTOM")))
    else
      self:TextOut("Would use "..self:HighlightText("TomTom").." to show objectives, except it doesn't seem to be present.")
    end
  else
    self:DisableTomTom()
    self:TextOut(QHFormat("SETTINGS_ARROWLINK_OFF", QHText("SETTINGS_ARROWLINK_TOMTOM")))
  end
end

function QuestHelper:PrintVersion()
  self:TextOut("Version: "..self:HighlightText(GetAddOnMetadata("QuestHelper", "Version") or "Unknown"))
end

local function RecycleStatusString(fmt, usedcount, freetable, usedtable)
  local freetablecount = QuestHelper:TableSize(freetable)
  if usedtable then
    local usedtablecount = QuestHelper:TableSize(usedtable)
    return string.format(fmt, QuestHelper:ProgressString(string.format("%d/%d", usedtablecount, usedtablecount+freetablecount), ((usedtablecount+freetablecount == 0) and 1) or (1-usedtablecount/(usedtablecount+freetablecount)))) .. string.format(" (%d \"leaked\")", usedcount - usedtablecount)
  else
    return string.format(fmt, QuestHelper:ProgressString(string.format("%d/%d", usedcount, usedcount+freetablecount), ((usedcount+freetablecount == 0) and 1) or (1-usedcount/(usedcount+freetablecount))))
  end
end

function QuestHelper:Top(cmd)
  if cmd and string.find(cmd, "all") then
    cmd = cmd .. " collected recycle clear boot usage"
  end

  if cmd and string.find(cmd, "boot") then
    local bootv = {}
    for k, v in pairs(QuestHelper_Loadtime) do
      table.insert(bootv, {time = v, file = k})
    end
    table.sort(bootv, function (a, b) return a.time < b.time end)
    
    if string.find(cmd, "sort") then
      local boott = {}
      for i = 1, #bootv - 1 do
        table.insert(boott, {time = bootv[i + 1].time - bootv[i].time, file = bootv[i].file})
      end
      table.sort(boott, function(a, b) return a.time < b.time end)
    
      for _, v in pairs(boott) do
        QuestHelper:TextOut(string.format("%s: %f", v.file, v.time))
      end
      QuestHelper:TextOut(string.format("%s: shrug", bootv[#bootv].file))
    else
      for i = 1, #bootv do
        QuestHelper:TextOut(string.format("%f: %s", bootv[i].time - bootv[1].time, bootv[i].file))
      end
    end
  end
  
  local pre_ttf
  local pre_db
  if cmd and string.find(cmd, "collected") then
    pre_ttf = self:DumpTableTypeFrequencies(true)
    pre_db = DB_DumpItems()
  end
  
  if cmd and string.find(cmd, "recycle") then
    self:DumpTableTypeFrequencies()
    self:TextOut(RecycleStatusString("Using %s lua tables.", self.used_tables, self.free_tables, self.recycle_tabletyping))
    self:TextOut(RecycleStatusString("Using %s texture objects.", self.used_textures, self.free_textures))
    self:TextOut(RecycleStatusString("Using %s font objects.", self.used_text, self.free_text))
    self:TextOut(RecycleStatusString("Using %s frame objects.", self.used_frames, self.free_frames))
  end
  
  if cmd and string.find(cmd, "usage") then
    self:DumpTableTypeFrequencies()
  end
  
  if cmd and string.find(cmd, "cache") then
    self:DumpCacheData()
  end
  
  if cmd and string.find(cmd, "perf") then
    QH_Timeslice_DumpPerf()
  end
  
  local uncd = 0
  for k, v in pairs(QuestHelper_Collector) do
    if not v.compressed then uncd = uncd + 1 end
  end
  uncd = uncd - 1
  local uncs = ""
  if uncd > 0 then
    uncs = string.format(" (%d uncompressed IDs)", uncd)
  end
  
  UpdateAddOnMemoryUsage()
  local pre_gc = GetAddOnMemoryUsage("QuestHelper")
  
  collectgarbage("collect")
  
  UpdateAddOnMemoryUsage()
  local post_gc = GetAddOnMemoryUsage("QuestHelper")
  
  if cmd and string.find(cmd, "collected") then
    local post_ttf = self:DumpTableTypeFrequencies(true)
    
    local union = {}
    for k, v in pairs(pre_ttf) do union[k] = (pre_ttf[k] or 0) - (post_ttf[k] or 0) end
    for k, v in pairs(post_ttf) do union[k] = (pre_ttf[k] or 0) - (post_ttf[k] or 0) end
    
    local sorted = {}
    for k, v in pairs(union) do
      table.insert(sorted, {k = k, d = v})
    end
    
    table.sort(sorted, function(a, b) return a.d < b.d end)
    for _, v in pairs(sorted) do
      if v.d > 0 then
        QuestHelper:TextOut(string.format("%d: %s", v.d, v.k))
      end
    end
    
    local post_db = DB_DumpItems()
    
    local st = {}
    for k, v in pairs(pre_db) do
      if not post_db[k] then
        table.insert(st, k)
      end
    end
    table.sort(st)
    
    for _, v in ipairs(st) do
      QuestHelper:TextOut("DB: " .. v)
    end
  end
  
  self:TextOut(string.format("QuestHelper is using %dkb (pre-collect %dkb) of RAM (%s/%s/%s/%s)%s", post_gc, pre_gc, QuestHelper_local_version, QuestHelper_toc_version, GetBuildInfo(), GetLocale(), uncs))
  
  if cmd and string.find(cmd, "clear") then
    local cleared = QH_ClearPathcache()
    
    collectgarbage("collect")
    UpdateAddOnMemoryUsage()
    local new_post_gc = GetAddOnMemoryUsage("QuestHelper")
    self:TextOut(string.format("QuestHelper is using %dkb/%dkb/%dkb (%d pathcache cleared) of RAM (%s/%s/%s/%s)%s", pre_gc, post_gc, new_post_gc, cleared, QuestHelper_local_version, QuestHelper_toc_version, GetBuildInfo(), GetLocale(), uncs))
    
    local cleared = QuestHelper:RecycleClear()
    
    collectgarbage("collect")
    UpdateAddOnMemoryUsage()
    local new_post_gc_2 = GetAddOnMemoryUsage("QuestHelper")
    self:TextOut(string.format("QuestHelper is using %dkb/%dkb/%dkb/%dkb (%d recycle cleared) of RAM (%s/%s/%s/%s)%s", pre_gc, post_gc, new_post_gc, new_post_gc_2, cleared, QuestHelper_local_version, QuestHelper_toc_version, GetBuildInfo(), GetLocale(), uncs))
  end
end

function QuestHelper:ToggleMapButton()
  QuestHelper_Pref.map_button = not QuestHelper_Pref.map_button

  if QuestHelper_Pref.map_button then
    QuestHelper:InitMapButton()
    self:TextOut("Map button has been |cff00ff00enabled|r.")
  else
    QuestHelper:HideMapButton()
    self:TextOut("Map button has been |cffff0000disabled|r.  Use '/qh button' to restore it.")
  end
end

function QuestHelper:ChangeLog()
  self:ShowText(QuestHelper_ChangeLog, string.format("QuestHelper %s ChangeLog", QuestHelper_Version))
end

function QuestHelper:Submit()
  self:ShowText([[
|TInterface\AddOns\QuestHelper\Art\Upload.tga:100:300|t
Your data can't be submitted automatically, since AddOns can't interact with anything outside of World of Warcraft.

To do this would require me to create some third party software, and I don't want to include such software with QuestHelper, because that's the kind of thing that ill intended people are likely to tamper with.

World of Warcraft stores QuestHelper's data in a file named |cff40bbffQuestHelper.lua|r.

To find this file, first find the the directory you installed World of Warcraft to. In Windows, this defaults to |cff40bbffC:\Program Files\World of Warcraft|r, and on Mac, I believe this is |cff40bbff/Applications/World of Warcraft|r.

If you're using Windows Vista, Windows might protect the Program Files directory from changes, and redirect Warcraft's saved data to |cff40bbffC:\Users\|cffff8000USER|cff40bbff\AppData\Local\VirtualStore\Program Files\World of Warcraft|r, or possibly |cff40bbffC:\Users\Public\Games\World of Warcraft|r.

In that directory, the needed file is in |cff40bbffWTF/Account/|cffff8000ACCOUNT|cff40bbff/SavedVariables|r, replacing ACCOUNT with the name of your account, and in that directory, you should find |cff40bbffQuestHelper.lua|r.

There are other directories with the names of the realms where your characters are stored, |cffffff00but don't enter them|r. They contain information specific to your characters, such as the flight points they know about, and don't contain the quest information I want.

After you find |cff40bbffQuestHelper.lua|r, you can email it to me here: |cff40bbffqhaddon@gmail.com|r
]], "How To Submit Your Data")
end

function QuestHelper:ShowError(params)
  if params and params == "full" then
    QuestHelper_ErrorCatcher_GenerateReport()
  end
  QuestHelper_ErrorCatcher_ReportError()
end

local commands

function QuestHelper:Help(argument)
  local textblock = {}
  local argument = argument and argument:upper() or ""
  
  for i1, cat in ipairs(commands) do
    local text = string.format("|cffffff00%s|r\n\n", cat[1])
    for i, data in ipairs(cat[2]) do
      if data[1]:find(argument, 1, true) then
        text = string.format("%s    |cffff8000%s|r   %s\n", text, data[1], data[2])
        
        if #data[3] > 0 then
          text = string.format("%s\n      %s\n", text, #data[3] == 1 and "Example:" or "Examples:")
          for i, pair in ipairs(data[3]) do
            text = string.format("%s        |cff40bbff%s|r\n          %s\n", text, pair[1], pair[2])
          end
        end
        
        text = text .. "\n"
      end
    end
    text = text .. "\n\n"
    
    table.insert(textblock, text)
  end
  
  self:ShowText(textblock, "QuestHelper Slash Commands")
end

function QuestHelper:Donate(argument)
  local text = ""
  local argument = argument and argument:upper() or ""
  
  for i1, cat in ipairs(commands) do
    text = string.format("%s|cffffff00%s|r\n\n", text, cat[1])
    for i, data in ipairs(cat[2]) do
      if data[1]:find(argument, 1, true) then
        text = string.format("%s    |cffff8000%s|r   %s\n", text, data[1], data[2])
        
        if #data[3] > 0 then
          text = string.format("%s\n      %s\n", text, #data[3] == 1 and "Example:" or "Examples:")
          for i, pair in ipairs(data[3]) do
            text = string.format("%s        |cff40bbff%s|r\n          %s\n", text, pair[1], pair[2])
          end
        end
        
        text = text .. "\n"
      end
    end
    text = text .. "\n\n"
  end
  
  self:ShowText([[
QuestHelper currently survives on |cffff8000your donations|r. I'm trying to make this into a full-time job so I can add more features and fix bugs, and I can't do that without paying the bills.

There's a lot of stuff I plan to add if I can get enough donations to live off. Some of the most-requested features include:

  |cff40bbffReduced memory and CPU usage for smoother gameplay|r
  
  |cff40bbffFlying mount support for both Northrend and Outland|r
  
  |cff40bbffBetter support for Northrend "phased" quests|r
  
  |cff40bbffAchievementHelper, built right into QuestHelper|r
  
  |cff40bbffPaths that lead you around obstacles instead of through them|r

I can't guarantee these will show up soon, as there's a lot of work involved in them, but every donation - no matter how small - helps!

To donate, open up your web browser and go to |cffff8000http://www.quest-helper.com/donate|r. Enter however much you feel comfortable donating, then bask in the knowledge that you're supporting QuestHelper.

Thanks!]], "Please Donate!", 500, 20, 10)
end

commands =
 {
  { "Common commands", {
    {"HIDDEN",
     "Compiles a list of objectives that QuestHelper is hiding from you. Depending on the reason, you can also unhide the objective.",
     {}, QH_Hidden_Menu},
     
    {"INCOMPLETE",
     "Show start locations of incomplete quests on the main map. Useful for those pursuing the Loremaster achievement.",
     {}, QH_Incomplete},
     
    {"RADAR",
     "Display a guess of your current target's location on the minimap.",
     {}, QuestHelper.ToggleRadar, QuestHelper},
      
    {"FIND",
     "Search for an item, location, or npc.",
     {{"/qh find murloc", "Finds Murlocs. Everyone loves Murlocs."},
      {"/qh find loc stormwind 50 60", "Finds the Stormwind auction house."},
      {"/qh find loc 50 50", "Finds the center of the zone you're in."}
    }, QH_FindName},
    
    {"HIDE",
     "Hides QuestHelper's modifications to the minimap and world map, and pauses routing calculations.",
      {}, QuestHelper.ToggleHide, QuestHelper},
    
    {"ARROW",
     "Toggles Questhelper's built-in directional arrow.",
      {{"/qh arrow reset", "Reset location to the center of the screen."}},
      QuestHelper.ToggleArrow, QuestHelper},
    
    {"METRIC",
     "Toggles distance units between metres and yards.",
     {}, QuestHelper.ToggleMetric, QuestHelper},
    
    {"CARTWP",
     "Toggles displaying the current objective using Cartographer Waypoints (must be installed separately).",
      {}, QuestHelper.ToggleCartWP, QuestHelper},
    
    {"TOMTOM",
     "Toggles displaying the current objective using TomTom (must be installed separately).",
      {}, QuestHelper.ToggleTomTomWP, QuestHelper},
    
    {"SOLO",
     "Toggles solo mode. When enabled, assumes your party members don't exist. Objective sharing with party members will also be disabled.",
      {}, QuestHelper.ToggleSolo, QuestHelper},
  }},

  { "Objective filtering", {
    {"FILTER",
     "Automatically ignores/unignores objectives based on criteria.",
     {
      {"/qh filter level", "Toggle showing objectives that are probably too hard, by considering the levels of you and your party members, and the offset set by the level command."},
      {"/qh filter group", "Toggle showing objectives that require groups. Automatically disables while grouped."},
      
      {"/qh filter zone", "Toggle showing objectives outside the current zone."},
      {"/qh filter done", "Toggle showing objectives for uncompleted quests."},
      
      {"/qh filter blocked", "Toggle showing blocked objectives, such as quest turn-ins for incomplete quests."},
      {"/qh filter watched", "Toggle limiting to objectives watched in the Quest Log"},
      
      {"/qh filter wintergrasp", "Toggle ignoring of PvP Wintergrasp quest objectives while not in Wintergrasp"},
      {"/qh filter raidaccessible", "Toggle ignoring non-raid quests when in a raid"},
      }, QuestHelper.Filter, QuestHelper},
    
    {"LEVEL",
     "Adjusts the level offset used by the level filter. Naturally, the level filter must be turned on to have an effect.",
     {{"/qh level", "See information related to the level filter."},
      {"/qh level 0", "Only allow objectives at or below your current level."},
      {"/qh level +2", "Allow objectives up to two levels above your current level."},
      {"/qh level -1", "Only allow objectives below your current level."}}, QuestHelper.LevelOffset, QuestHelper},
    
    {"GROUP",
     "Adjusts the player cutoff used by the group filter. Naturally, the group filter must be turned on to have an effect.",
     {{"/qh group", "See information related to the group filter."},
      {"/qh group 0", "Only allow objectives that can be done solo."},
      {"/qh group 2", "Allow objectives that require, at most, two groupmembers."},
      {"/qh group 5", "Allow objectives that require, at most, five groupmembers."},
      {"/qh group instance", "Equivalent to /qh group 5."},
      {"/qh group raid", "Equivalent to /qh group 10. All raid quests are currently assumed to be 10-person raids."},
    }, QuestHelper.GroupOffset, QuestHelper},
    
    {"SCALE",
     "Scales the map icons used by QuestHelper. Will accept values between 50% and 300%.",
     {{"/qh scale 1", "Uses the default icon size."},
      {"/qh scale 2", "Makes icons twice their default size."},
      {"/qh scale 80%", "Makes icons slightly smaller than their default size."}},
      QuestHelper.genericSetScale, QuestHelper, "scale", "icon scale", .5, 3},
    
    {"SHARE",
     "Toggles objective sharing between QuestHelper users.",
      {}, QuestHelper.ToggleShare, QuestHelper},
  }},
  
  { "Interface", {
    --[[{"BLIZZMAP",
     "Toggles the visibility of Blizzard's built-in map points.",
     {}, QuestHelper.ToggleBlizzMap, QuestHelper},]]
    
    {"TRACK",
     "Toggles the visibility of the QuestHelper's replacement quest tracker.",
      {}, QuestHelper.ToggleTrack, QuestHelper},
    
    {"TSCALE",
     "Scales the quest tracker provided by QuestHelper. Will accept values between 50% and 300%.",
     {},
     QuestHelper.TrackerScale, QuestHelper},
    
    {"TRESET",
     "Reset's the position of the quest tracker provided by QuestHelper, in cause you move it somewhere inaccessable.",
     {{"/qh treset center", "Resets to the center of the screen, instead of a more normal quest tracker location."}}, QuestHelper.ResetTrackerPosition, QuestHelper},
     
    {"TLEVEL",
     "Toggles display of levels in the quest tracker provided by QuestHelper.",
     {}, QuestHelper.ToggleTrackLevel, QuestHelper},
    
    {"TQCOL",
     "Toggles display of colours for the difficulty level of quests in the quest tracker provided by QuestHelper.",
     {}, QuestHelper.ToggleTrackQColour, QuestHelper},
    
    {"TOCOL",
     "Toggles display of colours for objective progress in the quest tracker provided by QuestHelper.",
     {}, QuestHelper.ToggleTrackOColour, QuestHelper},
     
    {"TOOLTIP",
     "Toggles appending information about tracked items and NPCs to their tooltips.",
      {}, QuestHelper.ToggleTooltip, QuestHelper},
      
    {"FTIME",
     "Toggles display of flight time estimates.", {}, QuestHelper.ToggleFlightTimes, QuestHelper},
    
    {"TRAVELTIME",
     "Toggles display of travel time estimates.", {}, QuestHelper.ToggleTravelTimes, QuestHelper},
    
    {"ANTS",
     "Toggles the display of trails on the world map on and off.",
      {}, QuestHelper.ToggleAnts, QuestHelper},
      
    {"ZONES",
      "Changes the display of the quest objective zones on the main map.",
      {}, QuestHelper.SetZones, QuestHelper},
    
    {"MINIOPACITY",
     "Set the opacity of icons on the minimap.",
      {}, QuestHelper.genericSetScale, QuestHelper, "mini_opacity", "minimap icon opacity", .1, 1.0},
    
    {"LOCALE",
     "Select the locale to use for displayed messages.",
      {}, QuestHelper.SetLocale, QuestHelper},
      
    {"BUTTON",
     "Toggles the display of QuestHelper's button on the world map.",
     {}, QuestHelper.ToggleMapButton, QuestHelper},

    {"SETTINGS",
     "Opens the Settings menu at the current cursor location. Note that not all settings can be changed through the menu.",
     {}, QuestHelper.DoSettingsMenu, QuestHelper},
  }},
  
  { "Data collection", {
    {"SUBMIT",
     "Displays instructions for submitting your collected data.",
     {}, QuestHelper.Submit, QuestHelper},
     
     --[[
    {"NAG",
     "Tells you if you have anything that's missing from the static database. It can only check quests from your own faction, as the quests of your opposing faction are ommitted to save memory.",
       {{"/qh nag verbose", "Prints the specific changes that were found."}}, QuestHelper.Nag, QuestHelper},]]
    
    {"PURGE",
     "Deletes all QuestHelper's collected data.", {}, QuestHelper.Purge, QuestHelper},
    
    {"HARDRESET",
     "Deletes all QuestHelper's collected data and resets QuestHelper preferences.", {}, QuestHelper.HardReset, QuestHelper},
  }},

  { "Performance and debug", {
    {"PERF",
     "Sets or shows the route workload. Higher means more agressive route updating, lower means better performance Accepts numbers between 10% and 500%.",
     {{"/qh perf", "Show current Performance Factor"},
      {"/qh perf 1", "Sets standard performance"},
      {"/qh perf 50%", "Does half as much background processing"},
      {"/qh perf 3", "Computes routes 3 times more aggressively.  Better have some good horsepower!"}},
      QuestHelper.genericSetScale, QuestHelper, "perf_scale_2", "performance factor", .1, 5},
    
    {"PERFLOAD",
       "Sets or shows the initialization workload. Higher numbers will make QuestHelper load faster, lower numbers will result in better framerate while it's loading.",
       {{"/qh perfload", "Show current Performance Factor"},
        {"/qh perfload 1", "Sets standard performance"},
        {"/qh perfload 50%", "Does half as much background processing"},
        {"/qh perfload 3", "Loads 3 times as quickly."}},
        QuestHelper.genericSetScale, QuestHelper, "perfload_scale", "boot performance factor", .2, 5},
      
    {"TOP",
     "Displays various performance stats on QuestHelper.",
      {
        {"/qh top recycle", "Displays detailed information on QuestHelper's recycled item pools"},
        {"/qh top usage", "Displays detailed information on which table types are most common"},
        {"/qh top cache", "Displays detailed information on the internal distance cache"},
        {"/qh top perf", "Displays detailed information on coroutine CPU usage"},
      }, QuestHelper.Top, QuestHelper},
    
    {"ERROR",
     "Displays the first QuestHelper error that has been generated this session in a form which can be copied out of WoW.",
     {}, QuestHelper.ShowError, QuestHelper},
     
    {"POS",
      "Prints the player's current position. Exists mainly for my own personal convenience.",
      {}, function (qh) qh:TextOut(qh:LocationString(qh.i, qh.x, qh.y) .. "   " .. qh:Location_RawString(qh:Location_RawRetrieve()) .. "  " .. qh:Location_AbsoluteString(qh:Location_AbsoluteRetrieve())) end, QuestHelper},
  }},
  
  { "Help", {
    {"HELP",
     "Displays a list of help commands. Listed commands are filtered by the passed string.",
     {}, QuestHelper.Help, QuestHelper},
     
    {"VERSION",
     "Displays QuestHelper's version.", {}, QuestHelper.PrintVersion, QuestHelper},
    
    {"CHANGES",
     "Displays a summary of changes recently made to QuestHelper.",
     {}, QuestHelper.ChangeLog, QuestHelper},
    
    --[[{"DONATE",
     "Displays some instructions and a link for donating.",
     {}, QuestHelper.Donate, QuestHelper},]]
  }},
}

function QuestHelper_SlashCommand(input)
  local _, _, command, argument = string.find(input, "^%s*([^%s]-)%s+(.-)%s*$")
  if not command then
    command, argument = input, ""
  end
  
  command = string.upper(command)
  
  for i1, cat in ipairs(commands) do
    for i, data in ipairs(cat[2]) do
      if data[1] == command then
        local st = {}
        
        for i = 5,#data do table.insert(st, data[i]) end
        table.insert(st, argument)
        
        if type(data[4]) == "function" then
          data[4](unpack(st))
        else
          QuestHelper:TextOut(data[1].." is not yet implemented.")
        end
        
        return
      end
    end
  end
  
  QuestHelper:Help()
end

SLASH_QuestHelper1 = "/qh"
SLASH_QuestHelper2 = "/questhelper"
SlashCmdList["QuestHelper"] = function (text) QuestHelper_SlashCommand(text) end