--- ${PACKAGE_NAME}
-- @file-author@
-- @project-revision@ @project-hash@
-- @file-revision@ @file-hash@
-- Created: 3/26/2016 1:51 AM
local B = select(2,...).frame
local pairs, setmetatable, type, tostring = pairs, setmetatable, type, tostring
local format = string.format
local mod = B:RegisterModule("ObjectiveTracker", _G.VeneerObjectiveWrapper, 'BuffFrame')
local print = B.print('Objectives')
local ObjectiveTrackerFrame, VeneerObjectiveScroll, CreateFrame = ObjectiveTrackerFrame, VeneerObjectiveScroll, CreateFrame

--[[
  Full quest info is available if:
    - It's in the player quest log, or is available from the Gossip interface
    - It's being shared from another player and is acceptible
    - It's an auto-quest that is available in the current location
  Partial quest info is availabe if:
    - It's already completed (i.e. it appears in CompletedQuestInfo()).
    - It's an scheduled interval quest (daily, weekly, etc.)
    - It's contained in a quest link received from chat
  Under any other circumstances, only minimal info can be pulled:
    - Its availability to the player
    - Its relation with the currently engaged NPC
    - Its binary completion status

]]


--- Performance values
--[[
  self:RegisterEvent("QUEST_LOG_UPDATE");
	self:RegisterEvent("TRACKED_ACHIEVEMENT_LIST_CHANGED");
	self:RegisterEvent("QUEST_WATCH_LIST_CHANGED");
	self:RegisterEvent("QUEST_AUTOCOMPLETE");
	self:RegisterEvent("QUEST_ACCEPTED");
	self:RegisterEvent("SUPER_TRACKED_QUEST_CHANGED");
	self:RegisterEvent("SCENARIO_UPDATE");
	self:RegisterEvent("SCENARIO_CRITERIA_UPDATE");
	self:RegisterEvent("TRACKED_ACHIEVEMENT_UPDATE");
	self:RegisterEvent("ZONE_CHANGED_NEW_AREA");
	self:RegisterEvent("ZONE_CHANGED");
	self:RegisterEvent("QUEST_POI_UPDATE");
	self:RegisterEvent("VARIABLES_LOADED");
	self:RegisterEvent("QUEST_TURNED_IN");
	self:RegisterEvent("PLAYER_MONEY");
 ]]
mod.Reason ={
  UPDATE_MASK_AUTOQUEST            = 0x00000001,
  UPDATE_MASK_QUEST                = 0x00000002,
  UPDATE_MASK_BONUS                = 0x00000004,
  UPDATE_MASK_CHEEVS               = 0x00000008,
  UPDATE_MASK_ALL                  = 0x00000017,

  QUEST_LOG_UPDATE                 = 0x00000003,
  TRACKED_ACHIEVEMENT_LIST_CHANGED = 0x00000008,
  QUEST_WATCH_LIST_CHANGED         = 0x00000003,
  QUEST_AUTOCOMPLETE               = 0x00000003,
  QUEST_ACCEPTED                   = 0x00000003,
  SUPER_TRACKED_QUEST_CHANGED      = 0x00000002,
  SCENARIO_UPDATE                  = 0x00000004,
  SCENARIO_CRITERIA_UPDATE         = 0x00000004,
  TRACKED_ACHIEVEMENT_UPDATE       = 0x00000008,
  ZONE_CHANGED_NEW_AREA            = 0x00000017,
  ZONE_CHANGED                     = 0x00000017,
  QUEST_POI_UPDATE                 = 0x00000003,
  QUEST_TURNED_IN                  = 0x00000003,
}
mod.MoneyReasons = 0

--- Baseline defaults
mod.defaults = {}

--- list used to make things happen
mod.orderedNames = {'Bonus', 'AutoQuest', 'Quest', 'Cheevs'}

--- ipairs() list of handlers for wrapper update
mod.orderedHandlers = {}
mod.orderedTrackers = {}
mod.indexedTrackers = {}
--- pairs() list of handler frames for tracker updates
mod.namedTrackers = {}

--- Handler stubs
mod.AutoQuest = {
  name = "AutoQuest",
  displayName = "Notice",
}
mod.Quest = {
  name = "Quest",
  displayName = "Quests",
}
mod.Cheevs = {
  name = "Cheevs",
  displayName = "Achievements",
}
mod.Bonus = {
  name = "Bonus",
  displayName = "Bonus Objectives",
}

--- Handler template
local CreateHandler = function (self, name, index)
  print(self, name)

  local handler = setmetatable(mod[name] or {}, {
    __tostring = function() return name end,
    __call = function (self) mod.UpdateTracker(self) end
  })
  if type(mod.orderedHandlers[index]) == 'table' then
    return mod.orderedHandlers[index]
  end

  print('take up locals first')
  local preset = {}
  for k,v in pairs(mod[name]) do
    preset[k] = true
    if type(v) == 'table' then
      handler[k] = {}
    else
      handler[k] = v
    end
  end


  print('resulting handler contents')
  for k, v in pairs(self) do
    if not handler[k] then
      if type(v) == 'table' then
        -- assume all tables to be local data; don't inherit or ref
        handler[k] = {}
      else
        handler[k] = mod.Tracker[k]
      end
    else
      print(name, 'has its own', k)
    end
  end
  print('|cFFFF4400'..tostring(name)..'|r:')
  for k, v in pairs(handler) do
    print(format("%24s %8s %s", (preset[k] and '|cFFFFFFFF' or '|cFFFFFF00') .. k .. '|r', type(v), tostring(v)))
  end

  mod[name] = handler

  mod.orderedHandlers[index] = handler
  return true
end

mod.Tracker = setmetatable({}, {
  __call = CreateHandler,
  __tostring = function() return 'DEFAULT_TRACKING_HANDLER' end
})
local Tracker = mod.Tracker
Tracker.numWatched = 0   --- number of entries being handled
Tracker.numBlocks = 0    --- number of blocks created
Tracker.actualBlocks = 0 --- number of blocks in use

Tracker.freeBlocks = {}  --- block heap
Tracker.usedBlocks = {}

Tracker.Watched = {}     -- find by watchIndex
Tracker.Info = {}        -- find by data ID
Tracker.BlockInfo = {}   -- find by block ID
Tracker.WatchInfo = {}   -- find data  by watch index
Tracker.WatchBlock = {}  -- find block by watch index



Tracker.GetBlock = function(handler, blockIndex)
  local block = handler.usedBlocks[blockIndex]
  if not handler.usedBlocks[blockIndex] then
    if #handler.freeBlocks >= 1 then
      block = handler.freeBlocks[#handler.freeBlocks]
      handler.freeBlocks[#handler.freeBlocks] = nil
    else
      block = CreateFrame('Frame', 'Veneer'..tostring(handler)..'Block'..blockIndex, VeneerObjectiveScroll, 'VeneerTrackerBlock')
      block.SetStyle = mod.SetBlockStyle
      block.Select = handler.Select
      block.Open = handler.Open
      block.Remove = handler.Remove
      block.Link = handler.Link
      block:SetScript('OnMouseUp', handler.OnMouseUp)
      block:SetScript('OnMouseDown', handler.OnMouseDown)
      block:ClearAllPoints()
    end

    handler.usedBlocks[blockIndex] = block
  end
  return handler.usedBlocks[blockIndex]
end

function mod:OnInitialize()
  self.InitializeWrapper()
  self.InitializeXPTracker()
  mod.SetEvents()
  ObjectiveTrackerFrame:UnregisterAllEvents()
  ObjectiveTrackerFrame:Hide()
end