--[[--------------------------------------------------------------------------
  ManiaxUpgrades - namespace, settings and the slash command.

  The add-on annotates the tooltip of an item that mod-upgrade-kits has
  upgraded: the rank word under the name, and the stats the upgrade added.
  Everything it needs is local - the clone id table ships with it (Clones.lua),
  and the base item's numbers come from the client's own item cache. There is
  no addon channel, no server round-trip and no chat output.
----------------------------------------------------------------------------]]

ManiaxUpgrades = ManiaxUpgrades or {}
local NS = ManiaxUpgrades

NS.VERSION = "1.0.0"

-- Rank word for the line under the name. Daniel's ruling from the Ascension
-- reference screenshot: every rank prints in the same green as their
-- "Superior" line, not tiered by rank - so there is no per-rank colour here
-- any more, only the word. See NS.BONUS_COLOR.
NS.RANKS = {
  [1] = { word = "Worn" },
  [2] = { word = "Glimmering" },
  [3] = { word = "Radiant" },
  [4] = { word = "Pristine" },
}

-- The upgrade tint - the rank word, every stat/armor/damage line the upgrade
-- added or increased, and any random-suffix line the base item doesn't have.
-- Matches Ascension's own "Superior" quality green (Daniel's reference
-- screenshot), on purpose: the point is no longer "a colour nothing else
-- uses", it is "the same green their own UI already uses for an addition".
NS.BONUS_COLOR = "1eff00"

-- Trailing " (Rank N)" is stripped from the name line. The clones are being
-- renamed server-side so their names equal the base's; this handles a client
-- whose itemcache still holds the old name, and costs nothing once they all do.
NS.RANK_SUFFIX = "%s*%(Rank%s+%d+%)%s*$"

local function Print(msg)
  DEFAULT_CHAT_FRAME:AddMessage("|cff00ff00Maniax|r Upgrades: " .. msg)
end
NS.Print = Print

function NS:Debug(msg)
  if ManiaxUpgradesDB and ManiaxUpgradesDB.debug then
    Print(msg)
  end
end

--- Resolve an item id to its base entry and rank.
-- Arithmetic, not a per-clone table: every base owns four consecutive entries
-- and both reserved blocks start on a multiple of four. Clones.lua's generator
-- refuses to emit unless that holds for all of them.
-- @return baseEntry, rank  or nil when the id is not a clone.
function NS:Resolve(itemId)
  if not itemId then return nil end
  if itemId < self.CLONE_MIN or itemId > self.CLONE_MAX then return nil end
  local offset = itemId % 4
  local base = self.CloneBase[itemId - offset]
  if not base then return nil end
  return base, offset + 1
end

local loader = CreateFrame("Frame")
loader:RegisterEvent("ADDON_LOADED")
loader:SetScript("OnEvent", function(_, _, addon)
  if addon ~= "ManiaxUpgrades" then return end
  ManiaxUpgradesDB = ManiaxUpgradesDB or {}
  if ManiaxUpgradesDB.debug == nil then ManiaxUpgradesDB.debug = false end
  loader:UnregisterEvent("ADDON_LOADED")
end)

SLASH_MANIAXUPGRADES1 = "/mxu"
SlashCmdList["MANIAXUPGRADES"] = function(msg)
  local cmd = string.lower(strtrim(msg or ""))
  if cmd == "debug" then
    ManiaxUpgradesDB = ManiaxUpgradesDB or {}
    ManiaxUpgradesDB.debug = not ManiaxUpgradesDB.debug
    Print("debug " .. (ManiaxUpgradesDB.debug and "on" or "off"))
  else
    Print("version " .. NS.VERSION .. ", " .. (NS.CLONE_COUNT or 0) ..
          " upgrade entries known. /mxu debug toggles diagnostics.")
  end
end