-- Innervate Callout Module
-- Announces Innervate casts via raid/party/battleground chat
-- Registers AURA_CAST events directly - zero polling, pure event-driven

pfUI:RegisterModule("innervatecall", function ()
  -- Requires Nampower for AURA_CAST events
  if not GetNampowerVersion then return end

  -- Only load for druids
  if UnitClassBase("player") ~= "DRUID" then return end

  local INNERVATE_SPELLID = 29166

  -- GUID → name resolution for the target. UnitTokenFromGUID walks the
  -- engine's known unit tokens (player, party, raid, target, ...) and
  -- returns the first one currently bound to the GUID, so we don't have
  -- to manually iterate party/raid here.
  local function ResolveTargetName(targetGuid)
    if not targetGuid then return nil end
    local token = UnitTokenFromGUID(targetGuid)
    return token and UnitName(token) or nil
  end

  -- Determine chat channel based on group context
  local function GetAnnounceChannel()
    local _, instanceType = IsInInstance()
    if instanceType == "pvp" then
      return "BATTLEGROUND"
    end

    if IsInRaid() then
      return "RAID"
    end

    if IsInGroup() then
      return "PARTY"
    end

    return nil
  end

  -- Event frame - registers AURA_CAST directly (bypasses libdebuff hooks
  -- which are gated behind ownDebuffs/pendingCasts checks meant for debuffs)
  local frame = CreateFrame("Frame")
  -- AURA_CAST_ON_SELF fires when a buff lands ON the player
  -- AURA_CAST_ON_OTHER fires when a buff lands on someone else
  -- Both needed: self-innervate = ON_SELF, innervate on others = ON_OTHER
  -- casterGuid check prevents announcing other druids' innervates
  frame:RegisterEvent("AURA_CAST_ON_SELF")
  frame:RegisterEvent("AURA_CAST_ON_OTHER")
  frame:RegisterEvent("PLAYER_LOGOUT")
  frame:SetScript("OnEvent", function()
    if event == "PLAYER_LOGOUT" then
      this:UnregisterAllEvents()
      this:SetScript("OnEvent", nil)
      return
    end

    -- AURA_CAST args: arg1=spellId, arg2=casterGuid, arg3=targetGuid
    local spellId = arg1
    local casterGuid = arg2
    local targetGuid = arg3

    if spellId ~= INNERVATE_SPELLID then return end

    -- Only announce our own casts
    if not IsPlayerGuid(casterGuid) then return end

    -- Resolve target name from GUID
    local targetName = ResolveTargetName(targetGuid) or "Unknown"

    -- Determine channel
    local channel = GetAnnounceChannel()
    if not channel then return end -- solo, no announcement

    SendChatMessage(">> Innervate casted on " .. targetName .. " <<", channel)

    -- Schedule "ready" announcement when the cooldown expires. Read the
    -- precise remaining time from C_Spell.GetSpellCooldown (startTime and
    -- duration are seconds from the GetTime epoch); fall back to 360s.
    local cdRemaining = 360
    local cd = C_Spell.GetSpellCooldown(INNERVATE_SPELLID)
    if cd and cd.duration and cd.duration > 0 then
      local remaining = cd.startTime + cd.duration - GetTime()
      if remaining > 0 then cdRemaining = remaining end
    end

    C_Timer.After(cdRemaining, function()
      local ch = GetAnnounceChannel()
      if ch then
        SendChatMessage(">> Innervate is ready <<", ch)
      end
    end)
  end)
end)