-----------------------------------------------------------------------
-- Upvalued Lua API.
-----------------------------------------------------------------------
local _G = getfenv(0)

local bit = _G.bit


-----------------------------------------------------------------------
-- AddOn namespace.
-----------------------------------------------------------------------
local ADDON_NAME, private = ...

local LibStub = _G.LibStub


-----------------------------------------------------------------------
-- Constants.
-----------------------------------------------------------------------
private.wow_version, private.build_num = _G.GetBuildInfo()

private.UNIT_TYPES = {
    PLAYER = 0,
    OBJECT = 1,
    UNKNOWN = 2,
    NPC = 3,
    PET = 4,
    VEHICLE = 5,
}


private.UNIT_TYPE_NAMES = {
    "PLAYER",
    "OBJECT",
    "UNKNOWN",
    "NPC",
    "PET",
    "VEHICLE",
}


private.ACTION_TYPE_FLAGS = {
    ITEM = 0x00000001,
    NPC = 0x00000002,
    OBJECT = 0x00000004,
    ZONE = 0x00000008,
}


private.SPELL_LABELS_BY_NAME = {
    [_G.GetSpellInfo(13262)] = "DISENCHANT",
    [_G.GetSpellInfo(4036)] = "ENGINEERING",
    [_G.GetSpellInfo(7620)] = "FISHING",
    [_G.GetSpellInfo(2366)] = "HERB_GATHERING",
    [_G.GetSpellInfo(51005)] = "MILLING",
    [_G.GetSpellInfo(605)] = "MIND_CONTROL",
    [_G.GetSpellInfo(2575)] = "MINING",
    [_G.GetSpellInfo(3365)] = "OPENING",
    [_G.GetSpellInfo(921)] = "PICK_POCKET",
    [_G.GetSpellInfo(31252)] = "PROSPECTING",
    [_G.GetSpellInfo(73979)] = "SEARCHING_FOR_ARTIFACTS",
    [_G.GetSpellInfo(8613)] = "SKINNING",
}

local AF = private.ACTION_TYPE_FLAGS

private.SPELL_FLAGS_BY_LABEL = {
    DISENCHANT = AF.ITEM,
    ENGINEERING = AF.NPC,
    FISHING =  AF.ZONE,
    HERB_GATHERING = bit.bxor(AF.NPC, AF.OBJECT),
    MILLING = AF.ITEM,
    MIND_CONTROL = AF.NPC,
    MINING = bit.bxor(AF.NPC, AF.OBJECT),
    OPENING = AF.OBJECT,
    PICK_POCKET = AF.NPC,
    PROSPECTING = AF.ITEM,
    SEARCHING_FOR_ARTIFACTS = AF.OBJECT,
    SKINNING = AF.NPC,
}