SLASH_RELOAD1 = '/rl'
function SlashCmdList.RELOAD(msg, editbox)
  ReloadUI()
end

SLASH_PFUI1 = '/pfui'
function SlashCmdList.PFUI(msg, editbox)
  if pfUI.gui:IsShown() then
    pfUI.gui:Hide()
  else
    pfUI.gui:Show()
  end
end

SLASH_GM1, SLASH_GM2 = '/gm', '/support'
function SlashCmdList.GM(msg, editbox)
  ToggleHelpFrame(1)
end

pfUI = CreateFrame("Frame", nil, UIParent)
pfUI:RegisterEvent("ADDON_LOADED")

-- setup bootvar
pfUI.bootup = true

do
  -- ClassicAPI dependency check.
  -- pfUI relies pervasively on the modern C_* / SuperWoW / nameplate / focus
  -- API surface that ClassicAPI polyfills, so presence is required.
  local PFUI_CLASSIC_API_MIN     = 10503  -- (X*10000 + Y*100 + Z)
  local PFUI_CLASSIC_API_LATEST  = PFUI_CLASSIC_API_MIN
  local PFUI_CLASSIC_API_WEBSITE = "https://github.com/brues-code/ClassicAPI"
  local PFUI_CLASSIC_API_LATEST_URL = PFUI_CLASSIC_API_WEBSITE .. "/releases/latest"
  local function FormatVersion(packed)
    local x = math.floor(packed / 10000)
    local y = math.floor(math.mod(packed, 10000) / 100)
    local z = math.mod(packed, 100)
    return string.format("v%d.%d.%d", x, y, z)
  end
  if not CLASSIC_API_VERSION or CLASSIC_API_VERSION < PFUI_CLASSIC_API_MIN then
    local minVersion = FormatVersion(PFUI_CLASSIC_API_MIN)
    pfUI.disabled = true
    EventUtil.ContinueOnPlayerLogin(function()
      StaticPopupDialogs["PFUI_CLASSICAPI_REQUIRED"] = {
        text = "This fork of |cff33ffccpf|cffffffffUI|r requires ClassicAPI\n " .. minVersion .. " or newer.\n\nAll |cff33ffccpf|cffffffffUI|r modules have been disabled.\nInstall ClassicAPI from:",
        button1 = OKAY,
        hasEditBox = 1,
        editBoxWidth = 280,
        timeout = 0,
        whileDead = 1,
        hideOnEscape = 1,
        preferredIndex = 3,
        OnShow = function()
          local editBox = _G[this:GetName().."EditBox"]
          if editBox then
            editBox:SetText(PFUI_CLASSIC_API_LATEST_URL)
            editBox:HighlightText()
            editBox:SetFocus()
          end
        end,
      }
      StaticPopup_Show("PFUI_CLASSICAPI_REQUIRED")
      DEFAULT_CHAT_FRAME:AddMessage(
        "This fork of |cff33ffccpf|cffffffffUI|r requires ClassicAPI " .. minVersion .. "+. Get it at " .. PFUI_CLASSIC_API_LATEST_URL,
        1, 0.3, 0.3
      )
    end)
  elseif CLASSIC_API_VERSION < PFUI_CLASSIC_API_LATEST then
    EventUtil.ContinueOnPlayerLogin(function()
      C_Timer.After(8, function()
        DEFAULT_CHAT_FRAME:AddMessage(
          "|cff33ffccpf|rUI: ClassicAPI " .. FormatVersion(PFUI_CLASSIC_API_LATEST) .. " is available — " .. PFUI_CLASSIC_API_LATEST_URL,
          1, 0.85, 0.3
        )
      end)
    end)
  end
end

-- initialize saved variables
pfUI_playerDB = {}
pfUI_config = {}
pfUI_init = {}
pfUI_profiles = {}
pfUI_addon_profiles = {}
pfUI_cache = {}
pfUI_throttle = {}

-- localization
pfUI_locale = {}
pfUI_translation = {}

-- initialize default variables
pfUI.cache = {}
pfUI.module = {}
pfUI.modules = {}
pfUI.skin = {}
pfUI.skins = {}
pfUI.environment = {}
pfUI.movables = {}
pfUI.version = {}
pfUI.hooks = {}
pfUI.env = {}

-- check if macro addons are loaded (disables macrotweak/macroscan)
function pfUI:MacroAddonsLoaded()
  return IsAddOnLoaded("Supermacro") or IsAddOnLoaded("SuperCleveRoidMacros") or IsAddOnLoaded("UltimaMacros")
end

-- detect current addon path
local tocs = { "", "-master", "-tbc", "-wotlk" }
for _, name in pairs(tocs) do
  local current = string.format("pfUI%s", name)
  local title = C_AddOns.GetAddOnName(current)
  if title then
    pfUI.name = current
    pfUI.path = "Interface\\AddOns\\" .. current
    break
  end
end

-- handle/convert media dir paths
pfUI.media = setmetatable({}, { __index = function(tab,key)
  local value = tostring(key)
  if strfind(value, "img:") then
    value = string.gsub(value, "img:", pfUI.path .. "\\img\\")
  elseif strfind(value, "font:") then
    value = string.gsub(value, "font:", pfUI.path .. "\\fonts\\")
  else
    value = string.gsub(value, "Interface\\AddOns\\pfUI\\", pfUI.path .. "\\")
  end
  rawset(tab,key,value)
  return value
end})

-- cache client version
local _, _, _, client = GetBuildInfo()
pfUI.client = client or 11200

-- setup pfUI namespace
setmetatable(pfUI.env, {__index = getfenv(0)})

PFUI_CLASS_COLORS = setmetatable({
  WARRIOR = { r = 0.78, g = 0.61, b = 0.43 },
  MAGE    = { r = 0.25, g = 0.78, b = 0.92 },
  ROGUE   = { r = 1,    g = 0.96, b = 0.41 },
  DRUID   = { r = 1,    g = 0.49, b = 0.04 },
  HUNTER  = { r = 0.67, g = 0.83, b = 0.45 },
  SHAMAN  = { r = 0,    g = 0.44, b = 0.87 },
  PRIEST  = { r = 1,    g = 1,    b = 1    },
  WARLOCK = { r = 0.53, g = 0.53, b = 0.93 },
  PALADIN = { r = 0.96, g = 0.55, b = 0.73 },
}, { __index = function(t,k)
  local unknownColor = CreateColor(0.6, 0.6, 0.6, 1)
  unknownColor.colorStr = unknownColor:GenerateHexColor()
  return unknownColor
end})

for _, classColor in pairs(PFUI_CLASS_COLORS) do
  Mixin(classColor, ColorMixin)
  classColor.a = 1
  classColor.colorStr = classColor:GenerateHexColor()
end

function pfUI:UpdateFonts()
  -- abort when config is not ready yet
  if not pfUI_config or not pfUI_config.global then return end

  -- load font configuration
  local default, tooltip, unit, unit_name, combat
  if pfUI_config.global.force_region == "1" and GetLocale() == "zhCN" then
    -- force locale compatible fonts (zhCN 1.12)
    default = "Fonts\\FZXHLJW.TTF"
    tooltip = "Fonts\\FZXHLJW.TTF"
    combat = "Fonts\\FZXHLJW.TTF"
    unit = "Fonts\\FZXHLJW.TTF"
    unit_name = "Fonts\\FZXHLJW.TTF"
  elseif pfUI_config.global.force_region == "1" and GetLocale() == "zhTW" then
    -- force locale compatible fonts (zhTW 1.12)
    default = "Fonts\\FZXHLJW.ttf"
    tooltip = "Fonts\\FZXHLJW.ttf"
    combat = "Fonts\\FZXHLJW.ttf"
    unit = "Fonts\\FZXHLJW.ttf"
    unit_name = "Fonts\\FZXHLJW.ttf"
  elseif pfUI_config.global.force_region == "1" and GetLocale() == "koKR" then
    -- force locale compatible fonts (koKR)
    default = "Fonts\\2002.TTF"
    tooltip = "Fonts\\2002.TTF"
    combat = "Fonts\\2002.TTF"
    unit = "Fonts\\2002.TTF"
    unit_name = "Fonts\\2002.TTF"
  else
    -- use default entries
    default = pfUI.media[pfUI_config.global.font_default]
    tooltip = pfUI.media[pfUI_config.tooltip.font_tooltip]
    combat = pfUI.media[pfUI_config.global.font_combat]
    unit = pfUI.media[pfUI_config.global.font_unit]
    unit_name = pfUI.media[pfUI_config.global.font_unit_name]
  end

  -- write setting shortcuts
  pfUI.font_default = default
  pfUI.font_combat = combat
  pfUI.font_unit = unit
  pfUI.font_unit_name = unit_name

  -- skip setting fonts, keep blizzard defaults
  if pfUI_config.global.font_blizzard == "1" then
    return
  end

  -- set game constants
  STANDARD_TEXT_FONT = default
  DAMAGE_TEXT_FONT   = combat
  NAMEPLATE_FONT     = default
  UNIT_NAME_FONT     = unit_name

  -- If the Invisible font is selected, suppress all combat text entirely
  if string.find(combat or "", "AdobeBlank") then
    SHOW_COMBAT_TEXT = "0"
  end

  -- set dropdown font to default size
  UIDROPDOWNMENU_DEFAULT_TEXT_HEIGHT = 11

  -- change default game font objects
  SystemFont:SetFont(default, 15)
  GameFontNormal:SetFont(default, 12)
  GameFontBlack:SetFont(default, 12)
  GameFontNormalSmall:SetFont(default, 11)
  GameFontNormalLarge:SetFont(default, 16)
  GameFontNormalHuge:SetFont(default, 20)
  NumberFontNormal:SetFont(default, 14, "OUTLINE")
  NumberFontNormalSmall:SetFont(default, 14, "OUTLINE")
  NumberFontNormalLarge:SetFont(default, 16, "OUTLINE")
  NumberFontNormalHuge:SetFont(default, 30, "OUTLINE")
  QuestTitleFont:SetFont(default, 18)
  QuestFont:SetFont(default, 13)
  QuestFontHighlight:SetFont(default, 14)
  ItemTextFontNormal:SetFont(default, 15)
  MailTextFontNormal:SetFont(default, 15)
  SubSpellFont:SetFont(default, 12)
  DialogButtonNormalText:SetFont(default, 16)
  ZoneTextFont:SetFont(default, 34, "OUTLINE")
  SubZoneTextFont:SetFont(default, 24, "OUTLINE")
  GameTooltipText:SetFont(tooltip, pfUI_config.tooltip.font_tooltip_size)
  GameTooltipTextSmall:SetFont(tooltip, pfUI_config.tooltip.font_tooltip_size)
  GameTooltipHeaderText:SetFont(tooltip, pfUI_config.tooltip.font_tooltip_size + 1)
  WorldMapTextFont:SetFont(default, 102, "THICK")
  InvoiceTextFontNormal:SetFont(default, 12)
  InvoiceTextFontSmall:SetFont(default, 12)
  CombatTextFont:SetFont(combat, 25)
  ChatFontNormal:SetFont(default, 13, pfUI_config.chat.text.outline == "1" and "OUTLINE")

  if TextStatusBarTextSmall then -- does not exist in koKR
    TextStatusBarTextSmall:SetFont(default, 12, "NORMAL")
  end
end

local translations
function pfUI:GetEnvironment()
  -- load api into environment
  for m, func in pairs(pfUI.api or {}) do
    pfUI.env[m] = func
  end

  if pfUI_config and pfUI_config.global and pfUI_config.global.language and not translations then
    local lang = pfUI_config and pfUI_config.global and pfUI_config.global.language and pfUI_translation[pfUI_config.global.language] and pfUI_config.global.language or GetLocale()
    pfUI.env.T = setmetatable(pfUI_translation[lang] or {}, { __index = function(tab,key)
      local value = tostring(key)
      rawset(tab,key,value)
      return value
    end})
    translations = true
  end

  pfUI.env._G = getfenv(0)
  pfUI.env.C = pfUI_config
  pfUI.env.pfUI_throttle = _G.pfUI_throttle
  pfUI.env.L = (pfUI_locale[GetLocale()] or pfUI_locale["enUS"])

  return pfUI.env
end

-- [ New Module Registry ]
-- Tracks modules introduced after initial release so existing users get
-- a one-time prompt asking if they want to enable them.
pfUI.new_modules = {}

function pfUI:RegisterNewModule(name, label, class)
  table.insert(pfUI.new_modules, { name = name, label = label, class = class })
end

function pfUI:CheckNewModules()
  pfUI_init.seen_modules = pfUI_init.seen_modules or {}

  local pending = 0
  local _, playerClass = UnitClass("player")
  for _, entry in pairs(pfUI.new_modules) do
    if not pfUI_init.seen_modules[entry.name] and pfUI_init["finalize"] then
      if not entry.class or entry.class == playerClass then
        pending = pending + 1
      end
    end
  end

  if pending == 0 then return end

  local remaining = pending
  local needsReload = false

  local function onAnswer()
    remaining = remaining - 1
    if remaining <= 0 and needsReload then
      ReloadUI()
    end
  end

  for _, entry in pairs(pfUI.new_modules) do
    local name = entry.name
    if not pfUI_init.seen_modules[name] then
      -- Skip modules restricted to a different class
      if entry.class and entry.class ~= playerClass then
        -- don't mark as seen - player might have a druid alt later
      else
      pfUI_init.seen_modules[name] = true

      -- Only prompt existing users (firstrun wizard already ran)
      if pfUI_init["finalize"] then
        StaticPopupDialogs["PFUI_NEW_MODULE_" .. strupper(name)] = {
          text = "|cff33ffccpfUI|r: New module available!\n\n|cffffffffDo you want to enable |cff33ffcc" .. (entry.label or name) .. "|r|cffffffff?\n\nYou can always change this later in the pfUI settings.|r",
          button1 = "Yes",
          button2 = "No",
          OnAccept = function()
            pfUI_config["disabled"] = pfUI_config["disabled"] or {}
            pfUI_config["disabled"][name] = nil
            onAnswer()
          end,
          OnCancel = function()
            pfUI_config["disabled"] = pfUI_config["disabled"] or {}
            pfUI_config["disabled"][name] = "1"
            needsReload = true
            onAnswer()
          end,
          timeout = 0,
          whileDead = true,
          hideOnEscape = false,
        }
        StaticPopup_Show("PFUI_NEW_MODULE_" .. strupper(name))
      end
      end -- else (class match)
    end
  end
end

local function BackwardsCompatRegister(func, arg3)
  if arg3 and type(func) == "string" and type(arg3) == "function" and string.find(func, "vanilla") then
    return arg3
  end
  return func
end

function pfUI:RegisterModule(name, func, arg3)
  if pfUI.disabled then return end
  if pfUI.module[name] then return end
  func = BackwardsCompatRegister(func, arg3)
  pfUI.module[name] = func
  table.insert(pfUI.modules, name)
  if not pfUI.bootup then
    pfUI:LoadModule(name)
  end
end

function pfUI:RegisterSkin(name, func, arg3)
  if pfUI.disabled then return end
  if pfUI.skin[name] then return end
  func = BackwardsCompatRegister(func, arg3)
  pfUI.skin[name] = func
  table.insert(pfUI.skins, name)
  if not pfUI.bootup then
    pfUI:LoadSkin(name)
  end
end

function pfUI:LoadModule(m)
  setfenv(pfUI.module[m], pfUI:GetEnvironment())
  pfUI.module[m]()
end

function pfUI:LoadSkin(s)
  setfenv(pfUI.skin[s], pfUI:GetEnvironment())
  pfUI.skin[s]()
end

pfUI:SetScript("OnEvent", function()
  if pfUI.disabled then return end

  -- make sure to initialize and set our fonts
  -- each time an addon got loaded but only
  -- when the config is already accessible
  if not pfUI.bootup then
    pfUI:UpdateFonts()
  end

  if arg1 == pfUI.name then
    -- read pfUI version from .toc file. Source/dev installs leave Version as
    -- "@project-version@" until release tooling substitutes it — mark those
    -- explicitly as "dev" instead of pretending they're a real numbered build.
    local raw = tostring(GetAddOnMetadata(pfUI.name, "Version"))
    if strfind(raw, "@") then
      pfUI.version.major, pfUI.version.minor, pfUI.version.fix = 0, 0, 0
      pfUI.version.string = "dev"
    else
      local major, minor, fix = pfUI.api.strsplit(".", raw)
      pfUI.version.major = tonumber(major) or 0
      pfUI.version.minor = tonumber(minor) or 0
      pfUI.version.fix   = tonumber(fix)   or 0
      pfUI.version.string = pfUI.version.major .. "." .. pfUI.version.minor .. "." .. pfUI.version.fix
    end

    -- use "Modern" as default profile on a fresh install
    if pfUI.api.isempty(pfUI_init) and pfUI.api.isempty(pfUI_config) then
      pfUI_config = pfUI.api.CopyTable(pfUI_profiles["Modern"]) or {}
    end

    pfUI:LoadConfig()
    pfUI:MigrateConfig()
    pfUI:UpdateFonts()

    -- load modules
    for _, m in pairs(this.modules) do
      if not ( pfUI_config["disabled"] and pfUI_config["disabled"][m]  == "1" ) then
        pfUI:LoadModule(m)
      end
    end

    -- load skins
    for _, s in pairs(this.skins) do
      if not ( pfUI_config["disabled"] and pfUI_config["disabled"]["skin_" .. s]  == "1" ) then
        pfUI:LoadSkin(s)
      end
    end

    pfUI.bootup = nil

    -- Prompt existing users about newly introduced modules
    pfUI:CheckNewModules()
  end
end)

pfUI.backdrop = {
  bgFile = "Interface\\BUTTONS\\WHITE8X8", tile = false, tileSize = 0,
  edgeFile = "Interface\\BUTTONS\\WHITE8X8", edgeSize = 1,
  insets = {left = -1, right = -1, top = -1, bottom = -1},
}
pfUI.backdrop_no_top = pfUI.backdrop

pfUI.backdrop_thin = {
  bgFile = "Interface\\BUTTONS\\WHITE8X8", tile = false, tileSize = 0,
  edgeFile = "Interface\\BUTTONS\\WHITE8X8", edgeSize = 1,
  insets = {left = 0, right = 0, top = 0, bottom = 0},
}

pfUI.backdrop_hover = {
  edgeFile = "Interface\\BUTTONS\\WHITE8X8", edgeSize = 24,
  insets = {left = -1, right = -1, top = -1, bottom = -1},
}

pfUI.backdrop_shadow = {
  edgeFile = pfUI.media["img:glow2"], edgeSize = 8,
  insets = {left = 0, right = 0, top = 0, bottom = 0},
}

pfUI.backdrop_blizz_bg = {
  bgFile =  "Interface\\BUTTONS\\WHITE8X8", tile = true, tileSize = 8,
  insets = { left = 3, right = 3, top = 3, bottom = 3 }
}

pfUI.backdrop_blizz_border = {
  edgeFile = pfUI.media["img:border_blizz"], edgeSize = 6,
  insets = { left = 3, right = 3, top = 3, bottom = 3 }
}

pfUI.backdrop_blizz_full = {
  bgFile =  "Interface\\BUTTONS\\WHITE8X8", tile = true, tileSize = 8,
  edgeFile = pfUI.media["img:border_blizz"], edgeSize = 6,
  insets = { left = 3, right = 3, top = 3, bottom = 3 }
}

message = function(msg)
  DEFAULT_CHAT_FRAME:AddMessage("|cffcccc33INFO: |cffffff55" .. ( msg or "nil" ))
end
print = print or message

error = function(msg)
  if PF_DEBUG_MODE then message(debugstack()) end
  if string.find(msg, "AddOns\\pfUI") then
    DEFAULT_CHAT_FRAME:AddMessage("|cffcc3333ERROR: |cffff5555".. (msg or "nil" ))
  elseif not pfUI_config or (pfUI_config.global and pfUI_config.global.errors == "1") then
    DEFAULT_CHAT_FRAME:AddMessage("|cffcc3333ERROR: |cffff5555".. (msg or "nil" ))
  end
end
seterrorhandler(error)

function pfUI.SetupCVars()
  ClearTutorials()
  TutorialFrame_HideAllAlerts()

  ConsoleExec("CameraDistanceMaxFactor 5")

  SetCVar("autoSelfCast", "1")
  SetCVar("profanityFilter", "0")

  MultiActionBar_ShowAllGrids()
  ALWAYS_SHOW_MULTIBARS = "1"

  SHOW_BUFF_DURATIONS = "1"
  QUEST_FADING_DISABLE = "1"
  NAMEPLATES_ON = "1"
  SIMPLE_CHAT = "0"

  -- Only force combat text CVars when not using the Invisible font.
  -- If AdobeBlank is selected, the player wants no combat text -- respect that.
  local isInvisible = pfUI_config.global.font_combat and
    string.find(pfUI_config.global.font_combat, "AdobeBlank")
  if not isInvisible then
    SHOW_COMBAT_TEXT = "1"
    COMBAT_TEXT_SHOW_LOW_HEALTH_MANA = "1"
    COMBAT_TEXT_SHOW_AURAS = "1"
    COMBAT_TEXT_SHOW_AURA_FADE = "1"
    COMBAT_TEXT_SHOW_COMBAT_STATE = "1"
    COMBAT_TEXT_SHOW_DODGE_PARRY_MISS = "1"
    COMBAT_TEXT_SHOW_RESISTANCES = "1"
    COMBAT_TEXT_SHOW_REPUTATION = "1"
    COMBAT_TEXT_SHOW_REACTIVES = "1"
    COMBAT_TEXT_SHOW_FRIENDLY_NAMES = "1"
    COMBAT_TEXT_SHOW_COMBO_POINTS = "1"
    COMBAT_TEXT_SHOW_MANA = "1"
    COMBAT_TEXT_FLOAT_MODE = "1"
    COMBAT_TEXT_SHOW_HONOR_GAINED = "1"
  end
  UIParentLoadAddOn("Blizzard_CombatText")
end