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

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

-- 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 = {}

-- detect current addon path
local tocs = { "", "-master", "-tbc", "-wotlk" }
for _, name in pairs(tocs) do
  local current = string.format("pfUI%s", name)
  local _, title = GetAddOnInfo(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()
client = client or 11200

-- detect client expansion
if client >= 20000 and client <= 20400 then
  pfUI.expansion = "tbc"
  pfUI.client = client
elseif client >= 30000 and client <= 30300 then
  pfUI.expansion = "wotlk"
  pfUI.client = client
else
  pfUI.expansion = "vanilla"
  pfUI.client = client
end

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

function pfUI:UpdateColors()
  if pfUI.expansion == "vanilla" then
    -- update table to get unknown colors and blue shamans for vanilla
    RAID_CLASS_COLORS = {
      ["WARRIOR"] = { r = 0.78, g = 0.61, b = 0.43, colorStr = "ffc79c6e" },
      ["MAGE"]    = { r = 0.41, g = 0.8,  b = 0.94, colorStr = "ff69ccf0" },
      ["ROGUE"]   = { r = 1,    g = 0.96, b = 0.41, colorStr = "fffff569" },
      ["DRUID"]   = { r = 1,    g = 0.49, b = 0.04, colorStr = "ffff7d0a" },
      ["HUNTER"]  = { r = 0.67, g = 0.83, b = 0.45, colorStr = "ffabd473" },
      ["SHAMAN"]  = { r = 0.14, g = 0.35, b = 1.0,  colorStr = "ff0070de" },
      ["PRIEST"]  = { r = 1,    g = 1,    b = 1,    colorStr = "ffffffff" },
      ["WARLOCK"] = { r = 0.58, g = 0.51, b = 0.79, colorStr = "ff9482c9" },
      ["PALADIN"] = { r = 0.96, g = 0.55, b = 0.73, colorStr = "fff58cba" },
    }

    RAID_CLASS_COLORS = setmetatable(RAID_CLASS_COLORS, { __index = function(tab,key)
      return { r = 0.6,  g = 0.6,  b = 0.6,  colorStr = "ff999999" }
    end})
  end
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" and pfUI.expansion == "vanilla" 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() == "zhCN" and pfUI.expansion == "tbc" then
    -- force locale compatible fonts (zhCN 2.4.3)
    default = "Fonts\\ZYHei.ttf"
    tooltip = "Fonts\\ZYHei.ttf"
    combat = "Fonts\\ZYKai_C.ttf"
    unit = "Fonts\\ZYKai_T.ttf"
    unit_name = "Fonts\\ZYHei.ttf"
  elseif pfUI_config.global.force_region == "1" and GetLocale() == "zhTW" and pfUI.expansion == "vanilla" 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() == "zhTW" and pfUI.expansion == "tbc" then
    -- force locale compatible fonts (zhTW 2.4.3)
    default = "Fonts\\bHEI01B.ttf"
    tooltip = "Fonts\\bHEI01B.ttf"
    combat = "Fonts\\bHEI01B.ttf"
    unit = "Fonts\\bHEI01B.ttf"
    unit_name = "Fonts\\bHEI01B.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

  -- 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.L = (pfUI_locale[GetLocale()] or pfUI_locale["enUS"])

  return pfUI.env
end

function pfUI:RegisterModule(name, a2, a3)
  if pfUI.module[name] then return end
  local hasv = type(a2) == "string"
  local func, version = hasv and a3 or a2, hasv and a2 or "vanilla:tbc:wotlk"

  -- check for client compatibility
  if not strfind(version, pfUI.expansion) then return end

  pfUI.module[name] = func
  table.insert(pfUI.modules, name)
  if not pfUI.bootup then
    pfUI:LoadModule(name)
  end
end

function pfUI:RegisterSkin(name, a2, a3)
  if pfUI.skin[name] then return end
  local hasv = type(a2) == "string"
  local func, version = hasv and a3 or a2, hasv and a2 or "vanilla:tbc:wotlk"

  -- check for client compatibility
  if not strfind(version, pfUI.expansion) then return end

  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()
  -- enforce color updates on each event
  pfUI:UpdateColors()

  -- 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
    local major, minor, fix = pfUI.api.strsplit(".", tostring(GetAddOnMetadata(pfUI.name, "Version")))
    pfUI.version.major = tonumber(major) or 1
    pfUI.version.minor = tonumber(minor) or 2
    pfUI.version.fix   = tonumber(fix)   or 0
    pfUI.version.string = pfUI.version.major .. "." .. pfUI.version.minor .. "." .. pfUI.version.fix

    -- use "Sandworlds" 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["Sandworlds"]) or {}

      -- First run: enforce UI scale to 87%
      -- Why: provide a consistent default look without relying on user input.
      -- How: set the game CVars and apply to UIParent immediately.
      -- Note: This only runs on a fresh install due to the condition above.
      local desiredScale = 0.87
      SetCVar("uiScale", desiredScale)
      SetCVar("useUiScale", 1)
      UIParent:SetScale(desiredScale)
    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
  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"

  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"
  UIParentLoadAddOn("Blizzard_CombatText")
end