local addonName, ns = ...
ns = ns or {}

local M = ns.MSUF2 or {}
ns.MSUF2 = M
_G.MSUF2 = M

local W = M.Widgets
local T = M.Theme

local floor = math.floor

local UNIT_PAGES = {
    uf_player = { unit = "player", title = "MSUF Player", label = "Player" },
    uf_target = { unit = "target", title = "MSUF Target", label = "Target" },
    uf_targettarget = { unit = "targettarget", title = "MSUF Target of Target", label = "Target of Target" },
    uf_focus = { unit = "focus", title = "MSUF Focus", label = "Focus" },
    uf_pet = { unit = "pet", title = "MSUF Pet", label = "Pet" },
    uf_boss = { unit = "boss", title = "MSUF Boss Frames", label = "Boss" },
}

local POWER_UNITS = {
    player = true,
    target = true,
    focus = true,
    boss = true,
}

local CASTBAR_FIELDS = {
    player = { enable = "enablePlayerCastbar", time = "showPlayerCastTime", icon = "castbarPlayerShowIcon", text = "castbarPlayerShowSpellName" },
    target = { enable = "enableTargetCastbar", time = "showTargetCastTime", icon = "castbarTargetShowIcon", text = "castbarTargetShowSpellName" },
    focus = { enable = "enableFocusCastbar", time = "showFocusCastTime", icon = "castbarFocusShowIcon", text = "castbarFocusShowSpellName" },
    boss = { enable = "enableBossCastbar", time = "showBossCastTime", icon = "showBossCastIcon", text = "showBossCastName" },
}

local LOAD_CONDITIONS = {
    { key = "loadCondHideMounted", label = "Mounted" },
    { key = "loadCondHideOutOfCombat", label = "Out of combat" },
    { key = "loadCondHideSolo", label = "Solo" },
    { key = "loadCondHideInVehicle", label = "In vehicle" },
    { key = "loadCondHideInGroup", label = "In group" },
    { key = "loadCondHideInInstance", label = "In instance" },
    { key = "loadCondHideResting", label = "Resting" },
    { key = "loadCondHideInCombat", label = "In combat" },
    { key = "loadCondHideStealthed", label = "Stealthed" },
}

local STATUS_ANCHORS = {
    { value = "TOPLEFT", text = "Top Left" },
    { value = "TOPRIGHT", text = "Top Right" },
    { value = "BOTTOMLEFT", text = "Bottom Left" },
    { value = "BOTTOMRIGHT", text = "Bottom Right" },
    { value = "CENTER", text = "Center" },
    { value = "TOP", text = "Top" },
    { value = "BOTTOM", text = "Bottom" },
    { value = "LEFT", text = "Left" },
    { value = "RIGHT", text = "Right" },
}

local STATUS_CORNER_ANCHORS = {
    { value = "TOPLEFT", text = "Top Left" },
    { value = "TOPRIGHT", text = "Top Right" },
    { value = "BOTTOMLEFT", text = "Bottom Left" },
    { value = "BOTTOMRIGHT", text = "Bottom Right" },
    { value = "CENTER", text = "Center" },
}

local STATUS_LEVEL_ANCHORS = {
    { value = "NAMERIGHT", text = "Right to player name" },
    { value = "NAMELEFT", text = "Left to player name" },
    { value = "TOPLEFT", text = "Top Left" },
    { value = "TOPRIGHT", text = "Top Right" },
    { value = "BOTTOMLEFT", text = "Bottom Left" },
    { value = "BOTTOMRIGHT", text = "Bottom Right" },
}

local COMBAT_SYMBOLS = {
    { value = "DEFAULT", text = "Default" },
    { value = "weapon_axes_crossed", text = "Axes" },
    { value = "weapon_bows_crossed", text = "Bows" },
    { value = "weapon_crossbows_crossed", text = "Crossbows" },
    { value = "weapon_daggers_crossed", text = "Daggers" },
    { value = "weapon_fishing_poles_crossed", text = "Fishing" },
    { value = "weapon_fist_crossed", text = "Fist" },
    { value = "weapon_guns_crossed", text = "Guns" },
    { value = "weapon_maces_crossed", text = "Maces" },
    { value = "weapon_polearms_crossed", text = "Polearms" },
    { value = "weapon_shuriken", text = "Shuriken" },
    { value = "weapon_staves_crossed", text = "Staves" },
    { value = "weapon_swords_crossed", text = "Swords" },
    { value = "weapon_thrown_crossed", text = "Thorn" },
    { value = "weapon_wands_crossed", text = "Wands" },
    { value = "weapon_warglaives_crossed", text = "Warglaives" },
}

local RESTED_SYMBOLS = {
    { value = "DEFAULT", text = "Default" },
    { value = "rested_moonzzz", text = "Moon (3 z)" },
    { value = "rested_moonzzzz", text = "Moon (4 z)" },
    { value = "rested_sleep_zzzz", text = "Sleep ZzzZ" },
    { value = "rested_zzz_compact", text = "Compact Zzz" },
    { value = "rested_zzz_diag", text = "Diagonal Zzz" },
    { value = "rested_zzz_stack", text = "Stacked Zzz" },
}

local RESS_SYMBOLS = {
    { value = "DEFAULT", text = "Default" },
    { value = "resurrection_ankh", text = "Ankh" },
    { value = "resurrection_cross", text = "Cross" },
    { value = "resurrection_soul", text = "Soul" },
    { value = "resurrection_wings", text = "Angelic Wings" },
}

local DEFAULT_SYMBOLS = {
    { value = "DEFAULT", text = "Default" },
}

local STATUS_CONTROLS = {
    {
        value = "leader", text = "Leader / Assist",
        allowed = function(unit) return unit == "player" or unit == "target" end,
        show = "showLeaderIcon", defaultShow = true,
        size = "leaderIconSize", defaultSize = 14,
        anchor = "leaderIconAnchor", defaultAnchor = "TOPLEFT", anchors = STATUS_CORNER_ANCHORS,
        x = "leaderIconOffsetX", defaultX = 0,
        y = "leaderIconOffsetY", defaultY = 3,
        layer = "leaderIconLayer", defaultLayer = 7,
        refresh = "MSUF_RefreshLeaderIconFrames",
    },
    {
        value = "raidmarker", text = "Raid Marker",
        show = "showRaidMarker", defaultShow = true,
        size = "raidMarkerSize", defaultSize = 18,
        anchor = "raidMarkerAnchor", defaultAnchor = "TOPLEFT", anchors = STATUS_CORNER_ANCHORS,
        x = "raidMarkerOffsetX", defaultX = 16,
        y = "raidMarkerOffsetY", defaultY = 3,
        layer = "raidMarkerLayer", defaultLayer = 7,
        refresh = "MSUF_RefreshRaidMarkerFrames",
    },
    {
        value = "level", text = "Level",
        show = "showLevelIndicator", defaultShow = true,
        size = "levelIndicatorSize", defaultSize = 14,
        anchor = "levelIndicatorAnchor", defaultAnchor = "NAMERIGHT", anchors = STATUS_LEVEL_ANCHORS,
        x = "levelIndicatorOffsetX", defaultX = 0,
        y = "levelIndicatorOffsetY", defaultY = 0,
        layer = "levelIndicatorLayer", defaultLayer = 7,
        refresh = "MSUF_RefreshLevelIndicatorFrames",
    },
    {
        value = "eliteicon", text = "Elite / Rare",
        allowed = function(unit) return unit == "target" or unit == "focus" or unit == "targettarget" or unit == "boss" end,
        show = "showEliteIcon", defaultShow = true,
        size = "eliteIconSize", defaultSize = 20,
        anchor = "eliteIconAnchor", defaultAnchor = "TOPRIGHT", anchors = STATUS_CORNER_ANCHORS,
        x = "eliteIconOffsetX", defaultX = 2,
        y = "eliteIconOffsetY", defaultY = 2,
        layer = "eliteIconLayer", defaultLayer = 7,
        refresh = "MSUF_RefreshEliteIconFrames",
    },
    {
        value = "statusText", text = "Dead Text",
        show = "statusTextEnabled", defaultShow = true,
        size = "statusTextSize", defaultSize = 16,
        anchor = "statusTextAnchor", defaultAnchor = "CENTER", anchors = STATUS_CORNER_ANCHORS,
        x = "statusTextOffsetX", defaultX = 0,
        y = "statusTextOffsetY", defaultY = 0,
        layer = "statusTextLayer", defaultLayer = 7,
        refresh = "MSUF_RequestStatusTextRefresh",
        statusRuntime = true,
    },
    {
        value = "statusCombat", text = "Combat",
        allowed = function(unit) return unit == "player" or unit == "target" end,
        show = "showCombatStateIndicator", defaultShow = true,
        size = "combatStateIndicatorSize", defaultSize = 18,
        anchor = "combatStateIndicatorAnchor", defaultAnchor = "TOPLEFT", anchors = STATUS_CORNER_ANCHORS,
        x = "combatStateIndicatorOffsetX", defaultX = 0,
        y = "combatStateIndicatorOffsetY", defaultY = 0,
        layer = "combatStateIndicatorLayer", defaultLayer = 7,
        symbol = "combatStateIndicatorSymbol", symbols = COMBAT_SYMBOLS,
        refresh = "MSUF_RequestStatusCombatIndicatorRefresh",
        statusRuntime = true,
    },
    {
        value = "statusResting", text = "Rested (player only)",
        allowed = function(unit) return unit == "player" end,
        show = "showRestingIndicator", defaultShow = false,
        size = "restedStateIndicatorSize", defaultSize = 18,
        anchor = "restedStateIndicatorAnchor", defaultAnchor = "TOPLEFT", anchors = STATUS_CORNER_ANCHORS,
        x = "restedStateIndicatorOffsetX", defaultX = 0,
        y = "restedStateIndicatorOffsetY", defaultY = 0,
        layer = "restedStateIndicatorLayer", defaultLayer = 7,
        symbol = "restedStateIndicatorSymbol", symbols = RESTED_SYMBOLS,
        refresh = "MSUF_RequestStatusRestingIndicatorRefresh",
        statusRuntime = true,
    },
    {
        value = "statusIncomingRes", text = "Incoming Rez",
        allowed = function(unit) return unit == "player" or unit == "target" end,
        show = "showIncomingResIndicator", defaultShow = true,
        size = "incomingResIndicatorSize", defaultSize = 18,
        anchor = "incomingResIndicatorAnchor", defaultAnchor = "TOPRIGHT", anchors = STATUS_CORNER_ANCHORS,
        x = "incomingResIndicatorOffsetX", defaultX = 0,
        y = "incomingResIndicatorOffsetY", defaultY = 0,
        layer = "incomingResIndicatorLayer", defaultLayer = 7,
        symbol = "incomingResIndicatorSymbol", symbols = RESS_SYMBOLS,
        refresh = "MSUF_RequestStatusIncomingResIndicatorRefresh",
        statusRuntime = true,
    },
}

local TEXT_ANCHORS = {
    { value = "LEFT", text = "Left" },
    { value = "CENTER", text = "Center" },
    { value = "RIGHT", text = "Right" },
}

local HP_MODES = {
    { value = "PERCENT", text = "Percent" },
    { value = "CURRENT", text = "Current" },
    { value = "MAX", text = "Max" },
    { value = "DEFICIT", text = "Deficit" },
    { value = "CURMAX", text = "Current / Max" },
    { value = "CURPERCENT", text = "Current / Percent" },
    { value = "CURMAXPERCENT", text = "Current / Max / Percent" },
    { value = "MAXPERCENT", text = "Max / Percent" },
    { value = "PERCENTCUR", text = "Percent / Current" },
    { value = "PERCENTMAX", text = "Percent / Max" },
    { value = "PERCENTCURMAX", text = "Percent / Current / Max" },
    { value = "NONE", text = "None" },
}

local POWER_MODES = {
    { value = "CURRENT", text = "Current" },
    { value = "MAX", text = "Max" },
    { value = "CURMAX", text = "Current / Max" },
    { value = "PERCENT", text = "Percent" },
    { value = "CURPERCENT", text = "Current / Percent" },
    { value = "CURMAXPERCENT", text = "Current / Max / Percent" },
    { value = "NONE", text = "None" },
}

local BOSS_LAYOUT_OPTIONS = {
    { value = "VERTICAL_DOWN", text = "Vertical (top -> bottom)" },
    { value = "VERTICAL_UP", text = "Vertical (bottom -> top)" },
    { value = "HORIZONTAL_RIGHT", text = "Horizontal (left -> right)" },
    { value = "HORIZONTAL_LEFT", text = "Horizontal (right -> left)" },
}

local BOSS_LAYOUT_VALID = {
    VERTICAL_DOWN = true,
    VERTICAL_UP = true,
    HORIZONTAL_RIGHT = true,
    HORIZONTAL_LEFT = true,
}

local SEPARATORS = {
    { value = "", text = "space" },
    { value = "-", text = "-" },
    { value = "/", text = "/" },
    { value = "\\", text = "\\" },
    { value = "|", text = "|" },
    { value = "<", text = "<" },
    { value = ">", text = ">" },
    { value = "~", text = "~" },
    { value = ":", text = ":" },
}

local PORTRAIT_RENDER = {
    { value = "2D", text = "2D portrait" },
    { value = "CLASS", text = "Class portrait" },
}

local PORTRAIT_SHAPES = {
    { value = "SQUARE", text = "Square" },
    { value = "CIRCLE", text = "Circle" },
    { value = "ROUNDED", text = "Rounded" },
    { value = "DIAMOND", text = "Diamond" },
}

local PORTRAIT_BORDERS = {
    { value = "NONE", text = "No border" },
    { value = "SOLID", text = "Solid" },
    { value = "CLASS_COLOR", text = "Class color" },
    { value = "REACTION", text = "Reaction color" },
    { value = "CUSTOM", text = "Custom color" },
}

local function GetConf(unit)
    return M.GetUnitDB(unit)
end

local function GetGeneral()
    return M.GetGeneralDB()
end

local function GetBars()
    local db = M.EnsureDB()
    db.bars = db.bars or {}
    return db.bars
end

local function Call(name, ...)
    local fn = _G[name]
    if type(fn) == "function" then pcall(fn, ...) end
end

local function DeepCopy(src)
    if type(src) ~= "table" then return src end
    if type(CopyTable) == "function" then return CopyTable(src) end
    local dst = {}
    for k, v in pairs(src) do dst[k] = DeepCopy(v) end
    return dst
end

local COPY_POWER_BAR_FIELDS = {
    "showPowerBar", "powerBarHeight", "embedPowerBarIntoHealth",
    "powerBarBorderEnabled", "powerBarBorderThickness", "powerSmoothFill",
    "powerBarDetached", "detachedPowerBarWidth", "detachedPowerBarHeight",
    "detachedPowerBarOffsetX", "detachedPowerBarOffsetY", "detachedPowerBarFrameLevelOffset",
    "detachedPowerBarTextOnBar", "detachedPowerBarSyncClassPower", "detachedPowerBarAnchorToClassPower",
}

local COPY_PORTRAIT_FIELDS = {
    "portraitMode", "portraitRender", "portraitClassStyle", "portraitShape",
    "portraitSizeOverride", "portraitOffsetX", "portraitOffsetY",
    "portraitBorderStyle", "portraitBorderThickness",
    "portraitBgEnabled", "portraitFillBorder",
}

local COPY_TEXT_FIELDS = {
    "nameTextAnchor", "nameOffsetX", "nameOffsetY", "nameFontSize",
    "hpOffsetX", "hpOffsetY", "hpFontSize",
    "hpTextMode", "textLeft", "textCenter", "textRight", "hpTextReverse", "hpTextSeparator",
    "powerOffsetX", "powerOffsetY", "powerFontSize",
    "powerTextMode", "powerTextLeft", "powerTextCenter", "powerTextRight", "powerTextSeparator",
    "nameTextLayer", "hpTextLayer", "powerTextLayer",
}

local COPY_INDICATOR_FIELDS = {
    "showLeaderIcon", "leaderIconOffsetX", "leaderIconOffsetY", "leaderIconAnchor", "leaderIconSize", "leaderIconLayer",
    "showRaidMarker", "raidMarkerOffsetX", "raidMarkerOffsetY", "raidMarkerAnchor", "raidMarkerSize", "raidMarkerLayer",
    "showLevelIndicator", "levelIndicatorOffsetX", "levelIndicatorOffsetY", "levelIndicatorAnchor", "levelIndicatorSize", "levelIndicatorLayer",
    "showEliteIcon", "eliteIconSize", "eliteIconAnchor", "eliteIconOffsetX", "eliteIconOffsetY", "eliteIconLayer",
}

local COPY_STATUSICON_FIELDS = {
    "statusIconsTestMode", "statusIconsMidnightStyle", "statusIconsAlpha",
    "statusTextEnabled", "statusTextOffsetX", "statusTextOffsetY",
    "statusTextAnchor", "statusTextSize", "statusTextLayer",
    "showCombatStateIndicator", "showRestingIndicator", "showIncomingResIndicator",
    "combatStateIndicatorOffsetX", "combatStateIndicatorOffsetY", "combatStateIndicatorAnchor",
    "combatStateIndicatorSize", "combatStateIndicatorLayer", "combatStateIndicatorSymbol",
    "restedStateIndicatorOffsetX", "restedStateIndicatorOffsetY", "restedStateIndicatorAnchor",
    "restedStateIndicatorSize", "restedStateIndicatorLayer", "restedStateIndicatorSymbol",
    "incomingResIndicatorOffsetX", "incomingResIndicatorOffsetY", "incomingResIndicatorAnchor",
    "incomingResIndicatorSize", "incomingResIndicatorLayer", "incomingResIndicatorSymbol",
}

local COPY_FRAME_BASIC_FIELDS = {
    "enabled", "showName", "showHP", "showPower", "reverseFillBars", "smoothFill",
}

local COPY_TRANSPARENCY_FIELDS = {
    "alphaInCombat", "alphaOutOfCombat", "alphaSync", "alphaSyncBoth",
    "alphaExcludeTextPortrait", "alphaPreserveHPColor", "alphaLayerMode",
    "alphaFGInCombat", "alphaFGOutOfCombat", "alphaBGInCombat", "alphaBGOutOfCombat", "alphaHPInCombat", "alphaHPOutOfCombat",
}

local COPY_LOAD_CONDITION_FIELDS = {
    "loadCondHideMounted", "loadCondHideInVehicle", "loadCondHideResting",
    "loadCondHideInCombat", "loadCondHideOutOfCombat", "loadCondHideStealthed",
    "loadCondHideSolo", "loadCondHideInGroup", "loadCondHideInInstance", "loadCondActive",
}

local COPY_LAYOUT_FIELDS = {
    "width", "height", "offsetX", "offsetY", "anchorFrameName", "anchorToUnitframe",
}

local UF_COPY_CATEGORIES = {
    { key = "basics",       label = "Frame Basics",     default = true },
    { key = "text",         label = "Text",             default = true },
    { key = "portrait",     label = "Portrait",         default = true },
    { key = "power",        label = "Power Bar",        default = true },
    { key = "castbar",      label = "Castbar",          default = true },
    { key = "status",       label = "Status Icons",     default = true },
    { key = "load",         label = "Load Conditions",  default = true },
    { key = "transparency", label = "Transparency",     default = true },
    { key = "layout",       label = "Size & Anchoring", default = false },
}

local function NewCopyScopeDefaults()
    local t = {}
    for i = 1, #UF_COPY_CATEGORIES do
        local cat = UF_COPY_CATEGORIES[i]
        t[cat.key] = cat.default ~= false
    end
    return t
end

local UNIT_COPY_TARGETS = {
    { value = "player", text = "Player" },
    { value = "target", text = "Target" },
    { value = "targettarget", text = "Target of Target" },
    { value = "focus", text = "Focus" },
    { value = "pet", text = "Pet" },
    { value = "boss", text = "Boss Frames" },
}

local function DefaultCopyTarget(unit)
    for i = 1, #UNIT_COPY_TARGETS do
        local value = UNIT_COPY_TARGETS[i].value
        if value ~= unit then return value end
    end
    return "target"
end

local function UnitTopLabel(unit)
    return ({
        player = "Player",
        target = "Target",
        targettarget = "Target of Target",
        focus = "Focus",
        boss = "Boss Frames",
        pet = "Pet",
    })[unit] or tostring(unit or "")
end

local function UnitTopPillWidth(unit)
    if unit == "targettarget" then return 116 end
    if unit == "boss" then return 92 end
    if unit == "target" then return 62 end
    if unit == "focus" then return 58 end
    if unit == "pet" then return 46 end
    return 56
end

local UNIT_KEY_SET = {
    player = true,
    target = true,
    targettarget = true,
    focus = true,
    pet = true,
    boss = true,
}

local function CanonUnitKey(key)
    if type(key) ~= "string" then return key end
    key = key:lower()
    if key == "tot" or key == "targetoftarget" or key == "target_of_target" then return "targettarget" end
    if key:match("^boss") then return "boss" end
    return key
end

local function EnsureUnitDB(key)
    local db = M.EnsureDB()
    key = CanonUnitKey(key)
    if not UNIT_KEY_SET[key] then return nil, nil end
    if key == "targettarget" then
        db.targettarget = db.targettarget or db.tot or {}
        db.tot = db.targettarget
        return db.targettarget, key
    end
    db[key] = db[key] or {}
    return db[key], key
end

local function CopyFields(dst, src, fields)
    for i = 1, #fields do
        dst[fields[i]] = src[fields[i]]
    end
end

local PB_SHOW_KEY_MAP = {
    player = "showPlayerPowerBar",
    target = "showTargetPowerBar",
    focus = "showFocusPowerBar",
    boss = "showBossPowerBar",
}

local function ReadPowerBarEnabled(conf, unitKey)
    if conf and conf.showPowerBar ~= nil then return conf.showPowerBar ~= false end
    local fn = _G.MSUF_ReadUnitPowerBarEnabled
    if type(fn) == "function" then return fn(unitKey) end
    local b, bk = _G.MSUF_DB and _G.MSUF_DB.bars, PB_SHOW_KEY_MAP[unitKey]
    if b and bk and b[bk] ~= nil then return b[bk] ~= false end
    return true
end

local function ReadPowerBarHeight(conf, unitKey)
    if conf and type(conf.powerBarHeight) == "number" then return conf.powerBarHeight end
    local fn = _G.MSUF_ReadUnitPowerBarHeight
    if type(fn) == "function" then return fn(unitKey) end
    local b = _G.MSUF_DB and _G.MSUF_DB.bars
    return tonumber(b and b.powerBarHeight) or 3
end

local function ReadPowerBarEmbed(conf, unitKey)
    if conf and conf.embedPowerBarIntoHealth ~= nil then return conf.embedPowerBarIntoHealth == true end
    local fn = _G.MSUF_ReadUnitPowerBarEmbed
    if type(fn) == "function" then return fn(unitKey) end
    local b = _G.MSUF_DB and _G.MSUF_DB.bars
    return b and b.embedPowerBarIntoHealth == true
end

local function ReadPowerBarBorderEnabled(conf, unitKey)
    if conf and conf.powerBarBorderEnabled ~= nil then return conf.powerBarBorderEnabled == true end
    local fn = _G.MSUF_ReadUnitPowerBarBorderEnabled
    if type(fn) == "function" then return fn(unitKey) end
    local b = _G.MSUF_DB and _G.MSUF_DB.bars
    return b and b.powerBarBorderEnabled == true
end

local function ReadPowerBarBorderThickness(conf, unitKey)
    if conf and type(conf.powerBarBorderThickness) == "number" then return conf.powerBarBorderThickness end
    local fn = _G.MSUF_ReadUnitPowerBarBorderThickness
    if type(fn) == "function" then return fn(unitKey) end
    local b = _G.MSUF_DB and _G.MSUF_DB.bars
    return tonumber(b and (b.powerBarBorderThickness or b.powerBarBorderSize)) or 1
end

local function ReadPowerSmoothFill(conf, unitKey)
    if conf and conf.powerSmoothFill ~= nil then return conf.powerSmoothFill == true end
    if unitKey == "player" then
        local b = _G.MSUF_DB and _G.MSUF_DB.bars
        return not (b and b.smoothPowerBar == false)
    end
    return false
end

local function CopyPowerBarFields(dst, src, srcKey)
    CopyFields(dst, src, COPY_POWER_BAR_FIELDS)
    dst.showPowerBar = ReadPowerBarEnabled(src, srcKey)
    dst.powerBarHeight = ReadPowerBarHeight(src, srcKey)
    dst.embedPowerBarIntoHealth = ReadPowerBarEmbed(src, srcKey)
    dst.powerBarBorderEnabled = ReadPowerBarBorderEnabled(src, srcKey)
    dst.powerBarBorderThickness = ReadPowerBarBorderThickness(src, srcKey)
    dst.powerSmoothFill = ReadPowerSmoothFill(src, srcKey)
end

local CASTBAR_KEY_MAP = {
    player = { enable = "enablePlayerCastbar", time = "showPlayerCastTime", icon = "castbarPlayerShowIcon", name = "castbarPlayerShowSpellName" },
    target = { enable = "enableTargetCastbar", time = "showTargetCastTime", icon = "castbarTargetShowIcon", name = "castbarTargetShowSpellName" },
    focus  = { enable = "enableFocusCastbar",  time = "showFocusCastTime",  icon = "castbarFocusShowIcon",  name = "castbarFocusShowSpellName" },
    boss   = { enable = "enableBossCastbar",   time = "showBossCastTime",   icon = "showBossCastIcon",      name = "showBossCastName" },
}

local function CopyCastbar(g, src, dst)
    src, dst = CanonUnitKey(src), CanonUnitKey(dst)
    local s, d = CASTBAR_KEY_MAP[src], CASTBAR_KEY_MAP[dst]
    if not s or not d then return end
    g[d.enable] = g[s.enable]
    g[d.time] = g[s.time]
    g[d.icon] = g[s.icon]
    g[d.name] = g[s.name]
end

local function EnsureCopyDialog()
    if not StaticPopupDialogs or StaticPopupDialogs.MSUF2_COPY_TO_ALL_CONFIRM then return end
    StaticPopupDialogs.MSUF2_COPY_TO_ALL_CONFIRM = {
        text = "Copy these settings to ALL unitframes?\n\nThis will overwrite existing settings on Player/Target/Focus/Boss/Pet/Target of Target.",
        button1 = YES or "Yes",
        button2 = NO or "No",
        OnAccept = function(_, data)
            if type(data) == "function" then data() end
        end,
        timeout = 0,
        whileDead = true,
        hideOnEscape = true,
        preferredIndex = 3,
    }
end

local function ConfirmCopyToAll(callback)
    if type(callback) ~= "function" then return end
    local legacy = _G.MSUF_ConfirmCopyToAll
    if type(legacy) == "function" then
        legacy(callback)
        return
    end
    EnsureCopyDialog()
    if StaticPopup_Show then
        StaticPopup_Show("MSUF2_COPY_TO_ALL_CONFIRM", nil, nil, callback)
    else
        callback()
    end
end

local function CopyUnitSettings(unit, target, scopes)
    M.EnsureDB()
    _G.MSUF_DB = _G.MSUF_DB or {}
    _G.MSUF_DB.general = _G.MSUF_DB.general or {}
    local g = _G.MSUF_DB.general
    local src, srcKey = EnsureUnitDB(unit)
    if not src or not srcKey then return end

    target = (type(target) == "string") and target:lower() or DefaultCopyTarget(srcKey)
    scopes = (type(scopes) == "table") and scopes or NewCopyScopeDefaults()

    local function CopyOne(toKey)
        local dst, dstKey = EnsureUnitDB(toKey)
        if not dst or not dstKey or dstKey == srcKey then return end

        if scopes.basics then CopyFields(dst, src, COPY_FRAME_BASIC_FIELDS) end
        if scopes.text then
            CopyFields(dst, src, COPY_TEXT_FIELDS)
            dst.hpPowerTextOverride = nil
        end
        if scopes.portrait then
            CopyFields(dst, src, COPY_PORTRAIT_FIELDS)
            dst.portraitDecoOverride = nil
        end
        if scopes.power then CopyPowerBarFields(dst, src, srcKey) end
        if scopes.status then
            CopyFields(dst, src, COPY_INDICATOR_FIELDS)
            CopyFields(dst, src, COPY_STATUSICON_FIELDS)
        end
        if scopes.castbar then
            dst.showInterrupt = src.showInterrupt
            CopyCastbar(g, srcKey, dstKey)
        end
        if scopes.load then CopyFields(dst, src, COPY_LOAD_CONDITION_FIELDS) end
        if scopes.transparency then CopyFields(dst, src, COPY_TRANSPARENCY_FIELDS) end
        if scopes.layout then CopyFields(dst, src, COPY_LAYOUT_FIELDS) end
        if scopes.portrait then
            Call("MSUF_Portraits_SyncUnit", dstKey)
            Call("MSUF_PortraitDecoration_SyncUnit", dstKey)
        end
        M.RequestUnitApply(dstKey, "MSUF2_COPY_UNIT", {
            preview = true,
            text = scopes.text or scopes.status,
            power = scopes.power,
            alpha = scopes.transparency,
            castbar = scopes.castbar,
        })
    end

    local function FinishCopy()
        if scopes.castbar then Call("MSUF_UpdateCastbarVisuals") end
        if scopes.status then
            Call("MSUF_RefreshAllIndicators")
            Call("MSUF_RefreshStatusIndicators")
        end
        if scopes.transparency then Call("MSUF_RefreshAllUnitAlphas") end
        Call("MSUF_UFPreview_RequestRefresh", "COPY_UNIT_SETTINGS")
    end

    if target == "all" then
        ConfirmCopyToAll(function()
            for i = 1, #UNIT_COPY_TARGETS do
                local value = UNIT_COPY_TARGETS[i].value
                if value ~= srcKey then CopyOne(value) end
            end
            FinishCopy()
        end)
        return
    end

    target = CanonUnitKey(target)
    if not target or target == srcKey then return end
    CopyOne(target)
    FinishCopy()
end

local function ToggleEditMode(unit)
    if type(_G.MSUF_BlockConfigCombatLocked) == "function" and _G.MSUF_BlockConfigCombatLocked() then return end
    if _G.InCombatLockdown and _G.InCombatLockdown() then
        if type(_G.MSUF_ShowConfigCombatLockMessage) == "function" then _G.MSUF_ShowConfigCombatLockMessage() end
        return
    end
    local active = (_G.MSUF_IsMSUFEditModeActive and _G.MSUF_IsMSUFEditModeActive()) or _G.MSUF_UnitEditModeActive
    if type(_G.MSUF_SetMSUFEditModeDirect) == "function" then
        _G.MSUF_SetMSUFEditModeDirect(not active, CanonUnitKey(unit))
    end
end

local function IsEditModeActive()
    return ((_G.MSUF_IsMSUFEditModeActive and _G.MSUF_IsMSUFEditModeActive()) or _G.MSUF_UnitEditModeActive) and true or false
end

local bossPagePreviewEvents
local bossPagePreviewPendingCleanup
local function BossPagePreviewInCombat()
    return (_G.InCombatLockdown and _G.InCombatLockdown())
        or (_G.UnitAffectingCombat and _G.UnitAffectingCombat("player"))
end

local function SyncBossPagePreview()
    local active = (_G.MSUF2_BossUnitframePreviewActive == true)
    if BossPagePreviewInCombat() then
        if active then
            _G.MSUF2_BossUnitframePreviewActive = nil
            bossPagePreviewPendingCleanup = true
        end
        return
    end
    if not BossPagePreviewInCombat() and type(_G.MSUF_ApplyBossUnitframePreviewState) == "function" then
        _G.MSUF_ApplyBossUnitframePreviewState(active, active and "MSUF2_BOSS_PAGE" or "MSUF2_BOSS_PAGE_OFF")
        return
    end
    if type(_G.MSUF_SyncBossUnitframePreviewWithUnitEdit) == "function" then
        pcall(_G.MSUF_SyncBossUnitframePreviewWithUnitEdit)
    end
end

local function EnsureBossPagePreviewEvents()
    if bossPagePreviewEvents then return bossPagePreviewEvents end
    bossPagePreviewEvents = CreateFrame("Frame")
    bossPagePreviewEvents:SetScript("OnEvent", function(self, event)
        if event == "PLAYER_REGEN_ENABLED" and bossPagePreviewPendingCleanup then
            bossPagePreviewPendingCleanup = nil
            SyncBossPagePreview()
            if _G.MSUF2_BossUnitframePreviewActive ~= true then
                self:UnregisterAllEvents()
            end
            return
        end
        if _G.MSUF2_BossUnitframePreviewActive == true then
            SyncBossPagePreview()
        end
    end)
    return bossPagePreviewEvents
end

local function SetBossPagePreviewActive(active)
    active = active and true or false
    if active and BossPagePreviewInCombat() then
        _G.MSUF2_BossUnitframePreviewActive = nil
        bossPagePreviewPendingCleanup = nil
        if bossPagePreviewEvents then bossPagePreviewEvents:UnregisterAllEvents() end
        return
    end
    local current = _G.MSUF2_BossUnitframePreviewActive == true
    if current == active then
        if active and not BossPagePreviewInCombat() then SyncBossPagePreview() end
        if not active and _G.MSUF_BossTestMode == true and not BossPagePreviewInCombat() then SyncBossPagePreview() end
        return
    end

    _G.MSUF2_BossUnitframePreviewActive = active or nil

    local events = EnsureBossPagePreviewEvents()
    if active then
        bossPagePreviewPendingCleanup = nil
        events:RegisterEvent("PLAYER_REGEN_DISABLED")
        events:RegisterEvent("PLAYER_REGEN_ENABLED")
    elseif BossPagePreviewInCombat() then
        bossPagePreviewPendingCleanup = true
        events:UnregisterEvent("PLAYER_REGEN_DISABLED")
        events:RegisterEvent("PLAYER_REGEN_ENABLED")
        return
    else
        bossPagePreviewPendingCleanup = nil
        events:UnregisterAllEvents()
    end

    SyncBossPagePreview()
    if active and C_Timer and C_Timer.After then
        C_Timer.After(0, SyncBossPagePreview)
        C_Timer.After(0.12, SyncBossPagePreview)
    end
end

local function ReadBool(unit, key, default)
    local conf = GetConf(unit)
    local value = conf[key]
    if value == nil then return default and true or false end
    return value and true or false
end

local function SetBool(unit, key, value, reason, opts)
    M.SetUnitValue(unit, key, value and true or false, reason, opts)
end

local function ReadNumber(unit, key, default)
    local conf = GetConf(unit)
    local value = tonumber(conf[key])
    if value == nil then value = default or 0 end
    return value
end

local function SetNumber(unit, key, value, reason, opts)
    value = tonumber(value)
    if value == nil then return end
    if math.abs(value - floor(value + 0.5)) < 0.001 then
        value = floor(value + 0.5)
    end
    M.SetUnitValue(unit, key, value, reason, opts)
end

local function ReadString(unit, key, default)
    local conf = GetConf(unit)
    local value = conf[key]
    if type(value) ~= "string" or value == "" then value = default end
    return value or ""
end

local function SetString(unit, key, value, reason, opts)
    M.SetUnitValue(unit, key, tostring(value or ""), reason, opts)
end

local function ReadGeneralBool(key, default)
    local g = GetGeneral()
    local value = g[key]
    if value == nil then return default and true or false end
    return value and true or false
end

local function SetGeneralBool(key, value, reason, opts)
    M.SetGeneralValue(key, value and true or false, reason, opts)
end

local function ClampStatusLayer(value, default)
    value = tonumber(value) or default or 7
    value = floor(value + 0.5)
    if value < 1 then return 1 end
    if value > 10 then return 10 end
    return value
end

local function StatusAllowed(unit, spec)
    return spec and (not spec.allowed or spec.allowed(unit))
end

local function StatusValues(unit)
    local values = {}
    for i = 1, #STATUS_CONTROLS do
        local spec = STATUS_CONTROLS[i]
        if StatusAllowed(unit, spec) then
            values[#values + 1] = { value = spec.value, text = spec.text }
        end
    end
    return values
end

local function FindStatusSpec(unit, value)
    for i = 1, #STATUS_CONTROLS do
        local spec = STATUS_CONTROLS[i]
        if spec.value == value and StatusAllowed(unit, spec) then return spec end
    end
    for i = 1, #STATUS_CONTROLS do
        local spec = STATUS_CONTROLS[i]
        if StatusAllowed(unit, spec) then return spec end
    end
    return nil
end

local function CurrentStatusSpec(unit)
    M.unitStatusSelection = M.unitStatusSelection or {}
    local spec = FindStatusSpec(unit, M.unitStatusSelection[unit])
    if spec then M.unitStatusSelection[unit] = spec.value end
    return spec
end

local function ReadStatusBool(unit, key, default)
    local conf = GetConf(unit)
    local g = GetGeneral()
    local value = conf[key]
    if value == nil then value = g[key] end
    if value == nil then return default and true or false end
    return value and true or false
end

local function ReadStatusNumber(unit, key, default)
    local conf = GetConf(unit)
    local g = GetGeneral()
    local value = tonumber(conf[key])
    if value == nil then value = tonumber(g[key]) end
    if value == nil then value = default or 0 end
    return value
end

local function ReadStatusString(unit, key, default)
    local conf = GetConf(unit)
    local g = GetGeneral()
    local value = conf[key]
    if type(value) ~= "string" or value == "" then value = g[key] end
    if type(value) ~= "string" or value == "" then value = default end
    return value or ""
end

local function RefreshStatusRuntime(unit, spec)
    if spec and spec.refresh then Call(spec.refresh) end
    if spec and spec.statusRuntime then
        Call("MSUF_RefreshStatusIndicators")
        Call("MSUF_RequestStatusIconsRefreshForCurrent")
    end
    if spec and spec.value == "level" then
        Call("MSUF_UpdateAllFonts_Immediate")
        Call("MSUF_UpdateAllFonts")
        if unit == "boss" and _G.MSUF_BossTestMode and type(_G.MSUF_ApplyBossUnitframePreviewState) == "function" then
            _G.MSUF_ApplyBossUnitframePreviewState(true, "MSUF2_LEVEL_INDICATOR")
        end
    end
    M.RequestUnitApply(unit, "MSUF2_STATUS_INDICATOR", { preview = true, text = true })
end

local function SetControlEnabled(control, enabled)
    W.SetControlEnabled(control, enabled)
end

local function SeedText(unit)
    local conf = GetConf(unit)
    if type(_G.MSUF_Bars_SeedTextFromGeneral) == "function" then
        pcall(_G.MSUF_Bars_SeedTextFromGeneral, conf)
    end
    return conf
end

local function ReadText(unit, key, default)
    local conf = SeedText(unit)
    if conf[key] ~= nil then return conf[key] end
    local g = GetGeneral()
    if g[key] ~= nil then return g[key] end
    return default
end

local function SetText(unit, key, value, reason)
    local conf = SeedText(unit)
    if conf[key] == value then return end
    conf[key] = value
    conf.hpPowerTextOverride = nil
    M.RequestUnitApply(unit, reason or "MSUF2_TEXT", { text = true, preview = true })
end

local function NormalizePortrait(unit)
    local conf = GetConf(unit)
    local value = conf.portraitMode or "OFF"
    if value ~= "LEFT" and value ~= "RIGHT" then value = "OFF" end
    return value
end

local function SetPortraitValue(unit, key, value, reason)
    if M.SetUnitValue(unit, key, value, reason or "MSUF2_PORTRAIT", { preview = true }) then
        Call("MSUF_Portraits_SyncUnit", unit)
        Call("MSUF_PortraitDecoration_SyncUnit", unit)
        Call("MSUF_PortraitDecoration_RefreshAll")
    end
end

local function NormalizeAlphaMode(value)
    if value == 1 or value == "background" then return "background" end
    if value == 2 or value == "health" then return "health" end
    return "foreground"
end

local function AlphaModeValue(mode)
    if mode == "background" then return 1 end
    if mode == "health" then return 2 end
    return 0
end

local function NormalizeBossLayoutMode(value, legacyInvert)
    if type(value) == "string" and BOSS_LAYOUT_VALID[value] then return value end
    if legacyInvert == true then return "VERTICAL_UP" end
    return "VERTICAL_DOWN"
end

local function UpdateLoadActive(unit)
    local conf = GetConf(unit)
    local active = false
    for i = 1, #LOAD_CONDITIONS do
        if conf[LOAD_CONDITIONS[i].key] == true then
            active = true
            break
        end
    end
    conf.loadCondActive = active or nil
end

local UnitPage = M.UnitPage or {}
M.UnitPage = UnitPage
UnitPage.UNIT_PAGES = UNIT_PAGES
UnitPage.POWER_UNITS = POWER_UNITS
UnitPage.CASTBAR_FIELDS = CASTBAR_FIELDS
UnitPage.LOAD_CONDITIONS = LOAD_CONDITIONS
UnitPage.STATUS_ANCHORS = STATUS_ANCHORS
UnitPage.STATUS_CORNER_ANCHORS = STATUS_CORNER_ANCHORS
UnitPage.STATUS_LEVEL_ANCHORS = STATUS_LEVEL_ANCHORS
UnitPage.COMBAT_SYMBOLS = COMBAT_SYMBOLS
UnitPage.RESTED_SYMBOLS = RESTED_SYMBOLS
UnitPage.RESS_SYMBOLS = RESS_SYMBOLS
UnitPage.DEFAULT_SYMBOLS = DEFAULT_SYMBOLS
UnitPage.STATUS_CONTROLS = STATUS_CONTROLS
UnitPage.TEXT_ANCHORS = TEXT_ANCHORS
UnitPage.HP_MODES = HP_MODES
UnitPage.POWER_MODES = POWER_MODES
UnitPage.BOSS_LAYOUT_OPTIONS = BOSS_LAYOUT_OPTIONS
UnitPage.BOSS_LAYOUT_VALID = BOSS_LAYOUT_VALID
UnitPage.SEPARATORS = SEPARATORS
UnitPage.PORTRAIT_RENDER = PORTRAIT_RENDER
UnitPage.PORTRAIT_SHAPES = PORTRAIT_SHAPES
UnitPage.PORTRAIT_BORDERS = PORTRAIT_BORDERS
UnitPage.UNIT_COPY_TARGETS = UNIT_COPY_TARGETS
UnitPage.UF_COPY_CATEGORIES = UF_COPY_CATEGORIES
UnitPage.GetConf = GetConf
UnitPage.GetGeneral = GetGeneral
UnitPage.GetBars = GetBars
UnitPage.Call = Call
UnitPage.DeepCopy = DeepCopy
UnitPage.DefaultCopyTarget = DefaultCopyTarget
UnitPage.UnitTopLabel = UnitTopLabel
UnitPage.UnitTopPillWidth = UnitTopPillWidth
UnitPage.NewCopyScopeDefaults = NewCopyScopeDefaults
UnitPage.CopyUnitSettings = CopyUnitSettings
UnitPage.ToggleEditMode = ToggleEditMode
UnitPage.IsEditModeActive = IsEditModeActive
UnitPage.SetBossPagePreviewActive = SetBossPagePreviewActive
UnitPage.ReadBool = ReadBool
UnitPage.SetBool = SetBool
UnitPage.ReadNumber = ReadNumber
UnitPage.SetNumber = SetNumber
UnitPage.ReadString = ReadString
UnitPage.SetString = SetString
UnitPage.ReadGeneralBool = ReadGeneralBool
UnitPage.SetGeneralBool = SetGeneralBool
UnitPage.ClampStatusLayer = ClampStatusLayer
UnitPage.StatusAllowed = StatusAllowed
UnitPage.StatusValues = StatusValues
UnitPage.FindStatusSpec = FindStatusSpec
UnitPage.CurrentStatusSpec = CurrentStatusSpec
UnitPage.ReadStatusBool = ReadStatusBool
UnitPage.ReadStatusNumber = ReadStatusNumber
UnitPage.ReadStatusString = ReadStatusString
UnitPage.RefreshStatusRuntime = RefreshStatusRuntime
UnitPage.SetControlEnabled = SetControlEnabled
UnitPage.SeedText = SeedText
UnitPage.ReadText = ReadText
UnitPage.SetText = SetText
UnitPage.NormalizePortrait = NormalizePortrait
UnitPage.SetPortraitValue = SetPortraitValue
UnitPage.NormalizeAlphaMode = NormalizeAlphaMode
UnitPage.AlphaModeValue = AlphaModeValue
UnitPage.NormalizeBossLayoutMode = NormalizeBossLayoutMode
UnitPage.UpdateLoadActive = UpdateLoadActive
