package ui

import (
	"strings"

	"github.com/charmbracelet/lipgloss"
)

// Color definitions (Hex palette)
const (
	ColorBg        = "#0b1017" // Dark slate background
	ColorCardBg    = "#121a24" // Dark grey cards
	ColorBorder    = "#2e3b4e" // Dark slate borders
	ColorText      = "#e0ecf6" // Light grey text
	ColorSubdued   = "#8c9ba5" // Subdued slate text
	ColorCyan      = "#00ffd2" // Bright teal/cyan accent
	ColorPink      = "#ff2a85" // Hot pink accent
	ColorGreen     = "#3cd58c" // Vibrant green (completed)
	ColorYellow    = "#f4b942" // Amber/yellow (downloading)
	ColorRed       = "#ff5555" // Bright red (error/missing)
	ColorBlue      = "#00aeff" // Vibrant blue (dht)
)

var (
	// Base styles
	StyleBg = lipgloss.NewStyle().
		Background(lipgloss.Color(ColorBg)).
		Foreground(lipgloss.Color(ColorText))

	StyleTitle = lipgloss.NewStyle().
		Bold(true).
		Foreground(lipgloss.Color(ColorCyan)).
		Border(lipgloss.DoubleBorder(), true).
		BorderForeground(lipgloss.Color(ColorCyan)).
		Padding(0, 2).
		MarginBottom(1)

	StyleHeader = lipgloss.NewStyle().
		Bold(true).
		Foreground(lipgloss.Color(ColorPink)).
		MarginBottom(1)

	// Status states
	StyleStatusIdle = lipgloss.NewStyle().
		Bold(true).
		Foreground(lipgloss.Color(ColorSubdued))

	StyleStatusActive = lipgloss.NewStyle().
		Bold(true).
		Foreground(lipgloss.Color(ColorYellow))

	StyleStatusDone = lipgloss.NewStyle().
		Bold(true).
		Foreground(lipgloss.Color(ColorGreen))

	StyleStatusError = lipgloss.NewStyle().
		Bold(true).
		Foreground(lipgloss.Color(ColorRed))

	// KPI Cards
	StyleCard = lipgloss.NewStyle().
		Background(lipgloss.Color(ColorCardBg)).
		Border(lipgloss.RoundedBorder()).
		BorderForeground(lipgloss.Color(ColorBorder)).
		Padding(0, 1).
		Align(lipgloss.Left)

	StyleCardActive = StyleCard.
		BorderForeground(lipgloss.Color(ColorCyan))

	StyleCardTitle = lipgloss.NewStyle().
		Bold(true).
		Foreground(lipgloss.Color(ColorSubdued))

	StyleCardValue = lipgloss.NewStyle().
		Bold(true).
		Foreground(lipgloss.Color(ColorText))

	// Tabs
	StyleTab = lipgloss.NewStyle().
		Padding(0, 2).
		Background(lipgloss.Color(ColorCardBg)).
		Foreground(lipgloss.Color(ColorSubdued)).
		Border(lipgloss.NormalBorder(), false, true, false, false).
		BorderForeground(lipgloss.Color(ColorBorder))

	StyleActiveTab = lipgloss.NewStyle().
		Bold(true).
		Padding(0, 2).
		Background(lipgloss.Color(ColorCardBg)).
		Foreground(lipgloss.Color(ColorCyan)).
		Border(lipgloss.NormalBorder(), true, true, false, true).
		BorderForeground(lipgloss.Color(ColorCyan))

	StyleTabsRow = lipgloss.NewStyle().
		Border(lipgloss.NormalBorder(), false, false, true, false).
		BorderForeground(lipgloss.Color(ColorBorder)).
		MarginBottom(1)

	// Input form
	StyleInputLabel = lipgloss.NewStyle().
		Bold(true).
		Foreground(lipgloss.Color(ColorCyan)).
		Width(15)

	StyleInputFocused = lipgloss.NewStyle().
		Foreground(lipgloss.Color(ColorCyan)).
		BorderForeground(lipgloss.Color(ColorCyan))

	StyleInputUnfocused = lipgloss.NewStyle().
		Foreground(lipgloss.Color(ColorSubdued)).
		BorderForeground(lipgloss.Color(ColorBorder))

	// Help bar
	StyleHelp = lipgloss.NewStyle().
		Foreground(lipgloss.Color(ColorSubdued)).
		MarginTop(1)

	StyleKey = lipgloss.NewStyle().
		Bold(true).
		Foreground(lipgloss.Color(ColorPink))

	// Tables
	StyleTableHeader = lipgloss.NewStyle().
		Bold(true).
		Foreground(lipgloss.Color(ColorCyan))

	StyleTableRowSelected = lipgloss.NewStyle().
		Background(lipgloss.Color(ColorBorder)).
		Foreground(lipgloss.Color(ColorCyan)).
		Bold(true)

	// Grid colors
	StylePieceCompleted   = lipgloss.NewStyle().Foreground(lipgloss.Color(ColorGreen))
	StylePieceDownloading = lipgloss.NewStyle().Foreground(lipgloss.Color(ColorYellow))
	StylePieceMissing     = lipgloss.NewStyle().Foreground(lipgloss.Color(ColorBorder))

	// ── Кэшированные стили для горячих путей рендеринга ──────────────────────

	// Dashboard header
	StyleHeaderBrand  = lipgloss.NewStyle().Foreground(lipgloss.Color(ColorPink)).Bold(true)
	StyleHeaderSep    = lipgloss.NewStyle().Foreground(lipgloss.Color(ColorBorder))
	StyleHeaderName   = lipgloss.NewStyle().Foreground(lipgloss.Color(ColorText))
	StyleHeaderIcon   = lipgloss.NewStyle().Foreground(lipgloss.Color(ColorSubdued))
	StyleHeaderLine   = lipgloss.NewStyle().
		Border(lipgloss.NormalBorder(), false, false, true, false).
		BorderForeground(lipgloss.Color(ColorBorder)).
		PaddingBottom(0)

	// Phase status styles
	StylePhaseStopped    = lipgloss.NewStyle().Foreground(lipgloss.Color(ColorSubdued)).Bold(true)
	StylePhaseFailed     = lipgloss.NewStyle().Foreground(lipgloss.Color(ColorRed)).Bold(true)
	StylePhaseSeeding    = lipgloss.NewStyle().Foreground(lipgloss.Color(ColorGreen)).Bold(true)
	StylePhaseDownload   = lipgloss.NewStyle().Foreground(lipgloss.Color(ColorCyan)).Bold(true)
	StylePhaseDefault    = lipgloss.NewStyle().Foreground(lipgloss.Color(ColorYellow)).Bold(true)

	// KPI cards
	StyleKPIProgress  = lipgloss.NewStyle().Bold(true).Foreground(lipgloss.Color(ColorCyan))
	StyleKPIDown      = lipgloss.NewStyle().Bold(true).Foreground(lipgloss.Color(ColorGreen))
	StyleKPIUp        = lipgloss.NewStyle().Bold(true).Foreground(lipgloss.Color(ColorYellow))
	StyleKPIEta       = lipgloss.NewStyle().Bold(true).Foreground(lipgloss.Color(ColorPink))
	StyleKPIPeers     = lipgloss.NewStyle().Bold(true).Foreground(lipgloss.Color(ColorText))
	StyleKPIBarFill   = lipgloss.NewStyle().Foreground(lipgloss.Color(ColorCyan))
	StyleKPIBarEmpty  = lipgloss.NewStyle().Foreground(lipgloss.Color(ColorBorder))

	// Menu styles
	StyleMenuText     = lipgloss.NewStyle().Foreground(lipgloss.Color(ColorText))
	StyleMenuDesc     = lipgloss.NewStyle().Foreground(lipgloss.Color(ColorSubdued))
	StyleMenuActive   = lipgloss.NewStyle().Foreground(lipgloss.Color(ColorCyan)).Bold(true)
	StyleMenuCursor   = lipgloss.NewStyle().Foreground(lipgloss.Color(ColorPink))
	StyleMenuHelp     = lipgloss.NewStyle().Foreground(lipgloss.Color(ColorSubdued)).MarginTop(2)
	StyleMenuBorder   = lipgloss.NewStyle().Foreground(lipgloss.Color(ColorBorder))
	StyleMenuPadding  = lipgloss.NewStyle().Padding(2, 4)
	StyleMenuBox      = lipgloss.NewStyle().Padding(2, 0)

	// Log overlay styles
	StyleLogTime     = lipgloss.NewStyle().Foreground(lipgloss.Color(ColorSubdued))
	StyleLogEngine   = lipgloss.NewStyle().Foreground(lipgloss.Color(ColorPink)).Bold(true)
	StyleLogDHT      = lipgloss.NewStyle().Foreground(lipgloss.Color(ColorBlue)).Bold(true)
	StyleLogPeer     = lipgloss.NewStyle().Foreground(lipgloss.Color(ColorGreen)).Bold(true)
	StyleLogSys      = lipgloss.NewStyle().Foreground(lipgloss.Color(ColorCyan)).Bold(true)
	StyleLogDefault  = lipgloss.NewStyle().Foreground(lipgloss.Color(ColorText)).Bold(true)
	StyleLogError    = lipgloss.NewStyle().Foreground(lipgloss.Color(ColorRed)).Bold(true)
	StyleLogWarn     = lipgloss.NewStyle().Foreground(lipgloss.Color(ColorYellow)).Bold(true)
	StyleLogInfo     = lipgloss.NewStyle().Foreground(lipgloss.Color(ColorCyan))
	StyleLogDebug    = lipgloss.NewStyle().Foreground(lipgloss.Color(ColorSubdued))
	StyleLogMsg      = lipgloss.NewStyle().Foreground(lipgloss.Color(ColorText))
	StyleLogMsgError = lipgloss.NewStyle().Foreground(lipgloss.Color(ColorRed))

	// Overview styles
	StyleSectionTitle = lipgloss.NewStyle().Bold(true).Foreground(lipgloss.Color(ColorCyan))
	StyleDim          = lipgloss.NewStyle().Foreground(lipgloss.Color(ColorSubdued))
	StyleVal          = lipgloss.NewStyle().Foreground(lipgloss.Color(ColorText))
	StyleSpeedDown    = lipgloss.NewStyle().Foreground(lipgloss.Color(ColorGreen)).Bold(true)
	StyleSpeedUp      = lipgloss.NewStyle().Foreground(lipgloss.Color(ColorYellow)).Bold(true)
	StyleETA          = lipgloss.NewStyle().Foreground(lipgloss.Color(ColorPink)).Bold(true)
	StyleErrText      = lipgloss.NewStyle().Foreground(lipgloss.Color(ColorRed)).Bold(true)

	// HelpBar
	StyleHelpKey  = lipgloss.NewStyle().Foreground(lipgloss.Color(ColorPink)).Bold(true)
	StyleHelpDesc = lipgloss.NewStyle().Foreground(lipgloss.Color(ColorSubdued))
	StyleHelpSep  = lipgloss.NewStyle().Foreground(lipgloss.Color(ColorBorder))
	StyleHelpBar  = lipgloss.NewStyle().
		Foreground(lipgloss.Color(ColorSubdued)).
		Border(lipgloss.NormalBorder(), true, false, false, false).
		BorderForeground(lipgloss.Color(ColorBorder)).
		MarginTop(1).
		PaddingTop(0)

	// Logo
	StyleLogoTorrent = lipgloss.NewStyle().Foreground(lipgloss.Color(ColorText)).Bold(true)
	StyleLogoZ       = lipgloss.NewStyle().Foreground(lipgloss.Color(ColorGreen)).Bold(true)

	// Settings indicator
	StyleSettingsCursor = lipgloss.NewStyle().Foreground(lipgloss.Color(ColorPink))
	StyleSettingsActive = lipgloss.NewStyle().Foreground(lipgloss.Color(ColorCyan)).Bold(true)
	StyleSettingsLabel  = lipgloss.NewStyle().Foreground(lipgloss.Color(ColorSubdued)).Width(26)

	// Additional menu
	StyleAdditCyan  = lipgloss.NewStyle().Bold(true).Foreground(lipgloss.Color(ColorCyan))
	StyleAdditPink  = lipgloss.NewStyle().Foreground(lipgloss.Color(ColorPink)).Bold(true)
	StyleAdditVal   = lipgloss.NewStyle().Foreground(lipgloss.Color(ColorText))
	StyleAdditShort = lipgloss.NewStyle().Foreground(lipgloss.Color(ColorYellow))
)

// Статичные строки, вычисляемые один раз
var (
	// Статичный "torrent" ASCII-арт (не меняется никогда)
	cachedTorrentArt = StyleLogoTorrent.Render(strings.Join([]string{
		"████████╗ ██████╗ ██████╗ ██████╗ ███████╗███╗   ██╗████████╗",
		"╚══██╔══╝██╔═══██╗██╔══██╗██╔══██╗██╔════╝████╗  ██║╚══██╔══╝",
		"   ██║   ██║   ██║██████╔╝██████╔╝█████╗  ██╔██╗ ██║   ██║   ",
		"   ██║   ██║   ██║██╔══██╗██╔══██╗██╔══╝  ██║╚████║   ██║   ",
		"   ██║   ╚██████╔╝██║  ██║██║  ██║███████╗██║ ╚███║   ██║   ",
		"   ╚═╝    ╚═════╝ ╚═╝  ╚═╝╚═╝  ╚═╝╚══════╝╚═╝  ╚══╝   ╚═╝   ",
	}, "\n"))

	// Статичный Z-логотип (при отключённых анимациях)
	cachedStaticZArt = StyleLogoZ.Render(strings.Join([]string{
		"        ",
		"        ",
		"███████╗",
		"╚════██║",
		"    ██╔╝",
		"   ██╔╝ ",
		"  ██╔╝  ",
		"  ███████╗",
		"  ╚══════╝",
		"        ",
		"        ",
		"        ",
	}, "\n"))

	// Статичный help bar главного меню
	cachedMenuHelp = StyleMenuHelp.Render("  ↓↑ — выбор   Enter — подтвердить   Q — выход")

	// Статичные строки рамки меню (зависят от boxWidth=85, не меняются)
	cachedMenuTopBorder    = StyleMenuBorder.Render("╭" + strings.Repeat("─", 85) + "╮")
	cachedMenuBottomBorder = StyleMenuBorder.Render("╰" + strings.Repeat("─", 85) + "╯")
	cachedMenuLeftEdge     = StyleMenuBorder.Render("│")
	cachedMenuRightEdge    = StyleMenuBorder.Render("│")

	// Help bar dashboard
	cachedHelpSep = StyleHelpSep.Render("  │  ")
)