package common

import (
	"log/slog"
	"strconv"
	"strings"

	// "github.com/charmbracelet/bubbles/table"

	"github.com/charmbracelet/huh"
	"github.com/charmbracelet/lipgloss"

	"tasksquire/taskwarrior"
)

type TableStyle struct {
	Header   lipgloss.Style
	Cell     lipgloss.Style
	Selected lipgloss.Style
}

type Styles struct {
	Colors map[string]*lipgloss.Style

	Base lipgloss.Style

	Form       *huh.Theme
	TableStyle TableStyle

	ColumnFocused lipgloss.Style
	ColumnBlurred lipgloss.Style
	ColumnInsert  lipgloss.Style
}

func NewStyles(config *taskwarrior.TWConfig) *Styles {
	styles := Styles{}

	colors := make(map[string]*lipgloss.Style)

	for key, value := range config.GetConfig() {
		if strings.HasPrefix(key, "color.") {
			_, color, _ := strings.Cut(key, ".")
			colors[color] = parseColorString(value)
		}
	}

	styles.Colors = colors

	styles.Base = lipgloss.NewStyle()

	styles.TableStyle = TableStyle{
		// Header: lipgloss.NewStyle().Bold(true).Padding(0, 1).BorderBottom(true),
		Cell:     lipgloss.NewStyle().Padding(0, 1, 0, 0),
		Header:   lipgloss.NewStyle().Bold(true).Padding(0, 1, 0, 0).Underline(true),
		Selected: lipgloss.NewStyle().Bold(true).Reverse(true),
	}

	formTheme := huh.ThemeBase()
	formTheme.Focused.Title = formTheme.Focused.Title.Bold(true)
	formTheme.Focused.SelectSelector = formTheme.Focused.SelectSelector.SetString("→ ")
	formTheme.Focused.SelectedOption = formTheme.Focused.SelectedOption.Bold(true)
	formTheme.Focused.MultiSelectSelector = formTheme.Focused.MultiSelectSelector.SetString("→ ")
	formTheme.Focused.SelectedPrefix = formTheme.Focused.SelectedPrefix.SetString("✓ ")
	formTheme.Focused.UnselectedPrefix = formTheme.Focused.SelectedPrefix.SetString("• ")
	formTheme.Blurred.Title = formTheme.Blurred.Title.Bold(true)
	formTheme.Blurred.SelectSelector = formTheme.Blurred.SelectSelector.SetString("  ")
	formTheme.Blurred.SelectedOption = formTheme.Blurred.SelectedOption.Bold(true)
	formTheme.Blurred.MultiSelectSelector = formTheme.Blurred.MultiSelectSelector.SetString("  ")
	formTheme.Blurred.SelectedPrefix = formTheme.Blurred.SelectedPrefix.SetString("✓ ")
	formTheme.Blurred.UnselectedPrefix = formTheme.Blurred.SelectedPrefix.SetString("• ")

	styles.Form = formTheme

	styles.ColumnFocused = lipgloss.NewStyle().Border(lipgloss.RoundedBorder(), true).Padding(1)
	styles.ColumnBlurred = lipgloss.NewStyle().Border(lipgloss.HiddenBorder(), true).Padding(1)
	styles.ColumnInsert = lipgloss.NewStyle().Border(lipgloss.RoundedBorder(), true).Padding(1)
	if styles.Colors["active"] != nil {
		styles.ColumnInsert = styles.ColumnInsert.BorderForeground(styles.Colors["active"].GetForeground())
	}

	return &styles
}

func parseColorString(color string) *lipgloss.Style {
	if color == "" {
		return nil
	}

	style := lipgloss.NewStyle()

	if strings.Contains(color, "on") {
		fgbg := strings.Split(color, "on")
		fg := strings.TrimSpace(fgbg[0])
		bg := strings.TrimSpace(fgbg[1])
		if fg != "" {
			style = style.Foreground(parseColor(fg))
		}
		if bg != "" {
			style = style.Background(parseColor(bg))
		}
	} else {
		style = style.Foreground(parseColor(strings.TrimSpace(color)))
	}

	return &style
}

func parseColor(color string) lipgloss.Color {
	if strings.HasPrefix(color, "rgb") {
		return lipgloss.Color(convertRgbToAnsi(strings.TrimPrefix(color, "rgb")))
	}
	if strings.HasPrefix(color, "color") {
		return lipgloss.Color(strings.TrimPrefix(color, "color"))
	}
	if strings.HasPrefix(color, "gray") {
		gray, err := strconv.Atoi(strings.TrimPrefix(color, "gray"))
		if err != nil {
			slog.Error("Invalid gray color format")
			return lipgloss.Color("0")
		}
		return lipgloss.Color(strconv.Itoa(gray + 232))
	}
	if ansi, okcolor := colorStrings[color]; okcolor {
		return lipgloss.Color(strconv.Itoa(ansi))
	}

	slog.Error("Invalid color format")
	return lipgloss.Color("0")
}

func convertRgbToAnsi(rgbString string) string {
	var err error

	if len(rgbString) != 3 {
		slog.Error("Invalid RGB color format")
		return ""
	}

	r, err := strconv.Atoi(string(rgbString[0]))
	if err != nil {
		slog.Error("Invalid value for R")
		return ""
	}

	g, err := strconv.Atoi(string(rgbString[1]))
	if err != nil {
		slog.Error("Invalid value for G")
		return ""
	}

	b, err := strconv.Atoi(string(rgbString[2]))
	if err != nil {
		slog.Error("Invalid value for B")
		return ""
	}

	return strconv.Itoa(16 + (36 * r) + (6 * g) + b)
}

var colorStrings = map[string]int{
	"black":          0,
	"red":            1,
	"green":          2,
	"yellow":         3,
	"blue":           4,
	"magenta":        5,
	"cyan":           6,
	"white":          7,
	"bright black":   8,
	"bright red":     9,
	"bright green":   10,
	"bright yellow":  11,
	"bright blue":    12,
	"bright magenta": 13,
	"bright cyan":    14,
	"bright white":   15,
}