charm_theme.go

// Copyright 2022-2026 Salesforce, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package iostreams

// Slack brand theme for charmbracelet/huh prompts.
// Uses official Slack brand colors to give the CLI a fun, playful feel.

import (
	"github.com/charmbracelet/huh"
	"github.com/charmbracelet/lipgloss"
)

// Slack brand colors
var (
	slackAubergine       = lipgloss.Color("#4a154b")
	slackBrightAuberg    = lipgloss.Color("#611f69")
	slackBlue            = lipgloss.Color("#36c5f0")
	slackGreen           = lipgloss.Color("#2eb67d")
	slackYellow          = lipgloss.Color("#ecb22e")
	slackRed             = lipgloss.Color("#e01e5a")
	slackPool            = lipgloss.Color("#78d7dd")
	slackLegalGray       = lipgloss.Color("#5e5d60")
	slackOptionText      = lipgloss.AdaptiveColor{Light: "#1d1c1d", Dark: "#f4ede4"}
	slackDescriptionText = lipgloss.AdaptiveColor{Light: "#454447", Dark: "#b9b5b0"}
	slackPlaceholderText = lipgloss.AdaptiveColor{Light: "#5e5d60", Dark: "#868380"}
)

// ThemeSlack returns a huh theme styled with Slack brand colors.
func ThemeSlack() *huh.Theme {
	t := huh.ThemeBase()

	// Focused field styles
	t.Focused.Base = t.Focused.Base.
		BorderForeground(slackBrightAuberg)
	t.Focused.Title = lipgloss.NewStyle().
		Foreground(slackAubergine).
		Bold(true)
	t.Focused.Description = lipgloss.NewStyle().
		Foreground(slackDescriptionText)
	t.Focused.ErrorIndicator = lipgloss.NewStyle().
		Foreground(slackRed).
		SetString(" *")
	t.Focused.ErrorMessage = lipgloss.NewStyle().
		Foreground(slackRed)

	// Select styles
	t.Focused.SelectSelector = lipgloss.NewStyle().
		Foreground(slackBlue).
		SetString("> ")
	t.Focused.Option = lipgloss.NewStyle().
		Foreground(slackOptionText)
	t.Focused.NextIndicator = lipgloss.NewStyle().
		Foreground(slackPool).
		MarginLeft(1).
		SetString("↓")
	t.Focused.PrevIndicator = lipgloss.NewStyle().
		Foreground(slackPool).
		MarginRight(1).
		SetString("↑")

	// Multi-select styles
	t.Focused.MultiSelectSelector = lipgloss.NewStyle().
		Foreground(slackYellow).
		SetString("> ")
	t.Focused.SelectedOption = lipgloss.NewStyle().
		Foreground(slackGreen)
	t.Focused.SelectedPrefix = lipgloss.NewStyle().
		Foreground(slackGreen).
		SetString("[✓] ")
	t.Focused.UnselectedOption = lipgloss.NewStyle().
		Foreground(slackOptionText)
	t.Focused.UnselectedPrefix = lipgloss.NewStyle().
		Foreground(slackLegalGray).
		SetString("[ ] ")

	// Text input styles
	t.Focused.TextInput.Cursor = lipgloss.NewStyle().
		Foreground(slackYellow)
	t.Focused.TextInput.Prompt = lipgloss.NewStyle().
		Foreground(slackBlue)
	t.Focused.TextInput.Placeholder = lipgloss.NewStyle().
		Foreground(slackPlaceholderText)
	t.Focused.TextInput.Text = lipgloss.NewStyle().
		Foreground(slackOptionText)

	// Button styles
	button := lipgloss.NewStyle().
		Padding(0, 2).
		MarginRight(1)
	t.Focused.FocusedButton = button.
		Foreground(lipgloss.Color("#fff")).
		Background(slackAubergine).
		Bold(true)
	t.Focused.BlurredButton = button.
		Foreground(slackLegalGray).
		Background(lipgloss.Color("#000"))

	// Blurred field styles — subdued version of focused
	t.Blurred = t.Focused
	t.Blurred.Base = t.Focused.Base.
		BorderStyle(lipgloss.HiddenBorder())
	t.Blurred.SelectSelector = lipgloss.NewStyle().SetString("  ")
	t.Blurred.MultiSelectSelector = lipgloss.NewStyle().SetString("  ")
	t.Blurred.NextIndicator = lipgloss.NewStyle()
	t.Blurred.PrevIndicator = lipgloss.NewStyle()

	return t
}