Preview + Unit-tests for color conversions

1 files changed, 42 insertions, 0 deletions

diff --git a/internal/preview/preview.go b/internal/preview/preview.go
new file mode 100644
index 0000000..ef4c9f0
--- /dev/null
+++ b/internal/preview/preview.go
@@ -0,0 +1,42 @@
+package preview
+
+import (
+	"strings"
+
+	tea "github.com/charmbracelet/bubbletea"
+	"github.com/charmbracelet/lipgloss"
+)
+
+const runeBlock = "█"
+
+type Model struct {
+	size int // height of the square in rows
+	hex  string
+}
+
+func (m *Model) Color(hex string) {
+	m.hex = hex
+}
+
+func New(hex string) *Model {
+	return &Model{
+		size: 5,
+		hex:  hex,
+	}
+}
+
+func (m Model) Init() tea.Cmd {
+	return nil
+}
+
+func (m Model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
+	return m, nil
+}
+
+func (m Model) View() string {
+	style := lipgloss.NewStyle().Foreground(lipgloss.Color(m.hex))
+	// size is doubled since terminal cells are 2:1 (h:w)
+	oneRow := strings.Repeat(runeBlock, m.size*2)
+	block := strings.Repeat(oneRow+"\n", m.size)
+	return style.Render(block)
+}