Initial commit: dial — interactive SSH host picker

A fast, read-only ~/.ssh/config picker that exec's the system ssh client. Includes: static high-contrast picker with recency/frequency/name sort and tag grouping, `dial keygen` (native ed25519/RSA + optional config entry), and an optional offline YubiKey launch gate with one-time recovery codes. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-07-22 23:18:23 +10:00
commit 8af44dfcd2
31 changed files with 4219 additions and 0 deletions
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+// Package theme centralises dial's visual styling. The brief makes low-light
+// legibility a hard requirement: generous spacing, high contrast, and no dense
+// dim text. These styles encode that — the "muted" tones are still clearly
+// readable, not the near-invisible grey common in dense pickers.
+package theme
+
+import (
+	"hash/fnv"
+
+	"github.com/charmbracelet/lipgloss"
+)
+
+// Theme holds the styles used across the picker.
+type Theme struct {
+	Title     lipgloss.Style
+	Meta      lipgloss.Style // header meta / hints
+	Number    lipgloss.Style // list index
+	NumberSel lipgloss.Style
+	Alias     lipgloss.Style // host alias, resting
+	AliasSel  lipgloss.Style // host alias, highlighted
+	Detail    lipgloss.Style // secondary line (hostname/user)
+	DetailSel lipgloss.Style
+	Tag       lipgloss.Style
+	Star      lipgloss.Style
+	Cursor    lipgloss.Style // the selection bar/marker
+	Preview   lipgloss.Style // preview box border
+	PreviewK  lipgloss.Style // preview key column
+	PreviewV  lipgloss.Style // preview value column
+	FilterBar lipgloss.Style
+	Help      lipgloss.Style
+	Warn      lipgloss.Style
+
+	// tagPalette is a set of distinct high-contrast hues used to colour tag
+	// pills and tag section headers, assigned deterministically per tag name.
+	tagPalette []lipgloss.AdaptiveColor
+	base       lipgloss.Style
+}
+
+// TagStyle returns the pill style for a tag, colour chosen deterministically by
+// the tag name so the same tag is always the same colour. An empty tag name
+// (used for the Favourites/untagged sections) gets a neutral style.
+func (t Theme) TagStyle(tag string) lipgloss.Style {
+	if tag == "" {
+		return t.Meta
+	}
+	h := fnv.New32a()
+	_, _ = h.Write([]byte(tag))
+	c := t.tagPalette[int(h.Sum32())%len(t.tagPalette)]
+	return t.base.Foreground(c)
+}
+
+// adaptive picks a colour for dark vs light backgrounds.
+func adaptive(dark, light string) lipgloss.AdaptiveColor {
+	return lipgloss.AdaptiveColor{Dark: dark, Light: light}
+}
+
+// New returns the theme for the given name ("dark" or "light"). Both are built
+// from the same high-contrast palette; lipgloss adapts per background so a
+// single definition stays readable either way.
+func New(name string) Theme {
+	// High-contrast, deliberately bright accents for low-light legibility.
+	accent := adaptive("#7DD3FC", "#0369A1")  // sky — highlighted alias
+	accent2 := adaptive("#FDE047", "#A16207") // amber — numbers/stars
+	fg := adaptive("#F1F5F9", "#0F172A")      // primary text (near-white / near-black)
+	muted := adaptive("#CBD5E1", "#334155")   // secondary text — still clearly readable
+	faint := adaptive("#94A3B8", "#475569")   // hints; the dimmest we allow
+	tag := adaptive("#86EFAC", "#15803D")     // green tags
+	warn := adaptive("#FCA5A5", "#B91C1C")
+
+	base := lipgloss.NewStyle()
+
+	// Distinct, high-contrast hues for tag pills (dark / light variants).
+	tagPalette := []lipgloss.AdaptiveColor{
+		adaptive("#7DD3FC", "#0369A1"), // sky
+		adaptive("#86EFAC", "#15803D"), // green
+		adaptive("#FDBA74", "#C2410C"), // orange
+		adaptive("#F9A8D4", "#BE185D"), // pink
+		adaptive("#C4B5FD", "#6D28D9"), // violet
+		adaptive("#5EEAD4", "#0F766E"), // teal
+		adaptive("#FDE047", "#A16207"), // amber
+		adaptive("#FCA5A5", "#B91C1C"), // red
+	}
+
+	return Theme{
+		base:       base,
+		tagPalette: tagPalette,
+		Title:      base.Bold(true).Foreground(fg),
+		Meta:      base.Foreground(faint),
+		Number:    base.Foreground(faint),
+		NumberSel: base.Bold(true).Foreground(accent2),
+		Alias:     base.Foreground(fg),
+		AliasSel:  base.Bold(true).Foreground(accent),
+		Detail:    base.Foreground(muted),
+		DetailSel: base.Foreground(muted),
+		Tag:       base.Foreground(tag),
+		Star:      base.Foreground(accent2),
+		Cursor:    base.Bold(true).Foreground(accent),
+		Preview:   base.BorderStyle(lipgloss.RoundedBorder()).BorderForeground(faint).Padding(0, 2),
+		PreviewK:  base.Foreground(faint),
+		PreviewV:  base.Foreground(fg),
+		FilterBar: base.Bold(true).Foreground(accent2),
+		Help:      base.Foreground(faint),
+		Warn:      base.Bold(true).Foreground(warn),
+	}
+}