macOS support + new themes + background transparency

README.md

@@ -7,6 +7,7 @@ A polished Go TUI with a startup menu, one-shot speed tests, a live bandwidth mo
 [![terminal](https://img.shields.io/badge/terminal-TUI-39d0d8?style=flat-square)](https://github.com/Foxemsx/riptide)
 [![Go](https://img.shields.io/badge/Go-1.23+-00ADD8?style=flat-square&logo=go&logoColor=white)](https://go.dev)
 [![Linux](https://img.shields.io/badge/Linux-supported-2ea44f?style=flat-square&logo=linux&logoColor=white)](https://github.com/Foxemsx/riptide)
+[![macOS](https://img.shields.io/badge/macOS-supported-A2AAAD?style=flat-square&logo=apple&logoColor=white)](https://github.com/Foxemsx/riptide)
 [![Windows](https://img.shields.io/badge/Windows-supported-0078D6?style=flat-square&logo=windows&logoColor=white)](https://github.com/Foxemsx/riptide)
 [![License](https://img.shields.io/badge/license-MIT-blue?style=flat-square)](LICENSE)
 
@@ -22,7 +23,7 @@ A polished Go TUI with a startup menu, one-shot speed tests, a live bandwidth mo
 |:---|:---|
 | **Speed Test** | One-shot download, upload, and ping. Parallel connections, peak rates, timed phases. Auto-saves runs; compare the latest 10. |
 | **Bandwidth Monitor** | Live view of *real* PC traffic (OS counters only — no test load). Peaks, uptime, pause. |
-| **Settings** | Searchable settings: 11 color themes, database reset, uninstall instructions. |
+| **Settings** | Searchable settings: 14 color themes, database reset, uninstall instructions. |
 
 ---
 
@@ -101,6 +102,24 @@ curl -fsSL https://raw.githubusercontent.com/Foxemsx/riptide/main/uninstall.sh |
 
 You can also open **Settings → Uninstall** inside the app for the same instructions.
 
+### macOS
+
+With Go 1.23+ installed:
+
+```sh
+go build -o /usr/local/bin/riptide github.com/Foxemsx/riptide/cmd/riptide@main
+riptide
+```
+
+Or from source (same as the [From source](#from-source-any-os-with-go-123) section below).
+
+> **Known issue — transparent terminals (Ghostty, iTerm2)**  
+> On macOS, some terminal emulators render ~30% of the background as
+> transparent due to a Go/Lipgloss interaction with ANSI reset codes.
+> The core features (speed test, bandwidth monitor, themes, history)
+> all work normally. Use **Settings → Terminal BG** (key `4`) to
+> toggle full transparency mode as a workaround.
+
 ### Windows
 
 The bash installer does **not** run on Windows. Pick one of:
@@ -184,6 +203,9 @@ riptide --theme ocean  # start with a palette (also saved as preference)
 | `cyber` | Neon green · hot magenta |
 | `ember` | Charcoal fire · molten gold |
 | `arctic` | Ice blue · clean slate |
+| `mono` | True black · arctic white |
+| `signal` | True black · rose red |
+| `ink` | True black · cold blue |
 
 Theme preference is stored in the local database (overridden by `--theme` for that launch).
 

internal/engine/monitor_darwin.go

@@ -0,0 +1,105 @@
+//go:build darwin
+
+package engine
+
+import (
+	"bytes"
+	"context"
+	"os/exec"
+	"strconv"
+	"strings"
+	"time"
+)
+
+func RunMonitor(ctx context.Context, p *Progress, sampleInterval time.Duration) {
+	p.ServerName = discoverAdaptersDarwin()
+	sendPhase(p, PhaseConnected)
+
+	prev := map[string]counters{}
+
+	ticker := time.NewTicker(sampleInterval)
+	defer ticker.Stop()
+
+	var last time.Time
+	for {
+		select {
+		case <-ctx.Done():
+			return
+		case t := <-ticker.C:
+			if last.IsZero() {
+				_, _ = readCountersDarwin(prev)
+				last = t
+				continue
+			}
+			elapsed := t.Sub(last).Seconds()
+			last = t
+			if elapsed <= 0 {
+				continue
+			}
+
+			total, names := readCountersDarwin(nil)
+			if len(names) > 0 {
+				p.ServerName = strings.Join(names, ", ")
+			}
+
+			var rx, tx uint64
+			for iface, c := range total {
+				base, ok := prev[iface]
+				if !ok {
+					prev[iface] = c
+					continue
+				}
+				rx += safeDelta(base.rx, c.rx)
+				tx += safeDelta(base.tx, c.tx)
+				prev[iface] = c
+			}
+
+			_ = sendSample(p, Sample{Phase: PhaseDownload, Rate: float64(rx) / elapsed, At: t})
+			_ = sendSample(p, Sample{Phase: PhaseUpload, Rate: float64(tx) / elapsed, At: t})
+		}
+	}
+}
+
+func readCountersDarwin(seen map[string]counters) (map[string]counters, []string) {
+	total := map[string]counters{}
+	var names []string
+
+	out, err := exec.Command("netstat", "-ib", "-n").Output()
+	if err != nil {
+		return total, names
+	}
+
+	for _, line := range bytes.Split(out, []byte("\n")) {
+		s := string(bytes.TrimSpace(line))
+		if s == "" || !strings.Contains(s, "<Link#") {
+			continue
+		}
+		fields := strings.Fields(s)
+		if len(fields) < 10 {
+			continue
+		}
+		iface := fields[0]
+		if iface == "lo0" || strings.HasSuffix(iface, "*") {
+			continue
+		}
+
+		ibytes, _ := strconv.ParseUint(fields[5], 10, 64)
+		obytes, _ := strconv.ParseUint(fields[8], 10, 64)
+
+		c := counters{rx: ibytes, tx: obytes}
+		total[iface] = c
+		if seen != nil {
+			seen[iface] = c
+		}
+		names = append(names, iface)
+	}
+	return total, names
+}
+
+func discoverAdaptersDarwin() string {
+	_, names := readCountersDarwin(nil)
+	if len(names) == 0 {
+		return "no active interfaces"
+	}
+	return strings.Join(names, ", ")
+}