Interactive mode

README.md

@@ -16,6 +16,7 @@ The tool supports four main modes: calculate from **now**, from a target **wake*
 
 ## Features
 
+- Interactive TUI mode when run without flags
 - Calculate wake times from the current time
 - Calculate bedtimes for a target wake time
 - Calculate wake times for a target sleep time
@@ -52,7 +53,21 @@ go build -o sleepycli .
 go run . --help
 ```
 
-## Usage
+## Interactive mode
+
+Run `sleepycli` without any flags to launch the interactive TUI:
+
+```bash
+sleepycli
+```
+
+- Navigate with `↑` / `↓`
+- Press `enter` on a mode to select it and type your time
+- Adjust settings (buffer, cycle range) from the settings section
+- Press `enter` to confirm — the result is printed to your terminal
+- Press `q` to quit without output
+
+## CLI flags
 
 ```bash
 sleepycli [mode] [options]
@@ -109,27 +124,27 @@ sleepycli --sleep 23:00 --cycles-min 3 --cycles-max 7
 #### `--wake 07:00`
 
 ```text
-To wake up at 07:00:
-───────────────────
+To wake up at 07:00
+──────────────────────────────
 Assuming 15 min to fall asleep
 
-  - 6 cycles, go to sleep at 21:45 (9h 00m)
-  - 5 cycles, go to sleep at 23:15 (7h 30m)
-  - 4 cycles, go to sleep at 00:45 (6h 00m)
+  6 cycles  →  sleep at 21:45  (9h 00m)
+  5 cycles  →  sleep at 23:15  (7h 30m)
+  4 cycles  →  sleep at 00:45  (6h 00m)
 ```
 
 #### `--from 22:00 --to 07:00`
 
 ```text
-Between 22:00 and 07:00:
-───────────────────────
+Between 22:00 and 07:00
+──────────────────────────────
 Assuming 15 min to fall asleep
 
-  - 5 complete cycles (7h 30m)
-  - 75 minutes remaining
+  5 complete cycles  (7h 30m)
+  75 minutes remaining
 ```
 
-## Flags
+## Flag reference
 
 | Flag | Description | Default |
 |---|---|---:|

go.mod

@@ -2,4 +2,32 @@ module github.com/TyostoKarry/sleepycli
 
 go 1.26.1
 
-require github.com/spf13/pflag v1.0.10
+require (
+	charm.land/bubbletea/v2 v2.0.2
+	github.com/charmbracelet/lipgloss v1.1.0
+	github.com/spf13/pflag v1.0.10
+)
+
+require (
+	github.com/aymanbagabas/go-osc52/v2 v2.0.1 // indirect
+	github.com/aymanbagabas/go-udiff v0.3.1 // indirect
+	github.com/charmbracelet/colorprofile v0.4.1 // indirect
+	github.com/charmbracelet/ultraviolet v0.0.0-20260205113103-524a6607adb8 // indirect
+	github.com/charmbracelet/x/ansi v0.11.6 // indirect
+	github.com/charmbracelet/x/cellbuf v0.0.15 // indirect
+	github.com/charmbracelet/x/term v0.2.2 // indirect
+	github.com/charmbracelet/x/termios v0.1.1 // indirect
+	github.com/charmbracelet/x/windows v0.2.2 // indirect
+	github.com/clipperhouse/displaywidth v0.9.0 // indirect
+	github.com/clipperhouse/stringish v0.1.1 // indirect
+	github.com/clipperhouse/uax29/v2 v2.5.0 // indirect
+	github.com/lucasb-eyer/go-colorful v1.3.0 // indirect
+	github.com/mattn/go-isatty v0.0.20 // indirect
+	github.com/mattn/go-runewidth v0.0.19 // indirect
+	github.com/muesli/cancelreader v0.2.2 // indirect
+	github.com/muesli/termenv v0.16.0 // indirect
+	github.com/rivo/uniseg v0.4.7 // indirect
+	github.com/xo/terminfo v0.0.0-20220910002029-abceb7e1c41e // indirect
+	golang.org/x/sync v0.19.0 // indirect
+	golang.org/x/sys v0.40.0 // indirect
+)

go.sum

@@ -1,2 +1,53 @@
+charm.land/bubbletea/v2 v2.0.2 h1:4CRtRnuZOdFDTWSff9r8QFt/9+z6Emubz3aDMnf/dx0=
+charm.land/bubbletea/v2 v2.0.2/go.mod h1:3LRff2U4WIYXy7MTxfbAQ+AdfM3D8Xuvz2wbsOD9OHQ=
+github.com/aymanbagabas/go-osc52/v2 v2.0.1 h1:HwpRHbFMcZLEVr42D4p7XBqjyuxQH5SMiErDT4WkJ2k=
+github.com/aymanbagabas/go-osc52/v2 v2.0.1/go.mod h1:uYgXzlJ7ZpABp8OJ+exZzJJhRNQ2ASbcXHWsFqH8hp8=
+github.com/aymanbagabas/go-udiff v0.3.1 h1:LV+qyBQ2pqe0u42ZsUEtPiCaUoqgA9gYRDs3vj1nolY=
+github.com/aymanbagabas/go-udiff v0.3.1/go.mod h1:G0fsKmG+P6ylD0r6N/KgQD/nWzgfnl8ZBcNLgcbrw8E=
+github.com/charmbracelet/colorprofile v0.4.1 h1:a1lO03qTrSIRaK8c3JRxJDZOvhvIeSco3ej+ngLk1kk=
+github.com/charmbracelet/colorprofile v0.4.1/go.mod h1:U1d9Dljmdf9DLegaJ0nGZNJvoXAhayhmidOdcBwAvKk=
+github.com/charmbracelet/lipgloss v1.1.0 h1:vYXsiLHVkK7fp74RkV7b2kq9+zDLoEU4MZoFqR/noCY=
+github.com/charmbracelet/lipgloss v1.1.0/go.mod h1:/6Q8FR2o+kj8rz4Dq0zQc3vYf7X+B0binUUBwA0aL30=
+github.com/charmbracelet/ultraviolet v0.0.0-20260205113103-524a6607adb8 h1:eyFRbAmexyt43hVfeyBofiGSEmJ7krjLOYt/9CF5NKA=
+github.com/charmbracelet/ultraviolet v0.0.0-20260205113103-524a6607adb8/go.mod h1:SQpCTRNBtzJkwku5ye4S3HEuthAlGy2n9VXZnWkEW98=
+github.com/charmbracelet/x/ansi v0.11.6 h1:GhV21SiDz/45W9AnV2R61xZMRri5NlLnl6CVF7ihZW8=
+github.com/charmbracelet/x/ansi v0.11.6/go.mod h1:2JNYLgQUsyqaiLovhU2Rv/pb8r6ydXKS3NIttu3VGZQ=
+github.com/charmbracelet/x/cellbuf v0.0.15 h1:ur3pZy0o6z/R7EylET877CBxaiE1Sp1GMxoFPAIztPI=
+github.com/charmbracelet/x/cellbuf v0.0.15/go.mod h1:J1YVbR7MUuEGIFPCaaZ96KDl5NoS0DAWkskup+mOY+Q=
+github.com/charmbracelet/x/exp/golden v0.0.0-20241212170349-ad4b7ae0f25f h1:UytXHv0UxnsDFmL/7Z9Q5SBYPwSuRLXHbwx+6LycZ2w=
+github.com/charmbracelet/x/exp/golden v0.0.0-20241212170349-ad4b7ae0f25f/go.mod h1:wDlXFlCrmJ8J+swcL/MnGUuYnqgQdW9rhSD61oNMb6U=
+github.com/charmbracelet/x/term v0.2.2 h1:xVRT/S2ZcKdhhOuSP4t5cLi5o+JxklsoEObBSgfgZRk=
+github.com/charmbracelet/x/term v0.2.2/go.mod h1:kF8CY5RddLWrsgVwpw4kAa6TESp6EB5y3uxGLeCqzAI=
+github.com/charmbracelet/x/termios v0.1.1 h1:o3Q2bT8eqzGnGPOYheoYS8eEleT5ZVNYNy8JawjaNZY=
+github.com/charmbracelet/x/termios v0.1.1/go.mod h1:rB7fnv1TgOPOyyKRJ9o+AsTU/vK5WHJ2ivHeut/Pcwo=
+github.com/charmbracelet/x/windows v0.2.2 h1:IofanmuvaxnKHuV04sC0eBy/smG6kIKrWG2/jYn2GuM=
+github.com/charmbracelet/x/windows v0.2.2/go.mod h1:/8XtdKZzedat74NQFn0NGlGL4soHB0YQZrETF96h75k=
+github.com/clipperhouse/displaywidth v0.9.0 h1:Qb4KOhYwRiN3viMv1v/3cTBlz3AcAZX3+y9OLhMtAtA=
+github.com/clipperhouse/displaywidth v0.9.0/go.mod h1:aCAAqTlh4GIVkhQnJpbL0T/WfcrJXHcj8C0yjYcjOZA=
+github.com/clipperhouse/stringish v0.1.1 h1:+NSqMOr3GR6k1FdRhhnXrLfztGzuG+VuFDfatpWHKCs=
+github.com/clipperhouse/stringish v0.1.1/go.mod h1:v/WhFtE1q0ovMta2+m+UbpZ+2/HEXNWYXQgCt4hdOzA=
+github.com/clipperhouse/uax29/v2 v2.5.0 h1:x7T0T4eTHDONxFJsL94uKNKPHrclyFI0lm7+w94cO8U=
+github.com/clipperhouse/uax29/v2 v2.5.0/go.mod h1:Wn1g7MK6OoeDT0vL+Q0SQLDz/KpfsVRgg6W7ihQeh4g=
+github.com/lucasb-eyer/go-colorful v1.3.0 h1:2/yBRLdWBZKrf7gB40FoiKfAWYQ0lqNcbuQwVHXptag=
+github.com/lucasb-eyer/go-colorful v1.3.0/go.mod h1:R4dSotOR9KMtayYi1e77YzuveK+i7ruzyGqttikkLy0=
+github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWEY=
+github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
+github.com/mattn/go-runewidth v0.0.19 h1:v++JhqYnZuu5jSKrk9RbgF5v4CGUjqRfBm05byFGLdw=
+github.com/mattn/go-runewidth v0.0.19/go.mod h1:XBkDxAl56ILZc9knddidhrOlY5R/pDhgLpndooCuJAs=
+github.com/muesli/cancelreader v0.2.2 h1:3I4Kt4BQjOR54NavqnDogx/MIoWBFa0StPA8ELUXHmA=
+github.com/muesli/cancelreader v0.2.2/go.mod h1:3XuTXfFS2VjM+HTLZY9Ak0l6eUKfijIfMUZ4EgX0QYo=
+github.com/muesli/termenv v0.16.0 h1:S5AlUN9dENB57rsbnkPyfdGuWIlkmzJjbFf0Tf5FWUc=
+github.com/muesli/termenv v0.16.0/go.mod h1:ZRfOIKPFDYQoDFF4Olj7/QJbW60Ol/kL1pU3VfY/Cnk=
+github.com/rivo/uniseg v0.4.7 h1:WUdvkW8uEhrYfLC4ZzdpI2ztxP1I582+49Oc5Mq64VQ=
+github.com/rivo/uniseg v0.4.7/go.mod h1:FN3SvrM+Zdj16jyLfmOkMNblXMcoc8DfTHruCPUcx88=
 github.com/spf13/pflag v1.0.10 h1:4EBh2KAYBwaONj6b2Ye1GiHfwjqyROoF4RwYO+vPwFk=
 github.com/spf13/pflag v1.0.10/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
+github.com/xo/terminfo v0.0.0-20220910002029-abceb7e1c41e h1:JVG44RsyaB9T2KIHavMF/ppJZNG9ZpyihvCd0w101no=
+github.com/xo/terminfo v0.0.0-20220910002029-abceb7e1c41e/go.mod h1:RbqR21r5mrJuqunuUZ/Dhy/avygyECGrLceyNeo4LiM=
+golang.org/x/exp v0.0.0-20231006140011-7918f672742d h1:jtJma62tbqLibJ5sFQz8bKtEM8rJBtfilJ2qTU199MI=
+golang.org/x/exp v0.0.0-20231006140011-7918f672742d/go.mod h1:ldy0pHrwJyGW56pPQzzkH36rKxoZW1tw7ZJpeKx+hdo=
+golang.org/x/sync v0.19.0 h1:vV+1eWNmZ5geRlYjzm2adRgW2/mcpevXNg50YZtPCE4=
+golang.org/x/sync v0.19.0/go.mod h1:9KTHXmSnoGruLpwFjVSX0lNNA75CykiMECbovNTZqGI=
+golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.40.0 h1:DBZZqJ2Rkml6QMQsZywtnjnnGvHza6BTfYFWY9kjEWQ=
+golang.org/x/sys v0.40.0/go.mod h1:OgkHotnGiDImocRcuBABYBEXf8A9a87e/uXjp9XT3ks=

internal/help/help.go

@@ -32,6 +32,7 @@ func writeHelp(w io.Writer, name string) error {
 
 	fmt.Fprintf(&b, "%s — sleep cycle calculator\n\n", name)
 	b.WriteString("Usage:\n")
+	fmt.Fprintf(&b, "  %s                    Launch interactive mode\n", name)
 	fmt.Fprintf(&b, "  %s [mode] [options]\n\n", name)
 
 	b.WriteString("Choose exactly one mode:\n")

internal/render/render.go

@@ -0,0 +1,64 @@
+package render
+
+import (
+	"fmt"
+	"strings"
+	"time"
+
+	"github.com/TyostoKarry/sleepycli/internal/cycle"
+	"github.com/TyostoKarry/sleepycli/internal/styles"
+)
+
+func FormatDuration(cycleCount int) string {
+	duration := time.Duration(cycleCount) * cycle.CycleDuration
+	hours := int(duration.Hours())
+	minutes := int(duration.Minutes()) % 60
+	return fmt.Sprintf("%dh %02dm", hours, minutes)
+}
+
+func WakeTimes(base time.Time, buffer time.Duration, minCycles, maxCycles int, header string) string {
+	wakeTimes := cycle.CalculateWakeTimes(base, buffer, minCycles, maxCycles)
+	var sb strings.Builder
+	sb.WriteString(styles.Result.Render(header) + "\n")
+	sb.WriteString(styles.Separator.Render(strings.Repeat("─", 30)) + "\n")
+	sb.WriteString(styles.Dim.Render(fmt.Sprintf("Assuming %d min to fall asleep", int(buffer.Minutes()))) + "\n\n")
+	for i := len(wakeTimes) - 1; i >= 0; i-- {
+		c := minCycles + i
+		fmt.Fprintf(&sb, "  %s cycles  →  wake at %s  %s\n",
+			styles.Result.Render(fmt.Sprintf("%d", c)),
+			styles.Result.Render(wakeTimes[i].Format("15:04")),
+			styles.Dim.Render("("+FormatDuration(c)+")"))
+	}
+	return sb.String()
+}
+
+func Bedtimes(base time.Time, buffer time.Duration, minCycles, maxCycles int, header string) string {
+	bedTimes := cycle.CalculateBedtimes(base, buffer, minCycles, maxCycles)
+	var sb strings.Builder
+	sb.WriteString(styles.Result.Render(header) + "\n")
+	sb.WriteString(styles.Separator.Render(strings.Repeat("─", 30)) + "\n")
+	sb.WriteString(styles.Dim.Render(fmt.Sprintf("Assuming %d min to fall asleep", int(buffer.Minutes()))) + "\n\n")
+	for i := len(bedTimes) - 1; i >= 0; i-- {
+		c := minCycles + i
+		fmt.Fprintf(&sb, "  %s cycles  →  sleep at %s  %s\n",
+			styles.Result.Render(fmt.Sprintf("%d", c)),
+			styles.Result.Render(bedTimes[i].Format("15:04")),
+			styles.Dim.Render("("+FormatDuration(c)+")"))
+	}
+	return sb.String()
+}
+
+func Window(from, to string, fromTime, toTime time.Time, bufferMinutes int) string {
+	buffer := time.Duration(bufferMinutes) * time.Minute
+	cycles, remainder := cycle.CalculateCyclesInWindow(fromTime, toTime, buffer)
+	var sb strings.Builder
+	sb.WriteString(styles.Result.Render(fmt.Sprintf("Between %s and %s", from, to)) + "\n")
+	sb.WriteString(styles.Separator.Render(strings.Repeat("─", 30)) + "\n")
+	sb.WriteString(styles.Dim.Render(fmt.Sprintf("Assuming %d min to fall asleep", bufferMinutes)) + "\n\n")
+	fmt.Fprintf(&sb, "  %s complete cycles  %s\n",
+		styles.Result.Render(fmt.Sprintf("%d", cycles)),
+		styles.Dim.Render("("+FormatDuration(cycles)+")"))
+	fmt.Fprintf(&sb, "  %s minutes remaining\n",
+		styles.Result.Render(fmt.Sprintf("%d", int(remainder.Minutes()))))
+	return sb.String()
+}

internal/styles/styles.go

@@ -0,0 +1,10 @@
+package styles
+
+import "github.com/charmbracelet/lipgloss"
+
+var (
+	Result    = lipgloss.NewStyle().Foreground(lipgloss.Color("120"))
+	Dim       = lipgloss.NewStyle().Foreground(lipgloss.Color("240"))
+	Separator = lipgloss.NewStyle().Foreground(lipgloss.Color("240"))
+	Error     = lipgloss.NewStyle().Foreground(lipgloss.Color("196"))
+)