display config and help

Makefile

@@ -0,0 +1,2 @@
+README.md: cmd/til/main.go
+	go run build/usage/main.go

README.md

@@ -4,9 +4,11 @@ TIL-Prompt is an interactive terminal prompt for creating and managing a collect
 
 
 # Installation
-To install from source using golang 1.16
+To install from source using golang 2.16
 
-`go install github.com/roryq/til-prompt/cmd/til@v0.1.0`
+```
+go install github.com/roryq/til-prompt/cmd/til@vlatest
+```
 
 # Usage
 
@@ -15,5 +17,19 @@ To install from source using golang 1.16
 Follow the prompts to save a new TIL entry.
 A README.md is regenerated after each save.
 
+```shell
+Usage: til <command>
+
+Flags:
+  -h, --help    Show context-sensitive help.
+
+Commands:
+  config
+    Displays the current configuration.
+
+Run "til <command> --help" for more information on a command.
+
+```
+
 # License
 [MIT](LICENSE)

build/usage/main.go

@@ -0,0 +1,28 @@
+package main
+
+import (
+	"fmt"
+	"io/ioutil"
+	"os/exec"
+	"regexp"
+	"strings"
+)
+
+func main() {
+	helpOutput, err := exec.Command("go", "run", "cmd/til/main.go", "--help").Output()
+	if err != nil {
+		panic(err)
+	}
+
+	readme, err := ioutil.ReadFile("README.md")
+	if err != nil {
+		panic(err)
+	}
+
+	re := regexp.MustCompile("```shell\\n[^`]+```")
+	matches := re.FindStringSubmatch(string(readme))
+	replaced := strings.ReplaceAll(string(readme), matches[0],
+		fmt.Sprintf("```shell\n%s\n```", helpOutput))
+
+	ioutil.WriteFile("README.md", []byte(replaced), 0644)
+}

cmd/til/main.go

@@ -7,9 +7,9 @@ import (
 	"fmt"
 	"os"
 
-	gap "github.com/muesli/go-app-paths"
-
+	"github.com/alecthomas/kong"
 	tea "github.com/charmbracelet/bubbletea"
+	gap "github.com/muesli/go-app-paths"
 
 	"github.com/roryq/til-prompt/pkg/tui"
 )
@@ -18,15 +18,25 @@ var (
 	scope = gap.NewScope(gap.User, "til")
 )
 
+var CLI struct {
+	Config struct{} `cmd:"config" help:"Displays the current configuration."`
+}
+
 func main() {
 	config, err := tui.LoadConfig(scope)
 	if err != nil {
 		fmt.Printf("could not load config: %s\n", err)
 		os.Exit(1)
 	}
 
-	if err := tea.NewProgram(tui.NewUI(config)).Start(); err != nil {
-		fmt.Printf("could not start program: %s\n", err)
-		os.Exit(1)
+	ktx := kong.Parse(&CLI, kong.Name("til"))
+	switch ktx.Command() {
+	case "config":
+		fmt.Println(config.Sprint())
+	default:
+		if err := tea.NewProgram(tui.NewUI(config)).Start(); err != nil {
+			fmt.Printf("could not start program: %s\n", err)
+			os.Exit(1)
+		}
 	}
 }

go.mod

@@ -3,6 +3,7 @@ module github.com/roryq/til-prompt
 go 1.16
 
 require (
+	github.com/alecthomas/kong v0.2.17
 	github.com/charmbracelet/bubbles v0.8.0
 	github.com/charmbracelet/bubbletea v0.14.0
 	github.com/charmbracelet/lipgloss v0.2.1

go.sum

@@ -1,3 +1,5 @@
+github.com/alecthomas/kong v0.2.17 h1:URDISCI96MIgcIlQyoCAlhOmrSw6pZScBNkctg8r0W0=
+github.com/alecthomas/kong v0.2.17/go.mod h1:ka3VZ8GZNPXv9Ov+j4YNLkI8mTuhXyr/0ktSlqIydQQ=
 github.com/atotto/clipboard v0.1.2 h1:YZCtFu5Ie8qX2VmVTBnrqLSiU9XOWwqNRmdT3gIQzbY=
 github.com/atotto/clipboard v0.1.2/go.mod h1:ZY9tmq7sm5xIbd9bOK4onWV4S6X0u6GY7Vn0Yu86PYI=
 github.com/charmbracelet/bubbles v0.8.0 h1:+l2op90Ag37Vn+30O1hbg/0wBl+e+sxHhgY1F/rvdHs=
@@ -10,8 +12,9 @@ github.com/charmbracelet/lipgloss v0.2.1 h1:knjqLRtlcDsxss6i0CUhNLuXrNW3TQhFDXlX
 github.com/charmbracelet/lipgloss v0.2.1/go.mod h1:uiZUfrHLQN14I0lJ5591WtcHyY1X76pOIPSaRKPY6dE=
 github.com/containerd/console v1.0.1 h1:u7SFAJyRqWcG6ogaMAx3KjSTy1e3hT9QxqX7Jco7dRc=
 github.com/containerd/console v1.0.1/go.mod h1:XUsP6YE/mKtz6bxc+I8UiKKTP04qjQL4qcS3XoQ5xkw=
-github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/google/goterm v0.0.0-20190703233501-fc88cf888a3f/go.mod h1:nOFQdrUlIlx6M6ODdSpBj1NVA+VgLC6kmw60mkw34H4=
 github.com/kennygrant/sanitize v1.2.4 h1:gN25/otpP5vAsO2djbMhF/LQX6R7+O1TB4yv8NzpJ3o=
 github.com/kennygrant/sanitize v1.2.4/go.mod h1:LGsjYYtgxbetdg5owWB2mpgUL6e2nfw2eObZ0u0qvak=
@@ -63,5 +66,6 @@ gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
 gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
-gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b h1:h8qDotaEPuJATrMmW04NCwg7v22aHH28wwpauUhK9Oo=
+gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

pkg/tui/config.go

@@ -6,6 +6,9 @@ import (
 	"io/ioutil"
 	"os"
 	"path/filepath"
+	"strings"
+
+	"github.com/charmbracelet/lipgloss"
 
 	"gopkg.in/yaml.v2"
 
@@ -54,6 +57,16 @@ func LoadConfig(scope *gap.Scope) (config Config, err error) {
 	return config, err
 }
 
+func (c Config) Sprint() string {
+	b := &strings.Builder{}
+	headStyle := lipgloss.NewStyle().Foreground(lipgloss.Color("#04B575"))
+	bodyStyle := lipgloss.NewStyle().Foreground(lipgloss.Color("244"))
+
+	b.WriteString(headStyle.Render("SaveDirectory: "))
+	b.WriteString(bodyStyle.Render(c.SaveDirectory))
+	return b.String()
+}
+
 func getDataPath(defaultPath string) string {
 	reader := bufio.NewScanner(os.Stdin)
 	fmt.Printf("No config found. Set the directory to store your til,"+