Allow picking GPG key ID from a generated list

src/cli/init.go

@@ -2,16 +2,15 @@ package cli
 
 import (
 	"github.com/rwinkhart/MUTN/src/offline"
-	"os"
-	"os/exec"
 )
 
 func TempInitCli() {
 	// gpgID
-	cmd := exec.Command("gpg", "-k")
-	cmd.Stdout = os.Stdout
-	cmd.Run()
-	gpgID := input("GPG key ID:")
+	//generateGPG := inputBinary("Auto-generate GPG key?")
+
+	uidSlice := offline.GpgUIDListGen()
+	gpgIDInt := inputMenuGen("Select GPG key:", uidSlice)
+	gpgID := uidSlice[gpgIDInt-1]
 
 	// textEditor
 	textEditor := input("Text editor (leave blank for $EDITOR, falls back to \"vi\"):")

src/cli/utilitiesMisc.go

@@ -34,14 +34,14 @@ func inputHidden(prompt string) string {
 	return password
 }
 
-// inputInt prompts the user for input and returns the input as an integer
+// inputInt prompts the user for input and returns the input as an integer (0 is not a valid input)
 func inputInt(prompt string) int {
 	// loop until a valid integer is entered
 	for {
 		fmt.Print("\n" + prompt + " ")
 		var userInput int
 		_, err := fmt.Scanln(&userInput)
-		if err == nil {
+		if err == nil && userInput > 0 {
 			return userInput
 		}
 	}
@@ -58,6 +58,14 @@ func inputBinary(prompt string) bool {
 	return false
 }
 
+// inputMenu prompts the user with a menu and returns the user's choice as an integer
+func inputMenuGen(prompt string, options []string) int {
+	for i, option := range options {
+		fmt.Printf("%d. %s\n", i+1, option)
+	}
+	return inputInt(prompt)
+}
+
 // writeEntryShortcut writes an entry to targetLocation (trimming trailing blank lines) and previews it, or errors if no data is supplied
 func writeEntryShortcut(targetLocation string, unencryptedEntry []string, hidePassword bool) {
 	if offline.EntryIsNotEmpty(unencryptedEntry) {

src/offline/init.go

@@ -3,6 +3,8 @@ package offline
 import (
 	"fmt"
 	"os"
+	"os/exec"
+	"strings"
 )
 
 func TempInit(configFileMap map[string]string) {
@@ -37,3 +39,18 @@ func TempInit(configFileMap map[string]string) {
 
 	os.Exit(0)
 }
+
+// GpgUIDListGen generates a list of all GPG key IDs on the system and returns them as a slice of strings
+func GpgUIDListGen() []string {
+	cmd := exec.Command("gpg", "-k", "--with-colons")
+	gpgOutputBytes, _ := cmd.Output()
+	gpgOutputLines := strings.Split(string(gpgOutputBytes), "\n")
+	var uidSlice []string
+	for _, line := range gpgOutputLines {
+		if strings.HasPrefix(line, "uid") {
+			uid := strings.Split(line, ":")[9]
+			uidSlice = append(uidSlice, uid)
+		}
+	}
+	return uidSlice
+}