Add list conversation option

cmd/conversation.go

@@ -0,0 +1,66 @@
+package cmd
+
+import (
+	"context"
+	hermes "github.com/f-ewald/hermes/pkg"
+	"github.com/spf13/cobra"
+	"log"
+)
+
+func init() {
+	rootCmd.AddCommand(conversationCmd)
+	conversationCmd.AddCommand(conversationListCmd)
+
+	// Here you will define your flags and configuration settings.
+
+	// Cobra supports Persistent Flags which will work for this command
+	// and all subcommands, e.g.:
+	// conversationCmd.PersistentFlags().String("foo", "", "A help for foo")
+
+	// Cobra supports local flags which will only run when this command
+	// is called directly, e.g.:
+	// conversationCmd.Flags().BoolP("toggle", "t", false, "Help message for toggle")
+}
+
+// conversationCmd represents the conversation command.
+var conversationCmd = &cobra.Command{
+	Use:   "conversation",
+	Short: "Show conversations, find participants",
+	//Long:  `TODO`,
+	//Run: func(cmd *cobra.Command, args []string) {
+	//	fmt.Println("conversation called")
+	//},
+}
+
+var conversationListCmd = &cobra.Command{
+	Use:   "list",
+	Short: "List all conversations",
+	Long:  "List all conversations with ",
+	Run: func(cmd *cobra.Command, args []string) {
+		messageDB, err := hermes.MessageDBFilename()
+		if err != nil {
+			log.Fatal(err)
+		}
+		db := hermes.NewDatabase(messageDB)
+		err = db.Connect()
+		if err != nil {
+			log.Fatal(err)
+		}
+		defer func() {
+			err = db.Close()
+			if err != nil {
+				log.Fatal(err)
+			}
+		}()
+
+		conversations, err := db.ListConversations(context.Background())
+		if err != nil {
+			log.Fatal(err)
+		}
+		var printer hermes.Printer
+		printer = &hermes.StdoutPrinter{}
+		for _, conversation := range conversations {
+			printer.Print([]byte(conversation))
+		}
+	},
+}

pkg/db.go

@@ -91,3 +91,23 @@ func (db *Database) Conversation(ctx context.Context) (conversation *Conversatio
 
 	return nil, nil
 }
+
+func (db *Database) ListConversations(ctx context.Context) (conversations []string, err error) {
+	rows, err := db.db.QueryContext(ctx, "SELECT guid FROM chat")
+	if err != nil {
+		return nil, err
+	}
+	defer func() {
+		_ = rows.Close()
+	}()
+	conversations = make([]string, 0)
+	for rows.Next() {
+		var guid string
+		err = rows.Scan(&guid)
+		if err != nil {
+			return nil, err
+		}
+		conversations = append(conversations, guid)
+	}
+	return conversations, nil
+}