Update packages (#16)

Reviewed-on: #16
Co-authored-by: phoenix <kundeng00@pm.me>
Co-committed-by: phoenix <kundeng00@pm.me>

internal/util/util.go

@@ -0,0 +1,57 @@
+package util
+
+import (
+	"encoding/json"
+	"log"
+	"os"
+
+	"git.kundeng.us/phoenix/textsender-models/tx0/contact"
+	"git.kundeng.us/phoenix/textsender-models/tx0/message"
+)
+
+func GetPaths(args []string) (configPath string, numberPath string, messagePath string) {
+	configPath = args[1]
+	numberPath = args[2]
+	messagePath = args[3]
+
+	return
+}
+
+func ParseNumbers(filepath string) (numbers [](contact.Contact), err error) {
+	var nmbrs []contact.Contact
+
+	content, err := os.ReadFile(filepath)
+
+	if err != nil {
+		log.Println("An error occurred")
+		return numbers, err
+	} else {
+		if err = json.Unmarshal(content, &nmbrs); err != nil {
+			log.Println("An error occurred:", err)
+			return numbers, err
+		} else {
+			return nmbrs, nil
+		}
+	}
+
+}
+
+func ParseMessage(filepath string) (*message.Message, error) {
+	var msg message.Message
+
+	content, err := os.ReadFile(filepath)
+
+	if err != nil {
+		log.Println("An error occurred")
+		return nil, err
+	}
+
+	err = json.Unmarshal(content, &msg)
+
+	if err != nil {
+		log.Println("An error occurred")
+		return nil, err
+	}
+
+	return &msg, nil
+}