Im trying to loop over JSON data which ive written, as a kind of json database system. Although it does write and read. I can’t seem to access the data it has readed properly

Ive been trying to swap from initaly returning a Message struct to now using a map[string]interface{} since someone on antoher post reccomended that, but its not working.

`package main

import (
    "encoding/json"
    "log"
    "os"
)

type Message struct {
    Name string
    Body string
    Time int64
}

func main() {
    foo := Message{"foo", "bar", 1}
    writeToFile(foo)
    bar := readFromFile()

    log.Println(bar)
}

func writeToFile(message Message) {
    data, err := json.Marshal(message)
    if err != nil {
        log.Fatal(err)
    }

    file, err := os.OpenFile("message.json", os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644)
    if err != nil {
        log.Fatal(err)
    }
    defer file.Close()

    _, err = file.Write(data)
    if err != nil {
        log.Fatal(err)
    }

    log.Println("Message written successfully")
}

func readFromFile() Message {
    file, err := os.OpenFile("message.json", os.O_RDWR, 0644)
    if err != nil {
        log.Fatal(err)
    }
    defer file.Close()

    data, err := os.ReadFile("message.json")
    if err != nil {
        log.Fatal(err)
    }

    var message Message 
    json.Unmarshal(data, &message)
    return message
}`