How to implement (FCM Rest APIs)

FCM Rest APIs

Steps:
1. make sure to save device token in database related to user (when register a new user).
2. make sure to update device token every time user logging in app.
3. implement code ...

fcm api documnetation link : https://firebase.flutter.dev/docs/messaging/notifications#via-rest

method type : POST

base url : https://fcm.googleapis.com
end point : /fcm/send

headers : {
    "Authorization" : "key=YOUR_SERVER_KEY",
    "Content-Type" : "application/json"
}

body : {
    "to" : "topics/TOPIC_NAME",
    or ----------
    "to": "TARGETED_DEVICE_TOKEN"
    "notification": {
        "title": "you have recieved a message from abdullah mansour",
        "body": "testing body from post man",
        "sound": "default"
    },
    "android": {
        "priority": "HIGH",
        "notification": {
            "notification_priority": "PRIORITY_MAX",
            "sound": "default",
            "default_sound": true,
            "default_vibrate_timings": true,
            "default_light_settings": true
        }
    },
    "data": {
        "type": "order",
        "id": "87",
        "click_action": "FLUTTER_NOTIFICATION_CLICK"
    }
}