get download url from multiple file upload firebase storage - angularjs

Question

I am new in firebase and angularjs and i am having difficulties in getting download url from firebase storage and store them in firebase realtime database.
I was able to upload multiple files to firebase storage. the problem is when i store the download url into firebase realtime database, all database url value are same.It should different based each files downloadURL.
Here my script:
$scope.submitPhotos = function(file){
console.log(file);
var updateAlbum = [];
for (var i = 0; i < file.length; i++) {
var storageRef=firebase.storage().ref(albumtitle).child(file[i].name);
var task=storageRef.put(file[i]);
task.on('state_changed', function progress(snapshot){
var percentage=( snapshot.bytesTransferred / snapshot.totalBytes )*100;
if (percentage==100){
storageRef.getDownloadURL().then(function(url) {
var galleryRef = firebase.database().ref('gallery/'+albumkey);
var postkey = firebase.database().ref('gallery/'+albumkey).push().key;
updateAlbum={img:url};
firebase.database().ref('gallery/'+ albumkey+'/'+postkey).update(updateAlbum);
});
};
})
};
};
As you can see i was able store the url into database but all of the urls are same. What i need is every key store each different links from storage.
Any helps appreciated. Thanks

Answer 1

function uploadImg(file,i) {
return new Promise((resolve,reject)=>{
var storageRef=firebase.storage().ref("store-images/"+file[i].file.name);
task = storageRef.put(file[i].file);
task.on('state_changed', function progress(snapshot){
var percentage=( snapshot.bytesTransferred / snapshot.totalBytes )*100;
console.log(percentage);
// use the percentage as you wish, to show progress of an upload for example
}, // use the function below for error handling
function (error) {
console.log(error);
},
function complete () //This function executes after a successful upload
{
task.snapshot.ref.getDownloadURL().then(function(downloadURL) {
resolve(downloadURL)
});
});
})
}
async function putImage(file) {
for (var i = 0; i < file.length; i++) {
var dd = await uploadImg(file,i);
firebase.database().ref().child('gallery').push(dd);
}
}

Answer 2

Try using the code below:
$scope.submitPhotos = function(file){
console.log(file);
var updateAlbum = [];
for (var i = 0; i < file.length; i++) {
var storageRef=firebase.storage().ref(albumtitle).child(file[i].name);
var task=storageRef.put(file[i]);
task.on('state_changed', function progress(snapshot)
{
var percentage=( snapshot.bytesTransferred / snapshot.totalBytes )*100;
// use the percentage as you wish, to show progress of an upload for example
}, // use the function below for error handling
function (error) {
switch (error.code) {
case 'storage/unauthorized':
// User doesn't have permission to access the object
break;
case 'storage/canceled':
// User canceled the upload
break;
case 'storage/unknown':
// Unknown error occurred, inspect error.serverResponse
break;
}
}, function complete () //This function executes after a successful upload
{
let dwnURL = task.snapshot.downloadURL;
let galleryRef = firebase.database().ref('gallery/'+albumkey);
let postkey = firebase.database().ref('gallery/'+albumkey).push().key;
updateAlbum={img:dwnURL};
firebase.database().ref('gallery/'+ albumkey+'/'+postkey).update(updateAlbum);
});
};
};
All the best!