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namespace("kivi.ImageUpload", function(ns) {
"use strict";

const MAXSIZE = 5*1024*1024; // 5MB size limit

ns.add_files = function(target) {
let files = [];
for (var i = 0; i < target.files.length; i++) {
files.push(target.files.item(i));
}

kivi.FileDB.store_image(files[0], files[0].name, () => {
ns.reload_images();
target.value = null;
});
};

ns.reload_images = function() {
kivi.FileDB.retrieve_all((data) => {
$('#stored-images').empty();
data.forEach(ns.create_thumb_row);
});
};

ns.create_thumb_row = function(file) {
let URL = window.URL || window.webkitURL;
let file_url = URL.createObjectURL(file);

let $row = $("<div>").addClass("row image-upload-row");
let $button = $("<a>")
.addClass("btn-floating btn-large waves-effect waves-light red")
.click((event) => ns.remove_image(event, file.name))
.append($("<i>delete</i>").addClass("material-icons"));
$row.append($("<div>").addClass("col s3").append($button));

let $image = $('<img>').attr("src", file_url).addClass("materialboxed responsive-img");
$row.append($("<div>").addClass("col s9").append($image));

$("#stored-images").append($row);
};

ns.remove_image = function(event, key) {
let $row = $(event.target).closest(".image-upload-row");
kivi.FileDB.delete_key(key, () => {
$row.remove();
});
};

ns.upload_files = function() {
let id = $('#object_id').val();
let type = $('#object_type').val();

ns.upload_selected_files(id, type, MAXSIZE);
};

ns.upload_selected_files = function(id, type, maxsize) {
$("#upload_modal").modal("open");

kivi.FileDB.retrieve_all((myfiles) => {
let filesize = 0;
myfiles.forEach(file => {
filesize += file.size;
if (filesize > maxsize) {
$("#upload_result").html(kivi.t8("filesize too big: ") + filesize+ kivi.t8(" bytes, max=") + maxsize );
return;
}

let data = new FormData();
data.append("uploadfiles[]", file);
data.append("action", "File/ajax_files_uploaded");
data.append("json", "1");
data.append("object_type", type);
data.append("object_id", id);
data.append("file_type", "attachment");

$("#upload_result").html(kivi.t8("start upload"));

let xhr = new XMLHttpRequest;
xhr.open('POST', 'controller.pl', true);
xhr.success = ns.attSuccess;
xhr.progress = ns.attProgress;
xhr.error = ns.attFailed;
xhr.abort = ns.attCanceled;
xhr.send(data);
});
});
};

ns.attProgress = function(event) {
if (event.lengthComputable) {
var percentComplete = (event.loaded / event.total) * 100;
$("#upload_result").html(percentComplete+" % "+ kivi.t8("uploaded"));
}
};

ns.attFailed = function() {
$('#upload_modal').modal('close');
$("#upload_result").html(kivi.t8("An error occurred while transferring the file."));
};

ns.attCanceled = function() {
$('#upload_modal').modal('close');
$("#upload_result").html(kivi.t8("The transfer has been canceled by the user."));
};

ns.attSuccess = function() {
$('#upload_modal').modal('close');
$("#upload_result").html(kivi.t8("Files have been uploaded successfully."));
};

ns.resolve_object = function(event) {
let obj_type = $('#object_type').val();
let number = event.target.value;

$.ajax({
url: "controller.pl",
data: {
action: "ImageUpload/resolve_object_by_number",
object_type: obj_type,
object_number: number
},
type: "json",
success: (json) => {
if (json.error) {
$("#object_description").html("");
$("#object_id").val("");
} else {
$("#object_description").html(json.description);
$("#object_id").val(json.id);
}
},
error: () => {
$("#object_description").html("");
$("#object_id").val("");
}
});
};

ns.init = function() {
ns.reload_images();
};


});

$(kivi.ImageUpload.init);
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