https://pscronos.com.br/src/Main/Directives/imgUrl.js?v=1.20.047

1angular
2    .module("RecebeDigitalSiteApp")
3    .directive("imgUrl", function ($http, $q, $location, config) {
4        return {
5            restrict: "A",
6            require: "ngModel",
7            scope: {
8                s3BaseUrl: "=s3url",
9                object: "=object",
10                lBackground: "=background",
11                fallback: "@?", // opcional
12            },
13            link: function (scope, elem, attrs, ngModel) {
14                function applyUrl(url) {
15                    if (scope.lBackground === "true") {
16                        elem.css(
17                            "background",
18                            `url('${url}') no-repeat center`
19                        );
20                        return;
21                    }
22
23                    // Para <img>
24                    elem.attr("src", url);
25                    // Para <a>
26                    elem.attr("href", url);
27
28                    // Se o pai também é clicável
29                    if (elem.parent().hasClass("aws-s3-parent")) {
30                        elem.parent().attr("href", url);
31                    }
32                }
33
34                // 2. Se não tiver cache, busca do backend
35                ngModel.$asyncValidators.imgGenerateURL = function () {
36                    const fileFinalUrl = `${scope.s3BaseUrl}${scope.object}`;
37                    applyUrl(fileFinalUrl);
38                };
39            },
40        };
41    });