1 files changed, 43 insertions, 0 deletions

diff --git a/src/mixins/service.js b/src/mixins/service.js
new file mode 100644
index 0000000..17fa6fc
--- /dev/null
+++ b/src/mixins/service.js
@@ -0,0 +1,43 @@
+export default {
+  props: {
+    proxy: Object,
+  },
+  created: function () {
+    // custom service often consume info from an API using the item link (url) as a base url,
+    // but sometimes the base url is different. An optional alternative URL can be provided with the "endpoint" key.
+    this.endpoint = this.item.endpoint || this.item.url;
+
+    if (this.endpoint.endsWith("/")) {
+      this.endpoint = this.endpoint.slice(0, -1);
+    }
+  },
+  methods: {
+    fetch: function (path, init, json = true) {
+      let options = {};
+
+      if (this.proxy?.useCredentials) {
+        options.credentials = "include";
+      }
+
+      // Each item can override the credential settings
+      if (this.item.useCredentials !== undefined) {
+        options.credentials =
+          this.item.useCredentials === true ? "include" : "omit";
+      }
+
+      options = Object.assign(options, init);
+
+      if (path.startsWith("/")) {
+        path = path.slice(1);
+      }
+
+      return fetch(`${this.endpoint}/${path}`, options).then((response) => {
+        if (!response.ok) {
+          throw new Error("Not 2xx response");
+        }
+
+        return json ? response.json() : response;
+      });
+    },
+  },
+};