feat: Add authentication cell

ui.ipynb

@@ -1,5 +1,29 @@
 {
  "cells": [
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "6f434bc9",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "import json\n",
+    "from pathlib import Path\n",
+    "import ee\n",
+    "\n",
+    "\n",
+    "def authenticate_gee():\n",
+    "    \"\"\"Authenticate GEE using the credentials file in the user's home directory.\"\"\"\n",
+    "    credential_folder_path = Path.home() / \".config\" / \"earthengine\"\n",
+    "    credential_file_path = credential_folder_path / \"credentials\"\n",
+    "    credentials = json.loads(credential_file_path.read_text())\n",
+    "    project = credentials.get(\"project_id\", credentials.get(\"project\", None))\n",
+    "    ee.Initialize(project=project)\n",
+    "    assert ee.data.getAssetRoots(), \"Error: You have not initialized the GEE home folder. Please follow the the SEPAL documentation: https://docs.sepal.io/en/latest/setup/gee.html#initialize-the-home-folder.\"\n",
+    "    \n",
+    "authenticate_gee()\n"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {},