From 74438a31458af8bddd08d90eacc6d63677bab844 Mon Sep 17 00:00:00 2001
From: Jonas Dellinger <jonas@dellinger.dev>
Date: Fri, 13 May 2022 19:14:47 +0200
Subject: Work on react frontend loader

---
 backend/utilities.py | 106 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 106 insertions(+)
 create mode 100644 backend/utilities.py

(limited to 'backend/utilities.py')

diff --git a/backend/utilities.py b/backend/utilities.py
new file mode 100644
index 00000000..39f9ca55
--- /dev/null
+++ b/backend/utilities.py
@@ -0,0 +1,106 @@
+from aiohttp import ClientSession
+from injector import inject_to_tab
+import uuid
+
+class Utilities:
+    def __init__(self, context) -> None:
+        self.context = context
+        self.util_methods = {
+            "ping": self.ping,
+            "http_request": self.http_request,
+            "confirm_plugin_install": self.confirm_plugin_install,
+            "execute_in_tab": self.execute_in_tab,
+            "inject_css_into_tab": self.inject_css_into_tab,
+            "remove_css_from_tab": self.remove_css_from_tab
+        }
+
+    async def confirm_plugin_install(self, request_id):
+        return await self.context.plugin_browser.confirm_plugin_install(request_id)
+
+    async def http_request(self, method="", url="", **kwargs):
+        async with ClientSession() as web:
+            async with web.request(method, url, **kwargs) as res:
+                return {
+                    "status": res.status,
+                    "headers": dict(res.headers),
+                    "body": await res.text()
+                }
+
+    async def ping(self, **kwargs):
+        return "pong"
+
+    async def execute_in_tab(self, tab, run_async, code):       
+        try:
+            result = await inject_to_tab(tab, code, run_async)
+            if "exceptionDetails" in result["result"]:
+                return {
+                    "success": False,
+                    "result": result["result"]
+                }
+
+            return {
+                "success": True,
+                "result" : result["result"]["result"].get("value")
+            }
+        except Exception as e:
+            return { 
+                "success": False,
+                "result": e
+            }
+
+    async def inject_css_into_tab(self, tab, style):
+        try:
+            css_id = str(uuid.uuid4())
+
+            result = await inject_to_tab(tab, 
+                f"""
+                (function() {{
+                    const style = document.createElement('style');
+                    style.id = "{css_id}";
+                    document.head.append(style);
+                    style.textContent = `{style}`;
+                }})()
+                """, False)
+
+            if "exceptionDetails" in result["result"]:
+                return {
+                    "success": False,
+                    "result": result["result"]
+                }
+
+            return {
+                "success": True,
+                "result" : css_id
+            }
+        except Exception as e:
+            return { 
+                "success": False,
+                "result": e
+            }
+
+    async def remove_css_from_tab(self, tab, css_id):
+        try:
+            result = await inject_to_tab(tab, 
+                f"""
+                (function() {{
+                    let style = document.getElementById("{css_id}");
+
+                    if (style.nodeName.toLowerCase() == 'style')
+                        style.parentNode.removeChild(style);
+                }})()
+                """, False)
+
+            if "exceptionDetails" in result["result"]:
+                return {
+                    "success": False,
+                    "result": result
+                }
+
+            return {
+                "success": True
+            }
+        except Exception as e:
+            return { 
+                "success": False,
+                "result": e
+            }
-- 
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