(bump:patch) dynamic help page

Author: lone17

libs/ktem/ktem/pages/help.py

@@ -1,25 +1,72 @@
+from importlib.metadata import version
 from pathlib import Path
 
 import gradio as gr
+import requests
+from theflow.settings import settings
+
+
+def get_remote_doc(url):
+    try:
+        res = requests.get(url)
+        return res.text
+    except Exception as e:
+        print(f"Failed to fetch document from {url}: {e}")
+        return ""
+
+
+def get_changelogs(version):
+    release_url = f"https://api.github.com/repos/Cinnamon/kotaemon/releases/{version}"
+    try:
+        res = requests.get(release_url).json()
+        changelogs = res.get("body", "")
+
+        return changelogs
+    except Exception as e:
+        print(f"Failed to fetch changelogs from {release_url}: {e}")
+        return ""
 
 
 class HelpPage:
     def __init__(self, app):
         self._app = app
-        self.md_dir = Path(__file__).parent.parent / "assets" / "md"
-        self.doc_dir = Path(__file__).parents[4] / "docs"
+        self.doc_dir = Path(settings.KH_DOC_DIR)
+        self.remote_content_url = "https://raw.githubusercontent.com/Cinnamon/kotaemon"
 
-        with gr.Accordion("About"):
-            with (self.md_dir / "about.md").open(encoding="utf-8") as fi:
-                gr.Markdown(fi.read())
+        self.app_version = None
+        try:
+            # Caution: This might produce the wrong version
+            # https://stackoverflow.com/a/59533071
+            self.app_version = version("kotaemon_app")
+        except Exception as e:
+            print(f"Failed to get app version: {e}")
 
-        with gr.Accordion("User Guide"):
-            with (self.doc_dir / "usage.md").open(encoding="utf-8") as fi:
-                gr.Markdown(fi.read())
+        about_md_dir = self.doc_dir / "about.md"
+        if about_md_dir.exists():
+            with (self.doc_dir / "about.md").open(encoding="utf-8") as fi:
+                about_md = fi.read()
+        else:  # fetch from remote
+            about_md = get_remote_doc(
+                f"{self.remote_content_url}/v{self.app_version}/docs/about.md"
+            )
+        if about_md:
+            with gr.Accordion("About"):
+                gr.Markdown(about_md)
 
-        with gr.Accordion("Changelogs"):
-            gr.Markdown(self.get_changelogs())
+        user_guide_md_dir = self.doc_dir / "usage.md"
+        if user_guide_md_dir.exists():
+            with (self.doc_dir / "usage.md").open(encoding="utf-8") as fi:
+                user_guide_md = fi.read()
+        else:  # fetch from remote
+            user_guide_md = get_remote_doc(
+                f"{self.remote_content_url}/v{self.app_version}/docs/usage.md"
+            )
+        if user_guide_md:
+            with gr.Accordion("User Guide"):
+                gr.Markdown(user_guide_md)
 
-    def get_changelogs(self):
-        with (self.md_dir / "changelogs.md").open(encoding="utf-8") as fi:
-            return fi.read()
+        if self.app_version:
+            changelogs = get_changelogs("tags/v" + self.app_version)
+            if changelogs:
+                with gr.Accordion(f"Changelogs (v{self.app_version})"):
+                    gr.Markdown(changelogs)