feat(pkg-py): Add .app() method, enable bookmarking by default

Author: cpsievert

pkg-py/CHANGELOG.md

@@ -5,6 +5,14 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [UNRELEASED]
+
+### New features
+
+* New `QueryChat.app()` method enables quicker/easier chatting with a dataset. (#xx)
+* Enabled bookmarking by default in both `.app()` and `.server()` methods. In latter case, you'll need to also specify the `bookmark_store` (either in `shiny.App()` or `shiny.express.app_opts()`) for it to take effect. (#xx)
+
+
 ## [UNRELEASED]
 
 ### Changes

pkg-py/src/querychat/_icons.py

@@ -0,0 +1,19 @@
+from typing import Literal
+
+from shiny import ui
+
+ICON_NAMES = Literal["funnel-fill", "terminal-fill", "table"]
+
+
+def bs_icon(name: ICON_NAMES) -> ui.HTML:
+    """Get Bootstrap icon SVG by name."""
+    if name not in BS_ICONS:
+        raise ValueError(f"Unknown Bootstrap icon: {name}")
+    return ui.HTML(BS_ICONS[name])
+
+
+BS_ICONS = {
+    "funnel-fill": '<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" class="bi bi-funnel-fill" viewBox="0 0 16 16"><path d="M1.5 1.5A.5.5 0 0 1 2 1h12a.5.5 0 0 1 .5.5v2a.5.5 0 0 1-.128.334L10 8.692V13.5a.5.5 0 0 1-.342.474l-3 1A.5.5 0 0 1 6 14.5V8.692L1.628 3.834A.5.5 0 0 1 1.5 3.5z"/></svg>',
+    "terminal-fill": '<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16" class="bi bi-terminal-fill " style="height:1em;width:1em;fill:currentColor;vertical-align:-0.125em;" aria-hidden="true" role="img" ><path d="M0 3a2 2 0 0 1 2-2h12a2 2 0 0 1 2 2v10a2 2 0 0 1-2 2H2a2 2 0 0 1-2-2V3zm9.5 5.5h-3a.5.5 0 0 0 0 1h3a.5.5 0 0 0 0-1zm-6.354-.354a.5.5 0 1 0 .708.708l2-2a.5.5 0 0 0 0-.708l-2-2a.5.5 0 1 0-.708.708L4.793 6.5 3.146 8.146z"></path></svg>',
+    "table": '<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16" class="bi bi-table " style="height:1em;width:1em;fill:currentColor;vertical-align:-0.125em;" aria-hidden="true" role="img" ><path d="M0 2a2 2 0 0 1 2-2h12a2 2 0 0 1 2 2v12a2 2 0 0 1-2 2H2a2 2 0 0 1-2-2V2zm15 2h-4v3h4V4zm0 4h-4v3h4V8zm0 4h-4v3h3a1 1 0 0 0 1-1v-2zm-5 3v-3H6v3h4zm-5 0v-3H1v2a1 1 0 0 0 1 1h3zm-4-4h4V8H1v3zm0-4h4V4H1v3zm5-3v3h4V4H6zm4 4H6v3h4V8z"></path></svg>',
+}

pkg-py/src/querychat/_querychat.py

@@ -4,9 +4,11 @@
 import warnings
 from typing import TYPE_CHECKING, Literal, Optional, overload
 
-from shiny import Inputs, Outputs, Session, module, ui
+from shiny import App, Inputs, Outputs, Session, module, reactive, render, req, ui
 from shiny.session import get_current_session
+from shinychat import output_markdown_stream
 
+from ._icons import bs_icon
 from ._querychat_impl import (
     ServerResult,
     init_impl,
@@ -131,6 +133,99 @@ def __init__(
         self._server_initialized: bool = False
         self._values: ServerResult | None = None
 
+    def app(
+        self, *, bookmark_store: Literal["url", "server", "disable"] = "url"
+    ) -> App:
+        """
+        Quickly chat with a dataset.
+
+        Creates a Shiny app with a chat sidebar and data table view -- providing a
+        quick-and-easy way to start chatting with your data.
+
+        Parameters
+        ----------
+        bookmark_store
+            The bookmarking store to use for the Shiny app. Options are:
+                - `"url"`: Store bookmarks in the URL (default).
+                - `"server"`: Store bookmarks on the server.
+                - `"disable"`: Disable bookmarking.
+
+        Returns
+        -------
+        :
+            A Shiny App object that can be run with `app.run()` or served with `shiny run`.
+
+        """
+        enable_bookmarking = bookmark_store != "disable"
+        table_name = self.data_source.table_name
+
+        def app_ui(request):
+            return ui.page_sidebar(
+                self.sidebar(),
+                ui.card(
+                    ui.card_header(
+                        ui.div(
+                            ui.div(
+                                bs_icon("terminal-fill"),
+                                ui.output_text("query_title", inline=True),
+                                class_="d-flex align-items-center gap-2",
+                            ),
+                            ui.output_ui("ui_reset", inline=True),
+                            class_="hstack gap-3",
+                        ),
+                    ),
+                    ui.output_ui("sql_output"),
+                    fill=False,
+                    style="max-height: 33%;",
+                ),
+                ui.card(
+                    ui.card_header(bs_icon("table"), " Data"),
+                    ui.output_data_frame("dt"),
+                ),
+                title=ui.span("querychat with ", ui.code(table_name)),
+                class_="bslib-page-dashboard",
+                fillable=True,
+            )
+
+        def app_server(input: Inputs, output: Outputs, session: Session):
+            self._server(enable_bookmarking=enable_bookmarking)
+
+            @render.text
+            def query_title():
+                return self.title() or "SQL Query"
+
+            @render.ui
+            def ui_reset():
+                req(self.sql())
+                return ui.input_action_button(
+                    "reset_query",
+                    "Reset Query",
+                    class_="btn btn-outline-danger btn-sm lh-1 ms-auto",
+                )
+
+            @reactive.effect
+            @reactive.event(input.reset_query)
+            def _():
+                self.sql("")
+                self.title(None)
+
+            @render.data_frame
+            def dt():
+                return self.df()
+
+            @render.ui
+            def sql_output():
+                sql = self.sql() or f"SELECT * FROM {table_name}"
+                sql_code = f"```sql\n{sql}\n```"
+                return output_markdown_stream(
+                    "sql_code",
+                    content=sql_code,
+                    auto_scroll=False,
+                    width="100%",
+                )
+
+        return App(app_ui, app_server, bookmark_store=bookmark_store)
+
     def sidebar(
         self,
         *,
@@ -186,7 +281,7 @@ def _ui_wrapper(**ui_kwargs):
 
         return _ui_wrapper(self._id, **kwargs)
 
-    def _server(self):
+    def _server(self, *, enable_bookmarking: bool = True) -> None:
         """
         Initialize the server module.
 
@@ -195,17 +290,7 @@ def _server(self):
         This is a private method since it is called automatically in Express mode.
 
         """
-        # No-op if already initialized
-        if self._server_initialized:
-            warnings.warn(
-                f"QueryChat server logic for instance '{self._id}' has already "
-                "been initialized. Subsequent calls to .server() are no-ops.",
-                UserWarning,
-                stacklevel=2,
-            )
-            return
-
-        # Needs be called within an active Shiny session
+        # Needs to be called within an active Shiny session
         session = get_current_session()
         if session is None:
             raise RuntimeError(
@@ -231,6 +316,7 @@ def mod_server_wrapper(
                 system_prompt=self.system_prompt,
                 greeting=self.greeting,
                 client=self.client,
+                enable_bookmarking=enable_bookmarking,
             )
 
         # Call the server module

pkg-py/src/querychat/_querychat_impl.py

@@ -20,6 +20,7 @@
     import chatlas
     import pandas as pd
     from narwhals.stable.v1.typing import IntoFrame
+    from shiny.bookmark import BookmarkState, RestoreState
 
 
 ReactiveString = reactive.Value[str]
@@ -178,10 +179,12 @@ def server_impl(
     system_prompt: str,
     greeting: Optional[str],
     client: chatlas.Chat,
+    enable_bookmarking: bool = False,
 ) -> ServerResult:
     # Reactive values to store state
     current_title = ReactiveStringOrNone(None)
     current_query = ReactiveString("")
+    has_greeted = reactive.value[bool](False)  # noqa: FBT003
 
     @reactive.calc
     def filtered_df():
@@ -239,6 +242,9 @@ def _():
 
     @reactive.effect
     async def greet_on_startup():
+        if has_greeted():
+            return
+
         if greeting:
             await chat_ui.append_message(greeting)
         elif greeting is None:
@@ -248,6 +254,30 @@ async def greet_on_startup():
             )
             await chat_ui.append_message_stream(stream)
 
+        has_greeted.set(True)
+
+    if enable_bookmarking:
+        chat_ui.enable_bookmarking(client)
+
+        def _on_bookmark(x: BookmarkState) -> None:
+            vals = x.values  # noqa: PD011
+            vals["querychat_current_query"] = current_query.get()
+            vals["querychat_current_title"] = current_title.get()
+            vals["querychat_has_greeted"] = has_greeted.get()
+
+        session.bookmark.on_bookmark(_on_bookmark)
+
+        def _on_restore(x: RestoreState) -> None:
+            vals = x.values  # noqa: PD011
+            if "querychat_current_query" in vals:
+                current_query.set(vals["querychat_current_query"])
+            if "querychat_current_title" in vals:
+                current_title.set(vals["querychat_current_title"])
+            if "querychat_has_greeted" in vals:
+                has_greeted.set(vals["querychat_has_greeted"])
+
+        session.bookmark.on_restore(_on_restore)
+
     return ServerResult(
         df=filtered_df,
         current_query=current_query,

pkg-py/src/querychat/tools.py

@@ -5,9 +5,9 @@
 
 import chevron
 from chatlas import ContentToolResult, Tool
-from htmltools import HTML
 from shinychat.types import ToolResultDisplay
 
+from ._icons import bs_icon
 from ._utils import df_to_html
 
 if TYPE_CHECKING:
@@ -66,9 +66,7 @@ def update_dashboard(query: str, title: str) -> ContentToolResult:
                     title=title,
                     show_request=False,
                     open=True,
-                    icon=HTML(
-                        '<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" class="bi bi-funnel-fill" viewBox="0 0 16 16"><path d="M1.5 1.5A.5.5 0 0 1 2 1h12a.5.5 0 0 1 .5.5v2a.5.5 0 0 1-.128.334L10 8.692V13.5a.5.5 0 0 1-.342.474l-3 1A.5.5 0 0 1 6 14.5V8.692L1.628 3.834A.5.5 0 0 1 1.5 3.5z"/></svg>',
-                    ),
+                    icon=bs_icon("funnel-fill"),
                 ),
             },
         )
@@ -142,9 +140,7 @@ def reset_dashboard() -> ContentToolResult:
                     title=None,
                     show_request=False,
                     open=False,
-                    icon=HTML(
-                        '<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16" class="bi bi-arrow-counterclockwise" style="height:1em;width:1em;fill:currentColor;vertical-align:-0.125em;" aria-hidden="true" role="img"><path fill-rule="evenodd" d="M8 3a5 5 0 1 1-4.546 2.914.5.5 0 0 0-.908-.417A6 6 0 1 0 8 2v1z"></path><path d="M8 4.466V.534a.25.25 0 0 0-.41-.192L5.23 2.308a.25.25 0 0 0 0 .384l2.36 1.966A.25.25 0 0 0 8 4.466z"></path></svg>',
-                    ),
+                    icon=bs_icon("terminal-fill"),
                 ),
             },
         )
@@ -213,9 +209,7 @@ def query(query: str, _intent: str = "") -> ContentToolResult:
                     markdown=markdown,
                     show_request=False,
                     open=True,
-                    icon=HTML(
-                        '<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" class="bi bi-table" viewBox="0 0 16 16"><path d="M0 2a2 2 0 0 1 2-2h12a2 2 0 0 1 2 2v12a2 2 0 0 1-2 2H2a2 2 0 0 1-2-2zm15 2h-4v3h4zm0 4h-4v3h4zm0 4h-4v3h3a1 1 0 0 0 1-1zm-5 3v-3H6v3zm-5 0v-3H1v2a1 1 0 0 0 1 1zm-4-4h4V8H1zm0-4h4V4H1zm5-3v3h4V4zm4 4H6v3h4z"/></svg>',
-                    ),
+                    icon=bs_icon("table"),
                 ),
             },
         )

pyproject.toml

@@ -21,7 +21,7 @@ maintainers = [
 dependencies = [
     "duckdb",
     "pandas",
-    "shiny",
+    "shiny @ git+https://github.com/posit-dev/py-shiny.git@fix/bookmark-missing-input-error",
     "shinywidgets",
     "htmltools",
     "chatlas>=0.12.0",