feat/config

.github/workflows/static.yml

@@ -10,18 +10,18 @@ concurrency:
 
 jobs:
   static:
-    name: Static Analysis - 3.11
+    name: Static Analysis - 3.8
     runs-on: ubuntu-latest
     steps:
       - name: Check out Repo
         uses: actions/checkout@v4
         with:
           persist-credentials: false
-      - name: Set up Python 3.11
+      - name: Set up Python 3.8
         uses: actions/setup-python@v4
         id: setup-python
         with:
-          python-version: "3.11"
+          python-version: "3.8"
       - name: Install Poetry
         uses: snok/install-poetry@v1
         with:

.gitignore

@@ -12,6 +12,7 @@
 !tests/data/**/*.sql
 Pipfile
 snapshot_report.html
+.harlequin.toml
 
 # Byte-compiled / optimized / DLL files
 __pycache__/

.pre-commit-config.yaml

@@ -1,15 +1,15 @@
 repos:
   - repo: https://github.com/psf/black
-    rev: 23.10.0
+    rev: 23.11.0
     hooks:
       - id: black
-  - repo: https://github.com/charliermarsh/ruff-pre-commit
-    rev: v0.1.1
+  - repo: https://github.com/astral-sh/ruff-pre-commit
+    rev: v0.1.6
     hooks:
       - id: ruff
         args: [ --fix, --exit-non-zero-on-fix ]
   - repo: https://github.com/pre-commit/mirrors-mypy
-    rev: v1.6.1
+    rev: v1.7.1
     hooks:
       - id: mypy
         additional_dependencies:
@@ -22,6 +22,8 @@ repos:
           - pytest
           - types-pygments
           - rich-click>=1.7.1
+          - questionary
+          - tomlkit
         args:
           - "--disallow-untyped-calls"
           - "--disallow-untyped-defs"

CHANGELOG.md

@@ -4,6 +4,12 @@ All notable changes to this project will be documented in this file.
 
 ## [Unreleased]
 
+### Features
+
+-   Harlequin can now be configured using a TOML file. The config file can both specify options for Harlequin (like the theme and row limit) and also for installed adapters (like the host, username, and password for a database connection). The config file can define multiple "profiles" (sets of configuration), and you can select the profile to use when starting Harlequin with the `--profile` option (alias `-P`). By default, Harlequin searches the current directory and home directories for files called either `.harlequin.toml` or `pyproject.toml`, and merges the config it finds in them. You can specify a different path using the `--config-path` option. Values loaded from config files can be overridden by passing CLI options ([#206](https://github.com/tconbeer/harlequin/issues/206)).
+-   Harlequin now ships with a wizard to make it easy to create or update config files. Simply run Harlequin with the `--config` option.
+-   Adds a `harlequin` theme. You can use it with `harlequin -t harlequin`.
+
 ## [1.5.0] - 2023-11-28
 
 ### Breaking Changes

pyproject.toml

@@ -35,13 +35,17 @@ shandy-sqlfmt = ">=0.19.0"
 platformdirs = "^3.10.0"
 pyperclip = "^1.8.2"
 importlib_metadata = { version = ">=4.6.0", python = "<3.10.0" }
+tomli = { version = "^2.0.1", python = "<3.11.0" }
+tomlkit = "^0.12.3"
 
 # database adapters (optional installs for extras)
 harlequin-postgres = { version = "^0.1", optional = true }
+questionary = "^2.0.1"
 
 [tool.poetry.group.dev.dependencies]
 pre-commit = "^3.3.1"
 textual-dev = "^1.0.1"
+harlequin-postgres = "^0.1.3"
 
 [tool.poetry.group.static.dependencies]
 black = "^23.3.0"
@@ -66,6 +70,9 @@ postgres = ["harlequin-postgres"]
 duckdb = "harlequin_duckdb:DuckDbAdapter"
 sqlite = "harlequin_sqlite:HarlequinSqliteAdapter"
 
+[tool.poetry.plugins."pygments.styles"]
+harlequin = "harlequin.colors:HarlequinPygmentsStyle"
+
 [tool.ruff]
 select = ["A", "B", "E", "F", "I"]
 target-version = "py38"

src/harlequin/adapter.py

@@ -166,7 +166,10 @@ def __init__(self, conn_str: Sequence[str], **options: Any) -> None:
             - **options (Any): Options received from the command line, config file,
                 or env variables. Adapters should be robust to receiving both subsets
                 and supersets of their declared options. They should disregard any
-                extra (unexpected) kwargs.
+                extra (unexpected) kwargs. Adapters should check the types of options,
+                as they may not be cast to the correct types.
+
+        Raises: HarlequinConfigError if a received option is the wrong value or type.
         """
         pass
 

src/harlequin/app.py

@@ -5,8 +5,6 @@
 from functools import partial
 from typing import Dict, List, Optional, Type, Union
 
-from rich import print
-from rich.panel import Panel
 from textual import work
 from textual.app import App, ComposeResult
 from textual.binding import Binding
@@ -38,9 +36,11 @@
     export_callback,
 )
 from harlequin.exception import (
+    HarlequinConfigError,
     HarlequinConnectionError,
     HarlequinQueryError,
     HarlequinThemeError,
+    pretty_print_error,
 )
 
 
@@ -93,55 +93,41 @@ def __init__(
         self,
         adapter: HarlequinAdapter,
         theme: str = "monokai",
-        max_results: int = 100_000,
+        max_results: int | str = 100_000,
         driver_class: Union[Type[Driver], None] = None,
         css_path: Union[CSSPathType, None] = None,
         watch_css: bool = False,
     ):
         super().__init__(driver_class, css_path, watch_css)
         self.adapter = adapter
         self.theme = theme
-        self.max_results = max_results
-        self.limit = min(500, max_results) if max_results > 0 else 500
+        try:
+            self.max_results = int(max_results)
+        except ValueError:
+            pretty_print_error(
+                HarlequinConfigError(
+                    f"limit={max_results!r} was set by config file but is not "
+                    "a valid integer."
+                )
+            )
+            self.exit(return_code=2)
+        else:
+            self.limit = min(500, self.max_results) if self.max_results > 0 else 500
         self.query_timer: Union[float, None] = None
         try:
             self.connection = self.adapter.connect()
         except HarlequinConnectionError as e:
-            print(
-                Panel.fit(
-                    str(e),
-                    title=e.title
-                    if e.title
-                    else (
-                        "Harlequin encountered an error "
-                        "while connecting to the database."
-                    ),
-                    title_align="left",
-                    border_style="red",
-                )
-            )
-            self.exit()
+            pretty_print_error(e)
+            self.exit(return_code=2)
         else:
             if self.connection.init_message:
                 self.notify(self.connection.init_message)
 
         try:
             self.app_colors = HarlequinColors.from_theme(theme)
         except HarlequinThemeError as e:
-            print(
-                Panel.fit(
-                    (
-                        f"No theme found with the name {e}.\n"
-                        "Theme must be the name of a Pygments Style. "
-                        "You can browse the supported styles here:\n"
-                        "https://pygments.org/styles/"
-                    ),
-                    title="Harlequin couldn't load your theme.",
-                    title_align="left",
-                    border_style="red",
-                )
-            )
-            self.exit()
+            pretty_print_error(e)
+            self.exit(return_code=2)
         else:
             self.design = self.app_colors.design_system
             self.stylesheet = Stylesheet(variables=self.get_css_variables())