Simplify API documentation by using doctests (#73)

* Add doctests to SmartBulb

* Add SmartDevice doctests, cleanup README.md

* add doctests for smartplug and smartstrip

* add discover doctests

* Fix bulb mock

* add smartdimmer doctests

* add sphinx-generated docs, cleanup readme a bit

* remove sphinx-click as it does not work with asyncclick

* in preparation for rtd hooking, move doc deps to be separate from dev deps

* pytestmark needs to be applied separately for each and every file, this fixes the tests

* use pathlib for resolving relative paths

* Skip discovery doctest on python3.7

The code is just fine, but some reason the mocking behaves differently between 3.7 and 3.8.
The latter seems to accept a discrete object for asyncio.run where the former expects a coroutine..

docs/Makefile

@@ -0,0 +1,20 @@
+# Minimal makefile for Sphinx documentation
+#
+
+# You can set these variables from the command line, and also
+# from the environment for the first two.
+SPHINXOPTS    ?=
+SPHINXBUILD   ?= sphinx-build
+SOURCEDIR     = source
+BUILDDIR      = build
+
+# Put it first so that "make" without argument is like "make help".
+help:
+	@$(SPHINXBUILD) -M help "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O)
+
+.PHONY: help Makefile
+
+# Catch-all target: route all unknown targets to Sphinx using the new
+# "make mode" option.  $(O) is meant as a shortcut for $(SPHINXOPTS).
+%: Makefile
+	@$(SPHINXBUILD) -M $@ "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O)

docs/make.bat

@@ -0,0 +1,35 @@
+@ECHO OFF
+
+pushd %~dp0
+
+REM Command file for Sphinx documentation
+
+if "%SPHINXBUILD%" == "" (
+	set SPHINXBUILD=sphinx-build
+)
+set SOURCEDIR=source
+set BUILDDIR=build
+
+if "%1" == "" goto help
+
+%SPHINXBUILD% >NUL 2>NUL
+if errorlevel 9009 (
+	echo.
+	echo.The 'sphinx-build' command was not found. Make sure you have Sphinx
+	echo.installed, then set the SPHINXBUILD environment variable to point
+	echo.to the full path of the 'sphinx-build' executable. Alternatively you
+	echo.may add the Sphinx directory to PATH.
+	echo.
+	echo.If you don't have Sphinx installed, grab it from
+	echo.http://sphinx-doc.org/
+	exit /b 1
+)
+
+%SPHINXBUILD% -M %1 %SOURCEDIR% %BUILDDIR% %SPHINXOPTS% %O%
+goto end
+
+:help
+%SPHINXBUILD% -M help %SOURCEDIR% %BUILDDIR% %SPHINXOPTS% %O%
+
+:end
+popd

docs/source/_static/copybutton.js

@@ -0,0 +1,65 @@
+// Copyright 2014 PSF. Licensed under the PYTHON SOFTWARE FOUNDATION LICENSE VERSION 2
+// File originates from the cpython source found in Doc/tools/sphinxext/static/copybutton.js
+
+$(document).ready(function() {
+    /* Add a [>>>] button on the top-right corner of code samples to hide
+     * the >>> and ... prompts and the output and thus make the code
+     * copyable. */
+    var div = $('.highlight-python .highlight,' +
+                '.highlight-default .highlight,' +
+                '.highlight-python3 .highlight')
+    var pre = div.find('pre');
+
+    // get the styles from the current theme
+    pre.parent().parent().css('position', 'relative');
+    var hide_text = 'Hide the prompts and output';
+    var show_text = 'Show the prompts and output';
+    var border_width = pre.css('border-top-width');
+    var border_style = pre.css('border-top-style');
+    var border_color = pre.css('border-top-color');
+    var button_styles = {
+        'cursor':'pointer', 'position': 'absolute', 'top': '0', 'right': '0',
+        'border-color': border_color, 'border-style': border_style,
+        'border-width': border_width, 'color': border_color, 'text-size': '75%',
+        'font-family': 'monospace', 'padding-left': '0.2em', 'padding-right': '0.2em',
+        'border-radius': '0 3px 0 0'
+    }
+
+    // create and add the button to all the code blocks that contain >>>
+    div.each(function(index) {
+        var jthis = $(this);
+        if (jthis.find('.gp').length > 0) {
+            var button = $('<span class="copybutton">&gt;&gt;&gt;</span>');
+            button.css(button_styles)
+            button.attr('title', hide_text);
+            button.data('hidden', 'false');
+            jthis.prepend(button);
+        }
+        // tracebacks (.gt) contain bare text elements that need to be
+        // wrapped in a span to work with .nextUntil() (see later)
+        jthis.find('pre:has(.gt)').contents().filter(function() {
+            return ((this.nodeType == 3) && (this.data.trim().length > 0));
+        }).wrap('<span>');
+    });
+
+    // define the behavior of the button when it's clicked
+    $('.copybutton').click(function(e){
+        e.preventDefault();
+        var button = $(this);
+        if (button.data('hidden') === 'false') {
+            // hide the code output
+            button.parent().find('.go, .gp, .gt').hide();
+            button.next('pre').find('.gt').nextUntil('.gp, .go').css('visibility', 'hidden');
+            button.css('text-decoration', 'line-through');
+            button.attr('title', show_text);
+            button.data('hidden', 'true');
+        } else {
+            // show the code output
+            button.parent().find('.go, .gp, .gt').show();
+            button.next('pre').find('.gt').nextUntil('.gp, .go').css('visibility', 'visible');
+            button.css('text-decoration', 'none');
+            button.attr('title', hide_text);
+            button.data('hidden', 'false');
+        }
+    });
+});

docs/source/cli.rst

@@ -0,0 +1,28 @@
+Command-line usage
+==================
+
+The package is shipped with a console tool named kasa, please refer to ``kasa --help`` for detailed usage.
+The device to which the commands are sent is chosen by `KASA_HOST` environment variable or passing ``--host <address>`` as an option.
+To see what is being sent to and received from the device, specify option ``--debug``.
+
+To avoid discovering the devices when executing commands its type can be passed by specifying either ``--plug`` or ``--bulb``,
+if no type is given its type will be discovered automatically with a small delay.
+Some commands (such as reading energy meter values and setting color of bulbs) additional parameters are required,
+which you can find by adding ``--help`` after the command, e.g. ``kasa emeter --help`` or ``kasa hsv --help``.
+
+If no command is given, the ``state`` command will be executed to query the device state.
+
+Provisioning
+~~~~~~~~~~~~
+
+You can provision your device without any extra apps by using the ``kasa wifi`` command:
+
+1. If the device is unprovisioned, connect to its open network
+2. Use ``kasa discover`` (or check the routes) to locate the IP address of the device (likely 192.168.0.1)
+3. Scan for available networks using ``kasa wifi scan``
+4. Join/change the network using ``kasa wifi join`` command, see ``--help`` for details.
+
+``kasa --help``
+~~~~~~~~~~~~~~~
+
+.. program-output:: kasa --help

docs/source/conf.py

@@ -0,0 +1,70 @@
+# Configuration file for the Sphinx documentation builder.
+#
+# This file only contains a selection of the most common options. For a full
+# list see the documentation:
+# https://www.sphinx-doc.org/en/master/usage/configuration.html
+
+# -- Path setup --------------------------------------------------------------
+
+# If extensions (or modules to document with autodoc) are in another directory,
+# add these directories to sys.path here. If the directory is relative to the
+# documentation root, use os.path.abspath to make it absolute, like shown here.
+#
+# import os
+# import sys
+# sys.path.insert(0, os.path.abspath('.'))
+
+
+# -- Project information -----------------------------------------------------
+
+project = "python-kasa"
+copyright = "2020, python-kasa developers"
+author = "python-kasa developers"
+
+
+# -- General configuration ---------------------------------------------------
+
+# Add any Sphinx extension module names here, as strings. They can be
+# extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
+# ones.
+extensions = [
+    "sphinx.ext.autodoc",
+    "sphinx.ext.coverage",
+    "sphinx.ext.viewcode",
+    "sphinxcontrib.programoutput",
+]
+
+# Add any paths that contain templates here, relative to this directory.
+templates_path = ["_templates"]
+
+# List of patterns, relative to source directory, that match files and
+# directories to ignore when looking for source files.
+# This pattern also affects html_static_path and html_extra_path.
+exclude_patterns = []  # type: ignore
+
+
+# -- Options for HTML output -------------------------------------------------
+
+# The theme to use for HTML and HTML Help pages.  See the documentation for
+# a list of builtin themes.
+#
+html_theme = "sphinx_rtd_theme"
+
+# Add any paths that contain custom static files (such as style sheets) here,
+# relative to this directory. They are copied after the builtin static files,
+# so a file named "default.css" will overwrite the builtin "default.css".
+html_static_path = ["_static"]
+
+
+def setup(app):
+    # add copybutton to hide the >>> prompts, see https://github.com/readthedocs/sphinx_rtd_theme/issues/167
+    app.add_js_file("copybutton.js")
+
+    # see https://github.com/readthedocs/recommonmark/issues/191#issuecomment-622369992
+    from m2r import MdInclude
+
+    app.add_config_value("no_underscore_emphasis", False, "env")
+    app.add_config_value("m2r_parse_relative_links", False, "env")
+    app.add_config_value("m2r_anonymous_references", False, "env")
+    app.add_config_value("m2r_disable_inline_math", False, "env")
+    app.add_directive("mdinclude", MdInclude)

docs/source/discover.rst

@@ -0,0 +1,17 @@
+Discovering devices
+===================
+
+.. code-block::
+
+    import asyncio
+    from kasa import Discover
+
+    devices = asyncio.run(Discover.discover())
+    for addr, dev in devices.items():
+        asyncio.run(dev.update())
+        print(f"{addr} >> {dev}")
+
+
+.. autoclass:: kasa.Discover
+    :members:
+    :undoc-members:

docs/source/index.rst

@@ -0,0 +1,17 @@
+python-kasa documentation
+=========================
+
+.. mdinclude:: ../../README.md
+
+.. toctree::
+   :maxdepth: 2
+
+
+   Home <self>
+   cli
+   discover
+   smartdevice
+   smartbulb
+   smartplug
+   smartdimmer
+   smartstrip

docs/source/smartbulb.rst

@@ -0,0 +1,6 @@
+Bulbs
+===========
+
+.. autoclass:: kasa.SmartBulb
+    :members:
+    :undoc-members:

docs/source/smartdevice.rst

@@ -0,0 +1,18 @@
+Common API
+======================
+
+The basic functionalities of all supported devices are accessible using the common :class:`SmartDevice` base class.
+
+The property accesses use the data obtained before by awaiting :func:`update()`.
+The values are cached until the next update call. In practice this means that property accesses do no I/O and are dependent, while I/O producing methods need to be awaited.
+
+Methods changing the state of the device do not invalidate the cache (i.e., there is no implicit `update()`).
+You can assume that the operation has succeeded if no exception is raised.
+These methods will return the device response, which can be useful for some use cases.
+
+Errors are raised as :class:`SmartDeviceException` instances for the library user to handle.
+
+
+.. autoclass:: kasa.SmartDevice
+    :members:
+    :undoc-members:

docs/source/smartdimmer.rst

@@ -0,0 +1,6 @@
+Dimmers
+=======
+
+.. autoclass:: kasa.SmartDimmer
+    :members:
+    :undoc-members:

docs/source/smartplug.rst

@@ -0,0 +1,6 @@
+Plugs
+=====
+
+.. autoclass:: kasa.SmartPlug
+    :members:
+    :undoc-members:

docs/source/smartstrip.rst

@@ -0,0 +1,6 @@
+Smart strips
+============
+
+.. autoclass:: kasa.SmartStrip
+    :members:
+    :undoc-members: