refactor: extract WeatherAPI widget into its own

This was done to allow for choice. In the first step I copied over the
existing code into a new folder and accompanied it with icons and
locales. There is no indicator of night in the JSON responses, which
made me delete the respective icons.

I copied and updated the README to fit the current implementation.
I will need to add screenshots before I can ask for another round of
review.

Signed-off-by: André Jaenisch <[email protected]>

Author: Ryuno-Ki

weather-api-widget/README.md

@@ -0,0 +1,110 @@
+# WeatherAPI widget
+
+The widget consists of one section:
+- current weather, including humidity, wind speed, UV index
+
+## Customization
+
+It is possible to customize widget by providing a table with all or some of the
+following config parameters:
+
+| Name | Default | Description |
+|---|---|---|
+| coordinates | Required | Table with two elements: latitude and longitude, e.g. `{46.204400, 6.143200}` | 
+| api_key | Required | [Follow the documentation](https://www.weatherapi.com/docs/) |
+| font_name | `beautiful.font:gsub("%s%d+$", "")` | **Name** of the font to use e.g. 'Play' |
+| units | `metric` | `metric` for celsius, `imperial` for fahrenheit |
+| icon_pack_name | `weather-underground-icons` | Name of the icon pack, could be `weather-underground-icon` or `VitalyGorbachev` or create your own, more details below |
+| icons_extension | `.png` | File extension of icons in the pack |
+| timeout | 120 | How often in seconds the widget refreshes |
+
+### Icons:
+
+The widget comes with two predefined icon packs:
+
+ - [weather-underground-icons](https://github.com/manifestinteractive/weather-underground-icons)
+ - [VitalyGorbachev](https://www.flaticon.com/authors/vitaly-gorbachev)
+
+To add your custom icons, create a folder with the pack name under `/icons` and
+use the folder name in widget's config. There should be 18 icons, preferably
+128x128 minimum. Icons should also respect the naming convention, please check
+widget's source.
+
+### Examples:
+
+#### Custom font, icons
+
+```lua
+weather_api_widget({
+    api_key='<your-key>',
+    coordinates = {45.5017, -73.5673},
+    units = 'imperial',
+    font_name = 'Carter One',
+    icons = 'VitalyGorbachev',
+    icons_extension = '.svg',
+}),
+```
+
+#### Only current weather
+
+```lua
+weather_api_widget({
+    api_key='<your-key>',
+    coordinates = {45.5017, -73.5673},
+}),
+```
+
+## Installation
+
+1. Download json parser for lua from
+   [github.com/rxi/json.lua](https://github.com/rxi/json.lua) and place it
+   under **~/.config/awesome/**
+   (don't forget to star a repo <i class="fa fa-github-alt"></i> ):
+
+    ```bash
+    wget -P ~/.config/awesome/ https://raw.githubusercontent.com/rxi/json.lua/master/json.lua
+    ```
+
+1. Clone this repo under **~/.config/awesome/**:
+
+    ```bash
+    git clone https://github.com/streetturtle/awesome-wm-widgets.git ~/.config/awesome/
+    ```
+
+1. [Get Weather API key](https://www.weatherapi.com/docs/).
+
+1. Require weather widget at the beginning of **rc.lua**:
+
+    ```lua
+    local weather_api_widget = require("awesome-wm-widgets.weather-api-widget.weather")
+    ```
+
+1. Add widget to the tasklist:
+
+    ```lua
+    s.mytasklist, -- Middle widget
+        { -- Right widgets
+            layout = wibox.layout.fixed.horizontal,
+            ...
+            --default
+            weather_api_widget({
+                api_key='<your-key>',
+                coordinates = {45.5017, -73.5673},
+            }),
+            ,
+            --customized
+            weather_api_widget({
+                api_key='<your-key>',
+                coordinates = {45.5017, -73.5673},
+                units = 'imperial',
+                font_name = 'Carter One',
+                icons = 'VitalyGorbachev',
+                icons_extension = '.svg',
+            }),
+            ...
+    ```
+
+## How it works
+
+The widget calls the API repeatedly in the specified intervals. The JSON
+response is parsed and interpreted to build the popup.