Met Eireann weather provider

[jmason]

A new weather provider using Ireland's national weather service, Met Eireann. (also a tidier version of #33)

I think it should also achieve the license condition of supporting the alert API as well, which handily enough uses the same format as the Met Office one. I haven't seen what this looks like in reality yet though.... as there is no weather alert in progress right now :)

[jmason]

FYI, this displayed a severe weather warning this morning -- "small craft warning for all coasts", although it looks like this is not due to happen until Wednesday:

"Small Craft warning for all coasts of Ireland
Northeasterly winds will reach force 6 or higher on all Irish coasts.

Valid: 09:00 Wednesday 30/03/2022 to 00:00 Friday 01/04/2022

Issued: 06:32 Monday 28/03/2022"

So the alert support is working, albeit may need a little work to filter out distant events. For the record, this is what the RSS doc looks like:

<channel>
<atom:link rel="self" type="application/rss+xml" href="https://www.met.ie/warnings"/>
<title>Met Éireann Warnings</title>
<link>https://www.met.ie/warnings</link>
<description>Warnings issued by Met Éireann. This RSS feed displays valid warnings for land areas only. Sea area warnings will be added at a later date. Clicking the links, loads the CAP (Common Alerting Protocol) XML file. Note: Moderate means ‘Status Yellow’, Severe means ‘Status Orange’ and extreme means ‘Status Red’</description>
<copyright>Public Domain</copyright>
<language>en</language>
<item>
<title>Small Craft warning for all coasts of Ireland</title>
<link>https://cap.met.ie//2.49.0.1.372.0.220328053202.N_Norm016_SmallCraft.xml</link>
<description>Northeasterly winds will reach force 6 or higher on all Irish coasts.</description>
<author>forecasts@met.ie (Met Éireann)</author>
<category>Marine</category>
<guid>https://cap.met.ie//2.49.0.1.372.0.220328053202.N_Norm016_SmallCraft.xml</guid>
<pubDate>Mon, 28 Mar 2022 05:32:02 GMT</pubDate>
</item>
<atom:link href="https://www.met.ie/warningsxml/rss.xml" rel="self" type="application/rss+xml"/>
</channel>
</rss>```

Unfortunately the event duration and onset time are not visible here -- scraping into the cap.met.ie URL is required to find them.  On the upside this looks like a standardised XML format for this data -- the Common Alerting Protocol? so that code should be reusable....

```curl https://cap.met.ie//2.49.0.1.372.0.220328053202.N_Norm016_SmallCraft.xml
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<?xml-stylesheet type="text/xsl" href="https://cap.met.ie/cap-en-style.xsl"?>
<alert xmlns="urn:oasis:names:tc:emergency:cap:1.2">
  <identifier>2.49.0.1.372.0.220328053202.N_Norm016_SmallCraft</identifier>
  <sender>forecasts@met.ie</sender>
  <sent>2022-03-28T06:32:02+01:00</sent>
  <status>Actual</status>
  <msgType>Alert</msgType>
  <scope>Public</scope>
  <incidents></incidents>
  <info>
    <language>en-GB</language>
    <category>Met</category>
    <event>Small Craft</event>
    <responseType>Monitor</responseType>
    <urgency>Future</urgency>
    <severity>Moderate</severity>
    <certainty>Likely</certainty>
    <effective>2022-03-28T06:32:02+01:00</effective>
    <onset>2022-03-30T09:00:00+01:00</onset>
    <expires>2022-04-01T00:00:00+01:00</expires>
    <senderName>Met Éireann</senderName>
    <headline>Small Craft warning for all coasts of Ireland</headline>
    <description>Northeasterly winds will reach force 6 or higher on all Irish coasts.</description>
    <instruction></instruction>
    <parameter>
      <valueName>awareness_level</valueName>
      <value>2; yellow; Moderate</value>
    </parameter>
    <parameter>
      <valueName>awareness_type</valueName>
      <value>1; Wind</value>
    </parameter>
    <area>
      <areaDesc>for all coasts of Ireland</areaDesc>
      <geocode>
        <valueName>EMMA_ID</valueName>
        <value>EI807</value>
      </geocode>
      <geocode>
        <valueName>EMMA_ID</valueName>
        <value>EI822</value>
      </geocode>
      <geocode>
        <valueName>EMMA_ID</valueName>
        <value>EI809</value>
      </geocode>
      <geocode>
        <valueName>EMMA_ID</valueName>
        <value>EI812</value>
      </geocode>
      <geocode>
        <valueName>EMMA_ID</valueName>
        <value>EI814</value>
      </geocode>
      <geocode>
        <valueName>EMMA_ID</valueName>
        <value>EI820</value>
      </geocode>
      <geocode>
        <valueName>EMMA_ID</valueName>
        <value>EI806</value>
      </geocode>
      <geocode>
        <valueName>EMMA_ID</valueName>
        <value>EI813</value>
      </geocode>
      <geocode>
        <valueName>EMMA_ID</valueName>
        <value>EI810</value>
      </geocode>
      <geocode>
        <valueName>EMMA_ID</valueName>
        <value>EI818</value>
      </geocode>
      <geocode>
        <valueName>EMMA_ID</valueName>
        <value>EI805</value>
      </geocode>
      <geocode>
        <valueName>EMMA_ID</valueName>
        <value>EI816</value>
      </geocode>
      <geocode>
        <valueName>EMMA_ID</valueName>
        <value>EI815</value>
      </geocode>
      <geocode>
        <valueName>EMMA_ID</valueName>
        <value>EI821</value>
      </geocode>
      <geocode>
        <valueName>EMMA_ID</valueName>
        <value>EI819</value>
      </geocode>
      <geocode>
        <valueName>EMMA_ID</valueName>
        <value>EI808</value>
      </geocode>
      <geocode>
        <valueName>EMMA_ID</valueName>
        <value>EI817</value>
      </geocode>
      <geocode>
        <valueName>EMMA_ID</valueName>
        <value>EI811</value>
      </geocode>
    </area>
  </info>
</alert>

[mendhak]

Thanks will start looking at this soon. I'll try to push directly to your branch to resolve some conflicts (I just added weather.gov so there were bound to be some)

[jmason]

I think I've fixed the conflicts there....

[mendhak]

Ah OK I also did, good thing I didn't push or it'd make things worse! I'll have a look again.

Just tried your branch for Cork and I got this, looks good so far!

[mendhak]

@jmason it was a real pleasure going through this PR. You took the time to follow the structure, comment patterns, debug logging, naming conventions, documentation, samples, and I appreciated your efforts here. 👍

I've also got a few question, I noticed in your branch, you've got a 3 color screen. I am curious to know how long does the screen refresh take?

What are the '20 km' and '143 km' values in the bottom right?

I also liked the 'today' and 'tomorrow' instead of today/tomorrow's date, it's a nice friendly idea, I will look to add this too.

[jmason]

@jmason it was a real pleasure going through this PR. You took the time to follow the structure, comment patterns, debug logging, naming conventions, documentation, samples, and I appreciated your efforts here. 👍

Cheers! :)

I've also got a few question, I noticed in your branch, you've got a 3 color screen. I am curious to know how long does the screen refresh take?

It's very slow -- 50-60 seconds or thereabouts to do a full screen refresh. As a result, I only update it once per hour, so that has a big impact on the pieces of data to display. For example, I don't include the minutes or seconds in the time display -- just the date and the hour. The 3-color output looks great though :)

What are the '20 km' and '143 km' values in the bottom right?

Those are the battery charge levels for our 2 electric cars; they're scraped from my local HomeAssistant instance.

I also liked the 'today' and 'tomorrow' instead of today/tomorrow's date, it's a nice friendly idea, I will look to add this too.

Cool, that'd be great :) I can provide diffs if that'd help?

[mendhak]

Nice thanks for those answers, I'm always curious to see how this project is used

Cool, that'd be great :) I can provide diffs if that'd help?

It's fine, I've found it already, no worries!