Get UK Covid Protection Level From Post Code

Get-CovidProtectionLevelFromPostCode.ps1

param(
[ValidatePattern(" *[a-zA-z0-9]{2,4} +[a-zA-z0-9]{2,4} *")]
[Parameter(Position = 0, Mandatory = $true)]
[string]$postCode
)
BEGIN
{
   $root = "https://coronavirus.data.gov.uk/search?postcode="
}
PROCESS{
    
    try{
    $encodedPostCode = $postCode.Trim().ToLower() -replace " +", "+"

    $url = $root + $encodedPostCode

    $page = Invoke-WebRequest -Uri $url -Method Get

    # Get the Middle layer Support Output Area from the title
    if($page.ParsedHtml.title -match "Daily summary \| ([a-zA-z, &]+)"){
        $MSOA = $matches[1]
    }
    # Parse the covid tier and Local Authority from the dashboard
        if (
            (
            $page.ParsedHtml.body.getElementsByTagName('div') |
            ? {$_.className -eq "postcode-lead"} | 
            Select-Object -First 1
            ).
                getElementsByTagName('h3') | 
                Select-Object -ExpandProperty outerText |
                ? {$_.trim() -match "(?:Current alert level (?:in )*) *([a-zA-Z ]*?) *(MEDIUM$|VERY HIGH$|HIGH$|STAY AT HOME$|NATIONAL RESTRICTIONS$|PROTECTION LEVEL [0-4]$|Welsh restrictions apply.$|Northern Irish restrictions apply.$)"} ){
            $tier = $matches[2]
            $localAuthority = $matches[1]
            }

       
    [pscustomobject]@{
    msoa = $MSOA
    localAuthority = $localAuthority
    covidTier = $tier
    }
    }catch{
    Write-Warning "Problem with: $postCode"
    }
}
END{
}
# LA10 5AU England
# SW1A 2AA
# NE46 3NB
# SY23 4LU Wales
# BT2 7AF Northern Ireland
# EH4 2GH Scotland