Fetch recently played episodes from an Overcast.fm full OPML-Export. Then, return those episodes as JSON.

overcast-recently-played.ps1

param (
    # path the to a file with the response of https://overcast.fm/account/export_opml/extended
    [string]$inputFileName = "overcast_all.opml",
    [bool]$playedOnly = $true,
    # 0: title only; 1: adds user manipulation data; 2: adds publishing data; 3: adds overcast metadata
    [int]$verbosity = 1
)
$ompl = [xml](Get-Content $inputFileName)

$recentChanges = (New-Object System.Collections.ArrayList)

foreach ($podcast in @($ompl.SelectNodes(".//*[@type='rss']"))) {
    $podcastTitle = $podcast.title
    $recentChangesInPodcast = New-Object PSCustomObject
    $recentChangesInPodcast | Add-Member NoteProperty "Title" $podcastTitle
    $recentChangesInPodcast | Add-Member NoteProperty "Episodes" (New-Object System.Collections.ArrayList)
    $touchedEpisodes = @(
        $podcast.outline |
        Where-Object {
            $_.userUpdatedDate -ne $null -and
            ([DateTime]::NOW - [DateTime]($_.userUpdatedDate)).TotalDays -lt 6 
        }
    )
    
    if ($playedOnly) {
        $touchedEpisodes = $touchedEpisodes | Where-Object { $_.played -eq 1 }
    }

    foreach ($episode in $touchedEpisodes) {
        $episodeTitle = $episode.title
        $publishedAt = $episode.pubDate
        $userUpdatedDate = $episode.userUpdatedDate
        $progress = $episode.progress
        $url = $episode.url
        $overcastUrl = $episode.overcastUrl
        $overcastId = $episode.overcastId
        $isPlayed = $episode.played -eq "1"
        $isDeleted = $episode.userDeleted -eq "1"

        $episodeObject = New-Object PSCustomObject
        $episodeObject | Add-Member NoteProperty "Title" $episodeTitle
        if ($verbosity -gt 0) {
            $episodeObject | Add-Member NoteProperty "UserUpdatedDate" $userUpdatedDate
            $episodeObject | Add-Member NoteProperty "Progress" $progress
            $episodeObject | Add-Member NoteProperty "IsPlayed" $isPlayed
            $episodeObject | Add-Member NoteProperty "IsDeleted" $isDeleted
        }
        if ($verbosity -gt 1) {
            $episodeObject | Add-Member NoteProperty "PublishedAt" $publishedAt
            $episodeObject | Add-Member NoteProperty "URL" $url
        }
        if ($verbosity -gt 2) {
            $episodeObject | Add-Member NoteProperty "OvercastUrl" $overcastUrl
            $episodeObject | Add-Member NoteProperty "OvercastId" $overcastId
        }

        $recentChangesInPodcast.Episodes.Add($episodeObject) | Out-Null
    }
    
    if ($recentChangesInPodcast.Episodes.count -gt 0) {
        $recentChanges.Add($recentChangesInPodcast) | Out-Null
    }
}

$json = ConvertTo-Json $recentChanges -Depth 5

return $json