#!/usr/bin/env pwsh

<# TODO
.SYNOPSIS
    Takes a screenshot and puts the URL into the clipboard
.DESCRIPTION
    Uses grim and slurp to create a screenshot and uploads it into a matrix content repository.
    A GETable URL is placed into the clipboard via wl-copy and optionally sent to the specified room.
.NOTES
    Example config at $HOME/.config/matrix-screenshot.ps1:

    ```
    $roomId = '!XpxHNLnPsnNEbScyeh:imninja.net'
    $accessToken = 'NotaReALaCceSSTOk3n'
    $homeserverUrl = 'https://imninja.net'
    ```
#>
[CmdletBinding()]
param (
    # Takes a fullscreen screenshot instead of selecting an area.
    [switch]
    $Fullscreen
)

# import config
$config = Import-Clixml (Join-Path $env:HOME '.config/nextcloud-screenshot.xml')


$tmp = New-TemporaryFile
$tmpPath = $tmp.FullName
$webpPath = $tmpPath -replace 'tmp$','webp'

if ($Fullscreen) {
    grim $tmpPath
} else {
    grim -g $(slurp) $tmpPath
}
if ((Get-Item $tmpPath).Length -eq 0) {
    Remove-Item $tmpPath
    throw ('Temp file "{0}" is empty' -f $tmpPath)
}

magick $tmpPath $webpPath
Remove-Item $tmpPath

if ((Get-Item $webpPath).Length -eq 0) {
    Remove-Item $webpPath
    throw ('WebP file "{0}" is empty' -f $webpPath)
}



$webpName = (Split-Path -Leaf $webpPath)
$nextcloudPath = $config.Path + '/' +  $webpName

$uploadSplat = @{
    Authentication = 'Basic'
    Credential = $config.Credential
    Method = 'Put'
    Uri = '{0}/remote.php/dav/files/{1}/{2}' -f $config.BaseUrl,$config.Credential.UserName,$nextcloudPath
    InFile = $webpPath
}
try {
    Invoke-RestMethod @uploadSplat
} catch {
    Remove-Item $webpPath
    throw $_
}

$shareSplat = @{
    Authentication = 'Basic'
    Credential = $config.Credential
    Header = @{
        'OCS-APIRequest' = 'true' # https://docs.nextcloud.com/server/27/admin_manual/configuration_user/user_provisioning_api.html
    }
    Method = 'Post'
    Uri = $config.BaseUrl + '/ocs/v2.php/apps/files_sharing/api/v1/shares'
    Body = @{
        path = $nextcloudPath
        shareType = 3 # public link
        permissions = 1 # read
    }
}
try {
    $share = Invoke-RestMethod @shareSplat
} catch {
    Remove-Item $webpPath
    throw $_
}
$share.ocs.data.url + '/preview' | wl-copy --trim-newline
notify-send 'Screenshot URL in clipboard' --expire-time=1000

Remove-Item $webpPath