get-githubmaintainers.ps1

param(
    [parameter()]
    [string]
    $org = 'PowerShell'
)

# PowerShell Team members
$exclude = @(
    'adityapatwardhan'
    'alerickson'
    'anamnavi'
    'andyleejordan'
    'anmenaga'
    'daxian-dbw'
    'JamesWTruher'
    'maertendMSFT'
    'mgreenegit'
    'msftgits'
    'sdwheeler'
    'seeminglyscience'
    'SteveL-MSFT'
    'StevenBucher98'
    'SydneyhSmith'
    'tgauth'
    'theJasonHelmick'
    'TravisEz13'
    'vthiebaut10'
)

function Query-GitHub($query) {
    $body = @{query=$query} | ConvertTo-Json
    $data = Invoke-RestMethod https://api.github.com/graphql -Authentication OAuth -Token (Get-Secret GitHub) -Body $body -Method Post
    if ($null -ne $data.errors) {
        $data.errors
        throw $data.errors.message
    }
    $data.data
}

# first get all repositories for the org
$cursor = 'null'

$hasNextPage = $true
while ($hasNextPage) {
    $repositoryQuery = @"
    query {
        organization(login: "$org") {
            repositories(first: 100, after: $cursor) {
                nodes {
                    name
                    id
                }
                pageInfo {
                    endCursor
                    hasNextPage
                }
            }
        }
    }
"@

    $repositoryData = Query-GitHub -query $repositoryQuery
    $pageInfo = $repositoryData.organization.repositories.pageInfo
    $hasNextPage = $pageInfo.hasNextPage -eq 'true'
    $cursor = "`"$($pageInfo.endCursor)`""
    foreach ($repo in $repositoryData.organization.repositories.nodes) {
        Write-Progress -Activity "Repository: $($repo.name)"
        $query = @"
    query {
        repository(owner: "$org", name: "$($repo.name)") {
            collaborators {
                edges {
                    permission
                }
                nodes {
                    login
                    name
                    company
                }
            }
        }
    }
"@
        $data = Query-GitHub -query $query
        $collaborators = $data.repository.collaborators
        for ($i = 0; $i -lt $collaborators.nodes.count; $i++) {
            $permission = $collaborators.edges[$i].permission
            $user = $collaborators.nodes[$i]
            if (@('ADMIN', 'MAINTAIN', 'WRITE') -contains $permission -and $exclude -notcontains $user.login) {
                [pscustomobject]@{
                    name = $user.name
                    login = $user.login
                    company = $user.company
                    permission = $permission
                    repository = $repo.name
                }
            }
        }
    }
}