$URI = "https://unifi.freifunk-troisdorf.de/v2.1/devices"
$headers = @{
  "x-auth-token" = ""
}

$devices = (Get-Content -Path .\devices.json | ConvertFrom-Json).devices

$request  = Invoke-Restmethod -URI $URI -Method GET -Headers $headers

# Get timestamp
$timestamp = Get-Date -UFormat "%Y-%m-%dT%R:00%Z00"
$timeDiffFromUTC = Get-Date -UFormat "%Z00"



# create empty nodes array
$nodes = @()
$links = @()

# loop through each device
foreach ($device in $devices) {
  $dev = $request | Where-Object { $_.identification.mac -eq $device.mac}
  # implement function that reports not found mac addresses in API
  
  ## Get info from API
  $firstseen = Get-Date -Date $dev.overview.createdAt -UFormat "%Y-%m-%dT%R:00$timeDiffFromUTC"
  $lastseen = Get-Date -Date $dev.overview.lastSeen -UFormat "%Y-%m-%dT%R:00$timeDiffFromUTC"
  if ($dev.overview.status -eq "active") {
    $is_online = $true
  } else {
    $is_online = $false
  }
  
  $uptime = Get-Date -Date $dev.identification.started -UFormat "%Y-%m-%dT%R:00$timeDiffFromUTC"
  $mac = $dev.identification.mac
  $node_id = $mac.replace(":","")
  
  
  ## End of API call 1
  
  
  # get more info from each device
  ## Get more info from second API call
  $id = $dev.identification.id
  $URI = "https://unifi.freifunk-troisdorf.de/v2.1/devices/erouters/$id"
  $details = Invoke-Restmethod -URI $URI -Method GET -Headers $headers
  
  $loadavg = $details.overview.cpu / 100
  $memory_usage = $details.overview.ram / 100
  
  $addresses = @()
  # cut away network mask
  $addresses += $details.ipAddress.split("/")[0]
  
  $hostname = "[RiFu] " + $details.identification.name
  
  $firmware = @{
    base = "Ubiquiti - Stock"
    release = $details.firmware.current
  }
  $model = $details.identification.model
  
  ## End of API call 2
  
  ## API Call 3 (Links)
  $URI = "https://unifi.freifunk-troisdorf.de/v2.1/devices/airmaxes/$id/stations"
  $airmaxes = Invoke-Restmethod -URI $URI -Method GET -Headers $headers
  $remoteMAC = $airmaxes.deviceIdentification.mac
  
  
  # check if remote mac address is part of our published network
  if ($devices | Where-Object -Property mac -EQ $remoteMAC) {
    # this is a public link, let's advertise it
    if (!($links | Where-Object -Property source_addr -EQ $remoteMAC)) {
      # this link does not exist already, let's add it
      $links += @{
        type = "wifi"
        source = $mac.replace(":","")
        target = $remoteMAC.replace(":","")
        source_tq = $airmaxes.statistics.linkScore
        target_tq = $airmaxes.statistics.linkScore
        source_addr = $mac
        target_addr = $remoteMAC
      }
    }
  }
  
  ## Get info from json file (static)
  $currentDev = $devices | Where-Object -Property mac -EQ $dev.identification.mac
  $gateway_nexthop = $currentDev.gateway_nexthop
  $gateway = $currentDev.gateway
  $domain = $currentDev.domain
  $location = $currentDev.location

  # assemble all into nodes an links
  $nodes += @{
    firstseen = $firstseen
    lastseen = $lastseen
    is_online = $is_online
    is_gateway = $false
    clients = 0
    clients_wifi24 = 0
    clients_wifi5 = 0
    clients_other = 0
    rootfs_usage = 0
    loadavg = $loadavg
    memory_usage = $memory_usage
    uptime = $uptime
    gateway_nexthop = $gateway_nexthop
    gateway = $gateway
    location = $location
    node_id = $node_id
    mac = $mac
    addresses = $addresses
    domain = $domain
    hostname = $hostname
    owner = "Freifunk Rhein-Sieg"
    firmware = $firmware
    autoupdater = @{
      enabled = $false
      branch = "stable"
    }
    nproc = 1
    model = $model
  }
}


# create file output
$output = @{
  timestamp = $timestamp
  nodes = $nodes
  links = $links
}

$output | ConvertTo-Json -Depth 4 | Out-File example.json