#######################################################################################################################
#
# Author: Nayrk
# Date: 12/28/2018
# Last Updated: 02/03/2021
# Purpose: To download all Blink videos locally to the PC. Existing videos will be skipped.
# Output: All Blink videos downloaded in the following directory format.
#         Default Location Desktop - "C:\temp\Blink"
#         Sub-Folders - Blink --> Home Network Name --> Camera Name #1
#                                                   --> Camera Name #2
#
# Notes: You can change anything below this section.
# Credits: https://github.com/MattTW/BlinkMonitorProtocol
# Fixed By: colinreid89 on 05/15/2020
# Fixed By: tyuhas on 02/03/2021
# Fixed By: ttteee90 on 03/19/2021
# Updates: Added infinite loop to re-run every 30 minutes as a keep alive to bypass pin prompt from Blink/Amazon
#          03/22/2021 - Cleaned up the code and added more debug messages. Added try/catch on invalid pin.
#######################################################################################################################

# Change saveDirectory directory if you want the Blink Files to be saved somewhere else, default is user Desktop
#$saveDirectory = "C:\Users\$env:UserName\Desktop"
$saveDirectory = "C:\temp\Blink"

# Blink Credentials. Please fill in!
# Please keep the quotation marks "
$email = "Your Email Here"
$password = "Your Password Here"

# Blink's API Server, this is the URL you are directed to when you are prompted for IFTTT Integration to "Grant Access"
# You can verify this yourself to make sure you are sending the data where you expect it to be
$blinkAPIServer = 'rest-prod.immedia-semi.com'

# Use this server below if you are in Germany. Remove the # symbol below.
# $blinkAPIServer = 'prde.immedia-semi.com'

#######################################################################################################################
#
# Do not change anything below unless you know what you are doing or you want to...
#
#######################################################################################################################

if($email -eq "Your Email Here") { Write-Host 'Please enter your email by modifying the line: $email = "Your Email Here"'; pause; exit;}
if($password -eq "Your Password Here") { Write-Host 'Please enter your password by modifying the line: $password = "Your Password Here"'; pause; exit;}

# Headers to send to Blink's server for authentication
$headers = @{
    "Host" = "$blinkAPIServer"
    "Content-Type" = "application/json"
}

# Credential data to send
$body = @{
    "email" = "$email"
    "password" = "$password"
	"unique_id" = "00000000-1111-0000-1111-00000000000"
} | ConvertTo-Json

# Login URL of Blink API
$uri = "https://$blinkAPIServer/api/v5/account/login"

# Authenticate credentials with Blink Server and get our token for future requests
$response = Invoke-RestMethod -UseBasicParsing $uri -Method Post -Headers $headers -Body $body
if(-not $response){
    echo "Invalid credentials provided. Please verify email and password."
    pause
    exit
} else {
    echo "Authenticated with Blink successfully. Please check your email or SMS/Text on your phone for the pin."
}

# Get the object data
$region = $response.account.tier   #region.tier
$authToken = $response.auth.token
$accountID = $response.account.account_id
$userid = $response.account.user_id

# Fix provided by @tyuhas 
$clientID = $response.account.client_id

#echo $response
#echo $region
#echo $authToken
#echo $accountID
#echo $clientID



$pin = Read-Host -Prompt 'Input PIN'
$uri = 'https://rest-'+ $region +".immedia-semi.com/api/v4/account/"+ $accountID +'/client/'+ $clientID +"/pin/verify"
#$uri = "https://rest-prod.immedia-semi.com/api/v4/account/"+ $accountID +'/client/'+ $clientID +"/pin/verify"
#Headers to send for PIN authentication
$pin_headers = @{
   "CONTENT-TYPE" = "application/json"
   "TOKEN-AUTH" = $authToken
}



#PIN goes in the body
$pin_body = @{
    "pin" = $pin
} | ConvertTo-Json

#Echo "URI:" $uri

# Added try/catch to catch the invalid pin
try {
    $pin_response = Invoke-RestMethod -UseBasicParsing $uri -Method Post -Headers $pin_headers -Body $pin_body
} catch {
    echo "Invalid Pin response. Please re-run the script again and use the same pin within the first minute."
    pause
    exit
}

while (1)
{
    echo "Script will re-run every 30 minutes as a keep alive to Blink server."
	#echo $response
	#echo $region
	#echo $authToken
	#echo $accountID

	# Headers to send to Blink's server after authentication with our token
	$headers = @{
		# "Host" = "$blinkAPIServer"
		"TOKEN_AUTH" = "$authToken"
	}

	# Get list of networks
	#$uri = "https://rest-u017.immedia-semi.com/api/v1/camera/usage"
	$uri = 'https://rest-'+ $region +".immedia-semi.com/api/v1/camera/usage"
	#echo $uri

	# Use old endpoint to get list of cameras with respect to network id    
    $sync_units = Invoke-RestMethod -UseBasicParsing $uri -Method Get -Headers $headers
    
	foreach($sync_unit in $sync_units.networks)
	{
		$network_id = $sync_unit.network_id
		$networkName = $sync_unit.name
		
		foreach($camera in $sync_unit.cameras){
			$cameraName = $camera.name
			$cameraId = $camera.id
			$uri = 'https://rest-'+ $region +".immedia-semi.com/network/$network_id/camera/$cameraId"
			
			
			$camera = Invoke-RestMethod -UseBasicParsing $uri -Method Get -Headers $headers
			$cameraThumbnail = $camera.camera_status.thumbnail

			# Create Blink Directory to store videos if it doesn't exist
			$path = "$saveDirectory\Blink\$networkName\$cameraName"
			if (-not (Test-Path $path)){
				$folder = New-Item  -ItemType Directory -Path $path
			}

			# Download camera thumbnail
			$thumbURL = 'https://rest-'+ $region +'.immedia-semi.com' + $cameraThumbnail + ".jpg"
			$thumbPath = "$path\" + "thumbnail_" + $cameraThumbnail.Split("/")[-1] + ".jpg"
			
			# Skip if already downloaded
			if (-not (Test-Path $thumbPath)){
				echo "Downloading thumbnail for $cameraName camera in $networkName."
				Invoke-RestMethod -UseBasicParsing $thumbURL -Method Get -Headers $headers -OutFile $thumbPath
			}
		}
	}

	$pageNum = 1

	# Continue to download videos from each page until all are downloaded
	while ( 1 )
	{
		# List of videos from Blink's server
		# $uri = 'https://rest-'+ $region +'.immedia-semi.com/api/v2/videos/page/' + $pageNum
		
		# Changed to use old endpoint
		#$uri = 'https://rest-'+ $region +'.immedia-semi.com/api/v2/videos/changed?since=2016-01-01T23:11:21+0000&page=' + $pageNum

		# Changed endpoint again
		$uri = 'https://rest-'+ $region +'.immedia-semi.com/api/v1/accounts/'+ $accountID +'/media/changed?since=2015-04-19T23:11:20+0000&page=' + $pageNum

		# Get the list of video clip information from each page from Blink
		$response = Invoke-RestMethod -UseBasicParsing $uri -Method Get -Headers $headers
		
		# No more videos to download, exit from loop
		if(-not $response.media){
			break
		}

		# Go through each video information and get the download link and relevant information
		foreach($video in $response.media){
			# Video clip information
			$address = $video.media
			$timestamp = $video.created_at
			$network = $video.network_name
			$camera = $video.device_name
			$camera_id = $video.camera_id
			$deleted = $video.deleted
			if($deleted -eq "True"){
				continue
			}
		   
			# Get video timestamp in local time
			$videoTime = Get-Date -Date $timestamp -Format "yyyy-MM-dd_HH-mm-ss"

			# Download address of video clip
			$videoURL = 'https://rest-'+ $region +'.immedia-semi.com' + $address
			
			# Download video if it is new
			$path = "$saveDirectory\Blink\$network\$camera"
			$videoPath = "$path\$videoTime.mp4"
			if (-not (Test-Path $videoPath)){
				try {
					Invoke-RestMethod -UseBasicParsing $videoURL -Method Get -Headers $headers -OutFile $videoPath 
					$httpCode = $_.Exception.Response.StatusCode.value__        
					if($httpCode -ne 404){
						echo "Downloading video for $camera camera in $network."
					}   
				} catch { 
					# Left empty to prevent spam when video file no longer exists
					echo $httpCode
				}
			}
		}
		$pageNum += 1
	}
	echo "All new videos and thumbnails downloaded to $saveDirectory\Blink\"
	echo "Sleeping for 30 minutes before next run..."
	# Sleep for 30 minutes
	Start-Sleep -S 1800
}