how to validation JSON as key from String param in power shell - powershell

Question

I want to validate from PowerShell using this JSON
{
"Customer": {
"OnSubscription": true,
"Name": "John",
"Surname": "Smith"
},
"Data": {
"Basket": [
"apples",
"pears",
"oranges",
"strawberries"
]
}
}
here is my script
$json = Get-Content .\basket.json | ConvertFrom-Json
param(
[string[]]$param = "Customer"
)
Write-Host $param
if ($param -eq $json) {
Write-Host "Valid Customer Key"}
else
{
$message = "Invalid Customer Key"
Write-Host $message
}
$output = ($json.$param.PSObject.Properties.Name | ForEach-Object {
"$_={0}" -f $json.$param.$_
}) -join "`n"
$Path2 = ".\output\env"
$output | Out-File $Path2
The parameter create for checking the JSON, is there a valid customer key or not?
For example, input param ABC, but in JSON there is no ABC. So its showing message like "Invalid Customer Key". When condition is valid customer key, Its showing message like "Valid Customer Key"
but the result I always got "Invalid Customer Key"
Is something wrong with if condition?

Answer 1

You might want to clean your code up a bit and dont think with such complexity. Your Task is quite easy, I have mocked something up for you.
loadMe.Json
{
"content":[
{
"Customer":{
"OnSubscription":true,
"Name":"John",
"Surname":"Smith"
},
"Data":{
"Basket":[
"apples",
"pears",
"oranges",
"strawberries"
]
}
},
{
"Customer":{
"OnSubscription":true,
"Name":"John2",
"Surname":"Smith"
},
"Data":{
"Basket":[
"apples",
"pears",
"oranges",
"strawberries"
]
}
},
{
"Customer":{
"OnSubscription":true,
"Name":"John3",
"Surname":"Smith"
},
"Data":{
"Basket":[
"apples",
"pears",
"oranges",
"strawberries"
]
}
}
]
}
Step One - Get Content of Json into an Object
$myJson = Get-Content -Path (Join-Path $PSScriptRoot '\loadMe.json') | ConvertFrom-json
Step Two - Loop through content and match names
foreach($item in $myJson.content) {
if($item.Customer.Name -eq $myOtherVariable) {
...
}
}
The following code gives the wanted output, task accomplished
$myJson = Get-Content -Path (Join-Path $PSScriptRoot '\loadMe.json') | ConvertFrom-json
foreach($item in $myJson.content) {
Write-Host $item.Customer.Name
}
Output -->
John
John2
John3