How to Pass User Input to a JSON File using powershell-CodePudding

I am creating a PowerShell script using Convert To-JSON cmd and i achieved that using below

 $body = @{
        devices = @(
            @{ 
                credentials = @(
                    @{
                        label = 'username'
                        value = 'myname'
                        sensitive = 'false'
                    },
                    @{
                        label = 'Password'
                        value = 'Password@!'
                        sensitive = 'true'
                    }
                )
                services = @(
                   @{
                        name = 'RDP'
                        url = 'https://192.168.1.6/?pauth=[proxy_token]&data=[connection:username-rdp]'
                        instructor = 'false'
                }
                connections = @(
                    @{
                        id = 'myname-rdp'
                        protocol = 'rdp'
                        hostname = "192.168.1.6"
                        port ='3389'
                    }
                    )
                   Parameters = @( 
                   @{
                        name = 'username'
                        value = 'myname'
                    },
                    @{
                        name = 'password'
                        value = 'Password@!'
                    }
                )
            }
        )
    }

i am converting the above powershell to JSON File($body | ConvertTo-Json -Depth 4) and i would like to replace pass the arguments for the Username and IP Address and store it with the username.json every time while converting to JSON.

i have tried the Read-host to get the input from the user but i am facing difficulty to pass that input before printing the output.

CodePudding user response：

For the IP address, you can set the new value by defining the parameter using standard dot-notation.

In the case of username, because Parameters is an array with duplicate object names, doing $body.devices.Parameters.name would return both the username and password objects, so you can filter the array to only select the object where the name is username

$inputUsername = Read-Host "Input Username"
$inputIpAddress = Read-Host "Input IP address"

( $body.devices.Parameters | Where-Object { $_.name -eq 'username' } ).value = $inputUsername
$body.devices.connections.hostname = $inputIpAddress

$body | ConvertTo-Json -Depth 4

CodePudding user response：

As an interpreted language, PowerShell allows you to construct literals based on values that are determined at runtime.

Therefore, simply place your hashtable literal (@{ ... }) after your Read-Host calls, and reference the variables in which you store the Read-Host responses in that literal.

A simplified example:

# Simulate two Read-Host calls (hard-code sample values).
$foo = 42
$bar = 'hi'

# Now define the hashtable literal and reference the variables assigned to above.
@{
  devices = @{
    foo = $foo
    bar = $bar
  }
}

Piping the above to ConvertTo-Json -Depth 4 yields:

{
  "devices": {
    "foo": 42,
    "bar": "hi"
  }
}

Note how the values of $foo and $bar were incorporated. You could even use the same technique in a loop, provided the hashtable literal is also in the loop body (after setting the variables it references).