Updates the Windows Terminal profiles.json file with all the schemes from https://github.com/mbadolato/iTerm2-Color-Schemes/blob/master/windowsterminal

Add-WindowsTerminalSchemes.ps1

# Path to the profile when installed from the Windows Store.
$profilePath = "C:\Users\$Env:Username\AppData\Local\Packages\Microsoft.WindowsTerminal_8wekyb3d8bbwe\LocalState\profiles.json"


# Remove existing comments from the profiles.json file.
$profile = (Get-Content $ProfilePath) -replace '(?m)(?<=^([^"]|"[^"]*")*)//.*' -replace '(?ms)/\*.*?\*/' | Out-String | ConvertFrom-Json

$backupProfilePath = "$home\Documents\WindowsTerminalprofiles.json"
Write-Verbose "Backing up profile to $backupProfilePath"
$profile | ConvertTo-Json | Set-Content $backupProfilePath


# Grab all schemes from github
Function Get-WtScheme {
    <#
    .Description
    Returns color schemes from
    https://github.com/mbadolato/iTerm2-Color-Schemes/blob/master/windowsterminal
    .Parameter Url
    Url to the iTerm2 project.
    .Parameter Theme
    Specify the name of the theme that you want returned. All themes are returned by default
    .Example
    PS> Get-WtTheme
    Returns all available themes
    .Example
    PS> Get-WtTheme -Filter 'atom.json'
    Retrieves the atom.json theme.
    .Link
    https://github.com/mbadolato/iTerm2-Color-Schemes/blob/master/windowsterminal/
    .Link link to blogpost
    #>
    [cmdletbinding()]
    param(
        [string]
        $Theme = '*',

        [string]
        $Url = 'https://github.com/mbadolato/iTerm2-Color-Schemes/tree/master/windowsterminal'
    )

    $page = Invoke-WebRequest $Url -UseBasicParsing

    $links = $page.Links | Where-Object title -like "$Theme.json"

    Write-Verbose "$($links.count) links found matching $Theme"

    foreach ($link in $links) {
        # Use the raw url so raw results can be returned and output
        $base = 'https://raw.githubusercontent.com'
        $href = $link.href

        $rawUrl = $base + $href
        $rawUrl = $rawUrl.replace('/blob', '')

        Invoke-RestMethod $RawUrl
    }
}

$schemes = Get-WtScheme

Write-Verbose "We have found $($schemes.count) schemes. Great Success!!"

# This object will contain schemes from our profile and all of the schemes that we just got.
$combinedProperties = [pscustomobject]@()

# loop through the original scheme and export the properties
foreach ($scheme in ($profile.schemes)) {

    # Avoid adding duplicate schemes.
    if (-not ($combinedProperties.name -like $scheme.name)) {
        $combinedProperties += $scheme
    }
}

# Add new schemes
foreach ($scheme in $schemes) {

    if (-not ($combinedProperties.name -like $scheme.name)) {
        $combinedProperties += $scheme
    }
}

# Remove the count property from appearing in our json output.
# This only persists for the session
# See https://stackoverflow.com/questions/20848507/why-does-powershell-give-different-result-in-one-liner-than-two-liner-when-conve
Remove-TypeData System.Array -ErrorAction SilentlyContinue

$updatedSchemeObj = [pscustomobject]($combinedProperties)

$profile.schemes = $updatedSchemeObj

Write-Verbose "Updating profile.json with new schemes"
$profile |
ConvertTo-Json -Depth 8 |
Set-Content $profilePath

Awesome script! Wanted to let people know that there may be a few edits to make to this script before running it. First, I installed Windows Terminal from the Microsoft store and it was installed to the LocalState directory instead of RoamingState. Second, run this script in Powershell, not PSCore.

I've updated the gist so that it defaults to LocalState for the profile.json file. When I wrote the script I was using a computer that had Windows Terminal installed from Chocolatey. Thanks for the feedback!

Great Job. But I think should remove comments before ConvertFrom-Json in line 5 with:

$profile = (Get-Content $ProfilePath) -replace '(?m)(?<=^([^"]|"[^"]*")*)//.*' -replace '(?ms)/\*.*?\*/' | Out-String | ConvertFrom-Json

Hi and thanks for providing this!
I'm getting an error after pasting this in the terminal and running it:

ConvertFrom-Json : Invalid JSON primitive: .
At line:6 char:39
+ $profile = Get-Content $ProfilePath | ConvertFrom-Json
+                                       ~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [ConvertFrom-Json], ArgumentException          
    + FullyQualifiedErrorId : System.ArgumentException,Microsoft.PowerShell.Commands.ConvertFromJsonCommand

I've also tried saving this as a .ps1 script and running it in classic PowerShell terminal as an admin, to no avail. Any help would be appreciated.

Thanks for that, @liuwenzhuang. I have updated the script to reflect that.

Paul try running the script in it's current form. It will remove any comments that you have added to your profiles.json file.

@AndrewPla, thank you! It worked, I now have all the themes in my profiles.json.