CURL script to powershell - json

Question

I am trying to convert curl to powershell with Invoke-RestMethod for onesignal push
the script that is used for onesignal:
curl --include \
--request POST \
--header "Content-Type: application/json; charset=utf-8" \
--header "Authorization: Basic YOUR_REST_API_KEY" \
--data-binary "{\"app_id\": \"YOUR_APP_ID\",
\"contents\": {\"en\": \"English Message\"},
\"included_segments\": [\"Subscribed Users\"]}" \
https://onesignal.com/api/v1/notifications
I have tried with following example which I was using for pushover but without success.
$uri = "https://onesignal.com/api/v1/notifications"
$parameters = #{
app_id = 'YOUR_APP_ID'
contents = "en: English Message"
included_segments = 'Subscribed Users'
data = 'foo:bar'
}
$parameters | Invoke-RestMethod -Uri $uri -Method Post
I have used this powershell script for pushover which worked fine, but now I want to move to onesignal and I have problems with where/how to put rest api key inside with already using app_id to push messages forward to users.
The code is snatched from: https://documentation.onesignal.com/v5.0/reference#section-example-code-create-notification
I hope that someone can assist me with this problem.
Regards

Answer 1

Try the following
$basicAuth = "Basic REST_API_KEY";
$headers = #{ Authorization = $basicAuth };
$uri = "https://onesignal.com/api/v1/notifications";
$body = #{ app_id = 'YOUR_APP_ID'; contents = #{ en = 'English Message' }; included_segments = #('Subscribed Users'); data = #{ foo = 'bar' }} | ConvertTo-Json;
Invoke-RestMethod -Method Post -Uri $uri -Headers $headers -ContentType "application/json; charset=utf-8" -Body ([System.Text.Encoding]::UTF8.GetBytes($body));

Answer 2

I have no idea how this endpoint works but it should work something like this:
$key = "Basic RESTAPIKEY"
$headers = #{}
$headers.Add("Authorization",$Key)
$headers.Add("Content-Type","application/json; charset=utf-8")
$uri = "https://onesignal.com/api/v1/notifications"
$parameters = #{
app_id = 'YOUR_APP_ID'
contents = "en: English Message"
included_segments = 'Subscribed Users'
data = 'foo:bar'
} | ConvertTo-Json
Invoke-RestMethod -Uri $uri -Method Post -Headers $headers -Body ([System.Text.Encoding]::UTF8.GetBytes($parameters)) -ContentType "application/json"
If the data-binary part is sent with PowerShell you could also use the -InFile parameter from Invoke-RestMethod.
If just read a little at the link you posted and think the body part should be like the following:
$parameters = #{
app_id = "5eb5a37e-b458-11e3-ac11-000c2940e62c"
included_segments = "Array of active users"
data = #{
foo = "bar"
}
contents = #{
en = "English Message"
}
} | ConvertTo-JSON