push notification curl

push.sh

#!/bin/bash
# to execute it first chmod +x push.sh

deviceToken=<device token id from device did receive token>

authKey="./AuthKey_<auth_key>.p8"
authKeyId=<auth_key>
teamId=<team id>
bundleId=<bundle id>
endpoint=https://api.development.push.apple.com

read -r -d '' payload <<-'EOF'
{
"aps": {
    "badge": 2,
    "sound" : "default",
    "category": "mycategory",
    "alert": {
        "title": "my title bla",
        "subtitle": "my subtitle",
        "body": "my body text message"
    }
},
"custom": {
    "mykey": "myvalue"
    }
}
EOF

# --------------------------------------------------------------------------

base64() {
    openssl base64 -e -A | tr -- '+/' '-_' | tr -d =
}

sign() {
    printf "$1"| openssl dgst -binary -sha256 -sign "$authKey" | base64
}

time=$(date +%s)
header=$(printf '{ "alg": "ES256", "kid": "%s" }' "$authKeyId" | base64)
claims=$(printf '{ "iss": "%s", "iat": %d }' "$teamId" "$time" | base64)
jwt="$header.$claims.$(sign $header.$claims)"

curl --verbose \
--header "content-type: application/json" \
--header "authorization: bearer $jwt" \
--header "apns-topic: $bundleId" \
--data "$payload" \
$endpoint/3/device/$deviceToken