dynv6 now defaults to config, discord displays error message on error.

Discord.ps1

@@ -14,7 +14,7 @@
 #
 ### Example
 # Run from CMD or Batch file to transmit the message to Discord:
-# CMD> powershell.exe -File .\Discord.ps1 -message "Here is some content to send to Discord."
+# CMD> pwsh -File .\Discord.ps1 -message "Here is some content to send to Discord."
 # or pipeline in powershell:
 # PS1> echo "Here is some content to send to Discord" | .\Discord.ps1
 #
@@ -27,9 +27,9 @@
 
 param (
     [parameter (ValueFromPipeline = $true)] [string[]] $message,
-    [string] $distinct,
-    [string] $webhook,
-    [string] $botName
+    [string] $distinct = "",
+    [string] $webhook = "",
+    [string] $botName = ""
 )
 begin {
     $chunk = ""
@@ -66,6 +66,7 @@ end {
     # complete last chunk, by queuing it up
     $chunks += $chunk
 
+    # if distinct, load previous message to check for duplicate message
     if ($distinct) {
         $distinctFile = "$PSScriptRoot\\distinct\\$distinct.msg"
         if (Test-Path -Path $distinctFile) {

Dynv6.ps1

@@ -4,18 +4,19 @@
 #
 # Windows Powershell Script for updating Dynamic DNS on Dynv6.com using the
 # RESTful interface. Use the windows task schedualer to automatically run.
+# Will use config.ps1 for defaults, if available.
 #
 # Script Parameters:
-# -zone         <string>        DNS Zone (domain name) to update.
-# -token        <string>        HTTP Token, see: https://dynv6.com/keys#token
+# [-zone]       <string>        Optional, DNS Zone (domain name) to update, default to config.
+# [-token]      <string>        Optional, HTTP Token, see: https://dynv6.com/keys#token defaults to config.
 # [-netmask]    <string>        Optional, IPv6 netmask, defaults to 128.
-# [-logFile]    <string|null>   Optional, filename to log to, defaults to "~/.dynv6.log", use null to disable logging.
+# [-logFile]    <string|null>   Optional, filename to log to, defaults to "~\.dynv6.log", use $null to disable logging.
 # [-ipv4]       <string>        Optional, IPv4 override, to skip resolving.
 # [-ipv6]       <string>        Optional, IPv6 override, to skip resolving.
 #
 ### Example
 # Run from CMD or Batch file to IPv4 and IPv6 with automatic lookup:
-# powershell.exe -File ./Dynv6.ps1 -zone "ExampleDomain.com" -token "XXXXXX"
+# CMD> pwsh -File .\Dynv6.ps1 -zone "ExampleDomain.com" -token "XXXXXX"
 #
 ###################
 # Copyright 2020 Joe Herbert ( djneonc@gmail.com )
@@ -41,14 +42,27 @@
 
 # we need zone and token, we also accept, netmask, and overrides
 param(
-    [string] $zone = $(throw "-zone is required"),
-    [string] $token = $(throw "-token is required"),
+    [string] $zone = "",
+    [string] $token = "",
     [string] $netmask = "128",
     [object] $logFile = "$env:USERPROFILE\\.dynv6.log",
     [string] $ipv4 = "",
     [string] $ipv6 = ""
 )
 
+# load in defaults from config
+$configFile = "$PSScriptRoot\\Config.ps1"
+if (Test-Path -Path $configFile) {
+    . $configFile
+
+    if ( ! $zone) {
+        $zone = $DYNV6_ZONE
+    }
+    if ( ! $token) {
+        $token = $DYNV6_TOKEN
+    }
+}
+
 # we store ip addresses in files, so we only update when there is a change
 $file4 = "$env:USERPROFILE\\.dynv6.addr4"
 $file6 = "$env:USERPROFILE\\.dynv6.addr6"
@@ -56,13 +70,9 @@ $file6 = "$env:USERPROFILE\\.dynv6.addr6"
 # load existing ip addresses, when available
 if (Test-Path -Path $file4) {
     $old4 = Get-Content -Path $file4
-} else {
-    $old4 = $null
 }
 if (Test-Path -Path $file6) {
     $old6 = Get-Content -Path $file6
-} else {
-    $old6 = $null
 }
 
 $lookup4 = [System.Uri]'https://ipinfo.io/ip'

SendDiscordChunk.ps1

@@ -1,4 +1,4 @@
-# internal function to transmit a discord chunk
+# internal function to transmit a chunk of text to Discord
 function SendDiscordMessage
 {
     param (
@@ -17,19 +17,21 @@ function SendDiscordMessage
     $botName = ConvertTo-Json -InputObject $botName
 
     # rewrite json string, because "\u001b[m" needs to "\u001b[0m" instead
-    # windows is fine with the missing zero, but discord needs it
+    # windows is fine with the missing zero, but Discord needs it
     $message = $message -Replace "\\u001b\[m", "\u001b[0m"
 
     # remove wrapping quotes around json string, replace with color-enabled block quotes
     $message = '"```ansi\n' + $message.SubString(1, $message.length - 2) + '\n```"'
 
-    # {"username": "$botName", "content": "$message"}
+    # build post data: {"username": "$botName", "content": "$message"}
     $content = "{";
     if ($botName) {
         $content += '"username": ' + $botName + ', ';
     }
     $content += '"content": ' + $message + '}';
 
-    echo "$content" | curl.exe -s -H "$header" -X "POST" -d "@-" "$webhook" | ConvertFrom-Json | Select-Object -Property id | Out-Host
+    # post data is complex, so we have to pipe it into curl
+    # display the resulting id/message returned from Discord
+    echo "$content" | curl.exe -s -H "$header" -X "POST" -d "@-" "$webhook" | ConvertFrom-Json | Select-Object -Property id, message
 }
 

config.example.ps1

@@ -4,3 +4,7 @@ $DISCORD_SERVER_NAME = "<YOUR_SERVER>"
 
 $DISCORD_WINDOWS_HOOK = "<WEBHOOK_URL_HERE>?wait=true"
 
+$DYNV6_ZONE = "<YOUR_DOMAIN>"
+
+$DYNV6_TOKEN = "<DYNV6_TOKEN>"
+