extend to email address list

Author: Jicheng Lu

src/Plugins/BotSharp.Plugin.EmailHandler/Functions/HandleEmailSenderFn.cs

@@ -29,7 +29,7 @@ public HandleEmailSenderFn(
     public async Task<bool> Execute(RoleDialogModel message)
     {
         var args = JsonSerializer.Deserialize<LlmContextIn>(message.FunctionArgs, _options.JsonSerializerOptions);
-        var recipient = args?.ToAddress;
+        var recipients = args?.ToAddresses?.Where(x => !string.IsNullOrWhiteSpace(x)) ?? [];
         var body = args?.Content;
         var subject = args?.Subject;
         var isNeedAttachments = args?.IsNeedAttachemnts ?? false;
@@ -39,7 +39,12 @@ public async Task<bool> Execute(RoleDialogModel message)
         {
             var mailMessage = new MimeMessage();
             mailMessage.From.Add(new MailboxAddress(_emailSettings.Name, _emailSettings.EmailAddress));
-            mailMessage.To.Add(new MailboxAddress("", recipient));
+
+            foreach (var recipient in recipients)
+            {
+                mailMessage.To.Add(new MailboxAddress("", recipient));
+            }
+
             mailMessage.Subject = subject;
             bodyBuilder.TextBody = body;
 
@@ -53,7 +58,7 @@ public async Task<bool> Execute(RoleDialogModel message)
             var response = await SendEmailBySMTP(mailMessage);
             message.Content = response;
 
-            _logger.LogWarning($"Email successfully send over to {recipient}. Email Subject: {subject} [{response}]");
+            _logger.LogWarning($"Email successfully send over to {string.Join(",", recipients)}. Email Subject: {subject} [{response}]");
             return true;
         }
         catch (Exception ex)

src/Plugins/BotSharp.Plugin.EmailHandler/LlmContexts/LlmContextIn.cs

@@ -4,8 +4,8 @@ namespace BotSharp.Plugin.EmailHandler.LlmContexts;
 
 public class LlmContextIn
 {
-    [JsonPropertyName("to_address")]
-    public string? ToAddress { get; set; }
+    [JsonPropertyName("to_address_list")]
+    public IEnumerable<string>? ToAddresses { get; set; }
 
     [JsonPropertyName("email_content")]
     public string? Content { get; set; }

src/Plugins/BotSharp.Plugin.EmailHandler/data/agents/6745151e-6d46-4a02-8de4-1c4f21c7da95/functions/util-email-handle_email_sender.json

@@ -4,9 +4,12 @@
   "parameters": {
     "type": "object",
     "properties": {
-      "to_address": {
-        "type": "string",
-        "description": "The email address to which the email should be sent to. It needs to be a valid email address in the correct string format."
+      "to_address_list": {
+        "type": "array",
+        "description": "The email addresses to which the email should be sent. Each item needs to be a valid and unique email address in the correct string format.",
+        "items": {
+          "type": "string"
+        }
       },
       "email_content": {
         "type": "string",
@@ -21,6 +24,6 @@
         "description": "If the user request to send email with attachemnt(s) or file(s), then this value should be True. Otherwise, this value should be False."
       }
     },
-    "required": [ "to_address", "email_content", "subject", "is_need_attachments" ]
+    "required": [ "to_address_list", "email_content", "subject", "is_need_attachments" ]
   }
 }