diff --git a/lib/utils/slack/slack_data.dart b/lib/utils/slack/slack_data.dart
index 3a36b35..aae410e 100644
--- a/lib/utils/slack/slack_data.dart
+++ b/lib/utils/slack/slack_data.dart
@@ -1,113 +1,136 @@
+// ignore_for_file: non_constant_identifier_names, avoid_init_to_null, constant_identifier_names
+// ignore: depend_on_referenced_packages, implementation_imports
+
 import 'dart:async';
 import 'dart:convert';
 import 'dart:io';
 
 import 'package:json_annotation/json_annotation.dart';
 import 'package:http/http.dart';
-// ignore: depend_on_referenced_packages, implementation_imports
 import 'package:http_parser/src/media_type.dart';
 part 'slack_data.g.dart';
 
-enum SlackBlockType { header, section }
+enum SlackBlockType { header, section, divider, actions }
 
 enum SlackTextType { mrkdwn, plain_text }
 
-enum SlackActionType { button, select }
+enum SlackActionType { button, select, image }
 
 enum SlackActionStyle { danger, primary }
 
 @JsonSerializable()
 class DataSlack {
-  String? message;
-  List<SlackBlock> blocks = [];
-  List<SlackAttachment> attachments = [];
+  String channel;
+  String? text;
+  late List<SlackBlock>? blocks = null;
+  late List<SlackAttachment>? attachments = null;
+  bool? link_names;
 
-  String getBlocks() {
-    var list = [];
-    for (var item in blocks) {
-      list.add(item.toJson());
-    }
-    return jsonEncode(list);
+  String get json
+  {
+    return jsonEncode(toJson());
   }
 
-  String getAttachments() {
-    var list = [];
-    for (var item in attachments) {
-      list.add(item.toJson());
-    }
-    return jsonEncode(list);
-  }
-
-  DataSlack();
+  DataSlack(this.channel);
 
   factory DataSlack.fromJson(Map<String, dynamic> json) =>
       _$DataSlackFromJson(json);
-  Map<String, dynamic> toJson() => _$DataSlackToJson(this);
+  Map<String, dynamic> toJson() {
+    return removeKeys(_$DataSlackToJson(this));
+  } 
+}
+
+Map<String, dynamic> removeKeys(Map<String, dynamic> map)
+{
+  var emptyKeys = [];
+  for(var item in map.entries) {
+    if(item.value == null) {
+      emptyKeys.add(item.key);
+    }
+    if(item.value is List) {
+      var list = item.value as List;
+      if(list.isEmpty) {
+        emptyKeys.add(item.key);
+      }
+    }
+  }
+
+  for(var key in emptyKeys) {
+    map.remove(key);
+  }
+  return map;
 }
 
 @JsonSerializable()
 class SlackBlock {
   late SlackBlockType type;
+  late String? block_id = null;
 
   SlackBlock();
 
   factory SlackBlock.fromJson(Map<String, dynamic> json) =>
       _$SlackBlockFromJson(json);
-  Map<String, dynamic> toJson() => _$SlackBlockToJson(this);
+  Map<String, dynamic> toJson() => removeKeys(_$SlackBlockToJson(this));
 }
 
 @JsonSerializable()
 class SlackBlockHeader extends SlackBlock {
-  late SlackBlockText text;
+  late SlackBlockText? text;
 
   SlackBlockHeader() {
     super.type = SlackBlockType.header;
-    text = SlackBlockText();
-    text.type = SlackTextType.plain_text;
   }
 
   factory SlackBlockHeader.fromJson(Map<String, dynamic> json) =>
       _$SlackBlockHeaderFromJson(json);
   @override
-  Map<String, dynamic> toJson() => _$SlackBlockHeaderToJson(this);
+  Map<String, dynamic> toJson() => removeKeys(_$SlackBlockHeaderToJson(this));
 }
 
 @JsonSerializable()
 class SlackBlockSection extends SlackBlock {
-  List<SlackBlockSectionField> fields = [];
+  late SlackBlockText? text = null;
+  late List<SlackBlockText>? fields = null;
+  late SlackAccessory? accessory = null;
 
-  SlackBlockSection() {
-    super.type = SlackBlockType.section;
+  SlackBlockSection()
+  {
+    type = SlackBlockType.section;
   }
 
   factory SlackBlockSection.fromJson(Map<String, dynamic> json) =>
       _$SlackBlockSectionFromJson(json);
   @override
-  Map<String, dynamic> toJson() => _$SlackBlockSectionToJson(this);
+  Map<String, dynamic> toJson() => removeKeys(_$SlackBlockSectionToJson(this));
 }
 
 @JsonSerializable()
-class SlackBlockSectionField {
-  SlackTextType type = SlackTextType.mrkdwn;
-  String? text;
+class SlackAccessory {
+  late SlackActionType type;
+  late SlackBlockText? text = null;
+  late String? image_url = null;
+  late String? alt_text = null;
+  late String? value = null;
+  late String? url = null;
 
-  SlackBlockSectionField();
+  SlackAccessory();
 
-  factory SlackBlockSectionField.fromJson(Map<String, dynamic> json) =>
-      _$SlackBlockSectionFieldFromJson(json);
-  Map<String, dynamic> toJson() => _$SlackBlockSectionFieldToJson(this);
+  factory SlackAccessory.fromJson(Map<String, dynamic> json) =>
+      _$SlackAccessoryFromJson(json);
+  Map<String, dynamic> toJson() => removeKeys(_$SlackAccessoryToJson(this));
 }
 
 @JsonSerializable()
 class SlackBlockText {
   SlackTextType type = SlackTextType.mrkdwn;
-  String? text;
+  late String? text = null;
+  late bool? emoji = null;
 
   SlackBlockText();
 
   factory SlackBlockText.fromJson(Map<String, dynamic> json) =>
       _$SlackBlockTextFromJson(json);
-  Map<String, dynamic> toJson() => _$SlackBlockTextToJson(this);
+  Map<String, dynamic> toJson() => removeKeys(_$SlackBlockTextToJson(this));
 }
 
 @JsonSerializable()
@@ -127,27 +150,29 @@ class SlackAttachment {
   String? footer_icon;
   String? ts;
 
-  List<SlackField>? fields;
-  List<SlackAction>? actions;
+  late List<SlackBlock>? blocks = null;
+  late List<SlackField>? fields = null;
+  late List<SlackAction>? actions = null;
 
   SlackAttachment();
 
   factory SlackAttachment.fromJson(Map<String, dynamic> json) =>
       _$SlackAttachmentFromJson(json);
-  Map<String, dynamic> toJson() => _$SlackAttachmentToJson(this);
+  Map<String, dynamic> toJson() => removeKeys(_$SlackAttachmentToJson(this));
 }
 
 @JsonSerializable()
 class SlackField {
   String? title;
   String? value;
+  bool? short = false;
 
   SlackField();
-  SlackField.withParam(this.title, this.value);
+  SlackField.withParam(this.title, this.value, {this.short});
 
   factory SlackField.fromJson(Map<String, dynamic> json) =>
       _$SlackFieldFromJson(json);
-  Map<String, dynamic> toJson() => _$SlackFieldToJson(this);
+  Map<String, dynamic> toJson() => removeKeys(_$SlackFieldToJson(this));
 }
 
 @JsonSerializable()
@@ -167,22 +192,19 @@ class SlackAction {
 
   factory SlackAction.fromJson(Map<String, dynamic> json) =>
       _$SlackActionFromJson(json);
-  Map<String, dynamic> toJson() => _$SlackActionToJson(this);
+  Map<String, dynamic> toJson() => removeKeys(_$SlackActionToJson(this));
 }
 
 @JsonSerializable()
 class SlackConfirm {
   String? title;
   String? text;
-  // ignore: non_constant_identifier_names
   String? ok_text;
-  // ignore: non_constant_identifier_names
   String? dismiss_text;
 }
 
 class SlackFile {
   String? title;
-  // ignore: non_constant_identifier_names
   String? initial_comment;
   String? fileName;
   String? mimeType;
diff --git a/lib/utils/slack/slack_data.g.dart b/lib/utils/slack/slack_data.g.dart
index e003b61..ce144da 100644
--- a/lib/utils/slack/slack_data.g.dart
+++ b/lib/utils/slack/slack_data.g.dart
@@ -6,70 +6,119 @@ part of 'slack_data.dart';
 // JsonSerializableGenerator
 // **************************************************************************
 
-DataSlack _$DataSlackFromJson(Map<String, dynamic> json) => DataSlack()
-  ..message = json['message'] as String?
-  ..blocks = (json['blocks'] as List<dynamic>)
-      .map((e) => SlackBlock.fromJson(e as Map<String, dynamic>))
-      .toList()
-  ..attachments = (json['attachments'] as List<dynamic>)
-      .map((e) => SlackAttachment.fromJson(e as Map<String, dynamic>))
-      .toList();
+DataSlack _$DataSlackFromJson(Map<String, dynamic> json) => DataSlack(
+      json['channel'] as String,
+    )
+      ..text = json['text'] as String?
+      ..blocks = (json['blocks'] as List<dynamic>?)
+          ?.map((e) => SlackBlock.fromJson(e as Map<String, dynamic>))
+          .toList()
+      ..attachments = (json['attachments'] as List<dynamic>?)
+          ?.map((e) => SlackAttachment.fromJson(e as Map<String, dynamic>))
+          .toList()
+      ..link_names = json['link_names'] as bool?;
 
 Map<String, dynamic> _$DataSlackToJson(DataSlack instance) => <String, dynamic>{
-      'message': instance.message,
+      'channel': instance.channel,
+      'text': instance.text,
       'blocks': instance.blocks,
       'attachments': instance.attachments,
+      'link_names': instance.link_names,
     };
 
-SlackBlock _$SlackBlockFromJson(Map<String, dynamic> json) =>
-    SlackBlock()..type = $enumDecode(_$SlackBlockTypeEnumMap, json['type']);
+SlackBlock _$SlackBlockFromJson(Map<String, dynamic> json) => SlackBlock()
+  ..type = $enumDecode(_$SlackBlockTypeEnumMap, json['type'])
+  ..block_id = json['block_id'] as String?;
 
 Map<String, dynamic> _$SlackBlockToJson(SlackBlock instance) =>
     <String, dynamic>{
       'type': _$SlackBlockTypeEnumMap[instance.type]!,
+      'block_id': instance.block_id,
     };
 
 const _$SlackBlockTypeEnumMap = {
   SlackBlockType.header: 'header',
   SlackBlockType.section: 'section',
+  SlackBlockType.divider: 'divider',
+  SlackBlockType.actions: 'actions',
 };
 
 SlackBlockHeader _$SlackBlockHeaderFromJson(Map<String, dynamic> json) =>
     SlackBlockHeader()
       ..type = $enumDecode(_$SlackBlockTypeEnumMap, json['type'])
-      ..text = SlackBlockText.fromJson(json['text'] as Map<String, dynamic>);
+      ..block_id = json['block_id'] as String?
+      ..text = json['text'] == null
+          ? null
+          : SlackBlockText.fromJson(json['text'] as Map<String, dynamic>);
 
 Map<String, dynamic> _$SlackBlockHeaderToJson(SlackBlockHeader instance) =>
     <String, dynamic>{
       'type': _$SlackBlockTypeEnumMap[instance.type]!,
+      'block_id': instance.block_id,
       'text': instance.text,
     };
 
 SlackBlockSection _$SlackBlockSectionFromJson(Map<String, dynamic> json) =>
     SlackBlockSection()
       ..type = $enumDecode(_$SlackBlockTypeEnumMap, json['type'])
-      ..fields = (json['fields'] as List<dynamic>)
-          .map(
-              (e) => SlackBlockSectionField.fromJson(e as Map<String, dynamic>))
-          .toList();
+      ..block_id = json['block_id'] as String?
+      ..text = json['text'] == null
+          ? null
+          : SlackBlockText.fromJson(json['text'] as Map<String, dynamic>)
+      ..fields = (json['fields'] as List<dynamic>?)
+          ?.map((e) => SlackBlockText.fromJson(e as Map<String, dynamic>))
+          .toList()
+      ..accessory = json['accessory'] == null
+          ? null
+          : SlackAccessory.fromJson(json['accessory'] as Map<String, dynamic>);
 
 Map<String, dynamic> _$SlackBlockSectionToJson(SlackBlockSection instance) =>
     <String, dynamic>{
       'type': _$SlackBlockTypeEnumMap[instance.type]!,
+      'block_id': instance.block_id,
+      'text': instance.text,
       'fields': instance.fields,
+      'accessory': instance.accessory,
     };
 
-SlackBlockSectionField _$SlackBlockSectionFieldFromJson(
-        Map<String, dynamic> json) =>
-    SlackBlockSectionField()
-      ..type = $enumDecode(_$SlackTextTypeEnumMap, json['type'])
-      ..text = json['text'] as String?;
+SlackAccessory _$SlackAccessoryFromJson(Map<String, dynamic> json) =>
+    SlackAccessory()
+      ..type = $enumDecode(_$SlackActionTypeEnumMap, json['type'])
+      ..text = json['text'] == null
+          ? null
+          : SlackBlockText.fromJson(json['text'] as Map<String, dynamic>)
+      ..image_url = json['image_url'] as String?
+      ..alt_text = json['alt_text'] as String?
+      ..value = json['value'] as String?
+      ..url = json['url'] as String?;
 
-Map<String, dynamic> _$SlackBlockSectionFieldToJson(
-        SlackBlockSectionField instance) =>
+Map<String, dynamic> _$SlackAccessoryToJson(SlackAccessory instance) =>
+    <String, dynamic>{
+      'type': _$SlackActionTypeEnumMap[instance.type]!,
+      'text': instance.text,
+      'image_url': instance.image_url,
+      'alt_text': instance.alt_text,
+      'value': instance.value,
+      'url': instance.url,
+    };
+
+const _$SlackActionTypeEnumMap = {
+  SlackActionType.button: 'button',
+  SlackActionType.select: 'select',
+  SlackActionType.image: 'image',
+};
+
+SlackBlockText _$SlackBlockTextFromJson(Map<String, dynamic> json) =>
+    SlackBlockText()
+      ..type = $enumDecode(_$SlackTextTypeEnumMap, json['type'])
+      ..text = json['text'] as String?
+      ..emoji = json['emoji'] as bool?;
+
+Map<String, dynamic> _$SlackBlockTextToJson(SlackBlockText instance) =>
     <String, dynamic>{
       'type': _$SlackTextTypeEnumMap[instance.type]!,
       'text': instance.text,
+      'emoji': instance.emoji,
     };
 
 const _$SlackTextTypeEnumMap = {
@@ -77,17 +126,6 @@ const _$SlackTextTypeEnumMap = {
   SlackTextType.plain_text: 'plain_text',
 };
 
-SlackBlockText _$SlackBlockTextFromJson(Map<String, dynamic> json) =>
-    SlackBlockText()
-      ..type = $enumDecode(_$SlackTextTypeEnumMap, json['type'])
-      ..text = json['text'] as String?;
-
-Map<String, dynamic> _$SlackBlockTextToJson(SlackBlockText instance) =>
-    <String, dynamic>{
-      'type': _$SlackTextTypeEnumMap[instance.type]!,
-      'text': instance.text,
-    };
-
 SlackAttachment _$SlackAttachmentFromJson(Map<String, dynamic> json) =>
     SlackAttachment()
       ..fallback = json['fallback'] as String?
@@ -104,6 +142,9 @@ SlackAttachment _$SlackAttachmentFromJson(Map<String, dynamic> json) =>
       ..footer = json['footer'] as String?
       ..footer_icon = json['footer_icon'] as String?
       ..ts = json['ts'] as String?
+      ..blocks = (json['blocks'] as List<dynamic>?)
+          ?.map((e) => SlackBlock.fromJson(e as Map<String, dynamic>))
+          .toList()
       ..fields = (json['fields'] as List<dynamic>?)
           ?.map((e) => SlackField.fromJson(e as Map<String, dynamic>))
           .toList()
@@ -127,18 +168,21 @@ Map<String, dynamic> _$SlackAttachmentToJson(SlackAttachment instance) =>
       'footer': instance.footer,
       'footer_icon': instance.footer_icon,
       'ts': instance.ts,
+      'blocks': instance.blocks,
       'fields': instance.fields,
       'actions': instance.actions,
     };
 
 SlackField _$SlackFieldFromJson(Map<String, dynamic> json) => SlackField()
   ..title = json['title'] as String?
-  ..value = json['value'] as String?;
+  ..value = json['value'] as String?
+  ..short = json['short'] as bool?;
 
 Map<String, dynamic> _$SlackFieldToJson(SlackField instance) =>
     <String, dynamic>{
       'title': instance.title,
       'value': instance.value,
+      'short': instance.short,
     };
 
 SlackAction _$SlackActionFromJson(Map<String, dynamic> json) => SlackAction()
@@ -159,11 +203,6 @@ Map<String, dynamic> _$SlackActionToJson(SlackAction instance) =>
       'style': _$SlackActionStyleEnumMap[instance.style],
     };
 
-const _$SlackActionTypeEnumMap = {
-  SlackActionType.button: 'button',
-  SlackActionType.select: 'select',
-};
-
 const _$SlackActionStyleEnumMap = {
   SlackActionStyle.danger: 'danger',
   SlackActionStyle.primary: 'primary',
diff --git a/lib/utils/slack/slack_sender.dart b/lib/utils/slack/slack_sender.dart
index 03fef5b..308d38d 100644
--- a/lib/utils/slack/slack_sender.dart
+++ b/lib/utils/slack/slack_sender.dart
@@ -1,6 +1,9 @@
+// ignore_for_file: unused_local_variable
+
 import 'dart:async';
 
 import 'package:color/color.dart';
+import 'package:dart_framework/utils/system_util.dart';
 import 'package:http/http.dart' as http;
 
 import 'slack_data.dart';
@@ -10,80 +13,56 @@ enum SlackBuildType { android, ios, windows, mac, web }
 
 class SlackSender {
   //Bot TOKEN
-  final token = "xoxb-291006091297-QT2K1PCpwyX4b5wKk3AQew2G";
+  String token = "xoxb-291006091297-QT2K1PCpwyX4b5wKk3AQew2G";
   //API - https://api.slack.com/methods/chat.postMessage
   final urlMessagePost = "https://slack.com/api/chat.postMessage";
   //API - https://api.slack.com/methods/files.upload
   final urlFileUplaod = "https://slack.com/api/files.upload";
 
+  SlackSender(String? token) {
+    if(token != null) {
+      this.token = token;
+    }
+  }
+
   String getValidatedUser(String? targetUser) {
-    targetUser ??= "@channel";
+    targetUser ??= "@here";
     if (targetUser.indexOf("@") != 0) targetUser = "@$targetUser";
     return targetUser;
   }
 
-  String getURL(String channel, DataSlack message, String? targetUser,
-      {bool includeURL = true}) {
-    targetUser = getValidatedUser(targetUser);
-    var buffer = StringBuffer();
-    if (includeURL) {
-      buffer.write(urlMessagePost);
-      buffer.write('?');
-    }
-    buffer.write('token=$token');
-    buffer.write('&channel=$channel');
-    var sendMessage = message.message == null
-        ? ''
-        : Uri.encodeComponent(' ${message.message!}');
-    buffer.write('&text=$targetUser$sendMessage');
-    if (message.blocks.isNotEmpty) {
-      var json = message.getBlocks();
-      print(json);
-      buffer.write('&blocks=${Uri.encodeComponent(message.getBlocks())}');
-    }
-    if (message.attachments.isNotEmpty) {
-      buffer.write(
-          '&attachments=${Uri.encodeComponent(message.getAttachments())}');
-    }
-    buffer.write('&link_names=true');
-    print(buffer.toString());
-    return buffer.toString();
-  }
-
-  //단일 Attachment로 보낼시
-  Future send(String channel, SlackAttachment attachment,
-      {String? targetUser,
-      Function(String)? completeListener,
-      Function(Exception)? errorListener}) async {
-    var data = DataSlack();
-    data.attachments = [attachment];
-    return await sends(channel, data, targetUser: targetUser);
-  }
-
-  //복수의 Attachment로 보낼시
-  Future sends(String channel, DataSlack message,
-      {String? targetUser,
-      Function(String)? completeListener,
+  Future send(DataSlack message,
+      {Function(String)? completeListener,
       Function(Object)? errorListener}) async {
-    var c = Completer();
-    String url = getURL(channel, message, targetUser);
+    String url = urlMessagePost;
 
-    var response = await http.get(Uri.parse(url));
+    var header = 
+    {
+      'Content-Type': 'application/json',
+      'Authorization': 'Bearer $token'
+    };
+    var body = message.json;
+    print(body);
+    var response = await http.post(Uri.parse(url), headers: header, body: message.json);
+
+    print(response.statusCode);
 
     if (response.statusCode < 300 && response.statusCode >= 200) {
       print(response.body);
-      if (completeListener != null) completeListener(response.body);
+      if (completeListener != null)
+      {
+        completeListener(response.body);
+        print(response.body);
+      }
     } else {
-      if (errorListener != null) errorListener(response);
+      if (errorListener != null)
+      {
+        errorListener(response);
+        print(response.body);
+      }
     }
 
-    c.complete();
-    return c.future;
-  }
-
-  String getParameters(String channel, DataSlack message,
-      {String? targetUser}) {
-    return getURL(channel, message, targetUser, includeURL: false);
+    return simpleFuture;
   }
 
   /// ****************** File Send *******************
@@ -100,7 +79,6 @@ class SlackSender {
       {String? targetUser,
       Function(String)? completeListener,
       Function(Object)? errorListener}) async {
-    var c = Completer();
     var form = getPostForm(urlFileUplaod, channel, targetUser);
     form = await file.setFileData(form);
     var response = await form.send();
@@ -112,36 +90,10 @@ class SlackSender {
       if (errorListener != null) errorListener(result);
     }
 
-    c.complete();
-    return c.future;
-  }
-
-  /// ****************** Send template *******************
-  void sendTest() async {
-    DataSlack message = DataSlack();
-    message.attachments = [];
-    var attachment = SlackAttachment();
-    attachment.author_name = 'toki';
-    attachment.text = 'This is Test!!';
-    attachment.color = '#ff2f00';
-    attachment.fields = [
-      SlackField.withParam('Test1', 'Value1'),
-      SlackField.withParam('Test2', 'Value2'),
-    ];
-    message.attachments.add(attachment);
-
-    attachment = SlackAttachment();
-    attachment.author_name = 'toki';
-    attachment.text = 'This is Test!!2';
-    attachment.color = '#0084ff';
-    attachment.fields = [
-      SlackField.withParam('Test3', 'Value3'),
-      SlackField.withParam('Test4', 'Value4'),
-    ];
-    message.attachments.add(attachment);
-    await sends('app_notifier', message, targetUser: 'toki');
+    return simpleFuture;
   }
 
+  /// ****************** Build Send *******************
   Future sendBuild(String appName, SlackBuildType buildType, Color color,
       String version, String downloadURL,
       {String channel = 'build'}) async {
@@ -150,17 +102,17 @@ class SlackSender {
         ? '${buildURL}android.png'
         : '${buildURL}appstore.png';
     String projectIcon = "$buildURL$appName/icon.png";
-    // ignore: unused_local_variable
     String emoji =
         buildType == SlackBuildType.android ? ":android1: " : ":ios0: ";
     String osColor = buildType == SlackBuildType.ios ? "#ED145B" : "#81CA3F";
-    var message = DataSlack();
+    var message = DataSlack(channel);
+    message.attachments = [];
     var attachments = message.attachments;
 
     var attachment = SlackAttachment();
     attachment.color = color.toHexColor().toCssString();
     attachment.fields = [SlackField.withParam(toPascal(appName), null)];
-    attachments.add(attachment);
+    attachments?.add(attachment);
 
     var buildTypeStr = buildTypeToString(buildType);
     attachment = SlackAttachment();
@@ -176,9 +128,9 @@ class SlackSender {
       SlackAction.withParam(
           'build', 'Download', downloadURL, null, SlackActionType.button, null)
     ];
-    attachments.add(attachment);
+    attachments?.add(attachment);
 
-    return await sends(channel, message);
+    return await send(message);
   }
 
   String buildTypeToString(SlackBuildType type) {
diff --git a/lib/utils/slack/slack_template.dart b/lib/utils/slack/slack_template.dart
new file mode 100644
index 0000000..1d05cd2
--- /dev/null
+++ b/lib/utils/slack/slack_template.dart
@@ -0,0 +1,97 @@
+
+import 'package:dart_framework/utils/slack/slack_data.dart';
+
+//Format info
+//https://api.slack.com/reference/surfaces/formatting
+
+class SlackTemplate {
+  static DataSlack getAttachments(String channel) {
+    DataSlack data = DataSlack(channel);
+
+    data.attachments = [];
+    var attachment = SlackAttachment();
+    attachment.fallback = 'Plain-text summary of the attachment.';
+    attachment.color = '#2eb886';
+    attachment.pretext = 'Optional text that appears above the attachment block';
+    attachment.author_name = 'Bobby Tables';
+    attachment.author_link = 'http://flickr.com/bobby/';
+    attachment.author_icon = 'http://flickr.com/icons/bobby.jpg';
+    attachment.title = 'Slack API Documentation';
+    attachment.title_link = 'https://api.slack.com/';
+    attachment.text = 'Optional text that appears within the attachment';
+    attachment.fields = [
+      SlackField.withParam('Priority', 'High', short: false),
+    ];
+    attachment.image_url = 'https://upload.wikimedia.org/wikipedia/commons/thumb/7/73/Flat_tick_icon.svg/1024px-Flat_tick_icon.svg.png';
+    attachment.thumb_url = 'https://cdn-icons-png.flaticon.com/512/3771/3771140.png';
+    attachment.footer = 'Slack API';
+    attachment.footer_icon = 'https://platform.slack-edge.com/img/default_application_icon.png';
+    attachment.ts = '123456789';
+    data.attachments!.add(attachment);
+    return data;
+  }
+
+  static DataSlack getBlocks(String channel) {
+    DataSlack data = DataSlack(channel);
+
+    data.attachments = [];
+    var attachment = SlackAttachment();
+    data.blocks = [];
+    var blockSection = SlackBlockSection();
+    blockSection.text = SlackBlockText();
+    blockSection.text!.text = 'Danny Torrence left the following review for your property:';
+    data.blocks!.add(blockSection);
+
+    blockSection = SlackBlockSection();
+    blockSection.text = SlackBlockText();
+    blockSection.text!.text = '<https://example.com|Overlook Hotel> \n :star: \n Doors had too many axe holes, guest in room 237 was far too rowdy, whole place felt stuck in the 1920s.';
+    blockSection.accessory = SlackAccessory();
+    blockSection.accessory!.type = SlackActionType.image;
+    blockSection.accessory!.image_url = 'https://is5-ssl.mzstatic.com/image/thumb/Purple3/v4/d3/72/5c/d3725c8f-c642-5d69-1904-aa36e4297885/source/256x256bb.jpg';
+    blockSection.accessory!.alt_text = 'Haunted hotel image';
+    data.blocks!.add(blockSection);
+    
+    blockSection = SlackBlockSection();
+    blockSection.block_id = 'section789';
+    blockSection.fields = [];
+    var field = SlackBlockText();
+    field.text = '*Average Rating*\n1.0';
+    blockSection.fields!.add(field);
+    data.blocks!.add(blockSection);
+    
+    attachment.blocks = [];
+    blockSection = SlackBlockSection();
+    blockSection.text = SlackBlockText();
+    blockSection.text!.text = '*Alternative hotel options*';
+    attachment.blocks!.add(blockSection);
+
+    blockSection = SlackBlockSection();
+    blockSection.text = SlackBlockText();
+    blockSection.text!.text = '<https://example.com|Bates Motel> :star::star:';
+    blockSection.accessory = SlackAccessory();
+    blockSection.accessory!.type = SlackActionType.button;
+    blockSection.accessory!.url = 'https://www.google.com';
+    blockSection.accessory!.text = SlackBlockText();
+    blockSection.accessory!.text!.type = SlackTextType.plain_text;
+    blockSection.accessory!.text!.text = 'View';
+    blockSection.accessory!.text!.emoji = true;
+    blockSection.accessory!.value = 'view_alternate_1';
+    attachment.blocks!.add(blockSection);
+
+    blockSection = SlackBlockSection();
+    blockSection.text = SlackBlockText();
+    blockSection.text!.text = '<https://example.com|The Great Northern Hotel> :star::star::star::star:';
+    blockSection.accessory = SlackAccessory();
+    blockSection.accessory!.type = SlackActionType.button;
+    blockSection.accessory!.url = 'https://www.naver.com';
+    blockSection.accessory!.text = SlackBlockText();
+    blockSection.accessory!.text!.type = SlackTextType.plain_text;
+    blockSection.accessory!.text!.text = 'View';
+    blockSection.accessory!.text!.emoji = true;
+    blockSection.accessory!.value = 'view_alternate_2';
+    attachment.blocks!.add(blockSection);
+
+    data.attachments!.add(attachment);
+    return data;
+  }
+}
\ No newline at end of file