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frontend/src/components/BroadcastModal.vue

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+<template>
+  <el-dialog v-model="visible" title="Массовая рассылка" width="700px" @close="$emit('close')">
+    <div v-if="step === 1">
+      <div style="margin-bottom:1em;">Вы выбрали {{userIds.length}} пользователей для рассылки.</div>
+      <ChatInterface
+        v-model:newMessage="message"
+        :isAdmin="true"
+        :messages="[]"
+        :attachments="attachments"
+        @update:attachments="val => attachments = val"
+        @send-message="onSend"
+        :showSendButton="false"
+      />
+      <el-button type="primary" :disabled="!message.trim()" @click="sendBroadcast" :loading="loading">Отправить</el-button>
+      <el-button @click="$emit('close')" style="margin-left:1em;">Отмена</el-button>
+    </div>
+    <div v-else-if="step === 2">
+      <div v-if="result.success" style="color:green;">Рассылка завершена успешно!</div>
+      <div v-if="result.errors && result.errors.length" style="color:red;max-height:120px;overflow:auto;">
+        Ошибки:
+        <ul>
+          <li v-for="err in result.errors" :key="err.userId">ID {{err.userId}}: {{err.error}}</li>
+        </ul>
+      </div>
+      <el-button type="primary" @click="closeAndRefresh">Закрыть</el-button>
+    </div>
+  </el-dialog>
+</template>
+
+<script setup>
+import { ref } from 'vue';
+import ChatInterface from './ChatInterface.vue';
+import messagesService from '../services/messagesService.js';
+import { ElMessage } from 'element-plus';
+const props = defineProps({ userIds: { type: Array, required: true } });
+const visible = ref(true);
+const message = ref('');
+const attachments = ref([]);
+const loading = ref(false);
+const step = ref(1);
+const result = ref({});
+
+async function sendBroadcast() {
+  loading.value = true;
+  const errors = [];
+  let successCount = 0;
+  for (const userId of props.userIds) {
+    try {
+      await messagesService.broadcastMessage({ userId, message: message.value });
+      successCount++;
+    } catch (e) {
+      errors.push({ userId, error: e?.message || 'Ошибка отправки' });
+    }
+  }
+  result.value = { success: errors.length === 0, errors };
+  step.value = 2;
+  loading.value = false;
+}
+function onSend() {
+  sendBroadcast();
+}
+function closeAndRefresh() {
+  visible.value = false;
+  setTimeout(() => {
+    step.value = 1;
+    result.value = {};
+    message.value = '';
+    attachments.value = [];
+    loading.value = false;
+    // Сообщаем родителю об успешной рассылке
+    emit('close');
+  }, 300);
+}
+</script>