fix(frontend): replace share delete confirm with in-app modal

frontend/app.js

@@ -94,6 +94,14 @@ createApp({
       shares: [],
       directLinks: [],
       directLinksLoading: false,
+      showDeleteConfirmModal: false,
+      deleteConfirm: {
+        type: '', // share | direct_link
+        id: null,
+        title: '',
+        message: '',
+        loading: false
+      },
       showShareFileModal: false,
       creatingShare: false, // 创建分享中状态
       shareFileForm: {
@@ -2965,9 +2973,29 @@ handleDragLeave(e) {
       }
     },
 
-    async deleteDirectLink(id) {
-      if (!window.confirm('确定要删除这个直链吗？')) return;
+    requestDeleteDirectLink(id, event = null) {
+      if (event) {
+        event.preventDefault();
+        event.stopPropagation();
+      }
 
+      const linkId = parseInt(id, 10);
+      if (!Number.isFinite(linkId) || linkId <= 0) {
+        this.showToast('warning', '提示', '无效的直链ID');
+        return;
+      }
+
+      this.deleteConfirm = {
+        type: 'direct_link',
+        id: linkId,
+        title: '删除直链',
+        message: '确定要删除这个直链吗？删除后将无法继续访问。',
+        loading: false
+      };
+      this.showDeleteConfirmModal = true;
+    },
+
+    async deleteDirectLink(id) {
       try {
         const response = await axios.delete(`${this.apiBase}/api/direct-link/${id}`);
         if (response.data?.success) {
@@ -3000,9 +3028,29 @@ handleDragLeave(e) {
       }
     },
 
-    async deleteShare(id) {
-      if (!window.confirm('确定要删除这个分享吗？')) return;
+    requestDeleteShare(id, event = null) {
+      if (event) {
+        event.preventDefault();
+        event.stopPropagation();
+      }
 
+      const shareId = parseInt(id, 10);
+      if (!Number.isFinite(shareId) || shareId <= 0) {
+        this.showToast('warning', '提示', '无效的分享ID');
+        return;
+      }
+
+      this.deleteConfirm = {
+        type: 'share',
+        id: shareId,
+        title: '删除分享',
+        message: '确定要删除这个分享吗？删除后外链将立即失效。',
+        loading: false
+      };
+      this.showDeleteConfirmModal = true;
+    },
+
+    async deleteShare(id) {
       try {
         const response = await axios.delete(`${this.apiBase}/api/share/${id}`);
 
@@ -3016,6 +3064,40 @@ handleDragLeave(e) {
       }
     },
 
+    closeDeleteConfirmModal(force = false) {
+      if (this.deleteConfirm.loading && !force) return;
+      this.showDeleteConfirmModal = false;
+      this.deleteConfirm = {
+        type: '',
+        id: null,
+        title: '',
+        message: '',
+        loading: false
+      };
+    },
+
+    async confirmDeleteAction() {
+      if (this.deleteConfirm.loading) return;
+      const { type, id } = this.deleteConfirm;
+      if (!type || !id) {
+        this.closeDeleteConfirmModal(true);
+        return;
+      }
+
+      this.deleteConfirm.loading = true;
+      try {
+        if (type === 'share') {
+          await this.deleteShare(id);
+        } else if (type === 'direct_link') {
+          await this.deleteDirectLink(id);
+        }
+        this.closeDeleteConfirmModal(true);
+      } catch (error) {
+        console.error('执行删除操作失败:', error);
+        this.deleteConfirm.loading = false;
+      }
+    },
+
     // 格式化到期时间显示
     formatExpireTime(expiresAt) {
       if (!expiresAt) return '永久有效';