Refactor caseControl's duplication

frontend/app/projects/[projectId]/folders/[folderId]/cases/[caseId]/attachmentControl.ts

@@ -0,0 +1,87 @@
+import Config from "@/config/config";
+const apiServer = Config.apiServer;
+
+async function fetchDownloadAttachment(
+  attachmentId: number,
+  downloadFileName: string
+) {
+  const fetchOptions = {
+    method: "GET",
+    headers: {
+      "Content-Type": "application/json",
+    },
+  };
+
+  const url = `${apiServer}/attachments/download/${attachmentId}`;
+
+  try {
+    const response = await fetch(url, fetchOptions);
+    if (!response.ok) {
+      throw new Error(`HTTP error! Status: ${response.status}`);
+    }
+
+    const blob = await response.blob();
+    const downloadUrl = window.URL.createObjectURL(blob);
+
+    const link = document.createElement("a");
+    link.href = downloadUrl;
+    link.download = downloadFileName;
+    document.body.appendChild(link);
+    link.click();
+    document.body.removeChild(link);
+  } catch (error) {
+    console.error("Error downloading file:", error);
+    throw error;
+  }
+}
+
+async function fetchCreateAttachments(caseId: number, files: File[]) {
+  try {
+    const formData = new FormData();
+    for (let i = 0; i < files.length; i++) {
+      formData.append("files", files[i]);
+    }
+
+    const url = `${apiServer}/attachments?parentCaseId=${caseId}`;
+    const response = await fetch(url, {
+      method: "POST",
+      body: formData,
+    });
+
+    if (!response.ok) {
+      throw new Error("Network response was not ok");
+    }
+
+    const responseData = await response.json();
+    return responseData;
+  } catch (error) {
+    console.error("Error uploading files:", error);
+  }
+}
+
+async function fetchDeleteAttachment(attachmentId: number) {
+  const fetchOptions = {
+    method: "DELETE",
+    headers: {
+      "Content-Type": "application/json",
+    },
+  };
+
+  const url = `${apiServer}/attachments/${attachmentId}`;
+
+  try {
+    const response = await fetch(url, fetchOptions);
+    if (!response.ok) {
+      throw new Error(`HTTP error! Status: ${response.status}`);
+    }
+  } catch (error) {
+    console.error("Error deleting file:", error);
+    throw error;
+  }
+}
+
+export {
+  fetchDownloadAttachment,
+  fetchCreateAttachments,
+  fetchDeleteAttachment,
+};