support uploading csv or txt to sudo commands and groups

src/lib/roleFormTextImport.ts

@@ -0,0 +1,110 @@
+export type TextImportFileType = "txt" | "csv";
+export type TextImportMode = "override" | "append";
+
+export function getTextImportFileType(file: File): TextImportFileType | null {
+    const extension = file.name.split(".").pop()?.toLowerCase();
+    if (extension === "txt" || extension === "csv") {
+        return extension;
+    }
+    return null;
+}
+
+export function isSupportedTextImportFile(file: File): boolean {
+    return getTextImportFileType(file) !== null;
+}
+
+export function readFileAsText(file: File): Promise<string> {
+    return new Promise((resolve, reject) => {
+        const reader = new FileReader();
+        reader.onload = (event) => {
+            const result = event.target?.result;
+            if (typeof result === "string") {
+                resolve(result);
+                return;
+            }
+            reject(new Error("Failed to read file"));
+        };
+        reader.onerror = () => reject(reader.error);
+        reader.readAsText(file);
+    });
+}
+
+function parseCsvFirstCell(row: string): string {
+    const trimmed = row.trim();
+    if (!trimmed) return "";
+
+    if (trimmed.startsWith('"')) {
+        let index = 1;
+        let cell = "";
+        while (index < trimmed.length) {
+            if (trimmed[index] === '"') {
+                if (trimmed[index + 1] === '"') {
+                    cell += '"';
+                    index += 2;
+                    continue;
+                }
+                break;
+            }
+            cell += trimmed[index];
+            index += 1;
+        }
+        return cell.trim();
+    }
+
+    const commaIndex = trimmed.indexOf(",");
+    return (commaIndex === -1 ? trimmed : trimmed.slice(0, commaIndex)).trim();
+}
+
+export function parseCsvFirstColumn(
+    content: string,
+    skipHeader: boolean
+): string[] {
+    const rows = content.split(/\r?\n/).filter((line) => line.trim());
+    const dataRows = skipHeader ? rows.slice(1) : rows;
+
+    return dataRows.map(parseCsvFirstCell).filter(Boolean);
+}
+
+export function parseTextFileItems({
+    content,
+    fileType,
+    skipHeader,
+    parser
+}: {
+    content: string;
+    fileType: TextImportFileType;
+    skipHeader: boolean;
+    parser: (value: string | undefined) => string[];
+}): string[] {
+    if (fileType === "csv") {
+        return parseCsvFirstColumn(content, skipHeader);
+    }
+
+    return parser(content);
+}
+
+export function parsePreviewLines(value: string): string[] {
+    return value
+        .split(/\n/)
+        .map((line) => line.trim())
+        .filter(Boolean);
+}
+
+export function applyTextImport({
+    currentValue,
+    imported,
+    mode,
+    parser
+}: {
+    currentValue: string;
+    imported: string[];
+    mode: TextImportMode;
+    parser: (value: string | undefined) => string[];
+}): string {
+    if (mode === "override") {
+        return imported.join("\n");
+    }
+
+    const existing = parser(currentValue);
+    return [...existing, ...imported].join("\n");
+}