core: move lib/misc to ui

packages/ui-default/backendlib/misc.ts

@@ -0,0 +1,50 @@
+import AnsiUp from 'ansi_up';
+import moment from 'moment-timezone';
+import { ObjectID } from 'mongodb';
+
+export { size, formatSeconds } from '@hydrooj/utils/lib/utils';
+
+const AU = new AnsiUp();
+
+export function ansiToHtml(str: string, whiteToBlack = true) {
+  const res = AU.ansi_to_html(str);
+  return whiteToBlack ? res.replace(/style="color:rgb\(255,255,255\)"/g, 'style="color:black"') : res;
+}
+
+export function datetimeSpan(dt: Date | ObjectID, relative = true, format = 'YYYY-M-D H:mm:ss', tz = 'Asia/Shanghai') {
+  if (!dt) return 'DATETIME_SPAN_ERROR';
+  if (dt instanceof ObjectID) dt = new Date(dt.generationTime * 1000);
+  else if (typeof dt === 'string' && ObjectID.isValid(dt)) dt = new Date(new ObjectID(dt).generationTime * 1000);
+  else if (typeof dt === 'number' || typeof dt === 'string') dt = new Date(dt);
+  return '<span class="time{0}" data-timestamp="{1}">{2}</span>'.format(
+    relative ? ' relative' : '',
+    dt.getTime() / 1000,
+    moment(dt).tz(tz).format(format),
+  );
+}
+
+export function* paginate(page: number, numPages: number) {
+  const radius = 5;
+  let first: number;
+  let last: number;
+  if (page > 1) {
+    if (page > 2) yield ['first', 1];
+    yield ['previous', page - 1];
+  }
+  if (page <= radius) [first, last] = [1, Math.min(1 + radius * 2, numPages)];
+  else if (page >= numPages - radius) {
+    [first, last] = [Math.max(1, numPages - radius * 2), numPages];
+  } else {
+    [first, last] = [page - radius, page + radius];
+  }
+  if (first > 1) yield ['ellipsis', 0];
+  for (let page0 = first; page0 < last + 1; page0++) {
+    if (page0 !== page) yield ['page', page0];
+    else yield ['current', page];
+  }
+  if (last < numPages) yield ['ellipsis', 0];
+  if (page < numPages) {
+    yield ['next', page + 1];
+    if (page < numPages - 1) yield ['last', numPages];
+  }
+}