Initial commit

scripts/patch-tv-tehran-tz.js

@@ -0,0 +1,79 @@
+/**
+ * Patch TradingView charting_library Asia/Tehran zone:
+ * Iran abolished DST in 2022 — permanently UTC+03:30 (12600s).
+ *
+ * IMPORTANT: TV binary-search returns -1 (→ offset 0 / UTC) when "now"
+ * is past the LAST transition. A single-entry zone breaks modern charts.
+ * Mirror Asia/Dubai: keep a far-future sentinel as the last time entry.
+ */
+const fs = require("fs");
+const path = require("path");
+
+// Both offsets 12600: permanent UTC+03:30 (no DST).
+// Sentinel ~2030 so current timestamps resolve to index 0/1 with +3:30, not UTC.
+const FIXED =
+  '"Asia/Tehran":{time:[-1704153600,1925006400],offset:[12600,12600]}';
+
+const FILES = [
+  path.resolve(
+    __dirname,
+    "../../Gereh/src/charting_library/static/bundles/library.e964cdc99937c68d0389.js"
+  ),
+  path.resolve(
+    __dirname,
+    "../../Gereh/public/charting_library/static/bundles/library.e964cdc99937c68d0389.js"
+  ),
+  path.resolve(
+    __dirname,
+    "../../Shahoo/public/charting_library/static/bundles/library.e964cdc99937c68d0389.js"
+  ),
+  path.resolve(
+    __dirname,
+    "../../Shahoo/src/features/Market/MainComponents/TVChartContainer/charting_library/static/bundles/library.e964cdc99937c68d0389.js"
+  ),
+];
+
+function extractTehran(s) {
+  const key = '"Asia/Tehran":{';
+  const i = s.indexOf(key);
+  if (i < 0) return null;
+  let depth = 0;
+  let end = -1;
+  for (let j = i + key.length - 1; j < s.length; j++) {
+    if (s[j] === "{") depth++;
+    else if (s[j] === "}") {
+      depth--;
+      if (depth === 0) {
+        end = j + 1;
+        break;
+      }
+    }
+  }
+  if (end < 0) return null;
+  return { start: i, end, text: s.slice(i, end) };
+}
+
+let patched = 0;
+for (const file of FILES) {
+  if (!fs.existsSync(file)) {
+    console.log("skip missing:", file);
+    continue;
+  }
+  const src = fs.readFileSync(file, "utf8");
+  const hit = extractTehran(src);
+  if (!hit) {
+    console.log("skip no Tehran:", file);
+    continue;
+  }
+  if (hit.text === FIXED) {
+    console.log("already patched:", file);
+    continue;
+  }
+  fs.writeFileSync(file, src.slice(0, hit.start) + FIXED + src.slice(hit.end));
+  console.log("patched:", path.relative(process.cwd(), file));
+  console.log("  was:", hit.text);
+  console.log("  now:", FIXED);
+  patched++;
+}
+
+console.log("done, patched", patched, "file(s)");