fix: Fix "Could not book the meeting" issue (fix-bookingIssue) (#12252)

Co-authored-by: gitstart-calcom <gitstart-calcom@users.noreply.github.com>

packages/lib/date-ranges.test.ts

@@ -179,6 +179,38 @@ describe("processWorkingHours", () => {
     expect(allDSTStartAt12).toBeTruthy();
     expect(allNotDSTStartAt13).toBeTruthy();
   });
+
+  it("should skip event if it ends before it starts (different days)", () => {
+    const item = {
+      days: [1, 2, 3],
+      startTime: new Date(new Date().setUTCHours(8, 0, 0, 0)), // 8 AM
+      endTime: new Date(new Date().setUTCHours(7, 0, 0, 0)), // 7 AM
+    };
+
+    const timeZone = "America/New_York";
+    const dateFrom = dayjs("2023-11-07T00:00:00Z").tz(timeZone); // 2023-11-07T00:00:00 (America/New_York)
+    const dateTo = dayjs("2023-11-08T00:00:00Z").tz(timeZone); // 2023-11-08T00:00:00 (America/New_York)
+
+    const results = processWorkingHours({ item, timeZone, dateFrom, dateTo });
+
+    expect(results).toEqual([]);
+  });
+
+  it("should skip event if it ends before it starts (same day but different hours)", () => {
+    const item = {
+      days: [1],
+      startTime: new Date(new Date().setUTCHours(8, 0, 0, 0)), // 8 AM
+      endTime: new Date(new Date().setUTCHours(7, 0, 0, 0)), // 7 AM
+    };
+
+    const timeZone = "America/New_York";
+    const dateFrom = dayjs("2023-11-07T00:00:00Z").tz(timeZone); // 2023-11-07T00:00:00 (America/New_York)
+    const dateTo = dayjs("2023-11-07T23:59:59Z").tz(timeZone); // 2023-11-07T23:59:59 (America/New_York)
+
+    const results = processWorkingHours({ item, timeZone, dateFrom, dateTo });
+
+    expect(results).toEqual([]);
+  });
 });
 
 describe("processDateOverrides", () => {

packages/lib/date-ranges.ts

@@ -47,7 +47,11 @@ export function processWorkingHours({
     const startResult = dayjs.max(start, dateFrom.tz(timeZone));
     const endResult = dayjs.min(end, dateTo.tz(timeZone));
 
-    if (startResult.isAfter(endResult)) {
+    const isLater =
+      startResult.isAfter(endResult, "hour") ||
+      (startResult.isSame(endResult, "hour") && startResult.isAfter(endResult, "minute"));
+
+    if (isLater) {
       // if an event ends before start, it's not a result.
       continue;
     }