import datetime

def solve():
    # Scenario: User in Stockholm (UTC+2)
    # Local Wakeup Reference: 04:00
    # Actual Wakeup Time (UTC): 03:17
    
    offset_minutes = -120  # Stockholm UTC+2 -> getTimezoneOffset() is -120
    
    wakeup_ref_local = "04:00"
    wakeup_ref_mins_local = 4 * 60
    
    # Let's assume the backend calculates: wakeup_minutes = (UTC_wakeup - UTC_ref)
    # where it treats the provided ref as if it were in UTC.

    # Case 1: BUGGY (Frontend sends Local ref "04:00" to backend)
    # Backend treats 04:00 as UTC.
    utc_wakeup = 3 * 60 + 17 # 03:17 UTC
    wakeup_minutes_from_backend = utc_wakeup - wakeup_ref_mins_local # 197 - 240 = -43
    print(f"BUGGY: Backend returns wakeup_minutes (assuming ref 04:00 is UTC): {wakeup_minutes_from_backend}")
    
    # Frontend (current) tries to fix it with adjustForTimezone:
    received_wakeup_minutes = wakeup_minutes_from_backend 
    # offsetFromRef = getLocalOffsetFromReference(received, "04:00")
    #   localMins = adjustForTimezone(received) = received - offset_minutes
    #   offsetFromRef = localMins - ref_mins_local
    
    def adjustForTimezone(utc_min):
        return utc_min - offset_minutes

    def getLocalOffsetFromReference(utc_min, ref_mins):
        local_m = adjustForTimezone(utc_min)
        return local_m - ref_mins

    offset_from_ref = getLocalOffsetFromReference(received_wakeup_minutes, wakeup_ref_mins_local)
    print(f"BUGGY: Frontend calculates offsetFromRef: {offset_from_ref}")
    # formatMinutesAfter(offset, ref) -> ref + offset
    print(f"BUGGY: Displayed time (ref + offset): {wakeup_ref_mins_local + offset_from_ref}")

    # Case 2: CORRECT (Frontend sends UTC ref "02:00" to backend)
    # Stockholm +2 means 04:00 Local is 02:00 UTC.
    utc_wakeup_ref = wakeup_ref_mins_local + offset_minutes # 240 - 120 = 120
    wakeup_minutes_from_backend_correct = utc_wakeup - utc_wakeup_ref # 197 - 120 = 77
    print(f"\nCORRECT: Backend returns wakeup_minutes (assuming ref 02:00 is UTC): {wakeup_minutes_from_backend_correct}")
    
    # Frontend receives 77.
    # If it's a delta, the component should use it directly as offsetFromRef.
    # Or if we want to keep existing logic, we have to realize 77 is ALREADY the delta.
    # But the component thinks it's "minutes from midnight". 
    # This is a mismatch.
    
    print("---")
    print(f"Target Local Wakeup: 05:17 ({3 * 60 + 17 + abs(offset_minutes)})")
    print(f"Target Local Ref: 04:00 ({wakeup_ref_mins_local})")
    print(f"Target Local Delta: {317 - 240} = 77")

solve()