#!/bin/bash
# Test UTC timestamp handling in Display Manager

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
PROJECT_ROOT="$(dirname "$SCRIPT_DIR")"
EVENT_FILE="$PROJECT_ROOT/src/current_event.json"

echo "🕐 UTC Timestamp Test for Display Manager"
echo "=========================================="
echo ""

# Get current UTC and local times
UTC_NOW=$(date -u '+%Y-%m-%d %H:%M:%S')
LOCAL_NOW=$(date '+%Y-%m-%d %H:%M:%S')
TIMEZONE=$(date +%Z)
UTC_OFFSET=$(date +%z)

echo "📅 Current Time Information:"
echo "   UTC Time:   $UTC_NOW"
echo "   Local Time: $LOCAL_NOW"
echo "   Timezone:   $TIMEZONE (UTC$UTC_OFFSET)"
echo ""

# Calculate timestamps for testing
# Start: 1 minute ago (UTC)
START_TIME=$(date -u -d '1 minute ago' '+%Y-%m-%d %H:%M:%S')
# End: 10 minutes from now (UTC)
END_TIME=$(date -u -d '10 minutes' '+%Y-%m-%d %H:%M:%S')

echo "🧪 Test Scenarios:"
echo ""
echo "1️⃣  Test Active Event (should display NOW)"
echo "   Create event with:"
echo "   - Start: $START_TIME UTC (1 minute ago)"
echo "   - End:   $END_TIME UTC (in 10 minutes)"
echo ""

read -p "Press Enter to create test event..." 

cat > "$EVENT_FILE" <<EOF
{
  "id": 998,
  "title": "UTC Test - Active Event",
  "start": "$START_TIME",
  "end": "$END_TIME",
  "web": {
    "url": "https://www.timeanddate.com/worldclock/timezone/utc"
  }
}
EOF

echo "✅ Created test event:"
cat "$EVENT_FILE" | jq .
echo ""
echo "⏱️  Display Manager should detect this as ACTIVE and start displaying"
echo "   Check the logs with: tail -f logs/display_manager.log"
echo ""

read -p "Press Enter to continue to next test..." 
echo ""

# Test 2: Event in the future
FUTURE_START=$(date -u -d '5 minutes' '+%Y-%m-%d %H:%M:%S')
FUTURE_END=$(date -u -d '15 minutes' '+%Y-%m-%d %H:%M:%S')

echo "2️⃣  Test Future Event (should NOT display yet)"
echo "   Create event with:"
echo "   - Start: $FUTURE_START UTC (in 5 minutes)"
echo "   - End:   $FUTURE_END UTC (in 15 minutes)"
echo ""

read -p "Press Enter to create future event..." 

cat > "$EVENT_FILE" <<EOF
{
  "id": 997,
  "title": "UTC Test - Future Event",
  "start": "$FUTURE_START",
  "end": "$FUTURE_END",
  "web": {
    "url": "https://www.timeanddate.com/worldclock/timezone/utc"
  }
}
EOF

echo "✅ Created future event:"
cat "$EVENT_FILE" | jq .
echo ""
echo "⏱️  Display Manager should detect this as NOT ACTIVE YET"
echo "   It should stop any current display"
echo "   Check logs: tail -f logs/display_manager.log"
echo ""

read -p "Press Enter to continue to next test..." 
echo ""

# Test 3: Event in the past
PAST_START=$(date -u -d '30 minutes ago' '+%Y-%m-%d %H:%M:%S')
PAST_END=$(date -u -d '20 minutes ago' '+%Y-%m-%d %H:%M:%S')

echo "3️⃣  Test Past Event (should NOT display - already ended)"
echo "   Create event with:"
echo "   - Start: $PAST_START UTC (30 minutes ago)"
echo "   - End:   $PAST_END UTC (20 minutes ago)"
echo ""

read -p "Press Enter to create past event..." 

cat > "$EVENT_FILE" <<EOF
{
  "id": 996,
  "title": "UTC Test - Past Event",
  "start": "$PAST_START",
  "end": "$PAST_END",
  "web": {
    "url": "https://www.timeanddate.com/worldclock/timezone/utc"
  }
}
EOF

echo "✅ Created past event:"
cat "$EVENT_FILE" | jq .
echo ""
echo "⏱️  Display Manager should detect this as ALREADY ENDED"
echo "   It should stop any current display"
echo "   Check logs: tail -f logs/display_manager.log"
echo ""

read -p "Press Enter to clean up..." 

# Clean up
rm -f "$EVENT_FILE"
echo ""
echo "🧹 Cleaned up test event file"
echo ""
echo "📊 Summary:"
echo "==========="
echo ""
echo "✅ Test 1: Active event (past start, future end) → Should DISPLAY"
echo "✅ Test 2: Future event (future start, future end) → Should NOT display yet"
echo "✅ Test 3: Past event (past start, past end) → Should NOT display"
echo ""
echo "📝 The Display Manager should now correctly handle UTC timestamps!"
echo ""
echo "💡 Tips for debugging:"
echo "   • Watch logs: tail -f logs/display_manager.log"
echo "   • Check timezone: date; date -u"
echo "   • The Display Manager logs show both UTC and comparison times"
echo ""