first commit

api/serializers.py

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+from rest_framework import serializers
+from monitor.models import BitcoinPrice, MarketAnalysis
+from django.utils import timezone
+
+
+class BitcoinPriceSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = BitcoinPrice
+        fields = ['id', 'timestamp', 'price_usd', 'volume', 'market_cap']
+    
+    def to_representation(self, instance):
+        # Convert Decimal to float for JSON
+        data = super().to_representation(instance)
+        data['price_usd'] = float(data['price_usd'])
+        if data['volume']:
+            data['volume'] = float(data['volume'])
+        if data['market_cap']:
+            data['market_cap'] = float(data['market_cap'])
+        return data
+
+
+class MarketAnalysisSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = MarketAnalysis
+        fields = ['id', 'timestamp', 'period', 'current_price', 'average_price', 
+                 'min_price', 'max_price', 'status', 'threshold_percent',
+                 'lower_threshold', 'upper_threshold', 'is_event', 'event_type']
+    
+    def to_representation(self, instance):
+        # Convert Decimal to float for JSON
+        data = super().to_representation(instance)
+        decimal_fields = ['current_price', 'average_price', 'min_price', 'max_price',
+                         'threshold_percent', 'lower_threshold', 'upper_threshold']
+        for field in decimal_fields:
+            if field in data and data[field]:
+                data[field] = float(data[field])
+        return data
+
+
+class StatusResponseSerializer(serializers.Serializer):
+    """Serializer for status API endpoint."""
+    current_price = serializers.FloatField()
+    current_status = serializers.CharField()
+    yearly_average = serializers.FloatField()
+    yearly_min = serializers.FloatField()
+    yearly_max = serializers.FloatField()
+    threshold_percent = serializers.FloatField()
+    lower_threshold = serializers.FloatField()
+    upper_threshold = serializers.FloatField()
+    last_yearly_update = serializers.DateTimeField(allow_null=True)
+    last_hourly_update = serializers.DateTimeField(allow_null=True)
+    stale_yearly = serializers.BooleanField()
+    stale_hourly = serializers.BooleanField()
+    fetch_error = serializers.CharField(allow_null=True, allow_blank=True)
+
+
+class ChartDataSerializer(serializers.Serializer):
+    """Serializer for chart data API endpoint."""
+    timestamps = serializers.ListField(child=serializers.DateTimeField())
+    prices = serializers.ListField(child=serializers.FloatField())
+    events = MarketAnalysisSerializer(many=True)
+    threshold_percent = serializers.FloatField()
+
+
+class HealthCheckSerializer(serializers.Serializer):
+    """Serializer for health check endpoint."""
+    status = serializers.CharField()
+    timestamp = serializers.DateTimeField()
+    checks = serializers.DictField()