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# Source code for mindroot.coreplugins.usage.reporting

    from datetime import date, datetime
    from typing import Dict, Optional
    from .storage import UsageStorage

    class UsageReport:
        def __init__(self, storage: UsageStorage):
            self.storage = storage

        async def get_user_report(self, username: str,
                                start_date: Optional[date] = None,
                                end_date: Optional[date] = None) -> Dict:
            """Generate a complete usage report for a user"""
            usage_records = await self.storage.get_usage(username, start_date, end_date)
            total_cost = await self.storage.get_total_cost(username, start_date, end_date)

            # Group by plugin, cost type, and model
            grouped_usage = {}
            for record in usage_records:
                plugin_id = record['plugin_id']
                cost_type = record['cost_type_id']
                model_id = record.get('model_id')

                if plugin_id not in grouped_usage:
                    grouped_usage[plugin_id] = {}

                if cost_type not in grouped_usage[plugin_id]:
                    grouped_usage[plugin_id][cost_type] = {}

                model_key = model_id if model_id else '_default'
                if model_key not in grouped_usage[plugin_id][cost_type]:
                    grouped_usage[plugin_id][cost_type][model_key] = {
                        'total_quantity': 0,
                        'total_cost': 0.0,
                        'events': []
                    }

                group = grouped_usage[plugin_id][cost_type][model_key]
                group['total_quantity'] += record['quantity']
                group['total_cost'] += record.get('cost', 0.0)
                group['events'].append(record)

            return {
                'username': username,
                'start_date': start_date.isoformat() if start_date else None,
                'end_date': end_date.isoformat() if end_date else None,
                'total_cost': total_cost,
                'usage_by_plugin': grouped_usage,
                'raw_records': usage_records
            }

        async def get_cost_summary(self, username: str,
                                 start_date: Optional[date] = None,
                                 end_date: Optional[date] = None) -> Dict:
            """Generate a simplified cost summary for a user"""
            usage_records = await self.storage.get_usage(username, start_date, end_date)
            total_cost = await self.storage.get_total_cost(username, start_date, end_date)

            # Summarize by plugin and model
            plugin_costs = {}
            for record in usage_records:
                plugin_id = record['plugin_id']
                model_id = record.get('model_id', '_default')
                cost = record.get('cost', 0.0)

                if plugin_id not in plugin_costs:
                    plugin_costs[plugin_id] = {}

                if model_id not in plugin_costs[plugin_id]:
                    plugin_costs[plugin_id][model_id] = 0.0

                plugin_costs[plugin_id][model_id] += cost

            return {
                'username': username,
                'start_date': start_date.isoformat() if start_date else None,
                'end_date': end_date.isoformat() if end_date else None,
                'total_cost': total_cost,
                'costs_by_plugin': plugin_costs
            }

        async def get_daily_costs(self, username: str,
                                start_date: Optional[date] = None,
                                end_date: Optional[date] = None) -> Dict:
            """Generate daily cost breakdown for a user"""
            usage_records = await self.storage.get_usage(username, start_date, end_date)

            # Group by date, plugin, and model
            daily_costs = {}
            for record in usage_records:
                record_date = datetime.fromisoformat(record['timestamp']).date()
                date_str = record_date.isoformat()
                plugin_id = record['plugin_id']
                model_id = record.get('model_id', '_default')
                cost = record.get('cost', 0.0)

                if date_str not in daily_costs:
                    daily_costs[date_str] = {
                        'total': 0.0,
                        'by_plugin': {}
                    }

                if plugin_id not in daily_costs[date_str]['by_plugin']:
                    daily_costs[date_str]['by_plugin'][plugin_id] = {}

                if model_id not in daily_costs[date_str]['by_plugin'][plugin_id]:
                    daily_costs[date_str]['by_plugin'][plugin_id][model_id] = 0.0

                daily_costs[date_str]['total'] += cost
                daily_costs[date_str]['by_plugin'][plugin_id][model_id] += cost

            return {
                'username': username,
                'start_date': start_date.isoformat() if start_date else None,
                'end_date': end_date.isoformat() if end_date else None,
                'daily_costs': daily_costs
            }