"""
TaskSynchronizer
Generated by Eden via recursive self-improvement
2025-10-28 02:01:43.466877
"""

class TaskSynchronizer:
    """A class to synchronize recurring tasks across multiple task management sources.
    
    Attributes:
        sources (list): List of task management sources to synchronize with.
        max_retries (int): Maximum number of retry attempts for failed operations.
        log_changes (bool): Whether to keep track of changes made during synchronization.
        
    Methods:
        __init__(self, sources):
            Initializes the TaskSynchronizer with a list of task sources.
            
        fetch_tasks(self, source_id):
            Fetches recurring tasks from a specific source by ID.
            
        identify_duplicates(self, all_tasks):
            Identifies duplicate or near-duplicate tasks across different sources.
            
        merge_tasks(self, task_groups):
            Merges duplicate tasks into a single consolidated task entry.
            
        update_sources(self, merged_tasks):
            Updates all sources with the merged task list, ensuring consistency.
            
        sync_all(self):
            Performs full synchronization cycle: fetch, identify, merge, and update.
    """

    def __init__(self, sources):
        """Initializes the TaskSynchronizer with a list of task management sources."""
        self.sources = sources
        self.max_retries = 3
        self.log_changes = True
        self.change_log = []

    def fetch_tasks(self, source_id):
        """Fetches recurring tasks from a specific source by ID.
        
        Args:
            source_id (str): ID of the source to fetch tasks from.
            
        Returns:
            dict: Tasks for the given source with their details.
            
        Raises:
            ValueError: If source_id not found in sources.
            """
        # Mock implementation - replace with actual API calls
        for source in self.sources:
            if source['id'] == source_id:
                return {
                    'tasks': [
                        {'title': 'Daily Standup', 'due_date': '2023-10-10'},
                        {'title': 'Review Code', 'due_date': '2023-10-11'}
                    ],
                    'source_id': source_id
                }
        raise ValueError(f"Source with ID {source_id} not found.")

    def identify_duplicates(self, all_tasks):
        """Identifies duplicate or near-duplicate tasks across different sources.
        
        Args:
            all_tasks (list): List of all tasks from multiple sources.
            
        Returns:
            dict: Groups of duplicate tasks with their source information.
            """
        # Simplified hashing function for demonstration
        def task_hash(task):
            return f"{task['title']}_{task['due_date']}"

        task_groups = {}
        for task_group in all_tasks:
            group_hash = task_hash(task_group)
            if group_hash in task_groups:
                task_groups[group_hash].append(task_group)
            else:
                task_groups[group_hash] = [task_group]

        return {k: v for k, v in task_groups.items() if len(v) > 1}

    def merge_tasks(self, task_groups):
        """Merges duplicate tasks into a single consolidated task entry.
        
        Args:
            task_groups (dict): Groups of duplicate tasks to merge.
            
        Returns:
            list: Merged and consolidated tasks.
            """
        merged_tasks = []
        for group in task_groups.values():
            # Simple merging logic - take the first task as reference
            merged_task = group[0]
            # Add additional details from other instances
            merged_task['notes'] = "This task appears in multiple sources."
            merged_tasks.append(merged_task)
            
        return merged_tasks

    def update_sources(self, merged_tasks):
        """Updates all sources with the merged task list.
        
        Args:
            merged_tasks (list): List of tasks to synchronize across sources.
            """
        success = 0
        failures = 0
        
        for source in self.sources:
            try:
                # Mock implementation - replace with actual API calls
                print(f"Updating {source['name']} with {len(merged_tasks)} tasks.")
                success += 1
                if self.log_changes:
                    self.change_log.append(f"{source['name']} updated successfully")
            except Exception as e:
                failures += 1
                if self.log_changes:
                    self.change_log.append(f"Failed to update {source['name']}: {str(e)}")
        
        return (success, failures)

    def sync_all(self):
        """Performs full synchronization cycle: fetch, identify, merge, and update."""
        all_tasks = []
        
        # Step 1: Fetch tasks from all sources
        for source in self.sources:
            try:
                tasks = self.fetch_tasks(source['id'])
                all_tasks.extend(tasks['tasks'])
            except Exception as e:
                if self.log_changes:
                    self.change_log.append(f"Failed to fetch from {source['name']}: {str(e)}")
        
        # Step 2: Identify duplicates
        duplicates = self.identify_duplicates(all_tasks)
        
        # Step 3: Merge tasks
        merged_tasks = self.merge_tasks(duplicates)
        
        # Step 4: Update all sources
        update_result = self.update_sources(merged_tasks)
        
        return {
            'status': 'success',
            'summary': f"Synchronized {len(all_tasks)} tasks across {len(self.sources)} sources.",
            'updates': update_result,
            'log': self.change_log
        }

# Example usage:
if __name__ == "__main__":
    # Initialize with two mock sources (replace with actual)
    sources = [
        {'id': 'source_1', 'name': 'Calendar A'},
        {'id': 'source_2', 'name': 'Task Manager B'}
    ]
    
    synchronizer = TaskSynchronizer(sources)
    sync_result = synchronizer.sync_all()
    
    print("Synchronization Complete:")
    print(sync_result['summary'])
    print("\nChanges Log:")
    for entry in sync_result['log']:
        print(entry)