import logging
import os
import traceback
import uuid
from datetime import datetime
from typing import Dict, Any, Optional, List, Union

from pydantic import BaseModel, Field, ConfigDict

from aworld.output.artifact import ArtifactType, Artifact
from aworld.output.code_artifact import CodeArtifact
from aworld.output.storage.artifact_repository import ArtifactRepository, LocalArtifactRepository
from aworld.output.observer import WorkspaceObserver, get_observer
from aworld.output.storage.oss_artifact_repository import OSSArtifactRepository


class WorkSpace(BaseModel):
    """
    Artifact workspace, managing a group of related artifacts
    
    Provides collaborative editing features, supporting version management, update notifications, etc. for multiple Artifacts
    """

    workspace_id: str = Field(default_factory=lambda: str(uuid.uuid4()), description="unique identifier for the workspace")
    name: str = Field(default="", description="name of the workspace")
    created_at: str = Field(default_factory=lambda: datetime.now().isoformat())
    updated_at: str = Field(default_factory=lambda: datetime.now().isoformat())
    metadata: Dict[str, Any] = Field(default={}, description="metadata")
    artifacts: List[Artifact] = Field(default=[], description="list of artifacts")

    artifact_id_index: Dict[str, int] = Field(default={}, description="artifact id index", exclude=True)
    observers: Optional[List[WorkspaceObserver]] = Field(default=[], description="list of observers", exclude=True)
    repository: Optional[ArtifactRepository] = Field(default=None, description="local artifact repository", exclude=True)

    model_config = ConfigDict(arbitrary_types_allowed=True)
    
    def __init__(
            self,
            workspace_id: Optional[str] = None,
            name: Optional[str] = None,
            storage_path: Optional[str] = None,
            observers: Optional[List[WorkspaceObserver]] = None,
            use_default_observer: bool = True,
            clear_existing: bool = False,
            repository: Optional[ArtifactRepository] = None
    ):
        super().__init__()
        self.workspace_id = workspace_id or str(uuid.uuid4())
        self.name = name or f"Workspace-{self.workspace_id[:8]}"
        self.created_at = datetime.now().isoformat()
        self.updated_at = self.created_at

        # Initialize repository first
        storage_dir = storage_path or os.path.join("data", "workspaces", self.workspace_id)
        if repository is None:
            self.repository = LocalArtifactRepository(storage_dir)
        else:
            self.repository = repository

        # Initialize artifacts and metadata
        if clear_existing:
            self.artifacts = []
            self.metadata = {}
        else:
            # Try to load existing workspace data
            workspace_data = self._load_workspace_data()
            if workspace_data:
                self.artifacts = workspace_data.get('artifacts', [])
                self.metadata = workspace_data.get('metadata', {})
                self.created_at = workspace_data.get('created_at', self.created_at)
                self.updated_at = workspace_data.get('updated_at', self.updated_at)
            else:
                self.artifacts = []
                self.metadata = {}

        # Build artifact_id_index after loading artifacts
        self._rebuild_artifact_id_index()

        # Initialize observers
        self.observers: List[WorkspaceObserver] = []
        if use_default_observer:
            self.observers.append(get_observer())

        if observers:
            for observer in observers:
                if observer not in self.observers:  # Avoid duplicates
                    self.add_observer(observer)

    def _load_workspace_data(self) -> Optional[Dict[str, Any]]:
        """
        Load workspace data from repository
        
        Returns:
            Dictionary containing workspace data if exists, None otherwise
        """
        try:
            # Get workspace versions

            workspace_data = self.repository.load_index()

            if not workspace_data:
                return None

            # Load artifacts
            artifacts = []
            # First load the artifacts list from workspace data
            workspace_artifacts = workspace_data.get("artifacts", [])
            for artifact_data in workspace_artifacts:
                artifact_id = artifact_data.get("artifact_id")
                if artifact_id:
                    artifact_data = self.repository.retrieve_latest_artifact(artifact_id)
                    if artifact_data:
                        artifacts.append(Artifact.from_dict(artifact_data))

            return {
                "artifacts": artifacts,
                "metadata": workspace_data.get("metadata", {}),
                "created_at": workspace_data.get("created_at"),
                "updated_at": workspace_data.get("updated_at")
            }
        except Exception as e:
            traceback.print_exc()
            print(f"Error loading workspace data: {e}")
            return None

    @classmethod
    def from_local_storages(cls, workspace_id: Optional[str] = None,
                            name: Optional[str] = None,
                            storage_path: Optional[str] = None,
                            observers: Optional[List[WorkspaceObserver]] = None,
                            use_default_observer: bool = True
                            ) -> "WorkSpace":
        """
        Create a workspace instance from local storage
        
        Args:
            workspace_id: Optional workspace ID
            name: Optional workspace name
            storage_path: Optional storage path
            observers: Optional list of observers
            use_default_observer: Whether to use default observer
            
        Returns:
            WorkSpace instance
        """
        if storage_path is None:
            storage_path = os.path.join("data", "workspaces", workspace_id)
        workspace = cls(
            workspace_id=workspace_id,
            name=name,
            storage_path=storage_path,
            observers=observers,
            use_default_observer=use_default_observer,
            clear_existing=False  # Always try to load existing data
        )
        return workspace

    @classmethod
    def from_oss_storages(cls,
                          workspace_id: Optional[str] = None,
                          name: Optional[str] = None,
                          storage_path: Optional[str] = "aworld/workspaces/",
                          observers: Optional[List[WorkspaceObserver]] = None,
                          use_default_observer: bool = True,
                          oss_config: Optional[Dict[str, Any]] = None,
                          ) -> "WorkSpace":
        if oss_config is None:
            oss_config = {
                "access_key_id": os.getenv("OSS_ACCESS_KEY_ID"),
                "access_key_secret": os.getenv("OSS_ACCESS_KEY_SECRET"),
                "endpoint": os.getenv("OSS_ENDPOINT"),
                "bucket_name": os.getenv("OSS_BUCKET_NAME"),
            }
        repository = OSSArtifactRepository(
            access_key_id=oss_config["access_key_id"],
            access_key_secret=oss_config["access_key_secret"],
            endpoint=oss_config["endpoint"],
            bucket_name=oss_config["bucket_name"],
            storage_path=storage_path
        )
        workspace = cls(
            workspace_id=workspace_id,
            name=name,
            storage_path=storage_path,
            observers=observers,
            use_default_observer=use_default_observer,
            repository=repository
        )
        return workspace

    async def create_artifact(
            self,
            artifact_type: Union[ArtifactType, str],
            artifact_id: Optional[str] = None,
            content: Optional[Any] = None,
            metadata: Optional[Dict[str, Any]] = None
    ) -> List[Artifact]:
        """
        Create a new artifact

        Args:
            artifact_type: Artifact type (enum or string)
            artifact_id: Optional artifact ID (will be generated if not provided)
            content: Artifact content
            metadata: Metadata dictionary

        Returns:
            List of created artifact objects
        """
        # If a string is passed, convert to enum type
        if isinstance(artifact_type, str):
            artifact_type = ArtifactType(artifact_type)

        # Create new artifacts
        artifacts = []

        # Ensure metadata is a dictionary
        if metadata is None:
            metadata = {}

        # Ensure artifact_id is a valid string
        if artifact_id is None:
            artifact_id = str(uuid.uuid4())

        if artifact_type == ArtifactType.CODE:
            artifacts = CodeArtifact.from_code_content(artifact_type, content)
        else:
            artifact = Artifact(
                artifact_id=artifact_id,
                artifact_type=artifact_type,
                content=content,
                metadata=metadata
            )
            artifacts.append(artifact)  # Add single artifact to the list

        # Add to workspace
        for artifact in artifacts:
            # Store in repository
            await self._store_artifact(artifact)
            logging.info(f"[📂WORKSPACE]💾 Storing artifact in repository: {artifact.artifact_id}")


        # Update workspace time
        self.updated_at = datetime.now().isoformat()

        # Save workspace state to create new version
        self.save()

        return artifacts  # Return the list of created artifacts

    async def add_artifact(
            self,
            artifact: Artifact
    ) -> None:
        """
        Create a new artifact

        Args:
            artifact: Artifact

        Returns:
            List of created artifact objects
        """

        # Store in repository
        await self._store_artifact(artifact)

        # Update workspace time
        self.updated_at = datetime.now().isoformat()

        # Save workspace state to create new version
        self.save()

        await self._notify_observers("create", artifact)

    async def mark_as_completed(self, artifact_id: str) -> None:
        """
        Mark an artifact as completed
        """
        artifact = self.get_artifact(artifact_id)
        if artifact:
            artifact.mark_complete()
            self.repository.store_artifact(artifact)
            logging.info(f"[📂WORKSPACE]🎉 Marking artifact as completed: {artifact_id}")
            await self._notify_observers("complete", artifact)
        self.save()

    def get_artifact(self, artifact_id: str) -> Optional[Artifact]:
        """Get artifact with the specified ID"""
        for artifact in self.artifacts:
            if artifact.artifact_id == artifact_id:
                return artifact
        return None


    def get_terminal(self) -> str:
        pass

    def get_webpage_groups(self) -> list[Any] | None:
        return self.list_artifacts(ArtifactType.WEB_PAGES)


    async def update_artifact(
            self,
            artifact_id: str,
            content: Any,
            description: str = "Content update"
    ) -> Optional[Artifact]:
        """
        Update artifact content
        
        Args:
            artifact_id: Artifact ID
            content: New content
            description: Update description
            
        Returns:
            Updated artifact, or None if it doesn't exist
        """
        artifact = self.get_artifact(artifact_id)
        if artifact:
            artifact.update_content(content, description)

            # Update storage
            await self._store_artifact(artifact)

            return artifact
        return None

    async def delete_artifact(self, artifact_id: str) -> bool:
        """
        Delete an artifact from the workspace
        
        Args:
            artifact_id: Artifact ID
            
        Returns:
            Whether deletion was successful
        """
        existed = self._check_artifact_exists(artifact_id)
        if not existed:
            return True
        for i, artifact in enumerate(self.artifacts):
            if artifact.artifact_id == artifact_id:
                # Remove from list
                self.artifacts.pop(i)

                # Update workspace time
                self.updated_at = datetime.now().isoformat()

                self.repository.delete_artifact(artifact_id)
                # Save workspace state to create new version
                self.save()

                # Notify observers
                await self._notify_observers("delete", artifact)
                return True
        return False

    def list_artifacts(self, filter_type: Optional[ArtifactType] = None) -> List[Artifact]:
        """
        List all artifacts in the workspace
        
        Args:
            filter_type: Optional filter type
            
        Returns:
            List of artifacts
        """
        if filter_type:
            return [a for a in self.artifacts if a.artifact_type == filter_type]
        return self.artifacts

    def add_observer(self, observer: WorkspaceObserver) -> None:
        """
        Add a workspace observer
        
        Args:
            observer: Observer object implementing WorkspaceObserver interface
        """
        if not isinstance(observer, WorkspaceObserver):
            raise TypeError("Observer must be an instance of WorkspaceObserver")
        self.observers.append(observer)

    def remove_observer(self, observer: WorkspaceObserver) -> None:
        """Remove an observer"""
        if observer in self.observers:
            self.observers.remove(observer)

    async def _notify_observers(self, operation: str, artifact: Artifact) -> List[Any]:
        """
        Notify all observers of workspace changes
        
        Args:
            operation: Type of operation (create, update, delete)
            artifact: Affected artifact
            
        Returns:
            List of results from handlers
        """
        results = []
        for observer in self.observers:
            try:
                if operation == "create":
                    result = await observer.on_create(workspace_id=self.workspace_id, artifact=artifact)
                    if result:
                        results.append(result)
                elif operation == "update":
                    result = await observer.on_update(workspace_id=self.workspace_id, artifact=artifact)
                    if result:
                        results.append(result)
                elif operation == "delete":
                    result = await observer.on_delete(workspace_id=self.workspace_id, artifact=artifact)
                    if result:
                        results.append(result)
            except Exception as e:
                print(f"Observer notification failed: {e}")
        return results
    
    def _check_artifact_exists(self, artifact_id: str) -> bool:
        return self.artifact_id_index.get(artifact_id, -1) >= 0


    def _append_artifact(self, artifact: Artifact) -> None:
        self.artifacts.append(artifact)
        logging.info(f"[📂WORKSPACE]🆕 Appending artifact in repository: {artifact.artifact_id}")


    def _update_artifact(self, artifact: Artifact) -> None:
        for i, a in enumerate(self.artifacts):
            if a.artifact_id == artifact.artifact_id:
                self.artifacts[i] = artifact
                logging.info(f"[📂WORKSPACE]🔄 Updating artifact in repository: {artifact.artifact_id}")
                break

    
    async def _store_artifact(self, artifact: Artifact) -> None:
        if self._check_artifact_exists(artifact.artifact_id):
            self._update_artifact(artifact)
            await self._notify_observers("update", artifact)
        else:
            self._append_artifact(artifact)
            await self._notify_observers("create", artifact)

        """Store artifact in repository"""
        artifact_data = artifact.to_dict()

        # Include complete version history
        artifact_data["version_history"] = artifact.version_history

        version_id = self.repository.store_artifact(artifact)

        # Store in repository
        artifact.current_version = version_id

    def save(self) -> None:
        """
        Save workspace state

        Returns:
            Workspace storage ID
        """
        workspace_data = {
            "workspace_id": self.workspace_id,
            "name": self.name,
            "created_at": self.created_at,
            "updated_at": self.updated_at,
            "metadata": self.metadata,
            "artifact_ids": [a.artifact_id for a in self.artifacts],
            "artifacts": [
                {
                    "artifact_id": a.artifact_id,
                    "type": str(a.artifact_type),
                    "metadata": a.metadata,
                    # "version": a.current_version
                } for a in self.artifacts
            ]
        }

        # Store workspace information with workspace_id in metadata
        self.repository.save_index(workspace_data)
        self._rebuild_artifact_id_index()

    def get_file_content_by_artifact_id(self, artifact_id: str) -> str:
        """
        Get concatenated content of all artifacts with the same filename.
        
        Args:
            artifact_id: artifact_id
            
        Returns:
            Raw unescaped concatenated content of all matching artifacts
        """
        filename = artifact_id
        for artifact in self.artifacts:
            if artifact.artifact_id == artifact_id:
                filename = artifact.metadata.get('filename')
                break

        result = ""
        for artifact in self.artifacts:
            if artifact.metadata.get('filename') == filename:
                if artifact.content:
                    result = result + artifact.content
        decoded_string = result.encode('utf-8').decode('unicode_escape')
        print(result)

        return decoded_string

    def generate_tree_data(self) -> Dict[str, Any]:
        """
        Generate a directory tree structure using the repository's implementation.
        Returns:
            A dictionary representing the directory tree.
        """
        return self.repository.generate_tree_data(self.name)

    def _rebuild_artifact_id_index(self) -> None:
        """
        Rebuild the artifact_id_index mapping artifact_id to its index in self.artifacts.
        """
        self.artifact_id_index = {artifact.artifact_id: idx for idx, artifact in enumerate(self.artifacts)}