app/cloudflare/kv.py

"""
KV Storage integration for OpenManus
Provides interface to Cloudflare KV operations
"""

import json
from typing import Any, Dict, List, Optional

from app.logger import logger

from .client import CloudflareClient, CloudflareError


class KVStorage:
    """Cloudflare KV Storage client"""

    def __init__(
        self,
        client: CloudflareClient,
        sessions_namespace_id: str,
        cache_namespace_id: str,
    ):
        self.client = client
        self.sessions_namespace_id = sessions_namespace_id
        self.cache_namespace_id = cache_namespace_id
        self.base_endpoint = f"accounts/{client.account_id}/storage/kv/namespaces"

    def _get_namespace_id(self, namespace_type: str) -> str:
        """Get namespace ID based on type"""
        if namespace_type == "cache":
            return self.cache_namespace_id
        return self.sessions_namespace_id

    async def set_value(
        self,
        key: str,
        value: Any,
        namespace_type: str = "sessions",
        ttl: Optional[int] = None,
        use_worker: bool = True,
    ) -> Dict[str, Any]:
        """Set a value in KV store"""

        namespace_id = self._get_namespace_id(namespace_type)

        # Serialize value to JSON
        if isinstance(value, (dict, list)):
            serialized_value = json.dumps(value)
        elif isinstance(value, str):
            serialized_value = value
        else:
            serialized_value = json.dumps(value)

        try:
            if use_worker:
                set_data = {
                    "key": key,
                    "value": serialized_value,
                    "namespace": namespace_type,
                }

                if ttl:
                    set_data["ttl"] = ttl

                response = await self.client.post(
                    f"api/kv/set", data=set_data, use_worker=True
                )
            else:
                # Use KV API directly
                params = {}
                if ttl:
                    params["expiration_ttl"] = ttl

                query_string = "&".join([f"{k}={v}" for k, v in params.items()])
                endpoint = f"{self.base_endpoint}/{namespace_id}/values/{key}"
                if query_string:
                    endpoint += f"?{query_string}"

                response = await self.client.put(
                    endpoint, data={"value": serialized_value}
                )

            return {
                "success": True,
                "key": key,
                "namespace": namespace_type,
                "ttl": ttl,
                **response,
            }

        except CloudflareError as e:
            logger.error(f"KV set value failed: {e}")
            raise

    async def get_value(
        self,
        key: str,
        namespace_type: str = "sessions",
        parse_json: bool = True,
        use_worker: bool = True,
    ) -> Optional[Any]:
        """Get a value from KV store"""

        namespace_id = self._get_namespace_id(namespace_type)

        try:
            if use_worker:
                response = await self.client.get(
                    f"api/kv/get/{key}?namespace={namespace_type}", use_worker=True
                )

                if response and "value" in response:
                    value = response["value"]

                    if parse_json and isinstance(value, str):
                        try:
                            return json.loads(value)
                        except json.JSONDecodeError:
                            return value

                    return value
            else:
                response = await self.client.get(
                    f"{self.base_endpoint}/{namespace_id}/values/{key}"
                )

                # KV API returns the value directly as text
                value = (
                    response.get("result", {}).get("value")
                    if "result" in response
                    else response
                )

                if value and parse_json and isinstance(value, str):
                    try:
                        return json.loads(value)
                    except json.JSONDecodeError:
                        return value

                return value

        except CloudflareError as e:
            if e.status_code == 404:
                return None
            logger.error(f"KV get value failed: {e}")
            raise

        return None

    async def delete_value(
        self, key: str, namespace_type: str = "sessions", use_worker: bool = True
    ) -> Dict[str, Any]:
        """Delete a value from KV store"""

        namespace_id = self._get_namespace_id(namespace_type)

        try:
            if use_worker:
                response = await self.client.delete(
                    f"api/kv/delete/{key}?namespace={namespace_type}", use_worker=True
                )
            else:
                response = await self.client.delete(
                    f"{self.base_endpoint}/{namespace_id}/values/{key}"
                )

            return {
                "success": True,
                "key": key,
                "namespace": namespace_type,
                **response,
            }

        except CloudflareError as e:
            logger.error(f"KV delete value failed: {e}")
            raise

    async def list_keys(
        self,
        namespace_type: str = "sessions",
        prefix: str = "",
        limit: int = 1000,
        use_worker: bool = True,
    ) -> Dict[str, Any]:
        """List keys in KV namespace"""

        namespace_id = self._get_namespace_id(namespace_type)

        try:
            if use_worker:
                params = {"namespace": namespace_type, "prefix": prefix, "limit": limit}

                query_string = "&".join([f"{k}={v}" for k, v in params.items() if v])
                response = await self.client.get(
                    f"api/kv/list?{query_string}", use_worker=True
                )
            else:
                params = {"prefix": prefix, "limit": limit}

                query_string = "&".join([f"{k}={v}" for k, v in params.items() if v])
                response = await self.client.get(
                    f"{self.base_endpoint}/{namespace_id}/keys?{query_string}"
                )

            return {
                "namespace": namespace_type,
                "prefix": prefix,
                "keys": (
                    response.get("result", [])
                    if "result" in response
                    else response.get("keys", [])
                ),
                **response,
            }

        except CloudflareError as e:
            logger.error(f"KV list keys failed: {e}")
            raise

    # Session-specific methods
    async def set_session(
        self,
        session_id: str,
        session_data: Dict[str, Any],
        ttl: int = 86400,  # 24 hours default
    ) -> Dict[str, Any]:
        """Set session data"""

        data = {
            **session_data,
            "created_at": session_data.get("created_at", int(time.time())),
            "expires_at": int(time.time()) + ttl,
        }

        return await self.set_value(f"session:{session_id}", data, "sessions", ttl)

    async def get_session(self, session_id: str) -> Optional[Dict[str, Any]]:
        """Get session data"""

        session = await self.get_value(f"session:{session_id}", "sessions")

        if session and isinstance(session, dict):
            # Check if session is expired
            expires_at = session.get("expires_at")
            if expires_at and int(time.time()) > expires_at:
                await self.delete_session(session_id)
                return None

        return session

    async def delete_session(self, session_id: str) -> Dict[str, Any]:
        """Delete session data"""

        return await self.delete_value(f"session:{session_id}", "sessions")

    async def update_session(
        self, session_id: str, updates: Dict[str, Any], extend_ttl: Optional[int] = None
    ) -> Dict[str, Any]:
        """Update session data"""

        existing_session = await self.get_session(session_id)

        if not existing_session:
            raise CloudflareError("Session not found")

        updated_data = {**existing_session, **updates, "updated_at": int(time.time())}

        # Calculate TTL
        ttl = None
        if extend_ttl:
            ttl = extend_ttl
        elif existing_session.get("expires_at"):
            ttl = max(0, existing_session["expires_at"] - int(time.time()))

        return await self.set_session(session_id, updated_data, ttl or 86400)

    # Cache-specific methods
    async def set_cache(
        self, key: str, data: Any, ttl: int = 3600  # 1 hour default
    ) -> Dict[str, Any]:
        """Set cache data"""

        cache_data = {
            "data": data,
            "cached_at": int(time.time()),
            "expires_at": int(time.time()) + ttl,
        }

        return await self.set_value(f"cache:{key}", cache_data, "cache", ttl)

    async def get_cache(self, key: str) -> Optional[Any]:
        """Get cache data"""

        cached = await self.get_value(f"cache:{key}", "cache")

        if cached and isinstance(cached, dict):
            # Check if cache is expired
            expires_at = cached.get("expires_at")
            if expires_at and int(time.time()) > expires_at:
                await self.delete_cache(key)
                return None

            return cached.get("data")

        return cached

    async def delete_cache(self, key: str) -> Dict[str, Any]:
        """Delete cache data"""

        return await self.delete_value(f"cache:{key}", "cache")

    # User-specific methods
    async def set_user_cache(
        self, user_id: str, key: str, data: Any, ttl: int = 3600
    ) -> Dict[str, Any]:
        """Set user-specific cache"""

        user_key = f"user:{user_id}:{key}"
        return await self.set_cache(user_key, data, ttl)

    async def get_user_cache(self, user_id: str, key: str) -> Optional[Any]:
        """Get user-specific cache"""

        user_key = f"user:{user_id}:{key}"
        return await self.get_cache(user_key)

    async def delete_user_cache(self, user_id: str, key: str) -> Dict[str, Any]:
        """Delete user-specific cache"""

        user_key = f"user:{user_id}:{key}"
        return await self.delete_cache(user_key)

    async def get_user_cache_keys(self, user_id: str, limit: int = 100) -> List[str]:
        """Get all cache keys for a user"""

        result = await self.list_keys("cache", f"cache:user:{user_id}:", limit)

        keys = []
        for key_info in result.get("keys", []):
            if isinstance(key_info, dict):
                key = key_info.get("name", "")
            else:
                key = str(key_info)

            # Remove prefix to get the actual key
            if key.startswith(f"cache:user:{user_id}:"):
                clean_key = key.replace(f"cache:user:{user_id}:", "")
                keys.append(clean_key)

        return keys

    # Conversation caching
    async def cache_conversation(
        self,
        conversation_id: str,
        messages: List[Dict[str, Any]],
        ttl: int = 7200,  # 2 hours default
    ) -> Dict[str, Any]:
        """Cache conversation messages"""

        return await self.set_cache(
            f"conversation:{conversation_id}",
            {"messages": messages, "last_updated": int(time.time())},
            ttl,
        )

    async def get_cached_conversation(
        self, conversation_id: str
    ) -> Optional[Dict[str, Any]]:
        """Get cached conversation"""

        return await self.get_cache(f"conversation:{conversation_id}")

    # Agent execution caching
    async def cache_agent_execution(
        self, execution_id: str, execution_data: Dict[str, Any], ttl: int = 3600
    ) -> Dict[str, Any]:
        """Cache agent execution data"""

        return await self.set_cache(f"execution:{execution_id}", execution_data, ttl)

    async def get_cached_agent_execution(
        self, execution_id: str
    ) -> Optional[Dict[str, Any]]:
        """Get cached agent execution"""

        return await self.get_cache(f"execution:{execution_id}")

    # Batch operations
    async def set_batch(
        self,
        items: List[Dict[str, Any]],
        namespace_type: str = "cache",
        ttl: Optional[int] = None,
    ) -> Dict[str, Any]:
        """Set multiple values (simulated batch operation)"""

        results = []
        successful = 0
        failed = 0

        for item in items:
            try:
                key = item["key"]
                value = item["value"]
                item_ttl = item.get("ttl", ttl)

                result = await self.set_value(key, value, namespace_type, item_ttl)
                results.append({"key": key, "success": True, "result": result})
                successful += 1

            except Exception as e:
                results.append(
                    {"key": item.get("key"), "success": False, "error": str(e)}
                )
                failed += 1

        return {
            "success": failed == 0,
            "successful": successful,
            "failed": failed,
            "total": len(items),
            "results": results,
        }

    async def get_batch(
        self, keys: List[str], namespace_type: str = "cache"
    ) -> Dict[str, Any]:
        """Get multiple values (simulated batch operation)"""

        results = {}

        for key in keys:
            try:
                value = await self.get_value(key, namespace_type)
                results[key] = value
            except Exception as e:
                logger.error(f"Failed to get key {key}: {e}")
                results[key] = None

        return results

    def _hash_params(self, params: Dict[str, Any]) -> str:
        """Create a hash for cache keys from parameters"""

        if not params:
            return "no-params"

        # Simple hash function for cache keys
        import hashlib

        params_str = json.dumps(params, sort_keys=True)
        return hashlib.md5(params_str.encode()).hexdigest()[:16]


# Add time import at the top
import time