"""
DAARION Memory Service - Pydantic Models
"""
from datetime import datetime
from typing import Optional, List, Any
from uuid import UUID
from enum import Enum
from pydantic import BaseModel, Field


# ============================================================================
# ENUMS
# ============================================================================

class EventType(str, Enum):
    MESSAGE = "message"
    TOOL_CALL = "tool_call"
    TOOL_RESULT = "tool_result"
    DECISION = "decision"
    SUMMARY = "summary"
    MEMORY_WRITE = "memory_write"
    MEMORY_RETRACT = "memory_retract"
    ERROR = "error"


class MessageRole(str, Enum):
    USER = "user"
    ASSISTANT = "assistant"
    SYSTEM = "system"
    TOOL = "tool"


class MemoryCategory(str, Enum):
    PREFERENCE = "preference"
    IDENTITY = "identity"
    CONSTRAINT = "constraint"
    PROJECT_FACT = "project_fact"
    RELATIONSHIP = "relationship"
    SKILL = "skill"
    GOAL = "goal"
    CONTEXT = "context"
    FEEDBACK = "feedback"


class RetentionPolicy(str, Enum):
    PERMANENT = "permanent"
    SESSION = "session"
    TTL_DAYS = "ttl_days"
    UNTIL_REVOKED = "until_revoked"


class FeedbackAction(str, Enum):
    CONFIRM = "confirm"
    REJECT = "reject"
    EDIT = "edit"
    DELETE = "delete"


# ============================================================================
# REQUEST MODELS
# ============================================================================

class CreateThreadRequest(BaseModel):
    """Create new conversation thread"""
    org_id: UUID
    workspace_id: Optional[UUID] = None
    user_id: UUID
    agent_id: Optional[UUID] = None
    title: Optional[str] = None
    tags: List[str] = []
    metadata: dict = {}


class AddEventRequest(BaseModel):
    """Add event to conversation"""
    thread_id: UUID
    event_type: EventType
    role: Optional[MessageRole] = None
    content: Optional[str] = None
    tool_name: Optional[str] = None
    tool_input: Optional[dict] = None
    tool_output: Optional[dict] = None
    payload: dict = {}
    token_count: Optional[int] = None
    model_used: Optional[str] = None
    latency_ms: Optional[int] = None
    metadata: dict = {}


class CreateMemoryRequest(BaseModel):
    """Create long-term memory item"""
    org_id: UUID
    workspace_id: Optional[UUID] = None
    user_id: UUID
    agent_id: Optional[UUID] = None  # null = global
    category: MemoryCategory
    fact_text: str
    confidence: float = Field(default=0.8, ge=0, le=1)
    source_event_id: Optional[UUID] = None
    source_thread_id: Optional[UUID] = None
    extraction_method: str = "explicit"
    is_sensitive: bool = False
    retention: RetentionPolicy = RetentionPolicy.UNTIL_REVOKED
    ttl_days: Optional[int] = None
    tags: List[str] = []
    metadata: dict = {}


class MemoryFeedbackRequest(BaseModel):
    """User feedback on memory"""
    memory_id: UUID
    user_id: UUID
    action: FeedbackAction
    new_value: Optional[str] = None
    reason: Optional[str] = None


class RetrievalRequest(BaseModel):
    """Semantic retrieval request"""
    org_id: UUID
    user_id: UUID
    agent_id: Optional[UUID] = None
    workspace_id: Optional[UUID] = None
    queries: List[str]
    top_k: int = 10
    min_confidence: float = 0.5
    include_global: bool = True
    categories: Optional[List[MemoryCategory]] = None


class SummaryRequest(BaseModel):
    """Generate summary for thread"""
    thread_id: UUID
    force: bool = False  # force even if under token threshold


# ============================================================================
# RESPONSE MODELS
# ============================================================================

class ThreadResponse(BaseModel):
    thread_id: UUID
    org_id: UUID
    workspace_id: Optional[UUID]
    user_id: UUID
    agent_id: Optional[UUID]
    title: Optional[str]
    status: str
    message_count: int
    total_tokens: int
    created_at: datetime
    last_activity_at: datetime


class EventResponse(BaseModel):
    event_id: UUID
    thread_id: UUID
    event_type: EventType
    role: Optional[MessageRole]
    content: Optional[str]
    tool_name: Optional[str]
    tool_input: Optional[dict]
    tool_output: Optional[dict]
    payload: dict
    token_count: Optional[int]
    sequence_num: int
    created_at: datetime


class MemoryResponse(BaseModel):
    memory_id: UUID
    org_id: UUID
    workspace_id: Optional[UUID]
    user_id: UUID
    agent_id: Optional[UUID]
    category: MemoryCategory
    fact_text: str
    confidence: float
    is_verified: bool
    is_sensitive: bool
    retention: RetentionPolicy
    valid_from: datetime
    valid_to: Optional[datetime]
    last_used_at: Optional[datetime]
    use_count: int
    created_at: datetime


class SummaryResponse(BaseModel):
    summary_id: UUID
    thread_id: UUID
    version: int
    summary_text: str
    state: dict
    events_count: int
    compression_ratio: Optional[float]
    created_at: datetime


class RetrievalResult(BaseModel):
    """Single retrieval result"""
    memory_id: UUID
    fact_text: str
    category: MemoryCategory
    confidence: float
    relevance_score: float
    agent_id: Optional[UUID]
    is_global: bool


class RetrievalResponse(BaseModel):
    """Retrieval response with results"""
    results: List[RetrievalResult]
    query_count: int
    total_results: int


class ContextResponse(BaseModel):
    """Full context for agent prompt"""
    thread_id: UUID
    summary: Optional[SummaryResponse]
    recent_messages: List[EventResponse]
    retrieved_memories: List[RetrievalResult]
    token_estimate: int


# ============================================================================
# INTERNAL MODELS
# ============================================================================

class EmbeddingRequest(BaseModel):
    """Internal embedding request"""
    texts: List[str]
    input_type: str = "search_document"  # or "search_query"


class QdrantPayload(BaseModel):
    """Qdrant point payload"""
    org_id: str
    workspace_id: Optional[str]
    user_id: str
    agent_id: Optional[str]
    thread_id: Optional[str]
    memory_id: Optional[str]
    event_id: Optional[str]
    type: str  # "memory", "summary", "message"
    category: Optional[str]
    text: str
    created_at: str