from pydantic import BaseModel, Field
from typing import Optional, List, Dict
from datetime import datetime

from models.shot import ShotStatus
from models.task import TaskType, TaskStatus


class ShotBase(BaseModel):
    name: str = Field(..., min_length=1, max_length=255)
    description: Optional[str] = None
    frame_start: int = Field(default=1001, ge=1)
    frame_end: int = Field(default=1001, ge=1)
    status: ShotStatus = ShotStatus.NOT_STARTED
    project_id: Optional[int] = Field(None, description="Project ID - auto-populated from episode if not provided")


class ShotCreate(ShotBase):
    pass


class ShotUpdate(BaseModel):
    name: Optional[str] = Field(None, min_length=1, max_length=255)
    description: Optional[str] = None
    frame_start: Optional[int] = Field(None, ge=1)
    frame_end: Optional[int] = Field(None, ge=1)
    status: Optional[ShotStatus] = None
    project_id: Optional[int] = Field(None, description="Project ID - must match episode's project")


class ShotResponse(ShotBase):
    id: int
    project_id: int  # Make required in response
    episode_id: int
    created_at: datetime
    updated_at: datetime
    
    # Summary information
    task_count: int = 0
    
    # Optional computed field for display
    project_name: Optional[str] = Field(None, description="Project name for display purposes")

    class Config:
        from_attributes = True


class TaskStatusInfo(BaseModel):
    """Task status information for table display"""
    task_type: str  # String to support custom task types
    status: str  # Changed from TaskStatus enum to str to support custom statuses
    task_id: Optional[int] = None
    assigned_user_id: Optional[int] = None


class ShotListResponse(BaseModel):
    id: int
    name: str
    description: Optional[str] = None
    frame_start: int
    frame_end: int
    status: ShotStatus
    project_id: int
    episode_id: int
    created_at: datetime
    updated_at: datetime
    
    # Summary information
    task_count: int = 0
    
    # Optional computed field for display
    project_name: Optional[str] = Field(None, description="Project name for display purposes")
    
    # Task status information for table display
    task_status: Dict[str, Optional[str]] = Field(default_factory=dict, description="Task status by task type")
    task_details: List[TaskStatusInfo] = Field(default_factory=list, description="Detailed task information")

    class Config:
        from_attributes = True


class BulkShotCreate(BaseModel):
    """Schema for bulk shot creation with naming patterns"""
    name_prefix: str = Field(..., min_length=1, max_length=100)
    shot_count: int = Field(..., ge=1, le=1000)
    start_number: int = Field(default=10, ge=1)
    number_padding: int = Field(default=3, ge=1, le=6)
    frame_start: int = Field(default=1001, ge=1)
    frame_end: int = Field(default=1001, ge=1)
    description_template: Optional[str] = None
    create_default_tasks: bool = Field(default=True)
    task_types: Optional[List[str]] = None  # If None, use default shot task types (changed from TaskType to str)


class BulkShotResponse(BaseModel):
    """Response for bulk shot creation"""
    created_shots: List[ShotResponse]
    created_tasks_count: int = 0
    message: str