from typing import Any, Dict, List, Optional

from pydantic import Field

from openenv.core.env_server.types import Action, Observation, State


class DataCleanAction(Action):
    """A string command for data cleaning operations.

    Supported commands:
        inspect("column_name") - View column statistics and issue hints
        fix(row, "column", "new_value") - Correct a cell value
        delete(row) - Remove a duplicate/invalid row
        submit() - Finalize and get scored
    """

    command: str = Field(
        ..., min_length=1, description="Command string to execute"
    )


class DataCleanObservation(Observation):
    """Observation returned after each step."""

    task_id: str = Field(default="")
    task_description: str = Field(default="")
    difficulty: str = Field(default="easy")
    data_preview: str = Field(default="", description="Formatted text table of current data")
    column_info: str = Field(default="", description="Column names, types, and stats")
    feedback: str = Field(default="", description="Result of last action")
    actions_remaining: int = Field(default=0)
    issues_found: int = Field(default=0)
    issues_fixed: int = Field(default=0)
    total_issues: int = Field(default=0)
    current_score: float = Field(default=0.0)
    action_history: List[str] = Field(default_factory=list)


class DataCleanState(State):
    """Full environment state."""

    task_id: str = Field(default="")
    difficulty: str = Field(default="easy")
    total_issues: int = Field(default=0)
    fixed_issues: int = Field(default=0)
    damaged_cells: int = Field(default=0)
    max_steps: int = Field(default=15)
    score: float = Field(default=0.0)