"""Pydantic models for the API."""

from enum import Enum
from typing import Any, Dict, List, Optional, Union

from pydantic import BaseModel, Field


class TaskDifficulty(str, Enum):
    EASY = "easy"
    MEDIUM = "medium"
    HARD = "hard"


class ActionType(str, Enum):
    EDIT_FILE = "edit_file"
    ADD_LINE = "add_line"
    DELETE_LINE = "delete_line"
    REPLACE_LINE = "replace_line"
    ADD_BLOCK = "add_block"
    DELETE_BLOCK = "delete_block"
    SUBMIT = "submit"
    REQUEST_HINT = "request_hint"


class TaskDifficultyExtended(str, Enum):
    EASY = "easy"
    MEDIUM = "medium"
    MEDIUM_HARD = "medium-hard"
    HARD = "hard"
    EXPERT = "expert"


class FileType(str, Enum):
    DOCKERFILE = "dockerfile"
    WORKFLOW = "workflow"
    DOCKER_COMPOSE = "docker_compose"
    REQUIREMENTS = "requirements"
    KUBERNETES = "kubernetes"
    OTHER = "other"


class ErrorPhase(str, Enum):
    WORKFLOW_PARSE = "workflow_parse"
    DOCKER_BUILD = "docker_build"
    DOCKER_RUN = "docker_run"
    TEST = "test"
    PUSH = "push"
    DEPLOY = "deploy"
    K8S_VALIDATION = "k8s_validation"
    K8S_RUNTIME = "k8s_runtime"
    K8S_NETWORKING = "k8s_networking"
    PIPELINE_BUILD = "pipeline_build"
    PIPELINE_DEPLOY = "pipeline_deploy"


class FileContent(BaseModel):
    path: str
    content: str
    file_type: FileType
    line_count: int


class ErrorInfo(BaseModel):
    phase: ErrorPhase
    error_message: str
    exit_code: Optional[int] = None
    failed_step: Optional[str] = None
    line_hint: Optional[int] = None


class Observation(BaseModel):
    task_id: str
    task_description: str
    difficulty: TaskDifficulty
    files: List[FileContent]
    error: ErrorInfo
    available_secrets: List[str] = Field(default_factory=list)
    runner_os: str = "ubuntu-latest"
    step_number: int
    max_steps: int
    hints_used: int = 0
    hints_available: int = 3
    last_action_success: Optional[bool] = None
    last_action_feedback: Optional[str] = None
    issues_found: int = 0
    issues_fixed: int = 0
    total_issues: int


class FileEdit(BaseModel):
    file_path: str
    line_number: Optional[int] = None
    old_content: Optional[str] = None
    new_content: Optional[str] = None


class Action(BaseModel):
    action_type: ActionType
    edits: Optional[List[FileEdit]] = None
    reasoning: Optional[str] = None



class TaskInfo(BaseModel):
    id: str
    name: str
    description: str
    difficulty: TaskDifficulty
    num_scenarios: int


class EnvironmentInfo(BaseModel):
    name: str = "cloud-native-devops-env"
    version: str = "1.0.0"
    description: str = "Debug cloud-native deployment pipeline issues"
    tasks: List[TaskInfo]
    max_steps: int = 10
    action_space: Dict[str, Any]
    observation_space: Dict[str, Any]


class GraderResult(BaseModel):
    task_id: str
    score: float = Field(..., gt=0.0, lt=1.0)
    max_score: float = 1.0
    breakdown: Dict[str, float] = Field(default_factory=dict)
    feedback: str = ""
    steps_taken: int
    hints_used: int = 0


class ResetRequest(BaseModel):
    task_id: Optional[Union[str, int]] = None
    scenario_id: Optional[str] = None
    seed: Optional[int] = None


class ResetResponse(BaseModel):
    observation: Observation
    info: Dict[str, Any] = Field(default_factory=dict)


class StepRequest(BaseModel):
    action: Action


class StepResponse(BaseModel):
    observation: Observation
    reward: float
    done: bool
    info: Dict[str, Any] = Field(default_factory=dict)


class StateResponse(BaseModel):
    observation: Observation
    episode_reward: float
    steps_taken: int
    done: bool


class GraderRequest(BaseModel):
    task_id: str
    trajectory: List[Dict[str, Any]]


class GraderResponse(BaseModel):
    result: GraderResult


class BaselineRequest(BaseModel):
    task_id: Optional[str] = None
    num_episodes: Optional[int] = None  # None = run ALL scenarios


class BaselineResponse(BaseModel):
    results: List[GraderResult]
    aggregate_score: float