# -*- coding: utf-8 -*-
"""
面向 reflex.state 的类
"""
from datetime import datetime
from enum import StrEnum
from typing import Any

from pydantic import BaseModel, Field, TypeAdapter
from pydantic_ai import RunUsage
from pydantic_ai._uuid import uuid7
from pydantic_ai.usage import UsageLimits


class TaskStatus(StrEnum):
    """
    任务状态枚举
    """

    RUNNING = "running"
    DONE = "done"
    PENDING_APPROVAL = "pending_approval"
    ERROR = "error"


class Task(BaseModel):
    """
    任务类
    """

    id: str = Field(default_factory=lambda: str(uuid7()), description="任务唯一标识")
    tool_name: str = Field(..., description="工具名称")
    tool_call_id: str = Field(..., description="工具调用唯一标识")
    status: TaskStatus = Field(default=TaskStatus.RUNNING, description="任务状态")
    title: str = Field(default="", description="任务标题")
    content: str = Field(default="", description="任务内容")


class MessageType(StrEnum):
    """
    消息类型枚举
    """

    USER_PROMPT = "user_prompt"
    THINKING = "thinking"
    WORK = "work"
    RESULT_OUTPUT = "result_output"


class Message(BaseModel):
    """
    消息类
    """

    id: str = Field(default_factory=lambda: str(uuid7()), description="消息唯一标识")
    type: MessageType = Field(..., description="消息类型")
    title: str = Field(default="", description="消息标题")
    content: str = Field(default="", description="消息内容")
    tasks: list[Task] = Field(default_factory=list, description="任务列表")
    is_running: bool = Field(
        default=False, description="正在运行，True 表示正在运行， False 表示运行结束"
    )
    is_shown: bool = Field(
        default=False, description="展示组件，True 表示展示，False 表示隐藏"
    )


class WorkType(StrEnum):
    """
    工作类型枚举
    """

    BOOK_FLIGHT = "预定航班"


class Work(BaseModel):
    """
    工作流类
    """

    type: WorkType = Field(..., description="工作类型")
    deps: Any = Field(default=None, description="工作依赖项")
    usage: RunUsage = Field(default=RunUsage(), description="工作使用量")
    usage_limits: UsageLimits | None = Field(
        default=None,
        description="工作使用量限制",
    )


class Conversation(BaseModel):
    """
    会话类
    """

    id: str = Field(..., description="会话唯一标识")
    description: str = Field(..., description="会话描述")
    work: Work | None = Field(default=None, description="工作")
    user_prompt: str = Field(default="", description="用户提示词")
    usage: dict[str, Any] = Field(..., description="会话使用量")
    messages: dict[str, Message] = Field(..., description="消息字典")
    created_at: datetime = Field(..., description="会话创建日期时间")
    is_running: bool = Field(
        default=False, description="正在运行，True 表示正在运行， False 表示运行结束"
    )
    awaiting_stream: bool = Field(
        default=False,
        description="等待流式输出，True 表示等待流式输出，False 表示已开始流式输出或已完成",
    )


class ConversationHistoryItem(BaseModel):
    """
    会话历史项类
    """

    id: str = Field(..., description="会话唯一标识")
    description: str = Field(..., description="会话描述")
    created_at: str = Field(..., description="会话创建日期时间")


class MessageHistoryItem(Message):
    """
    消息历史项类
    """


# Usage 适配器
UsageAdapter = TypeAdapter(RunUsage)


def usage_validate_python(usage: dict[str, Any]) -> RunUsage:
    """
    将 Usage 反序列化
    """
    if not usage:
        return RunUsage()
    return UsageAdapter.validate_python(usage)


def usage_dump_python(usage: RunUsage) -> dict[str, Any]:
    """
    将 Usage 序列化
    :param usage: 使用量
    :return: python 字典
    """
    return UsageAdapter.dump_python(usage)


# UsageLimits 适配器
UsageLimitsAdapter = TypeAdapter(UsageLimits)