"""
Quick Mode 任务 Schema

小白用户一键训练模式的请求/响应模型

参考文档: development.md 4.6.1 + 4.6.3
"""

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


class InferenceOptions(BaseModel):
    """
    推理选项（可选）
    
    训练完成后进行推理测试的配置。如果不提供，将使用默认值自动进行推理。
    
    Attributes:
        enabled: 是否启用推理阶段
        ref_audio_path: 参考音频路径，不提供则使用训练音频的切片
        ref_text: 参考音频的文本，不提供则从 ASR 结果自动获取
        target_text: 要合成的目标文本
    """
    enabled: bool = Field(
        default=True,
        description="是否启用推理阶段，默认启用"
    )
    ref_audio_path: Optional[str] = Field(
        default=None,
        description="参考音频路径，不提供则自动使用训练音频的切片"
    )
    ref_text: Optional[str] = Field(
        default=None,
        description="参考音频的文本，不提供则从 ASR 结果自动获取"
    )
    target_text: str = Field(
        default="这是一段测试语音合成的文本。",
        description="要合成的目标文本"
    )
    
    model_config = {
        "json_schema_extra": {
            "examples": [
                {
                    "enabled": True,
                    "ref_audio_path": None,
                    "ref_text": None,
                    "target_text": "这是一段测试语音合成的文本。"
                }
            ]
        }
    }


class QuickModeOptions(BaseModel):
    """
    Quick Mode 训练选项
    
    用于一键训练时的简化参数配置
    
    Attributes:
        version: 模型版本
        language: 训练语言
        quality: 训练质量预设
        
    质量预设说明:
        - fast: SoVITS 4 epochs, GPT 8 epochs, ~10分钟
        - standard: SoVITS 8 epochs, GPT 15 epochs, ~20分钟
        - high: SoVITS 16 epochs, GPT 30 epochs, ~40分钟
    """
    version: Literal["v1", "v2", "v2Pro", "v3", "v4"] = Field(
        default="v2",
        description="模型版本"
    )
    language: Literal["zh", "en", "ja", "ko", "yue"] = Field(
        default="zh",
        description="训练语言：zh(中文)、en(英语)、ja(日语)、ko(韩语)、yue(粤语)"
    )
    quality: Literal["fast", "standard", "high"] = Field(
        default="standard",
        description="训练质量预设：fast(快速)、standard(标准)、high(高质量)"
    )
    inference: Optional[InferenceOptions] = Field(
        default=None,
        description="推理配置，不提供则使用默认配置自动推理"
    )
    
    model_config = {
        "json_schema_extra": {
            "examples": [
                {
                    "version": "v2",
                    "language": "zh",
                    "quality": "standard",
                    "inference": {
                        "enabled": True,
                        "target_text": "这是一段测试语音合成的文本。"
                    }
                }
            ]
        }
    }


class QuickModeRequest(BaseModel):
    """
    小白用户一键训练请求
    
    创建一键训练任务，系统自动配置所有参数并执行完整流程:
    audio_slice -> asr -> text_feature -> hubert_feature -> semantic_token -> sovits_train -> gpt_train -> inference
    
    Attributes:
        exp_name: 实验名称（用于标识训练任务）
        audio_file_id: 已上传音频文件的 ID
        options: 训练选项（包含推理配置）
    """
    exp_name: str = Field(
        ...,
        min_length=1,
        max_length=100,
        description="实验名称，用于标识训练任务和生成的模型"
    )
    audio_file_id: str = Field(
        ...,
        description="已上传音频文件的 ID"
    )
    options: QuickModeOptions = Field(
        default_factory=QuickModeOptions,
        description="训练选项"
    )
    
    model_config = {
        "json_schema_extra": {
            "examples": [
                {
                    "exp_name": "my_voice",
                    "audio_file_id": "550e8400-e29b-41d4-a716-446655440000",
                    "options": {
                        "version": "v2",
                        "language": "zh",
                        "quality": "standard"
                    }
                }
            ]
        }
    }


class TaskResponse(BaseModel):
    """
    任务响应（Quick Mode）
    
    返回任务的完整状态信息，包括进度、当前阶段等
    
    Attributes:
        id: 任务唯一标识
        exp_name: 实验名称
        status: 任务状态
        current_stage: 当前执行的阶段
        progress: 当前阶段进度 (0.0-1.0)
        overall_progress: 总体进度 (0.0-1.0)
        message: 最新状态消息
        error_message: 错误消息（失败时）
        created_at: 任务创建时间
        started_at: 任务开始执行时间
        completed_at: 任务完成时间
    """
    id: str = Field(..., description="任务唯一标识")
    exp_name: str = Field(..., description="实验名称")
    status: Literal["queued", "running", "completed", "failed", "cancelled", "interrupted"] = Field(
        ...,
        description="任务状态"
    )
    current_stage: Optional[str] = Field(
        default=None,
        description="当前执行的阶段，如 'audio_slice', 'sovits_train' 等"
    )
    progress: float = Field(
        default=0.0,
        ge=0.0,
        le=1.0,
        description="当前阶段进度 (0.0-1.0)"
    )
    overall_progress: float = Field(
        default=0.0,
        ge=0.0,
        le=1.0,
        description="总体进度 (0.0-1.0)"
    )
    message: Optional[str] = Field(
        default=None,
        description="最新状态消息"
    )
    error_message: Optional[str] = Field(
        default=None,
        description="错误消息（失败时）"
    )
    created_at: Optional[datetime] = Field(
        default=None,
        description="任务创建时间"
    )
    started_at: Optional[datetime] = Field(
        default=None,
        description="任务开始执行时间"
    )
    completed_at: Optional[datetime] = Field(
        default=None,
        description="任务完成时间"
    )
    
    model_config = {
        "from_attributes": True,
        "json_schema_extra": {
            "examples": [
                {
                    "id": "task-550e8400-e29b-41d4-a716-446655440000",
                    "exp_name": "my_voice",
                    "status": "running",
                    "current_stage": "sovits_train",
                    "progress": 0.45,
                    "overall_progress": 0.72,
                    "message": "SoVITS 训练中 Epoch 8/16",
                    "error_message": None,
                    "created_at": "2024-01-01T10:00:00Z",
                    "started_at": "2024-01-01T10:00:05Z",
                    "completed_at": None
                }
            ]
        }
    }


class TaskListResponse(BaseModel):
    """
    任务列表响应
    
    Attributes:
        items: 任务列表
        total: 总数量
        limit: 每页数量
        offset: 偏移量
    """
    items: List[TaskResponse] = Field(
        default_factory=list,
        description="任务列表"
    )
    total: int = Field(
        default=0,
        ge=0,
        description="总数量"
    )
    limit: int = Field(
        default=50,
        ge=1,
        le=100,
        description="每页数量"
    )
    offset: int = Field(
        default=0,
        ge=0,
        description="偏移量"
    )
    
    model_config = {
        "json_schema_extra": {
            "examples": [
                {
                    "items": [
                        {
                            "id": "task-123",
                            "exp_name": "voice_1",
                            "status": "completed",
                            "current_stage": None,
                            "progress": 1.0,
                            "overall_progress": 1.0,
                            "message": "训练完成"
                        }
                    ],
                    "total": 1,
                    "limit": 50,
                    "offset": 0
                }
            ]
        }
    }


class InferenceOutputItem(BaseModel):
    """
    推理输出项
    
    表示一个推理生成的音频文件的元信息
    
    Attributes:
        filename: 文件名
        gpt_model: 使用的 GPT 模型名称
        sovits_model: 使用的 SoVITS 模型名称
        gpt_path: GPT 模型完整路径
        sovits_path: SoVITS 模型完整路径
        file_path: 文件相对路径
        size_bytes: 文件大小（字节）
        created_at: 创建时间
    """
    filename: str = Field(..., description="文件名")
    gpt_model: str = Field(..., description="使用的 GPT 模型名称")
    sovits_model: str = Field(..., description="使用的 SoVITS 模型名称")
    gpt_path: str = Field(..., description="GPT 模型完整路径")
    sovits_path: str = Field(..., description="SoVITS 模型完整路径")
    file_path: str = Field(..., description="文件相对路径")
    size_bytes: int = Field(..., ge=0, description="文件大小（字节）")
    created_at: Optional[datetime] = Field(default=None, description="创建时间")
    
    model_config = {
        "json_schema_extra": {
            "examples": [
                {
                    "filename": "my_voice_gpt-my_voice_e15_s150-sovits_e8_s200.wav",
                    "gpt_model": "my_voice_e15_s150",
                    "sovits_model": "my_voice_e8_s200",
                    "gpt_path": "logs/my_voice/GPT_weights_v2/my_voice_e15_s150.ckpt",
                    "sovits_path": "logs/my_voice/SoVITS_weights_v2/my_voice_e8_s200.pth",
                    "file_path": "logs/my_voice/inference/my_voice_gpt-my_voice_e15_s150-sovits_e8_s200.wav",
                    "size_bytes": 102400,
                    "created_at": "2024-01-01T12:00:00Z"
                }
            ]
        }
    }


class InferenceOutputsResponse(BaseModel):
    """
    推理输出列表响应
    
    返回任务的所有推理输出文件列表
    
    Attributes:
        task_id: 任务 ID
        exp_name: 实验名称
        ref_text: 参考音频文本
        ref_audio_path: 参考音频路径
        target_text: 合成的目标文本
        outputs: 推理输出文件列表
        total: 总数量
    """
    task_id: str = Field(..., description="任务 ID")
    exp_name: str = Field(..., description="实验名称")
    ref_text: str = Field(default="", description="参考音频文本")
    ref_audio_path: str = Field(default="", description="参考音频路径")
    target_text: str = Field(default="", description="合成的目标文本")
    outputs: List[InferenceOutputItem] = Field(
        default_factory=list,
        description="推理输出文件列表"
    )
    total: int = Field(default=0, ge=0, description="总数量")
    
    model_config = {
        "json_schema_extra": {
            "examples": [
                {
                    "task_id": "task-123",
                    "exp_name": "my_voice",
                    "ref_text": "大家好，又到了复盘的时间，今天即使。",
                    "ref_audio_path": "logs/my_voice/slicer_opt/audio_0000012160_0000152320.wav",
                    "target_text": "这是一段测试语音合成的文本。",
                    "outputs": [
                        {
                            "filename": "my_voice_gpt-my_voice_e15_s150-sovits_e8_s200.wav",
                            "gpt_model": "my_voice_e15_s150",
                            "sovits_model": "my_voice_e8_s200",
                            "gpt_path": "logs/my_voice/GPT_weights_v2/my_voice_e15_s150.ckpt",
                            "sovits_path": "logs/my_voice/SoVITS_weights_v2/my_voice_e8_s200.pth",
                            "file_path": "logs/my_voice/inference/my_voice_gpt-my_voice_e15_s150-sovits_e8_s200.wav",
                            "size_bytes": 102400,
                            "created_at": "2024-01-01T12:00:00Z"
                        }
                    ],
                    "total": 1
                }
            ]
        }
    }