from __future__ import annotations

from pydantic import BaseModel, Field


class OcrRecognizeLineRead(BaseModel):
    text: str = Field(description="识别出的文本行。")
    score: float = Field(default=0.0, ge=0.0, le=1.0, description="该行识别置信度。")
    box: list[list[int]] = Field(default_factory=list, description="文本框坐标。")
    page_index: int | None = Field(default=None, description="页码，从 0 开始。")


class OcrRecognizeFieldRead(BaseModel):
    key: str = Field(description="结构化字段键。")
    label: str = Field(description="结构化字段展示名。")
    value: str = Field(default="", description="结构化字段值。")


class OcrRecognizeDocumentRead(BaseModel):
    filename: str = Field(description="原始文件名。")
    media_type: str = Field(description="文件媒体类型。")
    engine: str = Field(default="paddleocr_mobile", description="使用的 OCR 引擎。")
    model: str = Field(default="PP-OCRv5_mobile", description="模型族标识。")
    text: str = Field(default="", description="合并后的完整 OCR 文本。")
    summary: str = Field(default="", description="供对话和语义层复用的简短摘要。")
    avg_score: float = Field(default=0.0, ge=0.0, le=1.0, description="平均识别置信度。")
    line_count: int = Field(default=0, ge=0, description="文本行数。")
    page_count: int = Field(default=1, ge=0, description="识别页数。")
    document_type: str = Field(default="other", description="识别出的票据类型编码。")
    document_type_label: str = Field(default="其他单据", description="识别出的票据类型名称。")
    scene_code: str = Field(default="other", description="识别出的票据场景编码。")
    scene_label: str = Field(default="其他票据", description="识别出的票据场景名称。")
    classification_source: str = Field(default="rule", description="票据类型判断来源，当前固定为 rule。")
    classification_confidence: float = Field(default=0.0, ge=0.0, le=1.0, description="票据类型判断置信度。")
    classification_evidence: list[str] = Field(default_factory=list, description="票据类型判断依据摘要。")
    document_fields: list[OcrRecognizeFieldRead] = Field(
        default_factory=list,
        description="识别出的结构化票据信息。",
    )
    preview_kind: str = Field(default="", description="预览类型，PDF 转图后通常为 image。")
    preview_data_url: str = Field(default="", description="用于前端展示的图片预览 data URL。")
    warnings: list[str] = Field(default_factory=list, description="该文件的识别提示或警告。")
    lines: list[OcrRecognizeLineRead] = Field(default_factory=list, description="逐行识别结果。")


class OcrRecognizeBatchRead(BaseModel):
    engine: str = Field(default="paddleocr_mobile", description="使用的 OCR 引擎。")
    model: str = Field(default="PP-OCRv5_mobile", description="模型族标识。")
    total_file_count: int = Field(default=0, ge=0, description="本次上传的总文件数。")
    success_count: int = Field(default=0, ge=0, description="成功进入 OCR 的文件数。")
    documents: list[OcrRecognizeDocumentRead] = Field(
        default_factory=list,
        description="逐文件 OCR 结果。",
    )