zwt13703
55 lines
1.7 KiB
Python
55 lines
1.7 KiB
Python
"""模板相关业务逻辑"""
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from datetime import datetime
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from pathlib import Path
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from uuid import uuid4
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from fastapi import UploadFile
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from sqlalchemy.orm import Session
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from ..models.template import Template
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from .storage import upload_file
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ALLOWED_EXTENSIONS = {".docx"}
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MAX_FILE_SIZE = 50 * 1024 * 1024 # 50MB
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TEMPLATE_BUCKET = "templates"
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def validate_file(file: UploadFile):
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"""校验文件格式和大小"""
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if not file.filename:
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raise ValueError("文件名不能为空")
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ext = "." + file.filename.rsplit(".", 1)[-1].lower() if "." in file.filename else ""
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if ext not in ALLOWED_EXTENSIONS:
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raise ValueError(f"不支持的文件格式: {ext}，仅支持 .docx")
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# 读取文件头校验大小
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content = file.file.read()
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file.file.seek(0)
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if len(content) > MAX_FILE_SIZE:
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raise ValueError(f"文件大小超过限制 (50MB)")
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return content
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def build_template_file_path(filename: str) -> str:
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"""生成模板文件存储路径。"""
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suffix = Path(filename).suffix.lower()
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today = datetime.now().strftime("%Y%m%d")
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return f"{today}/{uuid4().hex}{suffix}"
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def store_template_file(file: UploadFile) -> tuple[str, bytes]:
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"""校验并保存上传的模板文件，返回存储路径和文件内容。"""
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content = validate_file(file)
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file_path = build_template_file_path(file.filename or "template.docx")
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stored_path = upload_file(TEMPLATE_BUCKET, file_path, content)
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return stored_path, content
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def create_template_record(db: Session, name: str, file_path: str, type: str = "report") -> Template:
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"""创建模板记录"""
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tmpl = Template(name=name, type=type, original_file_path=file_path)
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db.add(tmpl)
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db.commit()
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db.refresh(tmpl)
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return tmpl
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