97 lines
2.7 KiB
Python
97 lines
2.7 KiB
Python
"""在线课程：只有外链的视频/课程资源，与教材分表维护。"""
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from __future__ import annotations
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from fastapi import APIRouter, Depends, HTTPException
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from sqlalchemy.orm import Session
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from database import get_db
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from dependencies import get_current_user, require_permission
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from models import Course, User
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from schemas import CourseCreate, CourseOut, CourseUpdate
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router = APIRouter(prefix="/courses", tags=["courses"])
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def _load(db: Session, course_id: int) -> Course:
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course = db.get(Course, course_id)
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if course is None:
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raise HTTPException(status_code=404, detail="课程不存在")
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return course
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def _clean_url(url: str | None) -> str:
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url = (url or "").strip()
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if not url:
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raise HTTPException(status_code=400, detail="请填写课程链接")
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return url
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@router.get("", response_model=list[CourseOut])
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def list_courses(
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db: Session = Depends(get_db),
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_: User = Depends(get_current_user),
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):
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return (
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db.query(Course)
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.order_by(Course.position.asc(), Course.id.asc())
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.all()
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)
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@router.post("", response_model=CourseOut)
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def create_course(
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payload: CourseCreate,
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db: Session = Depends(get_db),
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_: User = Depends(require_permission("catalog:manage")),
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):
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if db.query(Course).filter(Course.name == payload.name).first():
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raise HTTPException(status_code=400, detail="同名课程已存在")
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course = Course(
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name=payload.name,
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provider=payload.provider,
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url=_clean_url(payload.url),
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grade=payload.grade,
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description=payload.description,
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position=db.query(Course).count(),
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)
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db.add(course)
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db.commit()
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return course
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@router.put("/{course_id}", response_model=CourseOut)
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def update_course(
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course_id: int,
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payload: CourseUpdate,
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db: Session = Depends(get_db),
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_: User = Depends(require_permission("catalog:manage")),
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):
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course = _load(db, course_id)
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fields = payload.model_dump(exclude_unset=True)
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if "name" in fields and fields["name"] != course.name:
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exists = (
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db.query(Course)
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.filter(Course.name == fields["name"], Course.id != course.id)
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.first()
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)
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if exists:
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raise HTTPException(status_code=400, detail="同名课程已存在")
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if "url" in fields:
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fields["url"] = _clean_url(fields["url"])
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for field, value in fields.items():
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setattr(course, field, value)
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db.commit()
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return course
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@router.delete("/{course_id}")
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def delete_course(
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course_id: int,
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db: Session = Depends(get_db),
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_: User = Depends(require_permission("catalog:manage")),
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):
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course = _load(db, course_id)
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db.delete(course)
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db.commit()
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return {"deleted": course_id}
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