47 lines
1.3 KiB
TypeScript
47 lines
1.3 KiB
TypeScript
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import { db, EnrollmentStatus, PostType } from "@nicestack/common";
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// 更新课程评价统计
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export async function updateCourseReviewStats(courseId: string) {
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const reviews = await db.post.findMany({
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where: {
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courseId,
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type: PostType.COURSE_REVIEW,
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deletedAt: null
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},
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select: { rating: true }
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});
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const numberOfReviews = reviews.length;
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const averageRating = numberOfReviews > 0
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? reviews.reduce((sum, review) => sum + review.rating, 0) / numberOfReviews
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: 0;
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return db.course.update({
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where: { id: courseId },
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data: { numberOfReviews, averageRating }
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});
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}
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// 更新课程注册统计
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export async function updateCourseEnrollmentStats(courseId: string) {
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const completedEnrollments = await db.enrollment.count({
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where: {
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courseId,
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status: EnrollmentStatus.COMPLETED
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}
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});
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const totalEnrollments = await db.enrollment.count({
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where: { courseId }
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});
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const completionRate = totalEnrollments > 0
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? (completedEnrollments / totalEnrollments) * 100
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: 0;
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return db.course.update({
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where: { id: courseId },
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data: {
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numberOfStudents: totalEnrollments,
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completionRate
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}
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});
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}
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