LiJiLong/ai_learn_node
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This commit is contained in:
caoyuchun 2026-01-16 13:50:02 +08:00
parent a7c57bad7b
commit 80d465e85f
1 changed files with 19 additions and 9 deletions
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28
backend/src/services/pathService.ts
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@ -1,8 +1,13 @@
import { PrismaClient } from '@prisma/client'; import { PrismaClient, Prisma } from '@prisma/client';
import { CourseCategory, Difficulty } from '@ai-learning/shared'; import { CourseCategory, Difficulty } from '@ai-learning/shared';
const prisma = new PrismaClient(); const prisma = new PrismaClient();
// 定义包含 chapters 的 Course 类型
type CourseWithChapters = Prisma.CourseGetPayload<{
include: { chapters: true };
}>;
// 课程依赖关系映射 // 课程依赖关系映射
const courseDependencies: Record<string, string[]> = { const courseDependencies: Record<string, string[]> = {
'DEEP_LEARNING': ['ML_BASICS'], 'DEEP_LEARNING': ['ML_BASICS'],
@ -41,8 +46,8 @@ export async function generateLearningPath(
}); });
// 构建课程依赖图 // 构建课程依赖图
const courseMap = new Map(allCourses.map(c => [c.id, c])); const courseMap = new Map<string, CourseWithChapters>(allCourses.map((c: CourseWithChapters) => [c.id, c]));
const sortedCourses: typeof allCourses = []; const sortedCourses: CourseWithChapters[] = [];
const visited = new Set<string>(); const visited = new Set<string>();
const visiting = new Set<string>(); const visiting = new Set<string>();
@ -63,7 +68,7 @@ export async function generateLearningPath(
// 先访问依赖课程 // 先访问依赖课程
const deps = courseDependencies[course.category] || []; const deps = courseDependencies[course.category] || [];
for (const depCategory of deps) { for (const depCategory of deps) {
const depCourses = allCourses.filter(c => const depCourses = allCourses.filter((c: CourseWithChapters) =>
c.category === depCategory && c.category === depCategory &&
difficultyOrder[c.difficulty as keyof typeof difficultyOrder] <= difficultyOrder[c.difficulty as keyof typeof difficultyOrder] <=
difficultyOrder[course.difficulty as keyof typeof difficultyOrder] difficultyOrder[course.difficulty as keyof typeof difficultyOrder]
@ -80,7 +85,7 @@ export async function generateLearningPath(
// 对每个兴趣领域的课程进行排序 // 对每个兴趣领域的课程进行排序
for (const interest of interests) { for (const interest of interests) {
const interestCourses = allCourses.filter(c => c.category === interest); const interestCourses = allCourses.filter((c: CourseWithChapters) => c.category === interest);
for (const course of interestCourses) { for (const course of interestCourses) {
visit(course.id); visit(course.id);
} }
@ -88,7 +93,7 @@ export async function generateLearningPath(
// 过滤掉不符合当前水平的课程 // 过滤掉不符合当前水平的课程
const userLevel = difficultyOrder[currentLevel as keyof typeof difficultyOrder]; const userLevel = difficultyOrder[currentLevel as keyof typeof difficultyOrder];
const filteredCourses = sortedCourses.filter(course => { const filteredCourses = sortedCourses.filter((course: CourseWithChapters) => {
const courseLevel = difficultyOrder[course.difficulty as keyof typeof difficultyOrder]; const courseLevel = difficultyOrder[course.difficulty as keyof typeof difficultyOrder];
return courseLevel <= userLevel + 1; // 允许高一级的课程 return courseLevel <= userLevel + 1; // 允许高一级的课程
}); });
@ -103,8 +108,13 @@ export async function generateLearningPath(
description: pathDescription, description: pathDescription,
targetAudience: `水平: ${currentLevel}`, targetAudience: `水平: ${currentLevel}`,
pathItems: { pathItems: {
create: filteredCourses.flatMap((course, courseIndex) => { create: filteredCourses.flatMap((course: CourseWithChapters, courseIndex: number) => {
const items = []; const items: Array<{
courseId: string;
chapterId?: string;
order: number;
type: string;
}> = [];
// 添加课程节点 // 添加课程节点
items.push({ items.push({
courseId: course.id, courseId: course.id,
@ -112,7 +122,7 @@ export async function generateLearningPath(
type: 'course', type: 'course',
}); });
// 添加章节节点 // 添加章节节点
course.chapters.forEach((chapter, chapterIndex) => { course.chapters.forEach((chapter, chapterIndex: number) => {
items.push({ items.push({
courseId: course.id, courseId: course.id,
chapterId: chapter.id, chapterId: chapter.id,