xuyueandClaude Opus 5.5
195069450f
Deploy / deploy (push) Canceled after 0s
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
69 lines
2.8 KiB
TypeScript
69 lines
2.8 KiB
TypeScript
import { and, asc, eq, inArray, isNull, sql } from 'drizzle-orm'
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import { db, schema } from '../db'
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/** 「去做几道题」里优先推荐、要标出来的那批题挂的标签 */
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export const MUST_DO_TAG = '必会题'
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const PROJECT_RE = /\*\*所属项目[：:]\s*([^*\n]+)\*\*/
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/**
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* 从正文第一段的「**所属项目：项目三 · 智慧农业·蜜橘园**」抽出项目名，抽不到给空串。
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* 和 0031 迁移回填用的是同一个写法；发布脚本不传 `project` 时靠它。
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*/
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export function projectFromContent(content: string) {
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return (content.match(PROJECT_RE)?.[1] ?? '').trim().slice(0, 64)
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}
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/**
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* 放进 select 列表的关联子查询**一律手写表别名**：drizzle 在 select 列表里渲染列时
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* 会省掉表名，子查询里的 `"id"` 要么报 ambiguous，要么就近绑到子查询自己的表上 ——
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* 后一种不报错，只是数全错。外层表也写死成 `"problem"` / `"tutorial"`。
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*/
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/** 这道题带不带「必会题」标签，做成 select 里的一列 */
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export const mustDoColumn = sql<boolean>`exists (
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select 1 from "problem_tags" pt join "problem_tag" t on t."id" = pt."problemtag_id"
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where pt."problem_id" = "problem"."id" and t."name" = ${MUST_DO_TAG}
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)`
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/** 这道题的全部标签名 */
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export const problemTagNames = sql<string[]>`coalesce((
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select array_agg(t."name" order by t."name")
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from "problem_tags" pt join "problem_tag" t on t."id" = pt."problemtag_id"
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where pt."problem_id" = "problem"."id"
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), '{}')`
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/** 一课有几道练一练 / 挂了几道题 */
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export const exerciseCountColumn = sql<number>`(
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select count(*) from "exercise" e where e."tutorial_id" = "tutorial"."id"
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)`.mapWith(Number)
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export const problemCountColumn = sql<number>`(
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select count(*) from "tutorial_problem" tp where tp."tutorial_id" = "tutorial"."id"
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)`.mapWith(Number)
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/**
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* 几课各挂了哪些题，按老师排的顺序。`publicOnly` 给学生端用：没公开的题、比赛题不出现
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* （老师挑的时候公开、后来藏起来了的，学生点进去只会 404）。
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*/
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export async function tutorialProblems(tutorialIds: number[], publicOnly: boolean) {
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if (tutorialIds.length === 0) return []
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return db
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.select({
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tutorialId: schema.tutorialProblem.tutorialId,
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id: schema.problem.id,
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displayId: schema.problem.displayId,
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title: schema.problem.title,
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mustDo: mustDoColumn,
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})
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.from(schema.tutorialProblem)
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.innerJoin(schema.problem, eq(schema.problem.id, schema.tutorialProblem.problemId))
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.where(
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and(
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inArray(schema.tutorialProblem.tutorialId, tutorialIds),
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publicOnly ? and(eq(schema.problem.visible, true), isNull(schema.problem.contestId)) : undefined,
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),
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)
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.orderBy(asc(schema.tutorialProblem.tutorialId), asc(schema.tutorialProblem.order))
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}
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