xuyueandClaude Opus 5.5
923f3efeca
- 班级筛选多一个取值 NO_CLASS（"none"），统计、方块串、流程图、提交列表都认；只圈普通学生， 老师管理员的号本来就不填班级，不挡的话试题的提交会算进去 - 切课时没填班级的号合在一起当一个班切（原来 class_name is null 直接排除，7 月 4 日那两节课看不到） - 没填班级不是真班：不列「还没交」，课上只写几人不写几人之几 - 「另有零散提交」每一项可点，进那个班那一整天 Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
128 lines
4.3 KiB
TypeScript
128 lines
4.3 KiB
TypeScript
import { TIME_ZONE_OFFSET_MINUTES } from "@oj2/contract"
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import { parseTime, zonedParts } from "utils/functions"
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const OFFSET_MS = TIME_ZONE_OFFSET_MINUTES * 60_000
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const HOUR = 3_600_000
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const DAY = 86_400_000
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/**
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* 统计页的时间段。课堂统计一般看一两节课（用户原话），所以这两档在最前面、
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* 默认「一节课」（用户定的）；后面几档是回头看。名字后面不写「1 小时内」：选框旁边
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* 本来就写着具体几点到几点。原来弹框里的 10 / 20 / 30 分钟是上课盯人用的，
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* 那件事现在归课堂看板。
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*/
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export const PERIOD_OPTIONS = [
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{ label: "一节课", value: "1h" },
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{ label: "两节课", value: "2h" },
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{ label: "今天", value: "today" },
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{ label: "最近 7 天", value: "7d" },
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{ label: "最近 30 天", value: "30d" },
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{ label: "这学期", value: "term" },
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{ label: "全部", value: "all" },
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{ label: "自己选日子", value: "custom" },
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] as const
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/**
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* `lesson`：从「一行一节课」点进某一节课，from / to 是那节课第一条、最后一条提交的时刻
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* （精确到毫秒，不是「自己选日子」那种按天）。它不在下拉里 —— 选中时下拉临时多出一项「那节课」
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*/
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export type Period = (typeof PERIOD_OPTIONS)[number]["value"] | "lesson"
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export const DEFAULT_PERIOD: Period = "1h"
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/** 东八区某天 0 点对应的 UTC 时刻 */
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function dayStartOf(year: number, month: number, day: number) {
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return Date.UTC(year, month - 1, day) - OFFSET_MS
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}
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/** 东八区某天（`2026-09-29`）0 点的真实时刻，毫秒 —— 点零散提交时拿它当「自己选日子」的起止 */
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export function dayStartOfDate(day: string) {
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const [year, month, date] = day.split("-").map(Number) as [number, number, number]
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return dayStartOf(year, month, date)
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}
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/** 东八区「现在」这一天的 0 点 */
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function todayStart(now: number) {
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const p = zonedParts(new Date(now))!
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return dayStartOf(p.year, p.month, p.day)
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}
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/**
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* 这学期从哪天起：9 月到次年 1 月算秋季学期（9 月 1 日起），2 到 8 月算春季（2 月 1 日起）。
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* 春季不从 3 月算：2 月下旬就开学了，按 3 月 1 日算的话开学头一两周「这学期」会把整个
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* 上学期和寒假都带进来
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*/
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function termStart(now: number) {
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const p = zonedParts(new Date(now))!
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if (p.month >= 9) return dayStartOf(p.year, 9, 1)
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if (p.month >= 2) return dayStartOf(p.year, 2, 1)
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return dayStartOf(p.year - 1, 9, 1)
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}
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/**
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* 时间段换成接口要的 start / end（ISO），外加一句给人看的范围。
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* `custom` 用的是 [开始日 0 点, 结束日 24 点)，两个都是 date picker 取回来的 UTC 时刻。
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*/
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export function periodRange(period: Period, custom: [number, number] | null, now = Date.now()) {
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let start: number | null
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let end = now
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switch (period) {
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case "1h":
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start = now - HOUR
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break
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case "2h":
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start = now - 2 * HOUR
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break
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case "today":
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start = todayStart(now)
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break
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case "7d":
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start = todayStart(now) - 6 * DAY
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break
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case "30d":
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start = todayStart(now) - 29 * DAY
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break
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case "term":
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start = termStart(now)
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break
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case "lesson":
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if (custom) {
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start = custom[0]
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end = custom[1]
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} else {
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start = now - HOUR
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}
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break
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case "custom":
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if (custom) {
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start = custom[0]
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end = custom[1] + DAY
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} else {
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start = todayStart(now)
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}
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break
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default:
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start = null
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}
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const text = describe(start, end, period)
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return {
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start: start === null ? undefined : new Date(start).toISOString(),
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end: new Date(end).toISOString(),
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text,
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/** 范围落在今天以内：提交列表那边能用「今天」接上 */
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withinToday: start !== null && start >= todayStart(now),
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}
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}
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function describe(start: number | null, end: number, period: Period) {
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if (start === null) return ""
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if (period === "1h" || period === "2h") {
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return `${parseTime(new Date(start), "HH:mm")}–${parseTime(new Date(end), "HH:mm")}`
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}
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if (period === "lesson") {
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return `${parseTime(new Date(start), "M月D日 HH:mm")}–${parseTime(new Date(end), "HH:mm")}`
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}
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const from = parseTime(new Date(start), "M月D日")
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const to = parseTime(new Date(end - 1), "M月D日")
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return from === to ? from : `${from}–${to}`
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}
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