OJ2/apps/web/src/admin/problem/components/TestcaseGenerator.vue

<script setup lang="ts">
import type { LANGUAGE, Testcase } from "utils/types"
import { createZipBlob } from "utils/functions"
import { createTestSubmission } from "utils/judge"
import { uploadTestcases } from "../../api"

interface FileEntry {
  id: number
  in: string
  out: string
  error: boolean
}

interface Props {
  answers: { language: LANGUAGE; code: string }[]
  samples?: { input: string; output: string }[]
}

const props = defineProps<Props>()
const emit = defineEmits<{
  uploaded: [testCaseId: string, testCaseScore: Testcase[]]
}>()

const message = useMessage()

let nextId = 0

function makeInitialFiles(): FileEntry[] {
  const fromSamples = (props.samples ?? []).map((s) => ({
    id: nextId++,
    in: s.input,
    out: s.output,
    error: false,
  }))
  const total = Math.ceil(Math.max(fromSamples.length, 1) / 5) * 5
  const extra = total - fromSamples.length
  return [
    ...fromSamples,
    ...Array.from({ length: extra }, () => ({
      id: nextId++,
      in: "",
      out: "",
      error: false,
    })),
  ]
}

const files = ref<FileEntry[]>(makeInitialFiles())

const selectedLanguage = ref<LANGUAGE>("Python3")

// 始终显示所有语言，不管有没有答案代码
const availableLanguages = computed(() =>
  props.answers.map((a) => ({ label: a.language, value: a.language })),
)

const hasAnyAnswerCode = computed(() =>
  props.answers.some((a) => a.code.trim()),
)

// 当前选中语言是否有答案代码（用于控制"先运行"按钮）
const hasAnswerCode = computed(() => {
  const answer = props.answers.find(
    (a) => a.language === selectedLanguage.value,
  )
  return !!answer?.code.trim()
})

// 当语言列表变化时，确保 selectedLanguage 始终指向一个有效值
watch(
  availableLanguages,
  (langs) => {
    if (
      langs.length &&
      !langs.find((l) => l.value === selectedLanguage.value)
    ) {
      selectedLanguage.value = langs[0].value
    }
  },
  { immediate: true },
)

const isRunning = ref(false)
const isUploading = ref(false)

/**
 * 一个测试点必须有输出，但不一定有输入 —— 打印类题目（输出星号矩形、只靠
 * print 的格式化输出题…）的 `N.in` 本来就该是空文件。
 *
 * 原来「这行算不算数」判的是 `f.in.trim()`，把「这题没有输入」和「这行我还没填」
 * 撞成了同一种状态：输入留空 → 点「先运行」整行被删 → 一行不剩 → 「上传」
 * 永远是灰的。老师只能往输入框里塞个「无」才存得下去，那两个字节就真的进了 stdin。
 */
function hasOutput(file: FileEntry) {
  return !!file.out.trim() && !file.error
}

/** 老师碰过这一行没有。面板一开就铺 5 个空行，`+1` / `+5` 还能再加，空行是占位不是测试点 */
function isFilled(file: FileEntry) {
  return !!(file.in.trim() || file.out.trim())
}

/** 真正会被打进 zip 的行：有输出就算数，输入空不空无所谓 */
const uploadable = computed(() => files.value.filter(hasOutput))

const canUpload = computed(
  () =>
    !isRunning.value &&
    uploadable.value.length > 0 &&
    // 填了输入却没跑出输出：要么还没运行，要么运行炸了，这种状态不许传
    files.value.every((f) => !f.in.trim() || hasOutput(f)),
)

function reset() {
  files.value = Array.from({ length: 5 }, () => ({
    id: nextId++,
    in: "",
    out: "",
    error: false,
  }))
}

function add(n: number) {
  files.value.push(
    ...Array.from({ length: n }, () => ({
      id: nextId++,
      in: "",
      out: "",
      error: false,
    })),
  )
}

function remove(index: number) {
  files.value.splice(index, 1)
}

async function run() {
  const answer = props.answers.find(
    (a) => a.language === selectedLanguage.value,
  )
  if (!answer?.code.trim()) return

  // 过滤没填过的行，去重（按输入内容）。全没填就留一行，当成无输入题跑一次 ——
  // 无输入题只可能有一个测试点，去重那条规则本来也会把多行空输入并成一行。
  const seen = new Set<string>()
  const kept = files.value.filter((f) => {
    if (!isFilled(f)) return false
    if (seen.has(f.in)) return false
    seen.add(f.in)
    return true
  })
  files.value = kept.length > 0 ? kept : files.value.slice(0, 1)

  // 清空旧输出
  files.value = files.value.map((f) => ({ ...f, out: "", error: false }))

  isRunning.value = true
  await Promise.all(
    files.value.map(async (_, i) => {
      try {
        const result = await createTestSubmission(
          { language: selectedLanguage.value, value: answer.code },
          files.value[i].in,
        )
        files.value[i] = {
          ...files.value[i],
          out: result.output,
          error: result.status !== 3,
        }
      } catch {
        files.value[i] = { ...files.value[i], out: "", error: true }
      }
    }),
  )
  isRunning.value = false
}

async function upload() {
  isUploading.value = true
  try {
    const data = uploadable.value.flatMap((f, i) => [
      { name: `${i + 1}.in`, content: f.in },
      { name: `${i + 1}.out`, content: f.out },
    ])

    const blob = createZipBlob(data)
    const file = new File([blob], "testcase.zip", { type: "application/zip" })

    const res = await uploadTestcases(file)
    // score 不在上传响应里，是这里按测试点数量平分补上的（余数给最后一个）
    const entries = res.info
    const baseScore = Math.floor(100 / entries.length)
    const remainder = 100 - baseScore * entries.length
    const testcases: Testcase[] = entries.map((entry, i) => ({
      input_name: entry.input_name,
      output_name: entry.output_name,
      score: i === entries.length - 1 ? baseScore + remainder : baseScore,
    }))

    emit("uploaded", res.id, testcases)
    message.success("上传成功")
  } catch {
    message.error("上传失败")
  } finally {
    isUploading.value = false
  }
}
</script>

<template>
  <n-flex vertical>
    <n-alert
      v-if="!hasAnyAnswerCode"
      type="warning"
      :show-icon="false"
      style="margin-bottom: 8px"
    >
      还没有填写答案代码，请先在上方"本题参考答案"中填写至少一种语言的答案，再来生成测试用例
    </n-alert>
    <n-flex align="center" wrap>
      <n-select
        style="width: 120px"
        :options="availableLanguages"
        v-model:value="selectedLanguage"
      />
      <n-button :disabled="isRunning" @click="reset">清空</n-button>
      <n-button :disabled="isRunning" @click="add(1)">+1</n-button>
      <n-button :disabled="isRunning" @click="add(5)">+5</n-button>
      <n-tooltip :disabled="hasAnswerCode">
        <template #trigger>
          <span>
            <n-button
              type="success"
              :loading="isRunning"
              :disabled="!hasAnswerCode"
              @click="run"
            >
              先运行
            </n-button>
          </span>
        </template>
        请先在题目中填写答案代码
      </n-tooltip>
      <n-button
        type="primary"
        :loading="isUploading"
        :disabled="!canUpload"
        @click="upload"
      >
        上传
      </n-button>
    </n-flex>

    <n-flex
      v-for="(file, index) in files"
      :key="file.id"
      align="start"
      style="gap: 8px"
    >
      <n-flex vertical style="flex: 1">
        <span>{{ index + 1 }}.in</span>
        <n-input type="textarea" v-model:value="file.in" :rows="3" />
      </n-flex>
      <n-flex vertical style="flex: 1">
        <span>{{ index + 1 }}.out</span>
        <n-input
          type="textarea"
          v-model:value="file.out"
          :rows="3"
          :status="file.out ? (file.error ? 'error' : 'success') : undefined"
        />
      </n-flex>
      <n-button
        :disabled="files.length === 1 || isRunning"
        style="margin-top: 22px"
        @click="remove(index)"
      >
        删除
      </n-button>
    </n-flex>
  </n-flex>
</template>