Select LeetCode Problem #109

	name: Select LeetCode Problem
	on:
	# 1. 允许快捷指令手动触发并传参
	workflow_dispatch:
	inputs:
	category:
	description: 'LeetCode Tag'
	required: true
	default: 'Array'

	# 2. 每天凌晨自动运行（更新 tags.json）
	schedule:
	# 国际标准时间 (UTC) 10:00，约等于加州时间 (PST) 凌晨 02:00
	- cron: '0 10 * * *'

	jobs:
	select_and_update:
	runs-on: ubuntu-latest
	permissions:
	contents: write # 赋予推送权限
	steps:
	- uses: actions/checkout@v3

	- name: Set up Python
	uses: actions/setup-python@v4
	with:
	python-version: '3.x'

	- name: Pick Problem
	# 这里会将快捷指令传来的标签传给 Python 脚本
	run: python pick_problem.py "${{ github.event.inputs.category \|\| 'Array' }}"

	- name: Commit and Push
	run: \|
	git config --local user.email "actions@github.com"
	git config --local user.name "GitHub Actions"
	# 同时锁定结果文件和自动生成的标签列表
	git add result.txt summary.json
	# 安全检查：只有在内容发生变化时才执行推送，避免报错
	git diff --quiet && git diff --staged --quiet \|\| (git commit -m "Update result and tags" && git push)

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