185 lines
7.3 KiB
TypeScript
185 lines
7.3 KiB
TypeScript
/**
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* Publish `samples/d2-packs` to the asset repository.
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*
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* The baked atlas packs are ~66 MB of indexed PNG. PNG is already deflate
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* compressed, so git's delta compression buys almost nothing: every re-bake changes
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* nearly every file, and a normal commit would grow the repository by another ~60 MB
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* each time (measured: the code repository went 63 MB → 117 MB over two bakes).
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*
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* So the asset repository deliberately keeps **exactly one commit**: every publish
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* creates an orphan history (a brand new repository in a temp directory), commits the
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* current packs, and force-pushes it over the remote. The repository therefore stays
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* at "one snapshot" (~66 MB) no matter how often the packs are re-baked, and the code
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* repository — which no longer contains the packs — clones in a couple of megabytes.
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*
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* Usage:
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* ```
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* node scripts/publish-packs.ts # default remote
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* node scripts/publish-packs.ts <git-remote-url> # explicit remote
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* ```
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*
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* The remote needs credentials; either pass a URL with them, or run
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* `git config --global credential.helper store` once so `git push` does not prompt.
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* Nothing here writes a password to disk.
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*
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* @module
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*/
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import { execFileSync } from 'node:child_process'
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import {
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cpSync, existsSync, mkdtempSync, readdirSync, readFileSync, rmSync, statSync, writeFileSync,
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} from 'node:fs'
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import { createHash } from 'node:crypto'
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import { tmpdir } from 'node:os'
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import { join, resolve } from 'node:path'
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/** Where the packs live inside the code repository. */
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const PACKS_DIR = resolve(import.meta.dirname, '..', 'samples', 'd2-packs')
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/** The asset repository, without credentials. */
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const DEFAULT_REMOTE = 'https://git.projectdiablo2.cn/troytt/diablo2-web-assets.git'
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/** The code repository, linked from the generated README. */
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const CODE_REPO = 'https://git.projectdiablo2.cn/troytt/diablo2-web'
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/** The archive mirror served next to the deployment. */
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const ARCHIVE_BASE = 'https://www.laiseek.xyz/diablo2/assets'
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/** Raised when the packs are missing or git fails. */
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class PublishError extends Error {}
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/**
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* Run one git command in `cwd`, inheriting stdio so progress is visible.
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*
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* @param args - git arguments.
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* @param cwd - directory to run in.
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*/
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function git(args: readonly string[], cwd: string): void {
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try {
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execFileSync('git', args, { cwd, stdio: ['ignore', 'inherit', 'inherit'] })
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} catch {
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throw new PublishError(`git ${args.join(' ')} failed`)
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}
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}
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/**
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* Collect the statistics that go into the generated README.
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*
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* @returns file count, total bytes, map-block count and the `index.json` hash.
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*/
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function measure(): { files: number; bytes: number; maps: number; indexSha: string } {
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const indexPath = join(PACKS_DIR, 'index.json')
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if (!existsSync(indexPath)) {
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throw new PublishError(`no packs at ${PACKS_DIR} — run: npm run pack:data`)
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}
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const index = JSON.parse(readFileSync(indexPath, 'utf8')) as { entries?: unknown[]; levels?: unknown[] }
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const indexSha = createHash('sha256').update(readFileSync(indexPath)).digest('hex')
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let files = 0
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let bytes = 0
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const walk = (dir: string): void => {
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for (const entry of readdirSync(dir, { withFileTypes: true })) {
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const path = join(dir, entry.name)
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if (entry.isDirectory()) walk(path)
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else {
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files += 1
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bytes += statSync(path).size
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}
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}
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}
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walk(PACKS_DIR)
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return { files, bytes, maps: index.levels?.length ?? index.entries?.length ?? 0, indexSha }
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}
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/**
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* Build the README that ships inside the asset repository.
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*
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* @param stats - output of {@link measure}.
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* @param stamp - `YYYY-MM-DD` bake date.
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* @returns the markdown text.
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*/
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function readme(stats: ReturnType<typeof measure>, stamp: string): string {
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const mb = (stats.bytes / 1048576).toFixed(1)
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return `# d2web 烘焙图集包（${stamp}）
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这是 [\`troytt/diablo2-web\`](${CODE_REPO}) 的**烘焙产物**：把原版暗黑破坏神 II（1.13c）的地图
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解包成 web 原生格式——索引色 PNG 图集页 + \`scene.json\`（画家序绘制列表、碰撞 RLE、出生点、
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对象元数据）+ \`index.json\`（含各 act 调色板）。
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- 地图块 **${stats.maps} 个**（覆盖全 5 幕 136 个关卡预置与随机变体），文件 **${stats.files} 个**，合计 **${mb} MB**
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- \`index.json\` sha256：\`${stats.indexSha}\`
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- 生成时间：${stamp}
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## 本仓库为什么只有一个提交
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图集页是索引色 PNG（deflate 已压缩），git 的 delta 压缩对它几乎无收益：每次重烘几乎全部文件
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都会变。若按普通方式提交，每烘焙一次仓库就再长 ~60 MB（实测代码仓库因此从 63 MB 涨到 117 MB）。
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所以这里刻意**只保留一个提交**：每次重烘用 orphan 提交 + force push 覆盖，仓库体积恒定在
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「一份快照」≈${Math.round(stats.bytes / 1048576)} MB。历史没有价值——需要旧版请从代码仓库
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对应提交重新烘焙。
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## 怎么用
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\`\`\`bash
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# 放进代码仓库的 samples/d2-packs/，页面默认就吃这个目录
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git clone ${DEFAULT_REMOTE} samples/d2-packs
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\`\`\`
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只要一份压缩包（不需要 git）：
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\`\`\`bash
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curl -O ${ARCHIVE_BASE}/d2-packs-${stamp}.tar.xz
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tar xJf d2-packs-${stamp}.tar.xz
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\`\`\`
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## 怎么重新生成并发布
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在代码仓库里（需要自备原版 MPQ，放在 \`samples/d2/\`）：
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\`\`\`bash
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npm run pack:data # scripts/pack-act-assets.ts → samples/d2-packs（约 2 分钟）
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npm run verify:packs # 与"现读现解"逐项比对：绘制序、碰撞栅格逐字节、每帧像素哈希
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npm run publish:packs # orphan 提交 + force push 覆盖本仓库
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\`\`\`
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## 许可
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内容为原版游戏美术的解码产物，仅供**持有正版游戏数据**的人在本项目内使用；请勿再分发。
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原版 MPQ 与第三方参考源码都不在本仓库内。
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`
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}
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const remote = process.argv[2] ?? process.env['D2_ASSETS_REMOTE'] ?? DEFAULT_REMOTE
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const stats = measure()
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const stamp = new Date().toISOString().slice(0, 10)
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const work = mkdtempSync(join(tmpdir(), 'd2-assets-'))
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try {
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console.log(`图集包：${String(stats.maps)} 块地图 / ${String(stats.files)} 个文件 / ${(stats.bytes / 1048576).toFixed(1)} MB`)
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console.log(`index.json sha256：${stats.indexSha}`)
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console.log(`临时仓库：${work}`)
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git(['init', '-q', '-b', 'main'], work)
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cpSync(PACKS_DIR, work, { recursive: true })
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writeFileSync(join(work, 'README.md'), readme(stats, stamp))
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writeFileSync(join(work, '.gitattributes'), '*.png binary -diff\n*.json text eol=lf\n')
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git(['add', '-A'], work)
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git([
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'-c', 'user.name=d2web', '-c', 'user.email=d2web@localhost',
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'commit', '-q', '-m',
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`烘焙图集包 ${stamp}：${String(stats.maps)} 个地图块（${(stats.bytes / 1048576).toFixed(1)} MB）
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本仓库刻意只保留一个提交：图集页是索引色 PNG，git 的 delta 压缩对它几乎无收益，
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每次重烘几乎全部文件都变；普通提交会让仓库每烘焙一次再长 ~60 MB。所以每次重烘都
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用 orphan 提交 + force push 覆盖（见 README）。
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index.json sha256: ${stats.indexSha}
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由 troytt/diablo2-web 的 npm run pack:data 生成。`,
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], work)
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console.log(`推送到 ${remote}（force，覆盖历史）…`)
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git(['push', '--force', remote, 'main'], work)
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console.log('完成。使用方：git clone ' + remote + ' samples/d2-packs')
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} finally {
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rmSync(work, { recursive: true, force: true })
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}
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