Content adaptersに対応しました＆既存の記事の移行方法

{
    "path": "v0.145.0",
    "title": "Hugo v0.145.0 リリースノートまとめ",
    "description": "",
    "date": "2025-05-29T15:23:31+09:00",
    "lastmod": "2025-05-29T15:23:31+09:00",
    "draft": false,
    "tags": [
        "Hugo",
        "Hugoリリースノートまとめ"
    ],
    "categories": "Hugoリリース",
    "archives": [
        "2025年5月"
    ],
    "share": true,
    "toc": false,
    "comment": true,
    "thumbnail": "/article/hugo-release/v0.145.0/thumbnail.png",
    "content": "<div class=\"markdown-alert markdown-alert-warning\" dir=\"auto\"><p class=\"markdown-alert-title\" dir=\"auto\">..."
}

{{ $data := slice }}

{{ range where (os.ReadDir "assets/article/hugo-release") "IsDir" "eq" true }}
    {{ $path := .Name }}
    {{ with resources.Get (printf "article/hugo-release/%s/index.json" $path) }}
        {{ with . | transform.Unmarshal }}
            {{ $data = $data | append . }}
        {{ end }}
    {{ end }}
{{ end }}

{{ range $data }}
    {{ $content := dict
        "mediaType" "text/markdown"
        "value" .content
    }}
    {{ $dates := dict
        "date" (time.AsTime .date)
        "lastmod" (time.AsTime .lastmod)
    }}
    {{ $params := dict
        "title" .title
        "description" .description
        "date" (time.AsTime .date)
        "lastmod" (time.AsTime .lastmod)
        "tags" .tags
        "categories" .categories
        "archives" .archives
        "draft" .draft
        "share" .share
        "toc" .toc
        "comment" .comment
        "thumbnail" .thumbnail
    }}
    {{ $page := dict
        "path" .path
        "title" .title
        "draft" .draft
        "dates" $dates
        "content" $content
        "params" $params
    }}
    {{ $.AddPage $page }}
{{ end }}

outputs:
  home:
    - html
    - json
  page:
    - html
    - json

[
  {{- range $index, $page := where .Site.RegularPages "Section" "article" -}}
    {{- if $index }},{{- end -}}
    {{- $page.Permalink | jsonify -}}
  {{- end -}}
]

{
    "path": {{ path.BaseName .RelPermalink | jsonify }},
    "title": {{ .Params.Title | jsonify }},
    "description": {{ .Params.Description | jsonify }},
    "date": {{ .Params.Date | jsonify }},
    "lastmod": {{ .Params.Lastmod | jsonify }},
    "draft": {{ .Draft | jsonify }},
    "tags": {{ .Params.Tags | jsonify }},
    "categories": {{ .Params.Categories | jsonify }},
    "archives": {{ .Params.Archives | jsonify }},
    "share": {{ .Params.share | jsonify }},
    "toc": {{ .Params.toc | jsonify }},
    "comment": {{ .Params.comment | jsonify }},
    {{ with .Resources.GetMatch "thumbnail.*" }}
        "thumbnail": {{ .RelPermalink | jsonify }},
    {{ else with .Params.thumbnail }}
        "thumbnail": {{ . | jsonify }},
    {{ end }}
    "content": {{ .Content | jsonify }}
}

hugo server -D --disableFastRender

node scripts/copy-article-to-assets.js

const fs = require('fs')
const path = require('path')

/**
 * 記事データをコピーし、assetsディレクトリに保存するスクリプト
 * Usage: node scripts/copy-article-to-assets.js
 */

// ベースディレクトリの設定
const BASE_DIR = path.resolve(__dirname, '..')
const ASSETS_DIR = path.join(BASE_DIR, 'assets')
const CONTENT_DIR = path.join(BASE_DIR, 'content')

/**
 * JSONのURLを取得して指定ディレクトリにindex.jsonとして保存する
 */
async function saveIndexJson(inputJsonUrl, outputJsonDir) {
    const response = await fetch(inputJsonUrl)
    const jsonData = await response.json()
    const saveFilePath = path.join(outputJsonDir, 'index.json')
    fs.mkdirSync(outputJsonDir, { recursive: true })
    fs.writeFileSync(saveFilePath, JSON.stringify(jsonData, null, 4), 'utf-8')
    console.log(`index.jsonを保存しました: ${saveFilePath}`)
}

/**
 * 指定ディレクトリからthumbnail画像をコピーする
 */
function copyThumbnailImage(inputThumbnailDir, outputThumbnailDir) {
    if (!fs.existsSync(inputThumbnailDir)) {
        // ディレクトリが存在しない場合はコピーしない
        return
    }
    const files = fs.readdirSync(inputThumbnailDir)
    const thumbnailFiles = files.filter((file) => /^thumbnail\..+/.test(file))

    if (thumbnailFiles.length > 0) {
        const thumbnailFile = thumbnailFiles[0]
        const inputFilePath = path.join(inputThumbnailDir, thumbnailFile)
        const outputFilePath = path.join(outputThumbnailDir, thumbnailFile)
        fs.mkdirSync(outputThumbnailDir, { recursive: true })
        fs.copyFileSync(inputFilePath, outputFilePath)
        console.log(`サムネイル画像をコピーしました`)
        console.log(`from: ${inputFilePath}`)
        console.log(`  to: ${outputFilePath}`)
    }
}

/**
 * メイン処理
 */
async function main() {
    // サイトのindex.jsonからURL一覧を取得
    const siteIndexUrl = 'http://localhost:1313/index.json'
    const response = await fetch(siteIndexUrl)
    const urls = await response.json()

    for (const url of urls) {
        console.log('==========================================')
        console.log(`対象URL: ${url}`)

        // URLからパスを抽出
        const urlObj = new URL(url)
        const urlPath = urlObj.pathname

        // 1. index.jsonを取得＆保存
        const inputJsonUrl = `${url}index.json`
        const outputJsonDir = path.join(ASSETS_DIR, urlPath)
        await saveIndexJson(inputJsonUrl, outputJsonDir)

        // 2. thumbnail画像をコピー
        const inputThumbnailDir = path.join(CONTENT_DIR, urlPath)
        const outputThumbnailDir = path.join(ASSETS_DIR, urlPath)
        copyThumbnailImage(inputThumbnailDir, outputThumbnailDir)
        console.log('==========================================\n')
    }
}

;(async () => {
    console.log('処理を開始します...')
    await main()
    console.log('処理が完了しました！')
})()

-outputs:
-  home:
-    - html
-    - json
-  page:
-    - html
-    - json
-