n8n-flows/flows/paywall-bypass-backfill.json

{
  "name": "paywall-bypass-backfill",
  "nodes": [
    {
      "id": "2c9974bf-181e-4c58-a1f2-5223a662379a",
      "name": "Run Manually",
      "type": "n8n-nodes-base.manualTrigger",
      "typeVersion": 1,
      "position": [
        -800,
        0
      ],
      "parameters": {}
    },
    {
      "id": "1dda2695-81a1-4fab-a7cf-095f441862eb",
      "name": "Get Miniflux Entries",
      "type": "n8n-nodes-base.httpRequest",
      "typeVersion": 4.2,
      "position": [
        -360,
        0
      ],
      "parameters": {
        "method": "GET",
        "url": "http://192.168.1.40:17002/v1/entries",
        "sendHeaders": true,
        "headerParameters": {
          "parameters": [
            {
              "name": "X-Auth-Token",
              "value": "3f439f2db55967ed5acd83398214d2aa76124927cde07115d945b9282597fecb"
            }
          ]
        },
        "sendQuery": true,
        "queryParameters": {
          "parameters": [
            {
              "name": "status",
              "value": "unread"
            },
            {
              "name": "limit",
              "value": "100"
            },
            {
              "name": "order",
              "value": "published_at"
            },
            {
              "name": "direction",
              "value": "desc"
            }
          ]
        },
        "options": {}
      }
    },
    {
      "id": "8347ba6b-556f-4c9a-b22a-4fdcab3c2fc7",
      "name": "Process Entries",
      "type": "n8n-nodes-base.code",
      "typeVersion": 2,
      "position": [
        -120,
        0
      ],
      "parameters": {
        "mode": "runOnceForAllItems",
        "jsCode": "const MINIFLUX_TOKEN = '3f439f2db55967ed5acd83398214d2aa76124927cde07115d945b9282597fecb';\nconst MINIFLUX_URL = 'http://192.168.1.40:17002';\n\nconst PAYWALL_NEWS = [\n  'spiegel.de','zeit.de','faz.net','sueddeutsche.de','handelsblatt.com',\n  'nytimes.com','wsj.com','ft.com','washingtonpost.com','thetimes.co.uk',\n  'wired.com','theatlantic.com','economist.com','bloomberg.com',\n  'hbr.org','foreignpolicy.com','newyorker.com','taz.de',\n  'telegraph.co.uk','businessinsider.com'\n];\n\nconst PAYWALL_SCIENCE = [\n  'nature.com','science.org','cell.com','nejm.org','thelancet.com',\n  'link.springer.com','springer.com','wiley.com','onlinelibrary.wiley.com',\n  'sciencedirect.com','pubs.acs.org','rsc.org','pubs.rsc.org',\n  'bmj.com','annualreviews.org','pnas.org',\n  'jamanetwork.com','ahajournals.org','tandfonline.com','academic.oup.com'\n];\n\nconst CONTENT_MIN = 800;\nconst ALREADY_PROCESSED = /[\\u{1F513}\\u{1F4D6}\u274c]$/u;\nfunction extractDoi(url) {\n  let m = url.match(/doi\\.org\\/(10\\.\\d{4,}\\/[^\\s?#]+)/);\n  if (m) return decodeURIComponent(m[1]);\n  m = url.match(/\\/doi\\/(10\\.\\d{4,}\\/[^\\s?#]+)/);\n  if (m) return decodeURIComponent(m[1].replace(/[?#].*$/, ''));\n  return null;\n}\n\nfunction hostname(url) {\n  try { return new URL(url).hostname.replace(/^www\\./, ''); } catch { return ''; }\n}\n\nfunction badge(source, type) {\n  if (source === 'unpaywall') return '<p style=\"font-size:0.8em;color:#555;border-left:3px solid #4CAF50;padding:3px 8px;margin:0 0 1em\">\ud83d\udcda Open access via Unpaywall</p>';\n  if (type === 'science') return '<p style=\"font-size:0.8em;color:#555;border-left:3px solid #2196F3;padding:3px 8px;margin:0 0 1em\">\ud83d\udcda Full text via crawl4ai (not OA)</p>';\n  return '<p style=\"font-size:0.8em;color:#555;border-left:3px solid #FF9800;padding:3px 8px;margin:0 0 1em\">\ud83d\udcd6 Paywall bypass via crawl4ai</p>';\n}\n\nconst entries = $('Get Miniflux Entries').first().json.entries || [];\n\nconst results = [];\n\nfor (const e of entries) {\n  if (ALREADY_PROCESSED.test(e.title)) continue;\n  const host = hostname(e.url);\n  const isScience = PAYWALL_SCIENCE.some(d => host === d || host.endsWith('.' + d));\n  const isNews = PAYWALL_NEWS.some(d => host === d || host.endsWith('.' + d));\n  const isShort = (e.content || '').replace(/<[^>]+>/g, '').trim().length < CONTENT_MIN;\n\n  if (!isScience && !isNews && !isShort) continue;\n\n  const type = isScience ? 'science' : isNews ? 'news' : 'short';\n  let fetchUrl = e.url;\n  let source = 'wallabag';\n\n  // Try Unpaywall for scientific articles with a DOI\n  if (isScience) {\n    const doi = extractDoi(e.url);\n    if (doi) {\n      try {\n        const up = await $helpers.httpRequest({\n          method: 'GET',\n          url: `https://api.unpaywall.org/v2/${encodeURIComponent(doi)}?email=fkrebs@nucli.de`,\n        });\n        if (up.is_oa && up.best_oa_location) {\n          const oaUrl = up.best_oa_location.url || up.best_oa_location.url_for_pdf;\n          if (oaUrl) { fetchUrl = oaUrl; source = 'unpaywall'; }\n        }\n      } catch (_) {}\n    }\n  }\n\n  // Fetch full text via crawl4ai\n  let wbContent = '';\n  try {\n    const cr = await $helpers.httpRequest({\n      method: 'POST',\n      url: 'http://mcp-crawl4ai:11235/md',\n      headers: { 'Content-Type': 'application/json' },\n      body: JSON.stringify({ url: fetchUrl, filter: 'fit' }),\n    });\n    if (cr.success && cr.markdown) wbContent = '<p>' + cr.markdown.replace(/\\n\\n/g, '</p><p>').replace(/\\n/g, '<br>') + '</p>';\n  } catch (_) {}\n\n  if (!wbContent) {\n    // Mark title with failure emoji\n    const failTitle = e.title.replace(/ [\ud83d\udd13\ud83d\udcd6\ud83d\udd12\u23f3\u274c]$/, '') + ' \u274c';\n    try {\n      await $helpers.httpRequest({\n        method: 'PUT',\n        url: `${MINIFLUX_URL}/v1/entries/${e.id}`,\n        headers: { 'X-Auth-Token': MINIFLUX_TOKEN, 'Content-Type': 'application/json' },\n        body: JSON.stringify({ title: failTitle }),\n      });\n    } catch (_) {}\n    results.push({ json: { entry_id: e.id, title: failTitle, status: 'no_content', source, type } });\n    continue;\n  }\n\n  const finalContent = badge(source, type) + wbContent;\n  const titleEmoji = source === 'unpaywall' ? '\ud83d\udd13' : '\ud83d\udcd6';\n  const newTitle = e.title.replace(/ [\ud83d\udd13\ud83d\udcd6\ud83d\udd12\u23f3\u274c]$/, '') + ' ' + titleEmoji;\n\n  // Update Miniflux entry content + title\n  try {\n    await $helpers.httpRequest({\n      method: 'PUT',\n      url: `${MINIFLUX_URL}/v1/entries/${e.id}`,\n      headers: { 'X-Auth-Token': MINIFLUX_TOKEN, 'Content-Type': 'application/json' },\n      body: JSON.stringify({ content: finalContent, title: newTitle }),\n    });\n    results.push({ json: { entry_id: e.id, title: newTitle, status: 'updated', source, type } });\n  } catch (err) {\n    results.push({ json: { entry_id: e.id, title: e.title, status: 'update_error', error: String(err), source, type } });\n  }\n}\n\nif (results.length === 0) return [{ json: { status: 'no_candidates', checked: entries.length } }];\nreturn results;"
      }
    }
  ],
  "connections": {
    "Get Miniflux Entries": {
      "main": [
        [
          {
            "node": "Process Entries",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Run Manually": {
      "main": [
        [
          {
            "node": "Get Miniflux Entries",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  },
  "settings": {
    "executionOrder": "v1"
  },
  "id": "66febffd-0d3b-4853-a82b-1e41c9c30af1"
}