您的博客主题

• •可能需要目标 API 的认证凭证
• •OpenAI API Key

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      "id": "04822337-291d-4cdf-a7dc-7066989e1a29",
      "name": "条件判断",
      "type": "n8n-nodes-base.if",
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        "content": "插入所选主题"
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      "name": "提取主题",
      "type": "n8n-nodes-base.code",
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        "jsCode": "\n// Ultra-robust topic extraction for chat/Telegram/webhook\n\nfunction firstString(arr) {\n  for (const v of arr) {\n    if (typeof v === 'string' && v.trim()) return v.trim();\n  }\n  return '';\n}\n\n// If using n8n Chat Trigger, often it's in messages[]\nconst msgs = Array.isArray($json.messages)\n  ? $json.messages.map(m => m?.content).filter(Boolean).join('\\n')\n  : '';\n\nconst text = firstString([\n  $json.text,\n  $json.message?.text,\n  $json.message?.content,\n  $json.prompt,\n  $json.query,\n  $json.input,\n  $json.body?.text,\n  $json.body?.message,\n  $json.payload?.text,\n  $json.content,\n  msgs,\n  (typeof $json === 'string' ? $json : '')\n]);\n\nlet topic = String(text || '').trim();\n\n// Allow `/topic …` or `topic: …` style commands\ntopic = topic.replace(/^\\/topic\\s+/i, '').replace(/^topic:\\s*/i, '').trim();\n\nif (!topic) {\n  return [{\n    json: {\n      topic: 'Scientists Develop Plant-Based Plastic That Is Self-Repairing and Antimicrobial - Technology Networks',\n      help: 'No topic detected. Send a message with your topic, or use \"/topic <subject>\".'\n    }\n  }];\n}\n\nreturn [{ json: { topic } }];\n"
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      "typeVersion": 2
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    {
      "id": "9a3b8a63-2ee2-4786-9884-7d907f2130a2",
      "name": "构建聊天研究主体",
      "type": "n8n-nodes-base.code",
      "position": [
        -944,
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      ],
      "parameters": {
        "jsCode": "\n// Build Chat Research Body with resilient topic sourcing\nfunction pickTopic() {\n  // Primary: from Extract Topic\n  if ($node[\"Extract Topic\"]?.json?.topic) return String($node[\"Extract Topic\"].json.topic);\n\n  // Fallbacks: read raw trigger payloads\n  const trig = $node[\"When chat message received\"]?.json || {};\n  const msgs = Array.isArray(trig.messages) ? trig.messages.map(m => m?.content).filter(Boolean).join('\\n') : '';\n\n  const candidates = [\n    $json.topic,\n    trig.text,\n    trig.message?.text,\n    trig.message?.content,\n    trig.prompt,\n    trig.query,\n    trig.input,\n    trig.body?.text,\n    trig.body?.message,\n    trig.payload?.text,\n    trig.content,\n    msgs\n  ].filter(v => typeof v === 'string' && v.trim());\n\n  if (candidates.length) {\n    const t = candidates[0].replace(/^\\/topic\\s+/i, '').replace(/^topic:\\s*/i, '').trim();\n    if (t) return t;\n  }\n  return '';\n}\n\nconst topic = pickTopic();\nconst style   = $node[\"Style\"]?.json?.style_guide || \"Human, practical, medium–low formality.\";\nconst dos     = ($node[\"Style\"]?.json?.dos || []).map(s => \"• \" + s).join(\"\\n\");\nconst donts   = ($node[\"Style\"]?.json?.donts || []).map(s => \"• \" + s).join(\"\\n\");\n\nif (!topic) {\n  throw new Error(\"No topic provided. Send a message to the bot with the topic you want researched (e.g., '/topic WA renewable energy in mining').\");\n}\n\nconst body = {\n  model: \"gpt-4o-mini\",\n  response_format: { type: \"json_object\" },\n  temperature: 0.6,\n  messages: [\n    {\n      role: \"system\",\n      content:\n        \"You are a research writer creating long-form, well-cited blog posts for a general audience. \" +\n        \"Always include descriptive, trustworthy external links (with full URLs) to support claims. \" +\n        \"Write between 1700–1800 words. Use only clean HTML tags: <p>, <h2>, <ul>, <ol>, <li>, <strong>, <em>, <a>. \" +\n        \"Sections to include: What happened/Context; Why it matters; Opportunities/risks; Action plan; FAQ.\"\n    },\n    {\n      role: \"user\",\n      content:\n`TOPIC:\n${topic}\n\nSTYLE GUIDE:\n${style}\n\nDO:\n${dos}\n\nDON'T:\n${donts}\n\nReturn ONLY one JSON object exactly in this shape:\n{\n  \"title\": \"<compelling title for the post>\",\n  \"content\": \"<HTML content using only allowed tags>\"\n}`\n    }\n  ]\n};\n\nreturn [{ json: body }];\n"
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      "name": "研究主题 - GPT",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
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        "method": "POST",
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        "jsonBody": "={{$json}}",
        "sendBody": true,
        "specifyBody": "json",
        "authentication": "predefinedCredentialType",
        "nodeCredentialType": "openAiApi"
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      "credentials": {
        "openAiApi": {
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          "name": "OpenAi account"
        }
      },
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    },
    {
      "id": "592cbdfa-7669-4194-8621-f8dd302f80e7",
      "name": "构建语气请求",
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      ],
      "parameters": {
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      },
      "typeVersion": 2
    },
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      "name": "语气与格式修订 - GPT",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
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      ],
      "parameters": {
        "url": "https://api.openai.com/v1/chat/completions",
        "method": "POST",
        "options": {},
        "jsonBody": "={{ $json }}",
        "sendBody": true,
        "specifyBody": "=json",
        "authentication": "predefinedCredentialType",
        "bodyParameters": {
          "parameters": [
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          ]
        },
        "nodeCredentialType": "openAiApi"
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      "credentials": {
        "openAiApi": {
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          "name": "OpenAi account"
        }
      },
      "retryOnFail": true,
      "typeVersion": 4.2,
      "alwaysOutputData": true
    },
    {
      "id": "bdc9694f-bb30-4390-b776-fa248ce362db",
      "name": "字数守卫",
      "type": "n8n-nodes-base.code",
      "position": [
        -48,
        560
      ],
      "parameters": {
        "jsCode": "// Word Count Guard (after Tone & Format)\nfunction strip(html) { return (html || '').replace(/<[^>]+>/g, ' '); }\nconst text = strip($json.content || '');\nconst words = text.trim().split(/\\s+/).filter(Boolean).length;\n\nconst MIN = 1600;\nif (words >= MIN) {\n  return [{ json: { ...$json, word_count: words } }];\n}\n\n// too short → ask GPT to expand\nreturn [{\n  json: {\n    draft: $json,\n    word_count: words,\n    need_expand: true\n  }\n}];\n"
      },
      "typeVersion": 2
    },
    {
      "id": "88a3bc72-6e94-4ca9-a32d-85fc874d992d",
      "name": "扩展草稿",
      "type": "@n8n/n8n-nodes-langchain.openAi",
      "position": [
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      ],
      "parameters": {
        "modelId": {
          "__rl": true,
          "mode": "list",
          "value": "gpt-4.1",
          "cachedResultName": "GPT-4.1"
        },
        "options": {},
        "messages": {
          "values": [
            {
              "role": "system",
              "content": "=Expand this article to exceed 1,800 words by deepening “Why it matters”,\n“Winners/risks”, and a more detailed “Action plan”. Keep the same voice\nand existing links intact.\n\n{{ JSON.stringify($json.draft || $json) }}\n\n"
            }
          ]
        },
        "simplify": false,
        "jsonOutput": true
      },
      "credentials": {
        "openAiApi": {
          "id": "N0prwl5xJER42aO1",
          "name": "OpenAi account"
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      },
      "typeVersion": 1.8
    },
    {
      "id": "e7c71c62-9cbc-4f80-bb68-b7d26ee6d933",
      "name": "获取标题、内容和图片文件名",
      "type": "n8n-nodes-base.code",
      "position": [
        800,
        560
      ],
      "parameters": {
        "jsCode": "// ---- helpers ----\nfunction slugify(s) {\n  return String(s || '')\n    .toLowerCase()\n    .normalize('NFD').replace(/[\\u0300-\\u036f]/g, '')\n    .replace(/[^a-z0-9]+/g, '-')\n    .replace(/^-+|-+$/g, '')\n    .slice(0, 60);\n}\n\nfunction extractSources(html) {\n  if (!html) return '';\n  if (/<h2[^>]*>Sources<\\/h2>/i.test(html)) return html;\n\n  const urls = Array.from(new Set(\n    (html.match(/https?:\\/\\/[^\\s\"')<>]+/g) || []).map(u => u.replace(/[.,)\\]]+$/,''))\n  ));\n\n  if (!urls.length) return html;\n\n  const items = urls.map(u => {\n    try {\n      const host = new URL(u).hostname.replace(/^www\\./,'');\n      return `<li><a href=\"${u}\">${host}</a></li>`;\n    } catch {\n      return `<li><a href=\"${u}\">${u}</a></li>`;\n    }\n  }).join('');\n\n  return html + `\\n\\n<h2>Sources</h2><ul>${items}</ul>`;\n}\n\n// Detect object vs string safely and only JSON.parse when it's a real string\nfunction coerceObject(j) {\n  // 1) Common places where the node already gives an OBJECT\n  if (j?.message?.parsed && typeof j.message.parsed === 'object') return j.message.parsed;\n  if (j?.choices?.[0]?.message?.parsed && typeof j.choices[0].message.parsed === 'object') {\n    return j.choices[0].message.parsed;\n  }\n  if (j?.message?.content && typeof j.message.content === 'object') return j.message.content;\n\n  // 2) Candidate content (could be string or object)\n  let cand =\n    j?.choices?.[0]?.message?.content ??\n    j?.message?.content ??\n    j?.content ??\n    '';\n\n  // If it's already an OBJECT, just use it\n  if (cand && typeof cand === 'object' && !Array.isArray(cand)) return cand;\n\n  // 3) If it's a STRING, clean & parse\n  if (typeof cand === 'string') {\n    let s = cand.trim();\n\n    // strip ```json fences if present\n    s = s.replace(/^```(?:json)?\\s*/i, '').replace(/```$/i, '');\n\n    // isolate outermost JSON object (in case there's prose around it)\n    const start = s.indexOf('{');\n    const end   = s.lastIndexOf('}');\n    if (start !== -1 && end !== -1) s = s.slice(start, end + 1);\n\n    try {\n      return JSON.parse(s);\n    } catch (e) {\n      throw new Error(\n        'Could not parse model JSON. ' +\n        'Type=' + typeof cand + ' Preview:\\n' + s.slice(0, 400)\n      );\n    }\n  }\n\n  // 4) Nothing usable\n  throw new Error('No usable payload: got ' + typeof cand);\n}\n\n// ---- MAIN ----\nconst obj = coerceObject($json);         // <- ONLY parses when needed\n\nconst title = String(obj.title || 'Untitled').trim();\nlet content = String(obj.content || '');\ncontent = extractSources(content);\n\nconst image_filename = `${slugify(title)}.jpg`;\n\nreturn [{ json: { title, content, image_filename } }];\n"
      },
      "typeVersion": 2
    },
    {
      "id": "bc7ce808-9364-490c-ba57-7eec034a84d3",
      "name": "消息模型",
      "type": "@n8n/n8n-nodes-langchain.openAi",
      "position": [
        1024,
        560
      ],
      "parameters": {
        "modelId": {
          "__rl": true,
          "mode": "list",
          "value": "gpt-4.1-mini",
          "cachedResultName": "GPT-4.1-MINI"
        },
        "options": {},
        "messages": {
          "values": [
            {
              "content": "=Generate a single-line English description of an editorial-style image to visually represent the following article.\n\nThe image must follow these rules:\n- Cinematic, editorial look (not cartoonish or abstract).\n- No visible text or logos.\n- Must work for a blog post featured image in Google News and Discover (ideal size: 1200x628 px).\n- The article title is: \"{{ $json.title }}\"\n- Article content: {{ $json.content }}.\n\nOutput just the English prompt, without quotes or formatting."
            },
            {
              "role": "system",
              "content": "You are an expert in crafting AI image generation prompts for editorial and news images. You help generate cinematic, editorial-style prompts for blog images that perform well in Google News and Google Discover. Avoid any text or logos in the result."
            }
          ]
        }
      },
      "credentials": {
        "openAiApi": {
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          "name": "OpenAi account"
        }
      },
      "typeVersion": 1.8
    },
    {
      "id": "b740df0f-147d-4558-ba9a-ba8ea8d34b5c",
      "name": "Leonardo：创建帖子图片",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        1424,
        560
      ],
      "parameters": {
        "url": "https://cloud.leonardo.ai/api/rest/v1/generations",
        "method": "POST",
        "options": {},
        "jsonBody": "={\n  \"prompt\": \"{{ $json.message.content }}\",\n  \"modelId\": \"6bef9f1b-29cb-40c7-b9df-32b51c1f67d3\",\n  \"width\": 1280,\n  \"height\": 720,\n  \"sd_version\": \"v2\",\n  \"num_images\": 1,\n  \"promptMagic\": true,\n  \"promptMagicStrength\": 0.5,\n  \"public\": false,\n  \"scheduler\": \"LEONARDO\",\n  \"guidance_scale\": 7\n}",
        "sendBody": true,
        "sendHeaders": true,
        "specifyBody": "json",
        "authentication": "genericCredentialType",
        "genericAuthType": "httpBearerAuth",
        "headerParameters": {
          "parameters": [
            {
              "name": "accept",
              "value": "application/json"
            }
          ]
        }
      },
      "credentials": {
        "httpBearerAuth": {
          "id": "Y4qwBCdhuvhvcbgU",
          "name": "Bearer Auth account"
        }
      },
      "retryOnFail": true,
      "typeVersion": 4.2
    },
    {
      "id": "49474905-0c91-452f-9f22-d665a64cf99d",
      "name": "代码",
      "type": "n8n-nodes-base.code",
      "position": [
        1648,
        560
      ],
      "parameters": {
        "jsCode": "// Node: Keep Generation Id\nconst id =\n  $json.sdGenerationJob?.generationId ||\n  $json.generationId ||\n  $json.generations_by_pk?.id ||\n  $json.id;\n\nif (!id) throw new Error('No generationId found in previous node output');\n\nreturn [{ json: { generationId: id } }];\n"
      },
      "typeVersion": 2
    },
    {
      "id": "16c44420-52eb-4024-841b-504a7e3bfbd1",
      "name": "等待",
      "type": "n8n-nodes-base.wait",
      "position": [
        1872,
        560
      ],
      "webhookId": "7ef107aa-35d0-4af9-88af-284d0d7b786f",
      "parameters": {
        "amount": 30
      },
      "typeVersion": 1.1
    },
    {
      "id": "f325dc6f-2318-4627-8d79-157668d032aa",
      "name": "获取Leonardo图片状态",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        2096,
        560
      ],
      "parameters": {
        "url": "=https://cloud.leonardo.ai/api/rest/v1/generations/{{ $json.generationId }}\n",
        "options": {},
        "authentication": "genericCredentialType",
        "genericAuthType": "httpBearerAuth"
      },
      "credentials": {
        "httpBearerAuth": {
          "id": "Y4qwBCdhuvhvcbgU",
          "name": "Bearer Auth account"
        }
      },
      "retryOnFail": true,
      "typeVersion": 4.2
    },
    {
      "id": "680da0a3-1068-407a-8d37-5685b635ffb1",
      "name": "获取Leonardo图片",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        2320,
        560
      ],
      "parameters": {
        "url": "={{ $json.generations_by_pk.generated_images[0].url }}",
        "options": {}
      },
      "retryOnFail": true,
      "typeVersion": 4.2
    },
    {
      "id": "bd5d579c-427a-4123-a55f-f8645e0729d0",
      "name": "上传图片到Wordpress",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        2544,
        560
      ],
      "parameters": {
        "url": "https://public-api.wordpress.com/wp/v2/sites/YOUR_SITE/media",
        "method": "POST",
        "options": {},
        "sendBody": true,
        "contentType": "binaryData",
        "sendHeaders": true,
        "authentication": "genericCredentialType",
        "genericAuthType": "oAuth2Api",
        "headerParameters": {
          "parameters": [
            {
              "name": "Content-Disposition",
              "value": "=attachment; filename=\"{{ $('Get Title, Content, and Image FileName').item.json.image_filename }}\""
            },
            {
              "name": "Content-Type",
              "value": "image/jpeg"
            }
          ]
        },
        "inputDataFieldName": "data"
      },
      "credentials": {
        "oAuth2Api": {
          "id": "RDNdCz3KDtfkEUzZ",
          "name": "Unnamed credential 3"
        },
        "httpBasicAuth": {
          "id": "u7ymCgWhm9B7j0c9",
          "name": "Unnamed credential 2"
        }
      },
      "retryOnFail": true,
      "typeVersion": 4.2
    },
    {
      "id": "157ebde6-f217-4780-b824-567a99357162",
      "name": "为图片添加ALT标签",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        2768,
        560
      ],
      "parameters": {
        "url": "=https://public-api.wordpress.com/wp/v2/sites/deansfieldnotes.wordpress.com/media/{{ $json.id }}",
        "method": "PUT",
        "options": {},
        "sendBody": true,
        "authentication": "genericCredentialType",
        "bodyParameters": {
          "parameters": [
            {
              "name": "alt_text",
              "value": "={{ $('Message a model').item.json.message.content }}"
            }
          ]
        },
        "genericAuthType": "oAuth2Api"
      },
      "credentials": {
        "oAuth2Api": {
          "id": "RDNdCz3KDtfkEUzZ",
          "name": "Unnamed credential 3"
        },
        "httpBasicAuth": {
          "id": "u7ymCgWhm9B7j0c9",
          "name": "Unnamed credential 2"
        }
      },
      "retryOnFail": true,
      "typeVersion": 4.2
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    {
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}