Résumer automatiquement les articles de blog et les publier sur les médias sociaux avec Gemma et Postiz

• •Peut nécessiter les informations d'identification d'authentification de l'API cible

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  "name": "Auto-Summarize Blog Posts to Social Media with Gemma and Postiz",
  "tags": [],
  "nodes": [
    {
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      "name": "Postiz (Créer un post)",
      "type": "n8n-nodes-postiz.postiz",
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      "position": [
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      "parameters": {
        "date": "2025-08-06T14:45:00",
        "posts": {
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                          "id": "={{ $('Upload Image to Postiz').item.json.id }}",
                          "path": "={{ $('Upload Image to Postiz').item.json.path }}"
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                    "content": "={{ $json.text ? $json.text : 'NO_TEXT' }} {{ $json.link ? $json.link : 'NO_LINK' }}"
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              },
              "integrationId": "cmdt7mm7c0001uq6yoangez5f"
            },
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                ]
              },
              "settings": {
                "setting": [
                  {
                    "key": "post_type",
                    "stringValue": "post"
                  },
                  {
                    "key": "collaborators",
                    "stringValue": "[]"
                  },
                  {
                    "key": "media_type",
                    "stringValue": "IMAGE"
                  },
                  {
                    "key": "shortLink",
                    "valueType": "boolean"
                  }
                ]
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              "integrationId": "cmdt88b790003uq6y4lyk97o0"
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      "name": "Note adhésive",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
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        64
      ],
      "parameters": {
        "content": "Replace 'Blog's Name' and the URL with your own RSS feed details (e.g., your blog's RSS URL)."
      },
      "typeVersion": 1
    },
    {
      "id": "3c46789a-12cc-4a29-ab28-68b5a963c8f2",
      "name": "Note adhésive1",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        448,
        48
      ],
      "parameters": {
        "content": "This node fetches the RSS feed. Ensure the URL matches your blog—update if needed for custom feeds."
      },
      "typeVersion": 1
    },
    {
      "id": "dcbe57b4-3866-4053-9da1-874b2b7d6947",
      "name": "Note adhésive2",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        3472,
        48
      ],
      "parameters": {
        "width": 256,
        "content": "Customize the LLM prompt for your content niche (e.g., change tone, fallback summary, or hashtag style to fit your blog's theme)."
      },
      "typeVersion": 1
    },
    {
      "id": "93f63cde-e055-42dd-90b4-d66637339258",
      "name": "Note adhésive3",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        3488,
        384
      ],
      "parameters": {
        "content": "Select your preferred Ollama model (e.g., gemma3:12b or alternatives like LLaMA). Update credentials with your local Ollama API setup."
      },
      "typeVersion": 1
    },
    {
      "id": "68bd2325-938e-42c5-88ef-46a8c556871f",
      "name": "Note adhésive4",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        3216,
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      ],
      "parameters": {
        "content": "Adjust maxChars calculation, hashtag reserve (default 50 chars), or buffers if using different platforms/limits (e.g., increase for longer hashtags)."
      },
      "typeVersion": 1
    },
    {
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      "type": "n8n-nodes-base.stickyNote",
      "position": [
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      "parameters": {
        "content": "Update validation logic if your inputs vary (e.g., add checks for custom fields like text length, link format, or image presence)."
      },
      "typeVersion": 1
    },
    {
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      "position": [
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      ],
      "parameters": {
        "width": 288,
        "height": 368,
        "content": "This node posts to social platforms via Postiz API—crucial for the workflow!\n- Update URL if your Postiz instance differs (e.g., self-hosted endpoint).\n- Set authentication: Add your Postiz API credentials (no hardcoding keys!).\n- Customize jsonBody: Replace integration IDs (e.g., \"cmdt7mm7c0001uq6yoangez5f\" for Facebook) with your own from Postiz dashboard.\n- Adjust platform settings (e.g., \"__type\", \"post_type\") if adding/removing channels.\nTest with a sample post to verify."
      },
      "typeVersion": 1
    },
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      "position": [
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      ],
      "parameters": {
        "width": 480,
        "height": 400,
        "content": "The \"Postiz (Create Post)\" node is deactivated due to a compatibility bug with Instagram's JSON payload in the Postiz-n8n integration (see GitHub issue https://github.com/gitroomhq/postiz-n8n/issues/7), which prevents reliable posting. Instead, the \"HTTP Request\" node directly calls the Postiz API for greater control and workaround flexibility. On one hand, this ensures stable posting across platforms; on the other, it requires manual JSON tweaks, potentially increasing setup complexity for users."
      },
      "typeVersion": 1
    },
    {
      "id": "885a82ba-0ba1-47c9-99bf-44aeb21f7b78",
      "name": "Diviser les URLs de flux RSS en éléments",
      "type": "n8n-nodes-base.splitOut",
      "position": [
        384,
        192
      ],
      "parameters": {
        "options": {},
        "fieldToSplitOut": "[\"Blog's Name\"]"
      },
      "typeVersion": 1
    },
    {
      "id": "eb7a97de-e95e-43f9-81f1-1559e000f7d8",
      "name": "Récupérer le contenu le plus récent du flux RSS",
      "type": "n8n-nodes-base.rssFeedRead",
      "position": [
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        192
      ],
      "parameters": {
        "url": "https://blogsname.blogspot.com/feeds/posts/default",
        "options": {}
      },
      "typeVersion": 1.1
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    {
      "id": "c2c32dda-af3a-4988-bc6c-1a85ebfca720",
      "name": "Normaliser les champs RSS (Contenu & Lien)",
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      "position": [
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      "parameters": {
        "options": {},
        "assignments": {
          "assignments": [
            {
              "id": "00d04dc1-3f58-4027-8807-83d9e1f4fdae",
              "name": "contentSnippet",
              "type": "string",
              "value": "={{ $json.contentSnippet }}"
            },
            {
              "id": "1e12c8ec-8364-4523-a0c7-39e73bbed3f2",
              "name": "link",
              "type": "string",
              "value": "={{ $json.link }}"
            }
          ]
        }
      },
      "typeVersion": 3.4
    },
    {
      "id": "52af44a5-f28a-42c0-8db4-2738959329f3",
      "name": "Sélectionner le dernier élément RSS par date",
      "type": "n8n-nodes-base.code",
      "position": [
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      ],
      "parameters": {
        "jsCode": "const items = $input.all();\nif (items.length === 0) return items;\nconst latestItem = items.sort((a, b) => new Date(b.json.pubDate) - new Date(a.json.pubDate))[0];\nreturn [latestItem];"
      },
      "typeVersion": 2
    },
    {
      "id": "5fc6a338-fb38-4164-a88c-f9567c699753",
      "name": "Générer un résumé et des hashtags avec LLM",
      "type": "@n8n/n8n-nodes-langchain.chainLlm",
      "position": [
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      ],
      "parameters": {
        "text": "={\n  \"promptType\": \"define\",\n  \"text\": \"[\\n  {\\n    \\\"role\\\": \\\"system\\\",\\n    \\\"content\\\": \\\"You summarize texts strictly under {{ $json.maxChars }} characters in a warm, engaging tone, then append exactly 3 relevant hashtags (e.g., #Tag1 #Tag2 #Tag3), then the link. Truncate if needed. Never exceed the limit. If empty, use fallback summary and tags.\\\"\\n  },\\n  {\\n    \\\"role\\\": \\\"user\\\",\\n    \\\"content\\\": \\\"Summarize this in under {{ $json.maxChars }} characters (text only; hashtags and link separate): {{ $json.contentSnippet || 'Discover health and wellbeing tips on our blog!' }}\\\\n\\\\nEnd with: #Hashtag1 #Hashtag2 #Hashtag3 {{ $json.link }}\\\"\\n  }\\n]\",\n  \"batching\": {}\n}",
        "batching": {},
        "promptType": "define"
      },
      "typeVersion": 1.7
    },
    {
      "id": "dc4bfbda-76b8-425f-86c3-4dede50c5b39",
      "name": "Configurer le modèle LLM local (Ollama)",
      "type": "@n8n/n8n-nodes-langchain.lmOllama",
      "position": [
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      ],
      "parameters": {
        "model": "gemma3:12b",
        "options": {}
      },
      "typeVersion": 1
    },
    {
      "id": "a1d1e83e-98dd-4fc6-9b81-90519022f2be",
      "name": "Calculer la limite de caractères du résumé",
      "type": "n8n-nodes-base.code",
      "position": [
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      "parameters": {
        "jsCode": "return items.map(item => {\n  const link = item.json.link;\n  const hashtagReserve = 50;\n  item.json.maxChars = 280 - link.length - 20 - hashtagReserve;\n  item.json.link = link;\n  return item;\n});"
      },
      "typeVersion": 2
    },
    {
      "id": "a400eee2-73f8-42ac-9381-e82043505fda",
      "name": "Définir les URLs de flux RSS",
      "type": "n8n-nodes-base.set",
      "position": [
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      "parameters": {
        "options": {},
        "assignments": {
          "assignments": [
            {
              "id": "e880cd01-0cc9-46bc-b714-117260be234c",
              "name": "Blog's Name",
              "type": "string",
              "value": "https://blogsname.blogspot.com/feeds/posts/default"
            }
          ]
        }
      },
      "typeVersion": 3.4
    },
    {
      "id": "3ece393b-8584-4f7e-8b4e-ebe59720dd40",
      "name": "Lire le dernier hash posté depuis un fichier",
      "type": "n8n-nodes-base.code",
      "position": [
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      ],
      "parameters": {
        "jsCode": "const fs = require('fs');\nconst lastPath = '/.n8n/rss_last_posted.txt';\n\nreturn items.map(item => {\n  let lastPostedHash = '';\n  try {\n    if (fs.existsSync(lastPath)) {\n      lastPostedHash = fs.readFileSync(lastPath, 'utf8').trim();\n    }\n    console.log(\"Read lastPostedHash:\", lastPostedHash);\n  } catch (error) {\n    console.error(\"Failed to read last posted hash:\", error.message);\n  }\n  item.json.lastPostedHash = lastPostedHash;\n  return item;\n});"
      },
      "typeVersion": 2
    },
    {
      "id": "f1caf122-f0cf-41c4-8869-b875c3d9207f",
      "name": "Sauvegarder le hash posté dans un fichier",
      "type": "n8n-nodes-base.code",
      "position": [
        4928,
        176
      ],
      "parameters": {
        "jsCode": "const fs = require('fs');\nconst lastPath = '/.n8n/rss_last_posted.txt';\nconst tempPath = '/.n8n/rss_temp_url.txt';\n\nreturn items.map(item => {\n  let linkHash = item.json.linkHash || '';\n  \n  // Fallback: Read from temp file if linkHash is missing\n  if (!linkHash && fs.existsSync(tempPath)) {\n    try {\n      linkHash = fs.readFileSync(tempPath, 'utf8').trim();\n      console.log(\"Read linkHash from temp file:\", linkHash);\n    } catch (error) {\n      console.error(\"Failed to read temp file:\", error.message);\n    }\n  }\n  \n  if (linkHash) {\n    try {\n      fs.writeFileSync(lastPath, linkHash, 'utf8');\n      console.log(\"Saved linkHash to rss_last_posted.txt:\", linkHash);\n    } catch (error) {\n      console.error(\"Failed to save linkHash:\", error.message);\n    }\n  } else {\n    console.log(\"No linkHash available to save.\");\n  }\n  \n  return item;\n});"
      },
      "typeVersion": 2
    },
    {
      "id": "deece16b-a7fe-4447-a8b0-a8ddd5eca30c",
      "name": "Calculer le hash du lien pour vérification des doublons",
      "type": "n8n-nodes-base.code",
      "position": [
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      ],
      "parameters": {
        "jsCode": "function simpleHash(str) {\n  let hash = 0;\n  for (let i = 0; i < str.length; i++) {\n    const char = str.charCodeAt(i);\n    hash = ((hash << 5) - hash) + char;\n    hash = hash & hash; // Convert to 32-bit integer\n  }\n  return hash.toString(16);\n}\n\nreturn items.map(item => {\n  const link = item.json.link || '';\n  const linkHash = simpleHash(link.trim()); // Trim to remove trailing spaces\n  item.json.linkHash = linkHash;\n  console.log(\"Calculated linkHash:\", linkHash);\n  return item;\n});"
      },
      "typeVersion": 2
    },
    {
      "id": "f8608124-757d-479b-ba94-b76c62a7c615",
      "name": "Comparer les hashs pour vérification des doublons",
      "type": "n8n-nodes-base.code",
      "position": [
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      ],
      "parameters": {
        "jsCode": "const fs = require('fs');\nconst logPath = '/.n8n/debug_log.txt'; // Path to the debug log file\nconst lastPath = '/.n8n/rss_last_posted.txt';\n\nreturn items.map(item => {\n  const linkHash = item.json.linkHash || '';\n  let lastPostedHash = '';\n  try {\n    if (fs.existsSync(lastPath)) {\n      lastPostedHash = fs.readFileSync(lastPath, 'utf8').trim();\n      console.log(\"Comparison - linkHash:\", linkHash, \"lastPostedHash:\", lastPostedHash, \"File Exists:\", fs.existsSync(lastPath));\n    } else {\n      console.log(\"Comparison - File does not exist:\", lastPath);\n    }\n  } catch (error) {\n    console.error(\"Failed to read last posted hash:\", error.message);\n  }\n  const shouldProceed = linkHash !== lastPostedHash;\n  item.json.shouldProceed = shouldProceed;\n  console.log(\"Comparison - shouldProceed:\", shouldProceed, \"Execution ID:\", $execution.id);\n\n  // Log to file\n  try {\n    const logData = {\n      timestamp: new Date().toISOString(),\n      linkHash,\n      lastPostedHash,\n      shouldProceed\n    };\n    fs.appendFileSync(logPath, JSON.stringify(logData) + '\\n');\n    console.log(\"Logged to debug_log.txt\");\n  } catch (error) {\n    console.error(\"Failed to write to debug_log.txt:\", error.message);\n  }\n\n  return item;\n});"
      },
      "typeVersion": 2
    },
    {
      "id": "4fab8e26-a350-46bc-b0ca-d37dbf77533b",
      "name": "Vérification conditionnelle pour nouveau post",
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        "jsCode": "const fs = require('fs');\nconst lastPath = '/.n8n/rss_last_posted.txt';\n\nreturn items.map(item => {\n  const linkHash = item.json.linkHash || '';\n  let lastPostedHash = '';\n  try {\n    if (fs.existsSync(lastPath)) {\n      lastPostedHash = fs.readFileSync(lastPath, 'utf8').trim();\n      console.log(\"Flow Control - linkHash:\", linkHash, \"lastPostedHash:\", lastPostedHash, \"File Exists:\", fs.existsSync(lastPath));\n    } else {\n      console.log(\"Flow Control - File does not exist:\", lastPath);\n    }\n  } catch (error) {\n    console.error(\"Failed to read last posted hash:\", error.message);\n  }\n  const shouldProceed = linkHash !== lastPostedHash;\n  item.json.shouldProceed = shouldProceed;\n  console.log(\"Flow Control - shouldProceed:\", shouldProceed, \"Execution ID:\", $execution.id);\n\n  // Only return items if they should proceed\n  if (shouldProceed) {\n    return item;\n  }\n  return null; // Null items are filtered out by n8n\n}).filter(item => item !== null);"
      },
      "typeVersion": 2
    },
    {
      "id": "52765cc4-2f2f-4b75-823b-2ebbcb265fd9",
      "name": "Extraire l'URL de l'image du HTML du post",
      "type": "n8n-nodes-base.code",
      "position": [
        1728,
        432
      ],
      "parameters": {
        "jsCode": "return items.map(item => {\n  let fullImageUrl = null;\n  if (item.json.body) {\n    const imgMatch = item.json.body.match(/<img[^>]+(?:data-original-height=\"\\d+\"[^>]*|data-original-width=\"\\d+\"[^>]*)*src=[\"'](.*?)[\"']/i);\n    if (imgMatch && imgMatch[1]) {\n      fullImageUrl = imgMatch[1].replace(/=w\\d+-h\\d+/, ''); // Simplified regex for clarity\n    }\n  }\n  item.json.imageUrl = fullImageUrl || null;\n  console.log('Extracted full image URL:', item.json.imageUrl);\n  return item;\n});"
      },
      "typeVersion": 2
    },
    {
      "id": "332fdb2c-4553-4ddd-b796-be1d46c08233",
      "name": "Récupérer le contenu HTML de l'article de blog",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        1536,
        432
      ],
      "parameters": {
        "url": "={{ $json.link }}",
        "options": {
          "response": {
            "response": {
              "responseFormat": "text",
              "outputPropertyName": "body"
            }
          }
        }
      },
      "typeVersion": 4.2
    },
    {
      "id": "c4240336-7dda-4683-9eb4-fc5ce4f715f4",
      "name": "Télécharger l'image du post",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        2080,
        432
      ],
      "parameters": {
        "url": "={{ $json.imageUrl }}",
        "options": {
          "response": {
            "response": {
              "responseFormat": "file"
            }
          }
        }
      },
      "typeVersion": 4.2
    },
    {
      "id": "4ff2834b-76c7-4522-b234-fb2923f300d5",
      "name": "Transformer/Redimensionner l'image pour le téléchargement",
      "type": "n8n-nodes-base.editImage",
      "position": [
        2288,
        432
      ],
      "parameters": {
        "width": 1080,
        "height": 1080,
        "options": {
          "format": "jpeg",
          "fileName": "=blog-image-{{ $execution.id }}.jpeg"
        },
        "operation": "resize"
      },
      "typeVersion": 1,
      "alwaysOutputData": false
    },
    {
      "id": "2bcb9f51-b0f4-415a-8fa2-4bf3a6a9538b",
      "name": "Télécharger l'image vers Postiz",
      "type": "n8n-nodes-postiz.postiz",
      "position": [
        2480,
        432
      ],
      "parameters": {
        "operation": "uploadFile",
        "binaryProperty": "={{ $('Transform/Resize Image for Upload').item.binary }}"
      },
      "typeVersion": 1
    },
    {
      "id": "61deda9e-4fa7-446f-86b3-b7edb84065a4",
      "name": "Filtrer le dernier élément pour le traitement d'image",
      "type": "n8n-nodes-base.code",
      "position": [
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      "parameters": {
        "jsCode": "return items\n  .filter(item => item.json.imageUrl && item.json.imageUrl !== null) // Ensure valid URL\n  .sort((a, b) => new Date(b.json.pubDate) - new Date(a.json.pubDate)) // Sort by pubDate descending\n  .slice(0, 1); // Take the latest item"
      },
      "typeVersion": 2
    },
    {
      "id": "d2501d1e-d607-4585-8fb2-708ea989c389",
      "name": "Boucler sur les éléments RSS pour le traitement",
      "type": "n8n-nodes-base.splitInBatches",
      "position": [
        1184,
        384
      ],
      "parameters": {
        "options": {}
      },
      "executeOnce": true,
      "typeVersion": 3
    },
    {
      "id": "38beb7d1-53ee-4a95-9d76-e5d7b0d3574d",
      "name": "Fusionner les flux de données traités",
      "type": "n8n-nodes-base.merge",
      "position": [
        1120,
        176
      ],
      "parameters": {
        "mode": "combine",
        "options": {
          "includeUnpaired": true
        },
        "combineBy": "combineByPosition"
      },
      "typeVersion": 3.2
    },
    {
      "id": "79a42cb0-45bf-496a-bf4f-b78cb1cbd054",
      "name": "Créer et publier du contenu via Postiz API",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        4640,
        176
      ],
      "parameters": {
        "url": "https://postiz.selfhosteddomain.net/api/public/v1/posts",
        "method": "POST",
        "options": {},
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