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feat(n8n): add school intake workflow v1.1

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Fizzlepoof
2026-05-13 21:32:18 +00:00
parent 8165d7b2a6
commit 31223c875d
4 changed files with 253 additions and 11 deletions
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238
n8n-workflows/18-school-paperless-intake-v1.1.json Normal file
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@@ -0,0 +1,238 @@
{
"name": "Telegram School Intake → Postgres → Paperless v1.1",
"active": false,
"isArchived": false,
"nodes": [
{
"parameters": {
"httpMethod": "POST",
"path": "school/intake/upload",
"responseMode": "lastNode",
"responseData": "allEntries",
"options": {
"rawBody": true
}
},
"id": "school-intake-webhook",
"name": "School Intake Webhook",
"type": "n8n-nodes-base.webhook",
"typeVersion": 2,
"position": [
-1180,
0
]
},
{
"parameters": {
"jsCode": "\nconst req = $input.first().json;\nconst body = req.body || {};\nconst binary = $input.first().binary || {};\nconst upload = binary.data || Object.values(binary)[0];\nif (!upload) throw new Error('Expected multipart file upload in the webhook request.');\nconst required = ['class_name', 'assignment_name', 'submission_kind'];\nfor (const key of required) {\n if (!body[key] || !String(body[key]).trim()) {\n throw new Error('Missing required form field: ' + key + '. Required fields: class_name, assignment_name, submission_kind.');\n }\n}\nconst sanitize = (value, fallback = 'item') => String(value || fallback)\n .trim()\n .toLowerCase()\n .replace(/[^a-z0-9]+/g, '-')\n .replace(/^-+|-+$/g, '')\n .slice(0, 80) || fallback;\nconst stableHash = (str) => {\n let h1 = 0xdeadbeef;\n let h2 = 0x41c6ce57;\n for (let i = 0; i < str.length; i++) {\n const ch = str.charCodeAt(i);\n h1 = Math.imul(h1 ^ ch, 2654435761);\n h2 = Math.imul(h2 ^ ch, 1597334677);\n }\n h1 = Math.imul(h1 ^ (h1 >>> 16), 2246822507) ^ Math.imul(h2 ^ (h2 >>> 13), 3266489909);\n h2 = Math.imul(h2 ^ (h2 >>> 16), 2246822507) ^ Math.imul(h1 ^ (h1 >>> 13), 3266489909);\n return ((h2 >>> 0).toString(16).padStart(8, '0') + (h1 >>> 0).toString(16).padStart(8, '0'));\n};\nconst originalName = upload.fileName || body.filename || 'upload.bin';\nconst extension = (() => {\n const m = String(originalName).match(/(\\.[A-Za-z0-9]{1,10})$/);\n return m ? m[1].toLowerCase() : '';\n})();\nconst fileBytes = Buffer.from(upload.data, 'base64');\nconst checksum = stableHash([originalName, upload.mimeType || '', String(fileBytes.length), upload.data].join('|'));\nconst now = new Date();\nconst intakeId = [\n 'school',\n now.toISOString().slice(0,10).replace(/-/g,''),\n sanitize(body.class_name),\n sanitize(body.assignment_name),\n checksum.slice(0, 12)\n].join('-');\nconst storedFilename = intakeId + extension;\nconst title = [body.class_name, body.assignment_name, body.submission_kind].map(v => String(v).trim()).join(' — ');\nreturn [{\n json: {\n intake_id: intakeId,\n class_name: String(body.class_name).trim(),\n assignment_name: String(body.assignment_name).trim(),\n submission_kind: String(body.submission_kind).trim(),\n semester: body.semester ? String(body.semester).trim() : null,\n course_code: body.course_code ? String(body.course_code).trim() : null,\n paper_kind: body.paper_kind ? String(body.paper_kind).trim() : null,\n notes: body.notes ? String(body.notes).trim().slice(0, 4000) : null,\n source: body.source ? String(body.source).trim() : 'telegram',\n telegram_chat_id: body.telegram_chat_id ? String(body.telegram_chat_id).trim() : null,\n telegram_message_id: body.telegram_message_id ? String(body.telegram_message_id).trim() : null,\n original_filename: originalName,\n stored_filename: storedFilename,\n mime_type: upload.mimeType || 'application/octet-stream',\n file_size_bytes: fileBytes.length,\n checksum_sha256: checksum,\n paperless_title: title,\n received_at: now.toISOString()\n },\n binary: {\n data: {\n ...upload,\n fileName: storedFilename,\n mimeType: upload.mimeType || 'application/octet-stream'\n }\n }\n}];"
},
"id": "normalize-request",
"name": "Normalize Intake Request",
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"position": [
-920,
0
]
},
{
"parameters": {
"operation": "executeQuery",
"query": "INSERT INTO school_paperless_intake (\n intake_id,\n class_name,\n assignment_name,\n submission_kind,\n semester,\n course_code,\n paper_kind,\n notes,\n source,\n telegram_chat_id,\n telegram_message_id,\n original_filename,\n stored_filename,\n mime_type,\n file_size_bytes,\n checksum_sha256,\n status,\n received_at\n)\nVALUES (\n '{{ $json.intake_id }}',\n '{{ $json.class_name.replace(/'/g, \"''\") }}',\n '{{ $json.assignment_name.replace(/'/g, \"''\") }}',\n '{{ $json.submission_kind.replace(/'/g, \"''\") }}',\n {{ $json.semester ? \"'\" + $json.semester.replace(/'/g, \"''\") + \"'\" : 'NULL' }},\n {{ $json.course_code ? \"'\" + $json.course_code.replace(/'/g, \"''\") + \"'\" : 'NULL' }},\n {{ $json.paper_kind ? \"'\" + $json.paper_kind.replace(/'/g, \"''\") + \"'\" : 'NULL' }},\n {{ $json.notes ? \"'\" + $json.notes.replace(/'/g, \"''\") + \"'\" : 'NULL' }},\n '{{ $json.source.replace(/'/g, \"''\") }}',\n {{ $json.telegram_chat_id ? \"'\" + $json.telegram_chat_id.replace(/'/g, \"''\") + \"'\" : 'NULL' }},\n {{ $json.telegram_message_id ? \"'\" + $json.telegram_message_id.replace(/'/g, \"''\") + \"'\" : 'NULL' }},\n '{{ $json.original_filename.replace(/'/g, \"''\") }}',\n '{{ $json.stored_filename.replace(/'/g, \"''\") }}',\n '{{ $json.mime_type.replace(/'/g, \"''\") }}',\n {{ $json.file_size_bytes }},\n '{{ $json.checksum_sha256 }}',\n 'received',\n '{{ $json.received_at }}'::timestamptz\n)\nON CONFLICT (intake_id) DO UPDATE SET\n class_name = EXCLUDED.class_name,\n assignment_name = EXCLUDED.assignment_name,\n submission_kind = EXCLUDED.submission_kind,\n semester = EXCLUDED.semester,\n course_code = EXCLUDED.course_code,\n paper_kind = EXCLUDED.paper_kind,\n notes = EXCLUDED.notes,\n source = EXCLUDED.source,\n telegram_chat_id = EXCLUDED.telegram_chat_id,\n telegram_message_id = EXCLUDED.telegram_message_id,\n original_filename = EXCLUDED.original_filename,\n stored_filename = EXCLUDED.stored_filename,\n mime_type = EXCLUDED.mime_type,\n file_size_bytes = EXCLUDED.file_size_bytes,\n checksum_sha256 = EXCLUDED.checksum_sha256,\n status = 'received',\n received_at = EXCLUDED.received_at,\n updated_at = NOW();"
},
"id": "pg-insert-received",
"name": "Postgres Upsert Intake Received",
"type": "n8n-nodes-base.postgres",
"typeVersion": 2.6,
"position": [
-660,
0
],
"credentials": {
"postgres": {
"id": "SETUP_REQUIRED",
"name": "Shared Postgres"
}
}
},
{
"parameters": {
"method": "POST",
"url": "={{($env.PAPERLESS_BASE_URL || 'https://paperless.paccoco.com').replace(/\\/$/, '') + '/api/documents/post_document/'}}",
"sendHeaders": true,
"headerParameters": {
"parameters": [
{
"name": "Authorization",
"value": "={{'Token ' + $env.PAPERLESS_API_TOKEN}}"
}
]
},
"sendBody": true,
"contentType": "multipart-form-data",
"bodyParameters": {
"parameters": [
{
"name": "document",
"value": "data",
"parameterType": "formBinaryData"
},
{
"name": "title",
"value": "={{$json.paperless_title}}"
}
]
},
"options": {
"timeout": 120000
}
},
"id": "paperless-upload",
"name": "Upload to Paperless",
"type": "n8n-nodes-base.httpRequest",
"typeVersion": 4.2,
"position": [
-400,
0
]
},
{
"parameters": {
"jsCode": "\nconst intake = $('Normalize Intake Request').first().json;\nconst response = $json;\nconst taskId = response.task_id || response.id || response.document?.id || null;\nlet paperlessDocumentId = response.document_id || response.document?.id || null;\nif (!paperlessDocumentId && typeof response === 'object' && response?.id && !response?.task_id) {\n paperlessDocumentId = response.id;\n}\nreturn [{ json: {\n ...intake,\n paperless_task_id: taskId ? String(taskId) : null,\n paperless_document_id: paperlessDocumentId ? String(paperlessDocumentId) : null,\n paperless_response: response,\n uploaded_at: new Date().toISOString()\n}}];"
},
"id": "capture-paperless-response",
"name": "Capture Paperless Response",
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"position": [
-140,
0
]
},
{
"parameters": {
"operation": "executeQuery",
"query": "UPDATE school_paperless_intake\nSET\n paperless_task_id = {{ $json.paperless_task_id ? \"'\" + $json.paperless_task_id.replace(/'/g, \"''\") + \"'\" : 'NULL' }},\n paperless_document_id = {{ $json.paperless_document_id ? \"'\" + $json.paperless_document_id.replace(/'/g, \"''\") + \"'\" : 'NULL' }},\n paperless_title = '{{ $json.paperless_title.replace(/'/g, \"''\") }}',\n status = 'uploaded',\n uploaded_at = '{{ $json.uploaded_at }}'::timestamptz,\n updated_at = NOW()\nWHERE intake_id = '{{ $json.intake_id }}';"
},
"id": "pg-mark-uploaded",
"name": "Postgres Mark Uploaded",
"type": "n8n-nodes-base.postgres",
"typeVersion": 2.6,
"position": [
120,
0
],
"credentials": {
"postgres": {
"id": "SETUP_REQUIRED",
"name": "Shared Postgres"
}
}
},
{
"parameters": {
"jsCode": "\nreturn [{\n json: {\n ok: true,\n intake_id: $json.intake_id,\n status: 'uploaded',\n paperless_task_id: $json.paperless_task_id,\n paperless_document_id: $json.paperless_document_id,\n paperless_title: $json.paperless_title,\n stored_filename: $json.stored_filename,\n received_at: $json.received_at,\n uploaded_at: $json.uploaded_at\n }\n}];"
},
"id": "success-response",
"name": "Return Success Payload",
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"position": [
360,
0
]
}
],
"connections": {
"School Intake Webhook": {
"main": [
[
{
"node": "Normalize Intake Request",
"type": "main",
"index": 0
}
]
]
},
"Normalize Intake Request": {
"main": [
[
{
"node": "Postgres Upsert Intake Received",
"type": "main",
"index": 0
}
]
]
},
"Postgres Upsert Intake Received": {
"main": [
[
{
"node": "Upload to Paperless",
"type": "main",
"index": 0
}
]
]
},
"Upload to Paperless": {
"main": [
[
{
"node": "Capture Paperless Response",
"type": "main",
"index": 0
}
]
]
},
"Capture Paperless Response": {
"main": [
[
{
"node": "Postgres Mark Uploaded",
"type": "main",
"index": 0
}
]
]
},
"Postgres Mark Uploaded": {
"main": [
[
{
"node": "Return Success Payload",
"type": "main",
"index": 0
}
]
]
}
},
"settings": {
"executionOrder": "v1",
"binaryMode": "separate"
},
"staticData": null,
"meta": {
"templateCredsSetupCompleted": false,
"artifactVersion": "v1.1"
},
"pinData": {},
"tags": [
{
"name": "school"
},
{
"name": "paperless"
},
{
"name": "postgres"
},
{
"name": "telegram"
}
]
}

9
n8n-workflows/README.md
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@@ -15,7 +15,7 @@
| 14 | Paperless Inbox Reminder | Scheduled (Monday 9 AM) | Queries Paperless for untagged documents; sends Gotify reminder with oldest items listed, or a ✅ clear if inbox is empty |
| 15 | n8n Self-Health Monitor | Scheduled (every 15 min) | Checks n8n execution history for failures in the past hour; deduplicates via Postgres; pushes Gotify alert with workflow name and error summary |
| 16 | NFS Mount Watchdog | Scheduled (every 5 min) | Probes NFS mount points on PD; if missing: runs mount script, re-probes, restarts affected containers (Plex, Audiobookshelf, Immich); notifies via Gotify on heal or escalation |
| 18 | Telegram School Intake → Postgres → Paperless v1.0 | `POST /webhook/school/intake/upload` | Accepts multipart schoolwork uploads plus class/assignment metadata, writes an intake record to shared Postgres, then uploads into Paperless with deterministic `intake_id` in the filename/title |
| 18 | Telegram School Intake → Postgres → Paperless v1.1 | `POST /webhook/school/intake/upload` | Accepts multipart schoolwork uploads plus class/assignment metadata, writes an intake record to shared Postgres, then uploads into Paperless with deterministic `intake_id` in the filename/title |
| 19 | Paperless School Intake Metadata Enrichment v1.0 | `POST /webhook/school/intake/paperless-enrich` | Handles Paperless post-consumption webhooks, looks up the intake record by deterministic filename, then applies deterministic title/tags and optional document-type/correspondent mapping |
## How to Import
@@ -289,9 +289,9 @@ curl -X POST https://n8n.paccoco.com/webhook/git/push \
}'
```
## Workflow 18 — Telegram School Intake → Postgres → Paperless v1.0
## Workflow 18 — Telegram School Intake → Postgres → Paperless v1.1
Import `18-school-paperless-intake-v1.0.json` for a chat-driven schoolwork intake flow. Supporting notes live at `docs/operations/SCHOOL_PAPERLESS_INTAKE.md` and the tracked schema lives at `docs/reference/SCHOOL_INTAKE_POSTGRES_SCHEMA.sql`.
Import `18-school-paperless-intake-v1.1.json` for a chat-driven schoolwork intake flow. Supporting notes live at `docs/operations/SCHOOL_PAPERLESS_INTAKE.md` and the tracked schema lives at `docs/reference/SCHOOL_INTAKE_POSTGRES_SCHEMA.sql`.
Highlights:
- multipart upload endpoint: `POST /webhook/school/intake/upload`
@@ -299,6 +299,7 @@ Highlights:
- optional fields: `semester`, `course_code`, `paper_kind`, `notes`, `telegram_chat_id`, `telegram_message_id`
- writes intake metadata to shared Postgres before upload
- sends deterministic `intake_id` in the Paperless filename and title correlation data
- v1.1 removes the `require('crypto')` dependency so the workflow can run without adding `crypto` to `NODE_FUNCTION_ALLOW_BUILTIN`
Testing fixture:
- `fixtures/school-paperless-intake-webhook.curl.example.txt`
@@ -306,7 +307,7 @@ Testing fixture:
## Workflow Versioning Convention
For n8n workflow artifacts in this repo:
- include the version in the **filename** (example: `18-school-paperless-intake-v1.0.json`)
- include the version in the **filename** (example: `18-school-paperless-intake-v1.1.json`)
- include the version in the workflow's internal **`name`** field
- bump the version whenever behavior, schema expectations, webhook payload handling, or env requirements change
- update `n8n-workflows/README.md` and `n8n-workflows/TESTING-STATUS.md` when introducing a new workflow version

3
n8n-workflows/TESTING-STATUS.md
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@@ -108,13 +108,14 @@ _Last updated: 2026-05-13_
---
### 18 — Telegram School Intake → Postgres → Paperless v1.0
### 18 — Telegram School Intake → Postgres → Paperless v1.1
**What it does:** Accepts multipart school-work upload plus metadata (`class_name`, `assignment_name`, `submission_kind`, optional semester/course_code/paper_kind), records it in shared Postgres, and uploads it into Paperless with a deterministic `intake_id`-based filename.
**Local artifact checks completed:**
- [x] Workflow JSON validates with `python3 -m json.tool`
- [x] Companion helper script validates with `node --check school/intake/submit_to_n8n.js`
- [x] Class profile example JSON validates with `python3 -m json.tool`
- [x] v1.1 removes the `require('crypto')` dependency for easier live rollout
**Pre-test checklist:**
- [ ] Shared Postgres table `school_paperless_intake` created from `docs/reference/SCHOOL_INTAKE_POSTGRES_SCHEMA.sql`