{ "name": "Main: Submit Assignment", "nodes": [ { "parameters": { "httpMethod": "POST", "path": "submit", "options": {} }, "id": "webhook-trigger", "name": "Webhook Submit", "type": "n8n-nodes-base.webhook", "position": [ 250, 300 ], "typeVersion": 1 }, { "parameters": { "jsCode": "const Database = require('better-sqlite3');\nconst db = new Database('e:/repos/golearn/data/curriculum.db');\n\nconst row = db.prepare('SELECT MAX(cycle_num) as max_cycle FROM cycles').get();\ndb.close();\n\nreturn {\n json: {\n max_cycle: row.max_cycle\n }\n};", "mode": "runOnceForAllItems" }, "id": "check-cycle", "name": "Check Current Cycle", "type": "n8n-nodes-base.code", "position": [ 450, 300 ], "typeVersion": 2 }, { "parameters": { "conditions": { "boolean": [ { "value1": "={{ $json.max_cycle }}", "value2": true, "operation": "isEmpty" } ] } }, "id": "is-first-cycle", "name": "Is First Cycle?", "type": "n8n-nodes-base.if", "position": [ 650, 300 ], "typeVersion": 1 }, { "parameters": { "jsCode": "const Database = require('better-sqlite3');\nconst db = new Database('e:/repos/golearn/data/curriculum.db');\n\nconst bootstrapData = $node['Read Bootstrap'].json;\nconst curriculumJson = JSON.stringify(bootstrapData);\n\ndb.prepare('INSERT INTO cycles (cycle_num, curriculum_json, status) VALUES (?, ?, ?)').run(1, curriculumJson, 'active');\ndb.close();\n\nreturn {\n json: {\n success: true,\n curriculum: bootstrapData\n }\n};", "mode": "runOnceForAllItems" }, "id": "insert-bootstrap", "name": "Insert Bootstrap Cycle", "type": "n8n-nodes-base.code", "position": [ 850, 200 ], "typeVersion": 2 }, { "parameters": { "filePath": "e:/repos/golearn/scripts/bootstrap-curriculum.json", "options": {} }, "id": "read-bootstrap", "name": "Read Bootstrap", "type": "n8n-nodes-base.readBinaryFile", "position": [ 850, 100 ], "typeVersion": 1 }, { "parameters": { "jsCode": "const Database = require('better-sqlite3');\nconst db = new Database('e:/repos/golearn/data/curriculum.db');\n\nconst row = db.prepare('SELECT curriculum_json FROM cycles WHERE status=? ORDER BY id DESC LIMIT 1').get('active');\ndb.close();\n\nreturn {\n json: {\n curriculum_json: row ? row.curriculum_json : null\n }\n};", "mode": "runOnceForAllItems" }, "id": "get-current-curriculum", "name": "Get Current Curriculum", "type": "n8n-nodes-base.code", "position": [ 850, 400 ], "typeVersion": 2 }, { "parameters": { "jsCode": "// Extract concepts from current curriculum for assessment\nconst curriculum = JSON.parse($json.curriculum_json);\nconst allConcepts = [];\n\ncurriculum.weeks.forEach(week => {\n allConcepts.push(...week.key_concepts);\n});\n\nreturn {\n json: {\n ...$ input.first().json,\n current_concepts: allConcepts,\n curriculum: curriculum\n }\n};" }, "id": "extract-concepts", "name": "Extract Current Concepts", "type": "n8n-nodes-base.code", "position": [ 1050, 400 ], "typeVersion": 2 }, { "parameters": { "jsCode": "// Parse GitHub URL and file paths\nconst webhook = $input.first().json.body;\nconst repoUrl = webhook.code_repo_url;\nconst filePaths = webhook.code_file_paths || 'main.go';\n\n// Extract owner and repo from URL\nconst match = repoUrl.match(/github\\.com\\/([^\\/]+)\\/([^\\/]+)/);\nif (!match) {\n throw new Error('Invalid GitHub URL format');\n}\n\nconst [, owner, repo] = match;\nconst paths = filePaths.split(',').map(p => p.trim());\n\nreturn paths.map(path => ({\n json: {\n owner,\n repo: repo.replace(/\\.git$/, ''),\n path,\n essay: webhook.essay_text,\n current_concepts: $input.first().json.current_concepts\n }\n}));" }, "id": "parse-github-url", "name": "Parse GitHub URL", "type": "n8n-nodes-base.code", "position": [ 1250, 400 ], "typeVersion": 2 }, { "parameters": { "url": "=https://raw.githubusercontent.com/{{ $json.owner }}/{{ $json.repo }}/main/{{ $json.path }}", "options": {} }, "id": "fetch-code", "name": "Fetch Code Files", "type": "n8n-nodes-base.httpRequest", "position": [ 1450, 400 ], "typeVersion": 3 }, { "parameters": { "jsCode": "// Combine all code files with headers\nconst items = $input.all();\nlet combinedCode = '';\n\nitems.forEach(item => {\n const path = item.json.path;\n const content = typeof item.json.data === 'string' ? item.json.data : JSON.stringify(item.json.data);\n combinedCode += `// FILE: ${path}\\n${content}\\n\\n`;\n});\n\nreturn {\n json: {\n essay: items[0].json.essay,\n code: combinedCode,\n concepts: items[0].json.current_concepts\n }\n};" }, "id": "combine-code", "name": "Combine Code Files", "type": "n8n-nodes-base.code", "position": [ 1650, 400 ], "typeVersion": 2 }, { "parameters": { "model": "gpt-4-turbo-preview", "messages": { "values": [ { "role": "system", "content": "=You are assessing a Go learning project.\n\nThe student was learning these EXACT concepts this cycle:\n{{ $json.concepts.join(', ') }}\n\nSCORING RUBRIC (return integers 1-5 ONLY):\n\n**Code Correctness**:\n1 = syntax errors/won't run\n2 = runs but broken logic/crashes\n3 = works for basic happy path cases\n4 = handles most errors and edge cases\n5 = comprehensive error handling with proper edge case coverage\n\n**Code Idioms**:\n1 = non-Go patterns (Java/Python style code)\n2 = compiles but poor naming/structure/style\n3 = mostly idiomatic Go with minor style issues\n4 = proper Go conventions and patterns throughout\n5 = exemplary Go style worthy of standard library\n\n**Code Completeness**:\n1 = missing >50% required features\n2 = partial implementation 50-75% done\n3 = all core features present and working\n4 = core features + unit tests present\n5 = features + comprehensive tests + documentation\n\nScore EACH concept from the list 1-5 based on evidence in code.\n\nSTRICT JSON OUTPUT:\n{\n \"essay_strengths\": [\"string array of what they explained well\"],\n \"essay_gaps\": [\"string array of missing/fuzzy concepts\"],\n \"code_correctness\": int,\n \"code_idioms\": int,\n \"code_completeness\": int,\n \"detailed_feedback\": \"string (2-3 paragraphs for student)\",\n \"concept_scores\": [\n {\n \"concept\": \"string (EXACT match from provided list)\",\n \"score\": int,\n \"evidence\": \"string\"\n }\n ]\n}" }, { "role": "user", "content": "=# STUDENT ESSAY\n\n{{ $json.essay }}\n\n# STUDENT CODE\n\n{{ $json.code }}" } ] }, "options": { "temperature": 0.4, "maxTokens": 2000 }, "jsonOutput": true }, "id": "assess-work", "name": "Assess Essay and Code", "type": "@n8n/n8n-nodes-langchain.openAi", "position": [ 1850, 400 ], "typeVersion": 1.3 }, { "parameters": { "jsCode": "// Adaptive concept selection algorithm\nconst Database = require('better-sqlite3');\nconst db = new Database('e:/repos/golearn/data/curriculum.db');\nconst fs = require('fs');\n\nconst assessment = JSON.parse($json.message.content);\nconst currentCycleId = $node[\"Check Current Cycle\"].json.max_cycle || 1;\n\n// 1. Gap concepts (score < 3) with weight 3\nconst gaps = assessment.concept_scores\n .filter(c => c.score < 3)\n .map(c => ({\n name: c.concept.toLowerCase().trim(),\n weight: 3,\n source: 'gap'\n }));\n\n// 2. Load topic buffet\nconst buffet = JSON.parse(fs.readFileSync('e:/repos/golearn/data/topic_buffet.json', 'utf8'));\n\n// 3. Get taught weeks\nconst taughtWeeks = db.prepare('SELECT DISTINCT week_id FROM taught_weeks').all().map(r => r.week_id);\n\n// 4. Calculate average score for a week\nfunction calcAvgScore(weekId) {\n const week = buffet.find(w => w.week_id === weekId);\n if (!week) return 0;\n \n const scores = week.concepts.map(c => {\n const row = db.prepare('SELECT current_score FROM concept_mastery WHERE concept_name = ?')\n .get(c.toLowerCase().trim());\n return row ? row.current_score : 0;\n });\n \n return scores.length > 0 ? scores.reduce((a,b) => a+b, 0) / scores.length : 0;\n}\n\n// 5. Find untaught weeks with prerequisites met\nconst untaughtWeeks = buffet\n .filter(w => !taughtWeeks.includes(w.week_id))\n .filter(w => w.prerequisite_week_ids.every(p => calcAvgScore(p) >= 3))\n .slice(0, 6);\n\nconst progression = untaughtWeeks.flatMap(w => \n w.concepts.map(c => ({\n name: c.toLowerCase().trim(),\n weight: 2,\n week_id: w.week_id,\n source: 'progression'\n }))\n);\n\n// 6. Review concepts (seen once, >2 cycles ago)\nconst reviews = db.prepare(\n 'SELECT concept_name FROM concept_mastery WHERE times_seen = 1 AND last_cycle_id < ?'\n).all(currentCycleId - 2).map(r => ({\n name: r.concept_name,\n weight: 1,\n source: 'review'\n}));\n\n// 7. Weighted random sampling\nconst pool = [...gaps, ...progression, ...reviews];\nconst totalWeight = pool.reduce((sum, item) => sum + item.weight, 0);\n\nfunction weightedSample(pool, count) {\n const selected = [];\n const poolCopy = [...pool];\n \n for (let i = 0; i < Math.min(count, poolCopy.length); i++) {\n const totalW = poolCopy.reduce((sum, item) => sum + item.weight, 0);\n let random = Math.random() * totalW;\n \n for (let j = 0; j < poolCopy.length; j++) {\n random -= poolCopy[j].weight;\n if (random <= 0) {\n selected.push(poolCopy[j]);\n poolCopy.splice(j, 1);\n break;\n }\n }\n }\n \n return selected;\n}\n\nconst selected = weightedSample(pool, 14);\nconst selectedNames = selected.map(s => s.name);\nconst priorityWeeks = [...new Set(selected.filter(s => s.week_id).map(s => s.week_id))];\n\ndb.close();\n\nreturn {\n json: {\n assessment,\n selected_concepts: selectedNames,\n priority_weeks: priorityWeeks,\n selection_breakdown: {\n gaps: gaps.length,\n progression: progression.length,\n reviews: reviews.length,\n selected: selected.length\n }\n }\n};" }, "id": "select-concepts", "name": "Select Priority Concepts", "type": "n8n-nodes-base.code", "position": [ 2050, 400 ], "typeVersion": 2 }, { "parameters": { "model": "gpt-4-turbo-preview", "messages": { "values": [ { "role": "system", "content": "You are an expert Go developer and curriculum designer acting as a personal tutor.\n\nGenerate the next 4-week curriculum using these priority concepts:\n{{ $json.selected_concepts.join(', ') }}\n\nRecommended untaught weeks: {{ $json.priority_weeks.join(', ') }}\n\nSTRICT JSON OUTPUT FORMAT:\n{\n \"objective\": \"string (overall learning goal for this 4-week block)\",\n \"weeks\": [\n {\n \"week_number\": int (1-4),\n \"primary_topic\": \"string\",\n \"key_concepts\": [\"string array\"],\n \"capstone\": {\n \"title\": \"string\",\n \"description\": \"string (2-3 sentences)\",\n \"requirements\": [\"string array of 4-6 actionable bullets\"]\n }\n }\n ]\n}\n\nCRITICAL RULES:\n1. Each week must build on previous week\n2. If any selected concept has prerequisite that student scored <3, add to capstone requirements: \"REVIEW [concept] from previous cycle - you scored [X]/5, practice this again\"\n3. Maintain strong pedagogical flow, don't force-fit concepts awkwardly\n4. The goal is progressing toward \"Hirable Backend Engineer\"\n5. After Go Fundamentals, typical progression is: Web APIs \u2192 Databases \u2192 Microservices \u2192 DevOps" }, { "role": "user", "content": "=# ASSESSMENT OF PREVIOUS CYCLE\n\n**Essay Strengths:**\n{{ $json.assessment.essay_strengths.join(', ') }}\n\n**Essay Gaps:**\n{{ $json.assessment.essay_gaps.join(', ') }}\n\n**Code Scores:**\n- Correctness: {{ $json.assessment.code_correctness }}/5\n- Idioms: {{ $json.assessment.code_idioms }}/5\n- Completeness: {{ $json.assessment.code_completeness }}/5\n\n**Concept Scores:**\n{{ $json.assessment.concept_scores.map(c => `- ${c.concept}: ${c.score}/5`).join('\\n') }}\n\nGenerate the next 4-week curriculum that addresses these gaps while progressing forward." } ] }, "options": { "temperature": 0.7, "maxTokens": 2000 }, "jsonOutput": true }, "id": "generate-curriculum", "name": "Generate Next Curriculum", "type": "@n8n/n8n-nodes-langchain.openAi", "position": [ 2250, 400 ], "typeVersion": 1.3 }, { "parameters": { "jsCode": "// Validate curriculum response\nconst response = JSON.parse($json.message.content);\n\nconst isValid = (\n response.objective &&\n Array.isArray(response.weeks) &&\n response.weeks.length === 4 &&\n response.weeks.every(w => \n w.week_number &&\n w.primary_topic &&\n w.capstone &&\n w.capstone.title &&\n w.capstone.requirements\n )\n);\n\nif (!isValid) {\n throw new Error('Invalid curriculum format from LLM');\n}\n\nreturn {\n json: {\n ...$ input.first().json,\n curriculum: response\n }\n};" }, "id": "validate-curriculum", "name": "Validate Curriculum", "type": "n8n-nodes-base.code", "position": [ 2450, 400 ], "typeVersion": 2 }, { "parameters": { "jsCode": "const Database = require('better-sqlite3');\nconst db = new Database('e:/repos/golearn/data/curriculum.db');\n\n// Update existing active cycles to completed\ndb.prepare('UPDATE cycles SET status=? WHERE status=?').run('completed', 'active');\n\n// Get next cycle number\nconst maxCycle = db.prepare('SELECT COALESCE(MAX(cycle_num), 0) as max_num FROM cycles').get();\nconst newCycleNum = maxCycle.max_num + 1;\n\n// Insert new cycle\nconst curriculumJson = JSON.stringify($json.curriculum);\nconst result = db.prepare('INSERT INTO cycles (cycle_num, curriculum_json, status) VALUES (?, ?, ?)').run(newCycleNum, curriculumJson, 'active');\n\nconst newCycleId = result.lastInsertRowid;\ndb.close();\n\nreturn {\n json: {\n new_cycle_id: newCycleId,\n new_cycle_num: newCycleNum\n }\n};", "mode": "runOnceForAllItems" }, "id": "insert-new-cycle", "name": "Insert New Cycle", "type": "n8n-nodes-base.code", "position": [ 2650, 400 ], "typeVersion": 2 }, { "parameters": { "jsCode": "// Update concept mastery scores\nconst Database = require('better-sqlite3');\nconst db = new Database('e:/repos/golearn/data/curriculum.db');\n\nconst assessment = $input.first().json.assessment;\nconst cycleId = $json.new_cycle_id;\n\nassessment.concept_scores.forEach(c => {\n const normalized = c.concept.toLowerCase().trim();\n \n db.prepare(\n 'UPDATE concept_mastery SET current_score = ?, last_cycle_id = ?, times_seen = times_seen + 1 WHERE concept_name = ?'\n ).run(c.score, cycleId, normalized);\n});\n\ndb.close();\n\nreturn {\n json: {\n ...$input.first().json,\n cycle_id: cycleId,\n cycle_num: $json.new_cycle_num\n }\n};" }, "id": "update-mastery", "name": "Update Concept Mastery", "type": "n8n-nodes-base.code", "position": [ 2850, 400 ], "typeVersion": 2 }, { "parameters": { "jsCode": "// Build plateau alerts\nconst Database = require('better-sqlite3');\nconst db = new Database('e:/repos/golearn/data/curriculum.db');\n\nconst assessment = $input.first().json.assessment;\n\nconst plateaus = assessment.concept_scores\n .filter(c => {\n const normalized = c.concept.toLowerCase().trim();\n const row = db.prepare(\n 'SELECT times_seen, current_score FROM concept_mastery WHERE concept_name = ?'\n ).get(normalized);\n \n return row && row.times_seen >= 3 && c.score < 3;\n })\n .map(c => {\n const normalized = c.concept.toLowerCase().trim();\n const row = db.prepare(\n 'SELECT times_seen FROM concept_mastery WHERE concept_name = ?'\n ).get(normalized);\n \n return {\n concept: c.concept,\n cycles_struggling: row.times_seen,\n message: `Struggled with ${c.concept} for ${row.times_seen} cycles`\n };\n });\n\ndb.close();\n\nreturn {\n json: {\n success: true,\n curriculum: $input.first().json.curriculum,\n assessment: {\n code_correctness: assessment.code_correctness,\n code_idioms: assessment.code_idioms,\n code_completeness: assessment.code_completeness,\n detailed_feedback: assessment.detailed_feedback,\n essay_strengths: assessment.essay_strengths,\n essay_gaps: assessment.essay_gaps,\n concept_scores: assessment.concept_scores\n },\n plateau_alerts: plateaus,\n next_cycle_num: $input.first().json.cycle_num\n }\n};" }, "id": "build-response", "name": "Build Response", "type": "n8n-nodes-base.code", "position": [ 3050, 400 ], "typeVersion": 2 }, { "parameters": { "respondWith": "json", "responseBody": "={{ $json }}", "options": {} }, "id": "respond-success", "name": "Respond Success", "type": "n8n-nodes-base.respondToWebhook", "position": [ 3250, 400 ], "typeVersion": 1 }, { "parameters": { "jsCode": "// Return bootstrap curriculum\nconst fs = require('fs');\nconst bootstrap = JSON.parse(fs.readFileSync('e:/repos/golearn/scripts/bootstrap-curriculum.json', 'utf8'));\n\nreturn {\n json: {\n success: true,\n curriculum: bootstrap,\n assessment: null,\n plateau_alerts: [],\n next_cycle_num: 1,\n message: 'Starting with bootstrap curriculum - complete Week 1-4 and submit your first assessment'\n }\n};" }, "id": "return-bootstrap", "name": "Return Bootstrap", "type": "n8n-nodes-base.code", "position": [ 1050, 200 ], "typeVersion": 2 }, { "parameters": { "respondWith": "json", "responseBody": "={{ $json }}", "options": {} }, "id": "respond-bootstrap", "name": "Respond Bootstrap", "type": "n8n-nodes-base.respondToWebhook", "position": [ 1250, 200 ], "typeVersion": 1 }, { "parameters": { "jsCode": "return {\n json: {\n success: false,\n error_type: error.name || 'workflow_error',\n error_details: error.message,\n message: 'Assessment failed. Please check your submission and try again.'\n }\n};" }, "id": "error-handler", "name": "Error Handler", "type": "n8n-nodes-base.code", "position": [ 2450, 600 ], "typeVersion": 2 }, { "parameters": { "respondWith": "json", "responseBody": "={{ $json }}", "options": { "responseCode": 500 } }, "id": "respond-error", "name": "Respond Error", "type": "n8n-nodes-base.respondToWebhook", "position": [ 2650, 600 ], "typeVersion": 1 } ], "connections": { "Webhook Submit": { "main": [ [ { "node": "Check Current Cycle", "type": "main", "index": 0 } ] ] }, "Check Current Cycle": { "main": [ [ { "node": "Is First Cycle?", "type": "main", "index": 0 } ] ] }, "Is First Cycle?": { "main": [ [ { "node": "Read Bootstrap", "type": "main", "index": 0 } ], [ { "node": "Get Current Curriculum", "type": "main", "index": 0 } ] ] }, "Read Bootstrap": { "main": [ [ { "node": "Insert Bootstrap Cycle", "type": "main", "index": 0 } ] ] }, "Insert Bootstrap Cycle": { "main": [ [ { "node": "Return Bootstrap", "type": "main", "index": 0 } ] ] }, "Return Bootstrap": { "main": [ [ { "node": "Respond Bootstrap", "type": "main", "index": 0 } ] ] }, "Get Current Curriculum": { "main": [ [ { "node": "Extract Current Concepts", "type": "main", "index": 0 } ] ] }, "Extract Current Concepts": { "main": [ [ { "node": "Parse GitHub URL", "type": "main", "index": 0 } ] ] }, "Parse GitHub URL": { "main": [ [ { "node": "Fetch Code Files", "type": "main", "index": 0 } ] ] }, "Fetch Code Files": { "main": [ [ { "node": "Combine Code Files", "type": "main", "index": 0 } ] ] }, "Combine Code Files": { "main": [ [ { "node": "Assess Essay and Code", "type": "main", "index": 0 } ] ] }, "Assess Essay and Code": { "main": [ [ { "node": "Select Priority Concepts", "type": "main", "index": 0 } ] ] }, "Select Priority Concepts": { "main": [ [ { "node": "Generate Next Curriculum", "type": "main", "index": 0 } ] ] }, "Generate Next Curriculum": { "main": [ [ { "node": "Validate Curriculum", "type": "main", "index": 0 } ] ] }, "Validate Curriculum": { "main": [ [ { "node": "Insert New Cycle", "type": "main", "index": 0 } ] ] }, "Insert New Cycle": { "main": [ [ { "node": "Update Concept Mastery", "type": "main", "index": 0 } ] ] }, "Update Concept Mastery": { "main": [ [ { "node": "Build Response", "type": "main", "index": 0 } ] ] }, "Build Response": { "main": [ [ { "node": "Respond Success", "type": "main", "index": 0 } ] ] } }, "settings": { "executionTimeout": 180, "saveExecutionProgress": true, "saveManualExecutions": true } }