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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 | /** * Background Task API for LLM-powered worksheet parsing * * POST /api/curriculum/[playerId]/attachments/[attachmentId]/parse/task * - Start parsing as a background task * - Returns a taskId for Socket.IO subscription * - Survives page reloads with event replay * * GET /api/curriculum/[playerId]/attachments/[attachmentId]/parse/task * - Get task ID for an attachment (if parsing is in progress) */ import { and, eq, gte } from 'drizzle-orm' import { readFile } from 'fs/promises' import { NextResponse } from 'next/server' import { join } from 'path' import { db } from '@/db' import { backgroundTasks } from '@/db/schema/background-tasks' import { practiceAttachments } from '@/db/schema/practice-attachments' import { withAuth } from '@/lib/auth/withAuth' import { canPerformAction } from '@/lib/classroom' import { getLimitsForUser } from '@/lib/subscription' import { startWorksheetParsing } from '@/lib/tasks/worksheet-parse' import { getUserId } from '@/lib/viewer' /** * POST - Start worksheet parsing as a background task * * Body (optional): * - additionalContext: string - Additional context/hints for the LLM * - preservedBoundingBoxes: Record<number, BoundingBox> - Bounding boxes to preserve * * Returns: * - taskId: string - ID to subscribe via Socket.IO */ export const POST = withAuth(async (request, { userId, params }) => { try { const { playerId, attachmentId } = (await params) as { playerId: string; attachmentId: string } if (!playerId || !attachmentId) { return NextResponse.json({ error: 'Player ID and Attachment ID required' }, { status: 400 }) } // Authorization check const userId = await getUserId() const canParse = await canPerformAction(userId, playerId, 'start-session') if (!canParse) { return NextResponse.json({ error: 'Not authorized' }, { status: 403 }) } // Enforce monthly offline parsing limit const limits = await getLimitsForUser(userId) const monthStart = new Date() monthStart.setDate(1) monthStart.setHours(0, 0, 0, 0) const parseTasksThisMonth = await db .select({ id: backgroundTasks.id }) .from(backgroundTasks) .where( and( eq(backgroundTasks.type, 'worksheet-parse'), eq(backgroundTasks.userId, userId), gte(backgroundTasks.createdAt, monthStart) ) ) .all() if (parseTasksThisMonth.length >= limits.maxOfflineParsingPerMonth) { return NextResponse.json( { error: 'Monthly parsing limit reached', code: 'PARSING_LIMIT_REACHED', limit: limits.maxOfflineParsingPerMonth, count: parseTasksThisMonth.length, }, { status: 403 } ) } // Get attachment record const attachment = await db .select() .from(practiceAttachments) .where(eq(practiceAttachments.id, attachmentId)) .get() if (!attachment) { return NextResponse.json({ error: 'Attachment not found' }, { status: 404 }) } if (attachment.playerId !== playerId) { return NextResponse.json({ error: 'Attachment not found' }, { status: 404 }) } // Check if there's already an active task for this attachment // The background_tasks table is the source of truth for in-progress tasks const existingTask = await db .select() .from(backgroundTasks) .where(eq(backgroundTasks.status, 'running')) .all() .then((tasks) => tasks.find((t) => { const input = t.input as { attachmentId?: string } | null return input?.attachmentId === attachmentId }) ) if (existingTask) { return NextResponse.json({ taskId: existingTask.id, status: 'already_running', message: 'Parsing already in progress', }) } // Parse request body let additionalContext: string | undefined let preservedBoundingBoxes: | Record<number, { x: number; y: number; width: number; height: number }> | undefined try { const body = await request.json() additionalContext = body?.additionalContext preservedBoundingBoxes = body?.preservedBoundingBoxes } catch { // No body or invalid JSON is fine } // Read the image file const uploadDir = join(process.cwd(), 'data', 'uploads', 'players', playerId) const filepath = join(uploadDir, attachment.filename) const imageBuffer = await readFile(filepath) const base64Image = imageBuffer.toString('base64') const mimeType = attachment.mimeType || 'image/jpeg' const imageDataUrl = `data:${mimeType};base64,${base64Image}` // Start the background task console.log('[ParseTaskAPI] Starting worksheet parsing task for attachment:', attachmentId) const taskId = await startWorksheetParsing({ imageDataUrl, attachmentId, playerId, promptOptions: additionalContext ? { additionalContext } : undefined, preservedBoundingBoxes, _userId: userId, }) console.log('[ParseTaskAPI] Task created with ID:', taskId) return NextResponse.json({ taskId, status: 'started', message: 'Parsing task started', }) } catch (error) { console.error('Error starting parse task:', error) return NextResponse.json( { error: error instanceof Error ? error.message : 'Failed to start parsing' }, { status: 500 } ) } }) /** * GET - Get active task ID for an attachment */ export const GET = withAuth(async (_request, { params }) => { try { const { playerId, attachmentId } = (await params) as { playerId: string; attachmentId: string } if (!playerId || !attachmentId) { return NextResponse.json({ error: 'Player ID and Attachment ID required' }, { status: 400 }) } // Authorization check const userId = await getUserId() const canView = await canPerformAction(userId, playerId, 'view') if (!canView) { return NextResponse.json({ error: 'Not authorized' }, { status: 403 }) } // Find active task for this attachment const tasks = await db .select() .from(backgroundTasks) .where(eq(backgroundTasks.type, 'worksheet-parse')) .all() const activeTask = tasks.find((t) => { if (t.status !== 'running' && t.status !== 'pending') return false const input = t.input as { attachmentId?: string } | null return input?.attachmentId === attachmentId }) if (activeTask) { return NextResponse.json({ taskId: activeTask.id, status: activeTask.status, progress: activeTask.progress, progressMessage: activeTask.progressMessage, }) } return NextResponse.json({ taskId: null, status: 'none', message: 'No active parsing task', }) } catch (error) { console.error('Error getting parse task:', error) return NextResponse.json({ error: 'Failed to get task status' }, { status: 500 }) } }) |