managarten/apps/api/src/modules/planta/routes.ts

/**
 * Planta module — Photo upload + AI plant analysis
 * Ported from apps/planta/apps/server
 *
 * CRUD for plants, photos, watering handled by mana-sync.
 * This module handles S3 uploads and Gemini Vision analysis.
 */

import { Hono } from 'hono';
import { logger, type AuthVariables } from '@mana/shared-hono';

const LLM_URL = process.env.MANA_LLM_URL || 'http://localhost:3025';

const routes = new Hono<{ Variables: AuthVariables }>();

// ─── Photo Upload (server-only: S3 storage) ─────────────────

routes.post('/photos/upload', async (c) => {
	const userId = c.get('userId');
	const formData = await c.req.formData();
	const file = formData.get('file') as File | null;
	const plantId = formData.get('plantId') as string | null;

	if (!file) return c.json({ error: 'No file provided' }, 400);
	if (file.size > 10 * 1024 * 1024) return c.json({ error: 'File too large (max 10MB)' }, 400);

	try {
		const { uploadImageToMedia } = await import('../../lib/media');
		const buffer = await file.arrayBuffer();
		const result = await uploadImageToMedia(buffer, file.name, { app: 'planta', userId });

		return c.json(
			{
				storagePath: result.id,
				publicUrl: result.urls.original,
				mediaId: result.id,
				plantId,
			},
			201
		);
	} catch (err) {
		logger.error('planta.upload_failed', {
			error: err instanceof Error ? err.message : String(err),
		});
		return c.json({ error: 'Upload failed' }, 500);
	}
});

// ─── AI Analysis (server-only: Gemini Vision) ───────────────

routes.post('/analysis/identify', async (c) => {
	const { photoUrl } = await c.req.json();
	if (!photoUrl) return c.json({ error: 'photoUrl required' }, 400);

	try {
		const res = await fetch(`${LLM_URL}/api/v1/chat/completions`, {
			method: 'POST',
			headers: { 'Content-Type': 'application/json' },
			body: JSON.stringify({
				messages: [
					{
						role: 'system',
						content:
							'Du bist ein Pflanzenexperte. Analysiere das Bild und gib JSON zurück: {scientificName, commonNames[], confidence, healthAssessment, wateringAdvice, lightAdvice, generalTips[]}',
					},
					{
						role: 'user',
						content: [
							{ type: 'text', text: 'Analysiere diese Pflanze.' },
							{ type: 'image_url', image_url: { url: photoUrl } },
						],
					},
				],
				model: process.env.VISION_MODEL || 'gemini-2.0-flash',
				response_format: { type: 'json_object' },
			}),
		});

		if (!res.ok) return c.json({ error: 'AI analysis failed' }, 502);

		const data = await res.json();
		const content = data.choices?.[0]?.message?.content;
		const analysis = typeof content === 'string' ? JSON.parse(content) : content;

		return c.json(analysis);
	} catch (err) {
		logger.error('planta.analysis_failed', {
			error: err instanceof Error ? err.message : String(err),
		});
		return c.json({ error: 'Analysis failed' }, 500);
	}
});

export { routes as plantaRoutes };