Initial commit: Plant Disease Identification app

- Next.js 16 App Router project with Tailwind CSS
- Plant disease knowledge base (93 diseases, 25 plants)
- Image upload with client+server preprocessing
- ML inference pipeline with mock/demo fallback
- Responsive results page with disease cards and treatment
- Full test suite (285 passing tests)
This commit is contained in:
2026-06-05 19:21:16 -04:00
commit 820a872f07
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import React from "react";
import Link from "next/link";
import { notFound } from "next/navigation";
import { getPlantById, type Disease } from "@/data/plants";
import type { Metadata } from "next";
interface Props {
params: Promise<{ plantId: string }>;
}
export async function generateStaticParams() {
const { plants } = await import("@/data/plants");
return plants.map((plant) => ({
plantId: plant.id,
}));
}
export async function generateMetadata({ params }: Props): Promise<Metadata> {
const { plantId } = await params;
const plant = getPlantById(plantId);
if (!plant) {
return { title: "Plant Not Found" };
}
return {
title: `${plant.commonName} — Diseases & Care`,
description: `Learn about ${plant.commonName} (${plant.scientificName}) diseases, symptoms, causes, and treatments. ${plant.diseases.length} diseases documented.`,
};
}
/* ─── Severity badge ─── */
function SeverityBadge({ severity }: { severity: Disease["severity"] }) {
const colors: Record<Disease["severity"], string> = {
low: "bg-leaf-green-100 text-leaf-green-800 dark:bg-leaf-green-900/40 dark:text-leaf-green-300",
moderate: "bg-warning-amber-100 text-warning-amber-800 dark:bg-warning-amber-900/40 dark:text-warning-amber-300",
high: "bg-red-100 text-red-800 dark:bg-red-900/40 dark:text-red-300",
critical: "bg-red-100 text-red-800 dark:bg-red-900/40 dark:text-red-300",
};
const labels: Record<Disease["severity"], string> = {
low: "Low",
moderate: "Moderate",
high: "High",
critical: "Critical",
};
return (
<span
className={`inline-flex items-center px-2.5 py-0.5 rounded-full text-xs font-medium ${colors[severity]}`}
>
{severity === "critical" ? "🚨 " : ""}
{labels[severity]} Severity
</span>
);
}
/* ─── Disease type badge ─── */
function TypeBadge({ type }: { type: Disease["type"] }) {
const colors: Record<Disease["type"], string> = {
fungal: "bg-purple-100 text-purple-800 dark:bg-purple-900/40 dark:text-purple-300",
bacterial: "bg-blue-100 text-blue-800 dark:bg-blue-900/40 dark:text-blue-300",
viral: "bg-pink-100 text-pink-800 dark:bg-pink-900/40 dark:text-pink-300",
pest: "bg-orange-100 text-orange-800 dark:bg-orange-900/40 dark:text-orange-300",
physiological: "bg-zinc-100 text-zinc-800 dark:bg-zinc-700 dark:text-zinc-300",
};
return (
<span
className={`inline-flex items-center px-2.5 py-0.5 rounded-full text-xs font-medium ${colors[type]}`}
>
{type.charAt(0).toUpperCase() + type.slice(1)}
</span>
);
}
/* ─── Disease card (expandable) ─── */
function DiseaseCard({ disease }: { disease: Disease }) {
return (
<div
id={`disease-${disease.id}`}
className="rounded-xl border border-zinc-200 dark:border-zinc-700 bg-white dark:bg-zinc-900 overflow-hidden shadow-sm hover:shadow-md transition-shadow"
>
{/* Card header */}
<div className="p-5 sm:p-6">
<div className="flex flex-wrap items-start justify-between gap-3 mb-3">
<div>
<h3 className="text-lg font-semibold text-zinc-900 dark:text-zinc-100">
{disease.name}
</h3>
{disease.scientificName && (
<p className="text-sm text-zinc-500 dark:text-zinc-400 italic mt-0.5">
{disease.scientificName}
</p>
)}
</div>
<div className="flex flex-wrap gap-2">
<TypeBadge type={disease.type} />
<SeverityBadge severity={disease.severity} />
</div>
</div>
<p className="text-sm text-zinc-600 dark:text-zinc-300 leading-relaxed mb-4">
{disease.description}
</p>
{/* Details grid */}
<div className="grid grid-cols-1 md:grid-cols-2 gap-4">
{/* Symptoms */}
<div>
<h4 className="text-xs font-semibold uppercase tracking-wider text-red-600 dark:text-red-400 mb-2 flex items-center gap-1">
<span aria-hidden="true"></span> Symptoms
</h4>
<ul className="space-y-1.5">
{disease.symptoms.map((symptom, i) => (
<li
key={i}
className="flex items-start gap-2 text-sm text-zinc-600 dark:text-zinc-300"
>
<span className="mt-1 shrink-0 h-1.5 w-1.5 rounded-full bg-red-400 dark:bg-red-500" />
{symptom}
</li>
))}
</ul>
</div>
{/* Causes */}
<div>
<h4 className="text-xs font-semibold uppercase tracking-wider text-orange-600 dark:text-orange-400 mb-2 flex items-center gap-1">
<span aria-hidden="true">🔍</span> Causes
</h4>
<ul className="space-y-1.5">
{disease.causes.map((cause, i) => (
<li
key={i}
className="flex items-start gap-2 text-sm text-zinc-600 dark:text-zinc-300"
>
<span className="mt-1 shrink-0 h-1.5 w-1.5 rounded-full bg-orange-400 dark:bg-orange-500" />
{cause}
</li>
))}
</ul>
</div>
{/* Treatment Steps */}
<div>
<h4 className="text-xs font-semibold uppercase tracking-wider text-leaf-green-600 dark:text-leaf-green-400 mb-2 flex items-center gap-1">
<span aria-hidden="true">💊</span> Treatment Steps
</h4>
<ol className="space-y-1.5 list-decimal list-inside">
{disease.treatmentSteps.map((step, i) => (
<li
key={i}
className="text-sm text-zinc-600 dark:text-zinc-300"
>
{step}
</li>
))}
</ol>
</div>
{/* Prevention Tips */}
<div>
<h4 className="text-xs font-semibold uppercase tracking-wider text-leaf-green-600 dark:text-leaf-green-400 mb-2 flex items-center gap-1">
<span aria-hidden="true">🛡</span> Prevention Tips
</h4>
<ul className="space-y-1.5">
{disease.preventionTips.map((tip, i) => (
<li
key={i}
className="flex items-start gap-2 text-sm text-zinc-600 dark:text-zinc-300"
>
<span className="mt-1 shrink-0 h-1.5 w-1.5 rounded-full bg-leaf-green-400 dark:bg-leaf-green-500" />
{tip}
</li>
))}
</ul>
</div>
</div>
</div>
</div>
);
}
/* ─── Plant Detail Page ─── */
export default async function PlantDetailPage({ params }: Props) {
const { plantId } = await params;
const plant = getPlantById(plantId);
if (!plant) {
notFound();
}
return (
<div className="mx-auto max-w-4xl px-4 sm:px-6 lg:px-8 py-8 sm:py-12">
{/* Breadcrumb */}
<nav className="mb-6 text-sm" aria-label="Breadcrumb">
<ol className="flex items-center gap-2 text-zinc-500 dark:text-zinc-400">
<li>
<Link href="/" className="hover:text-leaf-green-600 dark:hover:text-leaf-green-400 transition-colors">
Home
</Link>
</li>
<li aria-hidden="true">/</li>
<li>
<Link href="/browse" className="hover:text-leaf-green-600 dark:hover:text-leaf-green-400 transition-colors">
Browse
</Link>
</li>
<li aria-hidden="true">/</li>
<li className="text-zinc-800 dark:text-zinc-200 font-medium">
{plant.commonName}
</li>
</ol>
</nav>
{/* Plant hero */}
<div className="flex flex-col sm:flex-row sm:items-start gap-6 mb-10">
{/* Emoji illustration */}
<div className="flex items-center justify-center h-32 w-32 sm:h-40 sm:w-40 shrink-0 rounded-2xl bg-gradient-to-br from-leaf-green-50 to-leaf-green-100 dark:from-leaf-green-950 dark:to-leaf-green-900">
<span className="text-6xl sm:text-7xl" role="img" aria-hidden="true">
{plant.imageEmoji}
</span>
</div>
<div className="flex-1 min-w-0">
<h1 className="text-3xl sm:text-4xl font-bold text-zinc-900 dark:text-zinc-100">
{plant.commonName}
</h1>
<p className="text-base text-zinc-500 dark:text-zinc-400 italic mt-1">
{plant.scientificName}
</p>
<p className="text-sm text-zinc-500 dark:text-zinc-400 mt-1">
Family: <span className="font-medium">{plant.family}</span>
{" · "}
Category:{" "}
<span className="font-medium capitalize">{plant.category}</span>
</p>
<p className="mt-3 text-sm text-zinc-600 dark:text-zinc-300 leading-relaxed">
{plant.description}
</p>
<div className="mt-3 flex items-start gap-2 text-sm text-zinc-500 dark:text-zinc-400">
<span aria-hidden="true">💚</span>
<span>{plant.careSummary}</span>
</div>
</div>
</div>
{/* Identify disease CTA */}
<div className="mb-10 rounded-xl bg-gradient-to-r from-leaf-green-50 to-soil-brown-50 dark:from-leaf-green-950 dark:to-soil-brown-950 border border-leaf-green-200 dark:border-leaf-green-800 p-5 sm:p-6">
<div className="flex flex-col sm:flex-row sm:items-center sm:justify-between gap-4">
<div>
<h2 className="text-base font-semibold text-zinc-900 dark:text-zinc-100">
🧐 Spot a problem on your {plant.commonName.toLowerCase()}?
</h2>
<p className="text-sm text-zinc-600 dark:text-zinc-400 mt-1">
Upload a photo for AI-powered disease identification.
</p>
</div>
<Link
href="/browse"
className="inline-flex items-center gap-2 shrink-0 rounded-lg bg-leaf-green-600 px-5 py-2.5 text-sm font-medium text-white shadow-sm transition-colors hover:bg-leaf-green-700 focus:outline-none focus:ring-2 focus:ring-leaf-green-500 focus:ring-offset-2"
>
📸 Identify a Disease
</Link>
</div>
</div>
{/* Disease list */}
<div>
<h2 className="text-xl font-semibold text-zinc-900 dark:text-zinc-100 mb-2">
Known Diseases
</h2>
<p className="text-sm text-zinc-500 dark:text-zinc-400 mb-6">
{plant.diseases.length === 0
? "No diseases currently documented for this plant."
: `${plant.diseases.length} ${plant.diseases.length === 1 ? "disease" : "diseases"} documented for ${plant.commonName}.`}
</p>
{plant.diseases.length > 0 ? (
<div className="space-y-6">
{plant.diseases.map((disease) => (
<DiseaseCard key={disease.id} disease={disease} />
))}
</div>
) : (
<div className="rounded-xl border border-dashed border-zinc-300 dark:border-zinc-700 p-10 text-center">
<span className="text-4xl block mb-3" aria-hidden="true">🌿</span>
<p className="text-zinc-500 dark:text-zinc-400 text-sm">
Disease data for {plant.commonName} is being researched and will be added soon.
</p>
</div>
)}
</div>
</div>
);
}