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import { useState, useCallback } from "react";
import {
ChevronDown,
ChevronRight,
Copy,
Activity,
User,
Stethoscope,
FlaskConical,
Pill,
Syringe,
FileText,
Heart,
Scissors,
ClipboardList,
AlertTriangle,
X,
} from "lucide-react";
/* ── Types ─────────────────────────────────────── */
interface FhirResource {
resourceType: string;
id?: string;
[key: string]: unknown;
}
interface BundleEntry {
fullUrl?: string;
resource: FhirResource;
}
interface FhirBundle {
resourceType: "Bundle";
id?: string;
type?: string;
total?: number;
entry?: BundleEntry[];
}
interface FhirResourceViewerProps {
bundle: FhirBundle;
title?: string;
onClose?: () => void;
}
/* ── Resource type icons & colors ─────────────── */
const RESOURCE_META: Record<
string,
{ icon: typeof Activity; color: string; label: string }
> = {
Patient: { icon: User, color: "var(--fhir-patient)", label: "Patients" },
Encounter: {
icon: Stethoscope,
color: "var(--fhir-encounter)",
label: "Encounters",
},
Condition: {
icon: Heart,
color: "var(--fhir-condition)",
label: "Conditions",
},
Observation: {
icon: FlaskConical,
color: "var(--fhir-observation)",
label: "Observations",
},
MedicationRequest: {
icon: Pill,
color: "var(--fhir-medication)",
label: "Medications",
},
Procedure: {
icon: Scissors,
color: "var(--fhir-procedure)",
label: "Procedures",
},
Immunization: {
icon: Syringe,
color: "var(--fhir-immunization)",
label: "Immunizations",
},
DiagnosticReport: {
icon: FileText,
color: "var(--fhir-diagnostic)",
label: "Diagnostic Reports",
},
AllergyIntolerance: {
icon: AlertTriangle,
color: "var(--fhir-allergy)",
label: "Allergies",
},
CarePlan: {
icon: ClipboardList,
color: "var(--fhir-careplan)",
label: "Care Plans",
},
};
const DEFAULT_META = {
icon: Activity,
color: "var(--text-secondary)",
label: "Resources",
};
/* ── Helpers ───────────────────────────────────── */
function getResourceDisplayName(r: FhirResource): string {
const rt = r.resourceType;
if (rt === "Patient") {
const names = r.name as Array<{ given?: string[]; family?: string }>;
if (names?.[0]) {
return `${(names[0].given ?? []).join(" ")} ${
names[0].family ?? ""
}`.trim();
}
}
if (rt === "Condition" || rt === "Procedure") {
const cc = r.code as {
text?: string;
coding?: Array<{ display?: string }>;
};
return cc?.text ?? cc?.coding?.[0]?.display ?? r.id ?? "—";
}
if (rt === "Observation") {
const cc = r.code as {
text?: string;
coding?: Array<{ display?: string }>;
};
return cc?.text ?? cc?.coding?.[0]?.display ?? r.id ?? "—";
}
if (rt === "MedicationRequest") {
const med = r.medicationCodeableConcept as {
text?: string;
coding?: Array<{ display?: string }>;
};
return med?.text ?? med?.coding?.[0]?.display ?? r.id ?? "—";
}
if (rt === "Encounter") {
const t = r.type as Array<{ text?: string }>;
return t?.[0]?.text ?? r.id ?? "—";
}
if (rt === "Immunization") {
const vc = r.vaccineCode as {
text?: string;
coding?: Array<{ display?: string }>;
};
return vc?.text ?? vc?.coding?.[0]?.display ?? r.id ?? "—";
}
if (rt === "DiagnosticReport") {
const cc = r.code as {
text?: string;
coding?: Array<{ display?: string }>;
};
return cc?.text ?? cc?.coding?.[0]?.display ?? r.id ?? "—";
}
if (rt === "AllergyIntolerance") {
const cc = r.code as {
text?: string;
coding?: Array<{ display?: string }>;
};
return cc?.text ?? cc?.coding?.[0]?.display ?? r.id ?? "—";
}
if (rt === "CarePlan") {
return (r.title as string) ?? r.id ?? "—";
}
return r.id ?? "—";
}
function getResourceDate(r: FhirResource): string | null {
const candidates = [
r.effectiveDateTime,
r.recordedDate,
r.onsetDateTime,
r.occurrenceDateTime,
r.authoredOn,
r.period && (r.period as { start?: string }).start,
r.birthDate,
] as (string | undefined)[];
const d = candidates.find(Boolean);
return d ? String(d).slice(0, 10) : null;
}
function getObservationValue(r: FhirResource): string | null {
if (r.resourceType !== "Observation") return null;
const vq = r.valueQuantity as { value?: number; unit?: string };
if (vq?.value != null) {
return `${Number(vq.value).toFixed(1)} ${vq.unit ?? ""}`.trim();
}
const vcc = r.valueCodeableConcept as { text?: string };
if (vcc?.text) return vcc.text;
return null;
}
/* ── Sub-components ────────────────────────────── */
function ResourceDetail({ resource }: { resource: FhirResource }) {
const [copied, setCopied] = useState(false);
const copyJson = useCallback(() => {
navigator.clipboard.writeText(JSON.stringify(resource, null, 2));
setCopied(true);
setTimeout(() => setCopied(false), 2000);
}, [resource]);
const meta = RESOURCE_META[resource.resourceType] ?? DEFAULT_META;
const skipKeys = new Set(["resourceType", "id", "meta", "text"]);
const entries = Object.entries(resource).filter(([k]) => !skipKeys.has(k));
return (
<div className="bg-[var(--surface-2)]/50 rounded-lg p-3 space-y-2">
{/* Header */}
<div className="flex items-center justify-between">
<div className="flex items-center gap-2">
<span
className="w-2 h-2 rounded-full shrink-0"
style={{ background: meta.color }}
/>
<span className="text-xs font-semibold text-[var(--text-primary)]">
{resource.resourceType}/{resource.id ?? "?"}
</span>
</div>
<button
onClick={copyJson}
className="flex items-center gap-1 text-[10px] text-[var(--text-secondary)] hover:text-[var(--text-primary)]"
>
<Copy size={10} />
{copied ? "Copied!" : "JSON"}
</button>
</div>
{/* Key-value pairs */}
<div className="space-y-1">
{entries.map(([key, val]) => (
<div key={key} className="flex gap-2 text-xs">
<span className="text-[var(--layer1-text)] shrink-0 w-40 truncate">
{key}
</span>
<span className="text-[var(--text-primary)] break-all truncate">
{typeof val === "string"
? val
: typeof val === "number" || typeof val === "boolean"
? String(val)
: JSON.stringify(val)}
</span>
</div>
))}
</div>
</div>
);
}
function ResourceGroup({
resourceType,
resources,
}: {
resourceType: string;
resources: FhirResource[];
}) {
const [expanded, setExpanded] = useState(false);
const [selectedIdx, setSelectedIdx] = useState<number | null>(null);
const meta = RESOURCE_META[resourceType] ?? DEFAULT_META;
const Icon = meta.icon;
return (
<div className="border border-[var(--border)] rounded-lg overflow-hidden">
<button
onClick={() => {
setExpanded(!expanded);
setSelectedIdx(null);
}}
className="w-full text-left px-4 py-2.5 flex items-center gap-3 hover:bg-[var(--surface-2)]/50"
>
{expanded ? (
<ChevronDown size={14} className="text-[var(--text-secondary)]" />
) : (
<ChevronRight size={14} className="text-[var(--text-secondary)]" />
)}
<Icon size={14} style={{ color: meta.color }} />
<span className="text-sm font-medium" style={{ color: meta.color }}>
{meta.label}
</span>
<span className="text-xs text-[var(--text-secondary)] ml-auto">
{resources.length} resource{resources.length !== 1 ? "s" : ""}
</span>
</button>
{expanded && (
<div className="border-t border-[var(--border)]">
{/* Resource list */}
<div className="divide-y divide-gray-800">
{resources.map((r, i) => {
const display = getResourceDisplayName(r);
const date = getResourceDate(r);
const value = getObservationValue(r);
const isSelected = selectedIdx === i;
return (
<div key={r.id ?? i}>
<button
onClick={() => setSelectedIdx(isSelected ? null : i)}
className={`w-full text-left px-4 py-2 flex items-center gap-3 text-xs transition-colors ${
isSelected
? "bg-[var(--surface-2)]"
: "hover:bg-[var(--surface-2)]/40"
}`}
>
<span
className="w-1.5 h-1.5 rounded-full shrink-0"
style={{ background: meta.color }}
/>
<span className="text-[var(--text-primary)] flex-1 truncate">
{display}
</span>
{value && (
<span className="text-cyan-400 font-mono shrink-0">
{value}
</span>
)}
{date && (
<span className="text-[var(--text-secondary)] shrink-0">
{date}
</span>
)}
{isSelected ? (
<ChevronDown
size={12}
className="text-[var(--text-secondary)]"
/>
) : (
<ChevronRight
size={12}
className="text-[var(--text-secondary)]"
/>
)}
</button>
{isSelected && (
<div className="px-4 pb-3">
<ResourceDetail resource={r} />
</div>
)}
</div>
);
})}
</div>
</div>
)}
</div>
);
}
/* ── Main component ────────────────────────────── */
export default function FhirResourceViewer({
bundle,
title,
onClose,
}: FhirResourceViewerProps) {
// Group entries by resource type
const grouped: Record<string, FhirResource[]> = {};
for (const entry of bundle.entry ?? []) {
const rt = entry.resource?.resourceType;
if (!rt) continue;
if (!grouped[rt]) grouped[rt] = [];
grouped[rt].push(entry.resource);
}
// Ordered resource types
const typeOrder = [
"Patient",
"Encounter",
"Condition",
"Observation",
"MedicationRequest",
"Procedure",
"Immunization",
"DiagnosticReport",
"AllergyIntolerance",
"CarePlan",
];
const orderedTypes = [
...typeOrder.filter((t) => grouped[t]),
...Object.keys(grouped).filter((t) => !typeOrder.includes(t)),
];
const totalResources = bundle.entry?.length ?? 0;
return (
<div className="border border-layer3 rounded-xl overflow-hidden bg-[var(--surface)]/80">
{/* Header */}
<div className="flex items-center justify-between px-4 py-3 bg-layer3/10 border-b border-layer3/30">
<div className="flex items-center gap-2">
<Activity size={14} className="text-green-800 dark:text-green-300" />
<span className="text-sm font-semibold text-green-800 dark:text-green-300">
{title ?? "FHIR Resource Viewer"}
</span>
<span className="text-xs text-[var(--text-secondary)]">
{totalResources} resources · {orderedTypes.length} types
</span>
</div>
{onClose && (
<button
onClick={onClose}
className="text-[var(--text-secondary)] hover:text-[var(--text-primary)]"
>
<X size={16} />
</button>
)}
</div>
{/* Synthetic data notice */}
<div className="px-4 py-2 bg-amber-950/60 border-b border-amber-700/50 flex items-center gap-2 text-xs text-amber-300">
<AlertTriangle size={12} className="shrink-0" />
<span>
<strong>Synthea Synthetic Data</strong> — algorithmically generated
patients, not real individuals. No pseudonymisation required.
</span>
</div>
{/* Bundle info bar */}
<div className="px-4 py-2 border-b border-[var(--border)] flex flex-wrap gap-4 text-xs text-[var(--text-secondary)]">
<span>
Bundle ID:{" "}
<span className="text-[var(--text-primary)]">{bundle.id ?? "—"}</span>
</span>
<span>
Type:{" "}
<span className="text-[var(--text-primary)]">
{bundle.type ?? "—"}
</span>
</span>
<span>
Total:{" "}
<span className="text-[var(--text-primary)]">{totalResources}</span>
</span>
</div>
{/* Resource type summary */}
<div className="px-4 py-3 border-b border-[var(--border)]">
<div className="flex flex-wrap gap-2">
{orderedTypes.map((rt) => {
const meta = RESOURCE_META[rt] ?? DEFAULT_META;
return (
<span
key={rt}
className="inline-flex items-center gap-1 text-xs px-2 py-0.5 rounded-full"
style={{
background: `${meta.color}20`,
color: meta.color,
}}
>
{rt} ({grouped[rt].length})
</span>
);
})}
</div>
</div>
{/* Resource groups */}
<div className="p-4 space-y-2 max-h-[500px] overflow-y-auto">
{orderedTypes.map((rt) => (
<ResourceGroup key={rt} resourceType={rt} resources={grouped[rt]} />
))}
</div>
</div>
);
}
|