Login sequence and inventory/protocol storage groundwork

lib/api.ts

@@ -0,0 +1,63 @@
+import type { ChemicalInventory, SafetyIssue } from '../shared/types';
+
+async function apiFetch(path: string, options: RequestInit = {}): Promise<Response> {
+  const res = await fetch(path, {
+    ...options,
+    credentials: 'include',
+    headers: {
+      'Content-Type': 'application/json',
+      ...options.headers,
+    },
+  });
+  if (!res.ok) {
+    const err = await res.json().catch(() => ({ error: res.statusText }));
+    throw new Error(err.error || 'API error');
+  }
+  return res;
+}
+
+export const chemicalsApi = {
+  list: (): Promise<ChemicalInventory[]> =>
+    apiFetch('/api/chemicals').then(r => r.json()),
+
+  create: (data: Partial<ChemicalInventory>): Promise<ChemicalInventory> =>
+    apiFetch('/api/chemicals', {
+      method: 'POST',
+      body: JSON.stringify(data),
+    }).then(r => r.json()),
+
+  update: (id: string, data: Partial<ChemicalInventory>): Promise<ChemicalInventory> =>
+    apiFetch(`/api/chemicals/${id}`, {
+      method: 'PATCH',
+      body: JSON.stringify(data),
+    }).then(r => r.json()),
+
+  remove: (id: string): Promise<void> =>
+    apiFetch(`/api/chemicals/${id}`, { method: 'DELETE' }).then(() => undefined),
+};
+
+export const protocolsApi = {
+  list: () => apiFetch('/api/protocols').then(r => r.json()),
+
+  create: (formData: FormData) =>
+    fetch('/api/protocols', {
+      method: 'POST',
+      credentials: 'include',
+      body: formData, // Don't set Content-Type — browser sets multipart boundary
+    }).then(r => r.json()),
+
+  createFromText: (title: string, content: string) =>
+    apiFetch('/api/protocols', {
+      method: 'POST',
+      body: JSON.stringify({ title, content }),
+    }).then(r => r.json()),
+
+  saveAnalysis: (id: string, results: SafetyIssue[]) =>
+    apiFetch(`/api/protocols/${id}/analysis`, {
+      method: 'PATCH',
+      body: JSON.stringify({ analysis_results: results }),
+    }).then(r => r.json()),
+
+  remove: (id: string): Promise<void> =>
+    apiFetch(`/api/protocols/${id}`, { method: 'DELETE' }).then(() => undefined),
+};