Initial commit

shared/resources.js

@@ -0,0 +1,94 @@
+const path = require('path');
+const { getResourceDir, resourceTypeToDirName } = require('./paths');
+const { ensureDir, listJsonFiles, readJsonIfExists, writeJson } = require('./fs');
+
+function resourcePath(resourceType, resourceId) {
+  return path.join(getResourceDir(resourceType), `${resourceId}.json`);
+}
+
+function nowIso() {
+  return new Date().toISOString();
+}
+
+function createResourceDocument({
+  id,
+  resource_type,
+  desired_state,
+  current_state,
+  last_applied_state,
+  metadata,
+  created_at,
+  updated_at,
+}) {
+  const timestamp = nowIso();
+
+  return {
+    id,
+    resource_type,
+    schema_version: 'v1',
+    desired_state: desired_state || {},
+    current_state: current_state || {},
+    last_applied_state: last_applied_state || {},
+    metadata: metadata || {},
+    created_at: created_at || timestamp,
+    updated_at: updated_at || timestamp,
+  };
+}
+
+async function getResource(resourceType, resourceId) {
+  return readJsonIfExists(resourcePath(resourceType, resourceId));
+}
+
+async function saveResource(document) {
+  const existing = await getResource(document.resource_type, document.id);
+  const next = createResourceDocument({
+    ...document,
+    created_at: existing ? existing.created_at : document.created_at,
+    updated_at: nowIso(),
+  });
+
+  await writeJson(resourcePath(next.resource_type, next.id), next);
+  return next;
+}
+
+async function patchResourceState(resourceType, resourceId, patch) {
+  const existing = await getResource(resourceType, resourceId);
+
+  if (!existing) {
+    return null;
+  }
+
+  return saveResource({
+    ...existing,
+    desired_state: patch.desired_state || existing.desired_state,
+    current_state: patch.current_state || existing.current_state,
+    last_applied_state: patch.last_applied_state || existing.last_applied_state,
+    metadata: patch.metadata || existing.metadata,
+  });
+}
+
+async function listResources(resourceType) {
+  const files = await listJsonFiles(getResourceDir(resourceType));
+  return Promise.all(files.map((filePath) => readJsonIfExists(filePath)));
+}
+
+async function listAllResources() {
+  const result = {};
+
+  for (const resourceType of Object.keys(resourceTypeToDirName)) {
+    await ensureDir(getResourceDir(resourceType));
+    result[resourceType] = await listResources(resourceType);
+  }
+
+  return result;
+}
+
+module.exports = {
+  createResourceDocument,
+  getResource,
+  saveResource,
+  patchResourceState,
+  listResources,
+  listAllResources,
+};
+