reading from openapi spec

src_generic/utils/openapi_loader.ts

@@ -0,0 +1,117 @@
+import SwaggerParser from "@apidevtools/swagger-parser";
+import { AppConfig, ResourceConfig, ResourceField, FieldType } from "../types/config";
+
+/**
+ * Maps OpenAPI property types to our internal FieldType
+ */
+function mapOpenApiType(prop: any): FieldType {
+  const type = prop.type;
+  const format = prop.format;
+
+  if (format === "date-time") return "datetime";
+  if (format === "date") return "date";
+  if (prop.enum) return "enum";
+  if (type === "string" && (prop.description?.toLowerCase().includes("image") || prop.name?.toLowerCase().includes("icon"))) return "image";
+  
+  switch (type) {
+    case "integer":
+    case "number": return "number";
+    case "boolean": return "boolean";
+    case "object": return "object";
+    case "array": return "array";
+    default: return "string";
+  }
+}
+
+/**
+ * Recursively converts OpenAPI schemas to ResourceField map
+ */
+function parseSchemaFields(schema: any): Record<string, ResourceField> {
+  const fields: Record<string, ResourceField> = {};
+  const properties = schema.properties || {};
+  const required = schema.required || [];
+
+  for (const [key, prop] of Object.entries(properties) as any) {
+    fields[key] = {
+      type: mapOpenApiType(prop),
+      label: prop.title || key.charAt(0).toUpperCase() + key.slice(1).replace(/_/g, " "),
+      required: required.includes(key),
+      options: prop.enum,
+      readOnly: prop.readOnly || key === "id" || key === "created_at" || key === "updated_at",
+    };
+
+    if (fields[key].type === "object" && prop.properties) {
+      fields[key].schema = parseSchemaFields(prop);
+    }
+  }
+
+  return fields;
+}
+
+/**
+ * Scans paths to identify resources and their basic configuration
+ */
+export async function loadConfigFromOpenApi(baseUrl: string): Promise<AppConfig> {
+  // 1. Parse and dereference the spec (handles all $ref)
+  const api = await SwaggerParser.dereference(
+    new URL("/openapi.json", baseUrl).href
+  );
+
+  const resources: ResourceConfig[] = [];
+  const paths = api.paths || {};
+
+  // Group paths by base resource name (e.g., /expenses, /expenses/{id} -> expenses)
+  const resourcePaths: Record<string, any> = {};
+
+  for (const path of Object.keys(paths)) {
+    const base = path.split("/")[1];
+    if (!base) continue;
+
+    if (!resourcePaths[base]) resourcePaths[base] = { path, methods: [] };
+    const methods = Object.keys(paths[path] || {});
+    resourcePaths[base].methods.push(...methods);
+    
+    // We prefer the plural GET path for schema extraction
+    if (!path.includes("{") && paths[path]?.get?.responses?.["200"]) {
+        resourcePaths[base].listPath = path;
+    }
+  }
+
+  // Generate ResourceConfig for each identified base path
+  for (const [name, info] of Object.entries(resourcePaths)) {
+    const listPath = info.listPath || `/${name}`;
+    const listOp = paths[listPath]?.get;
+    if (!listOp) continue;
+
+    // Use common naming conventions or metadata from the spec
+    const label = name.charAt(0).toUpperCase() + name.slice(1, -1); // naive singularization
+    const pluralLabel = name.charAt(0).toUpperCase() + name.slice(1);
+
+    // Extract schema from the 200 response of the list endpoint
+    let schema: any = null;
+    const responseSchema = listOp.responses?.["200"]?.content?.["application/json"]?.schema;
+
+    if (responseSchema?.type === "array" && responseSchema.items) {
+      schema = responseSchema.items;
+    } else {
+      schema = responseSchema;
+    }
+
+    if (schema) {
+      resources.push({
+        name,
+        label: schema.title || label,
+        pluralLabel: pluralLabel,
+        endpoint: listPath,
+        primaryKey: "id", // assume 'id' as default or look for 'required' + 'unique'
+        fields: parseSchemaFields(schema),
+      });
+    }
+  }
+
+  return {
+    baseUrl: import.meta.env.VITE_API_BASE_URL || (api.servers?.[0]?.url ?? ""),
+    authBaseUrl: import.meta.env.VITE_AUTH_BASE_URL || "",
+    resources,
+  };
+}