openapi-spec-reader (#10)

### Summary of Changes:
1.  **Spec-Driven Enums**:
    - Updated `openapi_loader.ts` to collect all standalone enum schemas (e.g., `FetchRequestStatus`) into the `AppConfig.enums` map.
    - Implemented `mergeProperties` and `oneOf`/`anyOf` resolution in `openapi_loader.ts` to ensure complex schemas like `FetchRequest` (using `allOf`) and `source` (using `oneOf`) are correctly parsed.
2.  **Customizable Labeling**:
    - Added `enumOption` (template-based) and `enumLabels` (mapping-based) to the config and field types.
    - Implemented `resolveTemplate` in `utils/options.ts` to handle placeholders like `'{name} {number}'` or plain field names.
3.  **UI Integration**:
    - **`FormField.tsx`**: Updated relation and enum selects to use `getFieldOptions()` for correct key/value pairs and labels. Added value normalization to extract keys from API objects.
    - **`EnhancedTable.tsx`**: Updated `valueOptions` to use key/value pairs for `singleSelect` and updated `FieldRenderer` to show the human-readable label for enums.
    - **`FilterBar.tsx`**: Updated `extractOptions` to use spec-driven labels for enum filters.
    - **`ResourceView.tsx`**: Centralized filter matching logic into a `getDisplayString` helper, ensuring filter comparisons use the same templates as the UI labels.
4. **App Fixes**:
    - `FetchRequests.tsx` and `FetchRequestDetail.tsx` now derive status and format options from the OpenAPI spec via `useConfig()` instead of using hardcoded arrays.

Reviewed-on: #10
Co-authored-by: Vishesh 'ironeagle' Bangotra <aetoskia@gmail.com>
Co-committed-by: Vishesh 'ironeagle' Bangotra <aetoskia@gmail.com>

react-openapi/utils/openapi_loader.ts

@@ -36,6 +36,26 @@ function mapOpenApiType(prop: any): FieldType {
 /**
  * Recursively converts OpenAPI schemas to ResourceField map
  */
+function mergeProperties(schema: any): { properties: Record<string, any>; required: string[] } {
+  let properties: Record<string, any> = {};
+  let required: string[] = [];
+
+  if (schema.allOf) {
+    for (const sub of schema.allOf) {
+      const merged = mergeProperties(sub);
+      properties = { ...properties, ...merged.properties };
+      required = [...required, ...merged.required];
+    }
+  }
+  if (schema.properties) {
+    properties = { ...properties, ...schema.properties };
+  }
+  if (schema.required) {
+    required = [...required, ...schema.required];
+  }
+  return { properties, required };
+}
+
 function parseSchemaFields(
   schema: any,
   resourceName: string,
@@ -43,12 +63,19 @@ function parseSchemaFields(
   configuration: Record<string, any> = {}
 ): Record<string, ResourceField> {
   const fields: Record<string, ResourceField> = {};
-  const properties = schema.properties || {};
-  const required = schema.required || [];
+  const { properties, required } = mergeProperties(schema);
   const overrides = configuration[resourceName]?.fields || {};
 
   for (const [key, prop] of Object.entries(properties) as [string, any]) {
-    const type = mapOpenApiType(prop);
+    // Resolve oneOf/anyOf by merging all branch properties
+    let resolvedProp = prop;
+    if (prop.oneOf || prop.anyOf) {
+      const branches = prop.oneOf || prop.anyOf;
+      const merged = mergeProperties({ allOf: branches });
+      resolvedProp = { ...prop, type: 'object', properties: merged.properties, required: merged.required };
+    }
+
+    const type = mapOpenApiType(resolvedProp);
     const override = overrides[key];
 
     // Explicitly skip 'id' as it's the primary key and handled elsewhere
@@ -57,12 +84,12 @@ function parseSchemaFields(
     fields[key] = {
       type,
       label:
-        prop.title ||
+        resolvedProp.title ||
         key.charAt(0).toUpperCase() + key.slice(1).replace(/_/g, " "),
       required: required.includes(key),
-      options: prop.enum,
+      options: resolvedProp.enum,
       readOnly:
-        prop.readOnly ||
+        resolvedProp.readOnly ||
         key === "created_at" ||
         key === "updated_at",
       ...override,
@@ -71,20 +98,35 @@ function parseSchemaFields(
     // STRICT RELATION DETECTION
     // A field is a relation ONLY if its schema object (or items schema) 
     // exactly matches a schema that is defined as a resource.
-    let targetSchema = prop;
-    if (type === "array" && prop.items) {
-      targetSchema = prop.items;
+    let targetSchema = resolvedProp;
+    if (type === "array" && resolvedProp.items) {
+      targetSchema = resolvedProp.items;
     }
 
     // Check if this schema object is registered as a resource
     const relation = schemaToResourceMap.get(targetSchema);
     if (relation) {
       fields[key].relation = relation;
+
+      // Propagate enumOption from target resource config, or derive from target schema
+      const explicitEnumOption = configuration[relation]?.enumOption;
+      if (explicitEnumOption) {
+        fields[key].enumOption = explicitEnumOption;
+      } else {
+        const targetProps = targetSchema.properties || {};
+        const valueField = Object.entries(targetProps).find(
+          ([name, p]: [string, any]) => name !== 'id' && p.type === 'string'
+        )?.[0];
+        fields[key].enumOption = {
+          key: 'id',
+          value: valueField ?? 'id',
+        };
+      }
     }
 
     // Recursively parse nested objects (only if not a relation)
-    if (fields[key].type === "object" && prop.properties && !relation) {
-      fields[key].schema = parseSchemaFields(prop, resourceName, schemaToResourceMap, configuration);
+    if (fields[key].type === "object" && resolvedProp.properties && !relation) {
+      fields[key].schema = parseSchemaFields(resolvedProp, resourceName, schemaToResourceMap, configuration);
     }
   }
 
@@ -172,6 +214,16 @@ export async function loadConfigFromOpenApi(baseUrl: string, configuration: Reco
     });
   }
 
+  // Collect standalone enum schemas (e.g. FetchRequestStatus, AccountType, etc.)
+  const enums: Record<string, string[]> = {};
+  if (api.components?.schemas) {
+    for (const [name, schema] of Object.entries(api.components.schemas) as [string, any]) {
+      if (schema.enum) {
+        enums[name] = schema.enum;
+      }
+    }
+  }
+
   // @ts-ignore
   const serverBaseUrl = import.meta.env.VITE_API_BASE_URL || (api.servers?.[0]?.url ?? "")
   // @ts-ignore
@@ -180,6 +232,7 @@ export async function loadConfigFromOpenApi(baseUrl: string, configuration: Reco
     baseUrl: serverBaseUrl,
     authBaseUrl: authBaseUrl,
     resources,
+    enums,
     profile: profileConfiguration,
   };
 }

react-openapi/utils/options.ts

@@ -0,0 +1,33 @@
+import { ResourceField, SelectOption } from "../types/config";
+
+export function resolveTemplate(template: string, item: any): string {
+  if (/\{(\w+)\}/.test(template)) {
+    return template.replace(/\{(\w+)\}/g, (_, field: string) => String(item[field] ?? ''));
+  }
+  return String(item[template] ?? '');
+}
+
+export function getFieldOptions(field: ResourceField, relationData?: any[]): SelectOption[] {
+  if (field.type === 'enum') {
+    return (field.options ?? []).map(opt => ({
+      key: opt,
+      value: field.enumLabels?.[opt] ?? opt,
+    }));
+  }
+
+  if (field.relation) {
+    const data = relationData ?? [];
+    const enumOption = field.enumOption ?? { key: 'id', value: 'name' };
+
+    return data.map(item => ({
+      key: String(item[enumOption.key] ?? ''),
+      value: resolveTemplate(enumOption.value, item),
+    }));
+  }
+
+  return [];
+}
+
+export function toGridValueOptions(options: SelectOption[]): { value: string; label: string }[] {
+  return options.map(opt => ({ value: opt.key, label: opt.value }));
+}