new react-openapi

react-openapi/src/components/fields/renderers/DiscriminatorField.tsx

@@ -0,0 +1,66 @@
+import React, { useCallback } from "react";
+import { Box, FormControl, InputLabel, Select, MenuItem, Typography } from "@mui/material";
+import type { FieldConfig } from "../../../types";
+import { FormFieldRenderer } from "../FormFieldRenderer";
+
+interface Props {
+  field: FieldConfig;
+  value: any;
+  onChange: (value: any) => void;
+  error?: string;
+}
+
+export function DiscriminatorField({ field, value, onChange, error }: Props) {
+  const options = field.oneOfOptions ?? [];
+  const discProp = field.discriminatorProperty ?? "type";
+  const currentType = value?.[discProp] ?? "";
+
+  const handleTypeChange = useCallback((e: any) => {
+    const newType = e.target.value;
+    const option = options.find((o) => o.value === newType);
+    const newValue: Record<string, any> = { [discProp]: newType };
+    if (option) {
+      for (const f of option.fields) {
+        newValue[f.name] = f.enumValues?.[0] ?? f.type === "number" ? 0 : f.type === "integer" ? 0 : "";
+      }
+    }
+    onChange(newValue);
+  }, [discProp, onChange, options]);
+
+  const handleFieldChange = useCallback((fieldName: string, fieldValue: any) => {
+    onChange({ ...(value ?? {}), [fieldName]: fieldValue });
+  }, [onChange, value]);
+
+  const activeFields = options.find((o) => o.value === currentType)?.fields ?? [];
+
+  return (
+    <Box>
+      <FormControl fullWidth size="small" sx={{ mb: 2 }}>
+        <InputLabel>{field.label}</InputLabel>
+        <Select
+          value={currentType}
+          label={field.label}
+          onChange={handleTypeChange}
+          error={!!error}
+        >
+          <MenuItem value="" disabled>Select type</MenuItem>
+          {options.map((opt) => (
+            <MenuItem key={opt.value} value={opt.value}>{opt.label}</MenuItem>
+          ))}
+        </Select>
+      </FormControl>
+      {currentType && activeFields.length > 0 && (
+        <Box sx={{ pl: 2, borderLeft: "2px solid", borderColor: "divider" }}>
+          {activeFields.map((f) => (
+            <FormFieldRenderer
+              key={f.name}
+              field={f}
+              value={value?.[f.name]}
+              onChange={(v) => handleFieldChange(f.name, v)}
+            />
+          ))}
+        </Box>
+      )}
+    </Box>
+  );
+}