Remove default value in generateSchemaExample (#3007)

.changeset/smooth-rivers-burn.md

@@ -0,0 +1,5 @@
+---
+'@gitbook/react-openapi': patch
+---
+
+Remove default value in generateSchemaExample

packages/react-openapi/src/generateSchemaExample.ts

@@ -1,5 +1,4 @@
 import type { OpenAPIV3 } from '@gitbook/openapi-parser';
-import { getExampleFromSchema } from '@scalar/oas-utils/spec-getters';
 
 type JSONValue = string | number | boolean | null | JSONValue[] | { [key: string]: JSONValue };
 
@@ -20,19 +19,6 @@ export function generateSchemaExample(
         schema,
         {
             emptyString: 'text',
-            variables: {
-                'date-time': new Date().toISOString(),
-                date: new Date().toISOString().split('T')[0],
-                email: 'name@gmail.com',
-                hostname: 'example.com',
-                ipv4: '0.0.0.0',
-                ipv6: '2001:0db8:85a3:0000:0000:8a2e:0370:7334',
-                uri: 'https://example.com',
-                uuid: '123e4567-e89b-12d3-a456-426614174000',
-                binary: 'binary',
-                byte: 'Ynl0ZXM=',
-                password: 'password',
-            },
             ...options,
         },
         3 // Max depth for circular references
@@ -66,3 +52,393 @@ export function generateMediaTypeExample(
 
     return undefined;
 }
+
+/** Hard limit for rendering circular references */
+const MAX_LEVELS_DEEP = 5;
+
+const genericExampleValues: Record<string, string> = {
+    'date-time': new Date().toISOString(),
+    date: new Date().toISOString().split('T')[0] ?? '1970-01-01',
+    email: 'name@gmail.com',
+    hostname: 'example.com',
+    ipv4: '0.0.0.0',
+    ipv6: '2001:0db8:85a3:0000:0000:8a2e:0370:7334',
+    uri: 'https://example.com',
+    uuid: '123e4567-e89b-12d3-a456-426614174000',
+    binary: 'binary',
+    byte: 'Ynl0ZXM=',
+    password: 'password',
+    'idn-email': 'jane.doe@example.com',
+    'idn-hostname': 'example.com',
+    'iri-reference': '/entitiy/1',
+    // https://tools.ietf.org/html/rfc3987
+    iri: 'https://example.com/entity/123',
+    'json-pointer': '/nested/objects',
+    regex: '/[a-z]/',
+    // https://tools.ietf.org/html/draft-handrews-relative-json-pointer-01
+    'relative-json-pointer': '1/nested/objects',
+    // full-time in https://tools.ietf.org/html/rfc3339#section-5.6
+    time: new Date().toISOString().split('T')[1]?.split('.')[0] ?? '00:00:00Z',
+    // either a URI or relative-reference https://tools.ietf.org/html/rfc3986#section-4.1
+    'uri-reference': '../folder',
+    'uri-template': 'https://example.com/{id}',
+    'object-id': '6592008029c8c3e4dc76256c',
+};
+
+/**
+ * We can use the `format` to generate some random values.
+ */
+function guessFromFormat(schema: Record<string, any>, fallback = '') {
+    return genericExampleValues[schema.format] ?? fallback;
+}
+
+/** Map of all the results */
+const resultCache = new WeakMap<Record<string, any>, any>();
+
+/** Store result in the cache, and return the result */
+function cache(schema: Record<string, any>, result: unknown) {
+    // Avoid unnecessary WeakMap operations for primitive values
+    if (typeof result !== 'object' || result === null) {
+        return result;
+    }
+
+    resultCache.set(schema, result);
+
+    return result;
+}
+
+/**
+ * This function takes an OpenAPI schema and generates an example from it
+ * Forked from : https://github.com/scalar/scalar/blob/main/packages/oas-utils/src/spec-getters/getExampleFromSchema.ts
+ */
+const getExampleFromSchema = (
+    schema: Record<string, any>,
+    options?: {
+        /**
+         * The fallback string for empty string values.
+         * @default ''
+         */
+        emptyString?: string;
+        /**
+         * Whether to use the XML tag names as keys
+         * @default false
+         */
+        xml?: boolean;
+        /**
+         * Whether to show read-only/write-only properties. Otherwise all properties are shown.
+         * @default undefined
+         */
+        mode?: 'read' | 'write';
+        /**
+         * Dynamic values to add to the example.
+         */
+        variables?: Record<string, any>;
+        /**
+         * Whether to omit empty and optional properties.
+         * @default false
+         */
+        omitEmptyAndOptionalProperties?: boolean;
+    },
+    level = 0,
+    parentSchema?: Record<string, any>,
+    name?: string
+): any => {
+    // Check if the result is already cached
+    if (resultCache.has(schema)) {
+        return resultCache.get(schema);
+    }
+
+    // Check whether it’s a circular reference
+    if (level === MAX_LEVELS_DEEP + 1) {
+        try {
+            // Fails if it contains a circular reference
+            JSON.stringify(schema);
+        } catch {
+            return '[Circular Reference]';
+        }
+    }
+
+    // Sometimes, we just want the structure and no values.
+    // But if `emptyString` is  set, we do want to see some values.
+    const makeUpRandomData = !!options?.emptyString;
+
+    // Check if the property is read-only/write-only
+    if (
+        (options?.mode === 'write' && schema.readOnly) ||
+        (options?.mode === 'read' && schema.writeOnly)
+    ) {
+        return undefined;
+    }
+
+    // Use given variables as values
+    if (schema['x-variable']) {
+        const value = options?.variables?.[schema['x-variable']];
+
+        // Return the value if it’s defined
+        if (value !== undefined) {
+            // Type-casting
+            if (schema.type === 'number' || schema.type === 'integer') {
+                return Number.parseInt(value, 10);
+            }
+
+            return cache(schema, value);
+        }
+    }
+
+    // Use the first example, if there’s an array
+    if (Array.isArray(schema.examples) && schema.examples.length > 0) {
+        return cache(schema, schema.examples[0]);
+    }
+
+    // Use an example, if there’s one
+    if (schema.example !== undefined) {
+        return cache(schema, schema.example);
+    }
+
+    // enum: [ 'available', 'pending', 'sold' ]
+    if (Array.isArray(schema.enum) && schema.enum.length > 0) {
+        return cache(schema, schema.enum[0]);
+    }
+
+    // Check if the property is required
+    const isObjectOrArray =
+        schema.type === 'object' ||
+        schema.type === 'array' ||
+        !!schema.allOf?.at?.(0) ||
+        !!schema.anyOf?.at?.(0) ||
+        !!schema.oneOf?.at?.(0);
+    if (!isObjectOrArray && options?.omitEmptyAndOptionalProperties === true) {
+        const isRequired =
+            schema.required === true ||
+            parentSchema?.required === true ||
+            parentSchema?.required?.includes(name ?? schema.name);
+
+        if (!isRequired) {
+            return undefined;
+        }
+    }
+
+    // Object
+    if (schema.type === 'object' || schema.properties !== undefined) {
+        const response: Record<string, any> = {};
+
+        // Regular properties
+        if (schema.properties !== undefined) {
+            for (const propertyName in schema.properties) {
+                if (Object.prototype.hasOwnProperty.call(schema.properties, propertyName)) {
+                    const property = schema.properties[propertyName];
+                    const propertyXmlTagName = options?.xml ? property.xml?.name : undefined;
+
+                    response[propertyXmlTagName ?? propertyName] = getExampleFromSchema(
+                        property,
+                        options,
+                        level + 1,
+                        schema,
+                        propertyName
+                    );
+
+                    if (typeof response[propertyXmlTagName ?? propertyName] === 'undefined') {
+                        delete response[propertyXmlTagName ?? propertyName];
+                    }
+                }
+            }
+        }
+
+        // Pattern properties (regex)
+        if (schema.patternProperties !== undefined) {
+            for (const pattern in schema.patternProperties) {
+                if (Object.prototype.hasOwnProperty.call(schema.patternProperties, pattern)) {
+                    const property = schema.patternProperties[pattern];
+
+                    // Use the regex pattern as an example key
+                    const exampleKey = pattern;
+
+                    response[exampleKey] = getExampleFromSchema(
+                        property,
+                        options,
+                        level + 1,
+                        schema,
+                        exampleKey
+                    );
+                }
+            }
+        }
+
+        // Additional properties
+        if (schema.additionalProperties !== undefined) {
+            const anyTypeIsValid =
+                // true
+                schema.additionalProperties === true ||
+                // or an empty object {}
+                (typeof schema.additionalProperties === 'object' &&
+                    !Object.keys(schema.additionalProperties).length);
+
+            if (anyTypeIsValid) {
+                response.ANY_ADDITIONAL_PROPERTY = 'anything';
+            } else if (schema.additionalProperties !== false) {
+                response.ANY_ADDITIONAL_PROPERTY = getExampleFromSchema(
+                    schema.additionalProperties,
+                    options,
+                    level + 1
+                );
+            }
+        }
+
+        if (schema.anyOf !== undefined) {
+            Object.assign(response, getExampleFromSchema(schema.anyOf[0], options, level + 1));
+        } else if (schema.oneOf !== undefined) {
+            Object.assign(response, getExampleFromSchema(schema.oneOf[0], options, level + 1));
+        } else if (schema.allOf !== undefined) {
+            Object.assign(
+                response,
+                ...schema.allOf
+                    .map((item: Record<string, any>) =>
+                        getExampleFromSchema(item, options, level + 1, schema)
+                    )
+                    .filter((item: any) => item !== undefined)
+            );
+        }
+
+        return cache(schema, response);
+    }
+
+    // Array
+    if (schema.type === 'array' || schema.items !== undefined) {
+        const itemsXmlTagName = schema?.items?.xml?.name;
+        const wrapItems = !!(options?.xml && schema.xml?.wrapped && itemsXmlTagName);
+
+        if (schema.example !== undefined) {
+            return cache(
+                schema,
+                wrapItems ? { [itemsXmlTagName]: schema.example } : schema.example
+            );
+        }
+
+        // Check whether the array has a anyOf, oneOf, or allOf rule
+        if (schema.items) {
+            // First handle allOf separately since it needs special handling
+            if (schema.items.allOf) {
+                // If the first item is an object type, merge all schemas
+                if (schema.items.allOf[0].type === 'object') {
+                    const mergedExample = getExampleFromSchema(
+                        { type: 'object', allOf: schema.items.allOf },
+                        options,
+                        level + 1,
+                        schema
+                    );
+
+                    return cache(
+                        schema,
+                        wrapItems ? [{ [itemsXmlTagName]: mergedExample }] : [mergedExample]
+                    );
+                }
+                // For non-objects (like strings), collect all examples
+                const examples = schema.items.allOf
+                    .map((item: Record<string, any>) =>
+                        getExampleFromSchema(item, options, level + 1, schema)
+                    )
+                    .filter((item: any) => item !== undefined);
+
+                return cache(
+                    schema,
+                    wrapItems
+                        ? examples.map((example: any) => ({ [itemsXmlTagName]: example }))
+                        : examples
+                );
+            }
+
+            // Handle other rules (anyOf, oneOf)
+            const rules = ['anyOf', 'oneOf'];
+            for (const rule of rules) {
+                if (!schema.items[rule]) {
+                    continue;
+                }
+
+                const schemas = schema.items[rule].slice(0, 1);
+                const exampleFromRule = schemas
+                    .map((item: Record<string, any>) =>
+                        getExampleFromSchema(item, options, level + 1, schema)
+                    )
+                    .filter((item: any) => item !== undefined);
+
+                return cache(
+                    schema,
+                    wrapItems ? [{ [itemsXmlTagName]: exampleFromRule }] : exampleFromRule
+                );
+            }
+        }
+
+        if (schema.items?.type) {
+            const exampleFromSchema = getExampleFromSchema(schema.items, options, level + 1);
+
+            return wrapItems ? [{ [itemsXmlTagName]: exampleFromSchema }] : [exampleFromSchema];
+        }
+
+        return [];
+    }
+
+    const exampleValues: Record<any, any> = {
+        string: makeUpRandomData ? guessFromFormat(schema, options?.emptyString) : '',
+        boolean: true,
+        integer: schema.min ?? 1,
+        number: schema.min ?? 1,
+        array: [],
+    };
+
+    if (schema.type !== undefined && exampleValues[schema.type] !== undefined) {
+        return cache(schema, exampleValues[schema.type]);
+    }
+
+    const discriminateSchema = schema.oneOf || schema.anyOf;
+    // Check if property has the `oneOf` | `anyOf` key
+    if (Array.isArray(discriminateSchema) && discriminateSchema.length > 0) {
+        // Get the first item from the `oneOf` | `anyOf` array
+        const firstOneOfItem = discriminateSchema[0];
+
+        // Return an example for the first item
+        return getExampleFromSchema(firstOneOfItem, options, level + 1);
+    }
+
+    // Check if schema has the `allOf` key
+    if (Array.isArray(schema.allOf)) {
+        let example: any = null;
+
+        // Loop through all `allOf` schemas
+        schema.allOf.forEach((allOfItem: Record<string, any>) => {
+            // Return an example from the schema
+            const newExample = getExampleFromSchema(allOfItem, options, level + 1);
+
+            // Merge or overwrite the example
+            example =
+                typeof newExample === 'object' && typeof example === 'object'
+                    ? {
+                          ...(example ?? {}),
+                          ...newExample,
+                      }
+                    : Array.isArray(newExample) && Array.isArray(example)
+                      ? [...(example ?? {}), ...newExample]
+                      : newExample;
+        });
+
+        return cache(schema, example);
+    }
+
+    // Check if schema is a union type
+    if (Array.isArray(schema.type)) {
+        // Return null if the type is nullable
+        if (schema.type.includes('null')) {
+            return null;
+        }
+        // Return an example for the first type in the union
+        const exampleValue = exampleValues[schema.type[0]];
+        if (exampleValue !== undefined) {
+            return cache(schema, exampleValue);
+        }
+    }
+
+    // Warn if the type is unknown …
+    // console.warn(`[getExampleFromSchema] Unknown property type "${schema.type}".`)
+
+    // … and just return null for now.
+    return null;
+};