@samchon/openapi/lib/utils/internal/OpenApiOneOfValidator.mjs.map

OpenAPI definitions and converters for 'typia' and 'nestia'.

{"version":3,"file":"OpenApiOneOfValidator.mjs","sources":["../../../src/utils/internal/OpenApiOneOfValidator.ts"],"sourcesContent":["import { OpenApi } from \"../../OpenApi\";\nimport { MapUtil } from \"../MapUtil\";\nimport { OpenApiTypeChecker } from \"../OpenApiTypeChecker\";\nimport { IOpenApiValidatorContext } from \"./IOpenApiValidatorContext\";\nimport { OpenApiStationValidator } from \"./OpenApiStationValidator\";\n\nexport namespace OpenApiOneOfValidator {\n  export const validate = (\n    ctx: IOpenApiValidatorContext<OpenApi.IJsonSchema.IOneOf>,\n  ): boolean => {\n    const discriminator: IDiscriminator = getDiscriminator(ctx);\n    for (const item of discriminator.branches)\n      if (item.predicator(ctx.value))\n        return OpenApiStationValidator.validate({\n          ...ctx,\n          schema: item.schema,\n        });\n    return discriminator.branches.length === 0\n      ? discriminator.remainders\n          .map((schema) =>\n            OpenApiStationValidator.validate({\n              ...ctx,\n              schema,\n              exceptionable: false,\n            }),\n          )\n          .some((v) => v) || ctx.report(ctx)\n      : validate({\n          ...ctx,\n          schema: {\n            oneOf: discriminator.remainders,\n          },\n        });\n  };\n\n  const getDiscriminator = (\n    ctx: IOpenApiValidatorContext<OpenApi.IJsonSchema.IOneOf>,\n  ): IDiscriminator => {\n    const resolvedList: IFlatSchema[] = ctx.schema.oneOf.map((schema) =>\n      getFlattened({\n        components: ctx.components,\n        schema,\n        visited: new Set(),\n      }),\n    );\n\n    // FIND ANY TYPE\n    const anything: IFlatSchema | undefined = resolvedList.find((resolved) =>\n      OpenApiTypeChecker.isUnknown(resolved.escaped),\n    );\n    if (anything)\n      return {\n        branches: [],\n        remainders: [anything.schema],\n      };\n\n    // CHECK NULLABLES\n    const nullables: IFlatSchema<OpenApi.IJsonSchema.INull>[] =\n      resolvedList.filter(\n        (resolved): resolved is IFlatSchema<OpenApi.IJsonSchema.INull> =>\n          OpenApiTypeChecker.isNull(resolved.schema),\n      );\n    const significant: IFlatSchema<OpenApi.IJsonSchema>[] = resolvedList.filter(\n      (resolved) => false === OpenApiTypeChecker.isNull(resolved.escaped),\n    );\n    if (significant.length === 1)\n      return {\n        branches: [\n          {\n            schema: significant[0].schema,\n            predicator: (value) => value !== null,\n          },\n        ],\n        remainders: nullables.map((nullable) => nullable.schema),\n      };\n\n    // DISCRIMINATIONS\n    const tuples = significant.filter((flat) =>\n      OpenApiTypeChecker.isTuple(flat.escaped),\n    );\n    const arrays = significant.filter(\n      (flat): flat is IFlatSchema<OpenApi.IJsonSchema.IArray> =>\n        OpenApiTypeChecker.isArray(flat.escaped),\n    );\n    const branches: IDiscriminatorBranch[] = [\n      ...(tuples.length === 0 && arrays.length !== 0\n        ? discriminateArrays(\n            ctx,\n            significant.filter(\n              (flat): flat is IFlatSchema<OpenApi.IJsonSchema.IArray> =>\n                OpenApiTypeChecker.isArray(flat.schema),\n            ),\n          )\n        : []),\n      ...discriminateObjects(\n        ctx,\n        significant.filter(\n          (flat): flat is IFlatSchema<OpenApi.IJsonSchema.IObject> =>\n            OpenApiTypeChecker.isObject(flat.escaped),\n        ),\n        tuples.length + arrays.length === 0,\n      ),\n    ];\n    return {\n      branches,\n      remainders: ctx.schema.oneOf.filter(\n        (x) => branches.some((y) => y.schema === x) === false,\n      ),\n    };\n  };\n\n  const discriminateArrays = (\n    ctx: IOpenApiValidatorContext<OpenApi.IJsonSchema.IOneOf>,\n    arraySchemas: IFlatSchema<OpenApi.IJsonSchema.IArray>[],\n  ): IDiscriminatorBranch[] => {\n    if (arraySchemas.length === 1)\n      return [\n        {\n          schema: arraySchemas[0].schema,\n          predicator: (value) => Array.isArray(value),\n        },\n      ];\n    return arraySchemas\n      .filter((flat, i, array) =>\n        array.every(\n          (item, j) =>\n            i === j ||\n            !OpenApiTypeChecker.covers({\n              components: ctx.components,\n              x: item.escaped.items,\n              y: flat.escaped.items,\n            }),\n        ),\n      )\n      .map(\n        (flat) =>\n          ({\n            schema: flat.schema,\n            predicator: (value) =>\n              Array.isArray(value) &&\n              (value.length === 0 ||\n                OpenApiStationValidator.validate({\n                  ...ctx,\n                  schema: (flat.escaped as OpenApi.IJsonSchema.IArray).items,\n                  value: value[0]!,\n                  path: `${ctx.path}[0]`,\n                  exceptionable: false,\n                })),\n          }) satisfies IDiscriminatorBranch,\n      );\n  };\n\n  const discriminateObjects = (\n    ctx: IOpenApiValidatorContext<OpenApi.IJsonSchema.IOneOf>,\n    objectSchemas: IFlatSchema<OpenApi.IJsonSchema.IObject>[],\n    noArray: boolean,\n  ): IDiscriminatorBranch[] => {\n    if (objectSchemas.length === 1)\n      return [\n        {\n          schema: objectSchemas[0].schema,\n          predicator: noArray\n            ? (value) => typeof value === \"object\" && value !== null\n            : (value) =>\n                typeof value === \"object\" &&\n                value !== null &&\n                Array.isArray(value) === false,\n        },\n      ];\n\n    // KEEP ONLY REQUIRED PROPERTIES\n    objectSchemas = objectSchemas\n      .filter(\n        (flat) =>\n          flat.escaped.properties !== undefined &&\n          flat.escaped.required !== undefined,\n      )\n      .map(\n        (flat) =>\n          ({\n            ...flat,\n            escaped: {\n              ...flat.escaped,\n              properties: Object.fromEntries(\n                Object.entries(flat.escaped.properties ?? {}).map(\n                  ([key, value]) => [\n                    key,\n                    getFlattened({\n                      components: ctx.components,\n                      schema: value,\n                      visited: new Set(),\n                    }).escaped,\n                  ],\n                ),\n              ),\n            },\n          }) satisfies IFlatSchema<OpenApi.IJsonSchema.IObject>,\n      );\n\n    // PROPERTY MATRIX\n    const matrix: Map<string, Array<OpenApi.IJsonSchema | null>> = new Map();\n    objectSchemas.forEach((obj, i) => {\n      for (const [key, value] of Object.entries(obj.escaped.properties ?? {})) {\n        if (!!obj.escaped.required?.includes(key) === false) continue;\n        MapUtil.take(matrix)(key)(() =>\n          new Array(objectSchemas.length).fill(null),\n        )[i] = value;\n      }\n    });\n\n    // THE BRANCHES\n    return objectSchemas\n      .map((obj, i) => {\n        const candidates: string[] = [];\n        for (const [key, value] of Object.entries(\n          obj.escaped.properties ?? {},\n        )) {\n          if (!!obj.escaped.required?.includes(key) === false) continue;\n\n          const neighbors: OpenApi.IJsonSchema[] = matrix\n            .get(key)!\n            .filter((_oppo, j) => i !== j)\n            .filter((oppo) => oppo !== null);\n          const unique: boolean = OpenApiTypeChecker.isConstant(value)\n            ? neighbors.every(\n                (oppo) =>\n                  OpenApiTypeChecker.isConstant(oppo) &&\n                  value.const !== oppo.const,\n              )\n            : neighbors.length === 0;\n          if (unique) candidates.push(key);\n        }\n        if (candidates.length === 0) return null;\n        const top: string =\n          candidates.find((key) =>\n            OpenApiTypeChecker.isConstant(obj.escaped.properties![key]),\n          ) ?? candidates[0];\n        const target: OpenApi.IJsonSchema = obj.escaped.properties![top];\n        return {\n          schema: obj.schema,\n          predicator: OpenApiTypeChecker.isConstant(target)\n            ? (value) =>\n                typeof value === \"object\" &&\n                value !== null &&\n                (value as any)[top] === target.const\n            : (value) =>\n                typeof value === \"object\" &&\n                value !== null &&\n                (value as any)[top] !== undefined,\n        } satisfies IDiscriminatorBranch;\n      })\n      .filter((b) => b !== null);\n  };\n}\n\nconst getFlattened = (props: {\n  components: OpenApi.IComponents;\n  schema: OpenApi.IJsonSchema;\n  visited: Set<string>;\n}): IFlatSchema => {\n  if (OpenApiTypeChecker.isReference(props.schema)) {\n    const key: string = props.schema.$ref.split(\"/\").pop() ?? \"\";\n    if (props.visited.has(key))\n      return {\n        schema: props.schema,\n        escaped: {},\n      };\n    props.visited.add(key);\n    return {\n      ...getFlattened({\n        components: props.components,\n        schema: props.components.schemas?.[key] ?? {},\n        visited: props.visited,\n      }),\n      schema: props.schema,\n    };\n  }\n  return {\n    schema: props.schema,\n    escaped: props.schema,\n  };\n};\n\ninterface IDiscriminator {\n  branches: IDiscriminatorBranch[];\n  remainders: OpenApi.IJsonSchema[];\n}\n\ninterface IDiscriminatorBranch {\n  schema: OpenApi.IJsonSchema;\n  predicator: (value: unknown) => boolean;\n}\n\ninterface IFlatSchema<\n  Schema extends OpenApi.IJsonSchema = OpenApi.IJsonSchema,\n> {\n  schema: OpenApi.IJsonSchema;\n  escaped: 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