@tunnel-cast/nestjs/parameter-decorators/cast-parameter-decorator.factory.js

## About This is a Tunnel-Cast - NestJS integration package, wrap the `cast` application into the `NestJS` building blocks.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.CastParameterDecorator = exports.CastParameterDecoratorFactory = void 0;
const common_1 = require("@nestjs/common");
const constants_1 = require("../constants");
const extract_value_1 = require("../utils/extract-value");
const pipes_1 = require("../pipes");
function CastParameterDecoratorFactory(extractionPath, payloadType) {
    return (model) => {
        const decorator = exports.CastParameterDecorator(extractionPath, payloadType);
        if (model != undefined) {
            return decorator(pipes_1.CastPipeFactory(model));
        }
        else {
            return decorator(pipes_1.CastPipe);
        }
    };
}
exports.CastParameterDecoratorFactory = CastParameterDecoratorFactory;
exports.CastParameterDecorator = (extractionPath, payloadType) => {
    const enhancers = payloadType ? [assignHttpDataTypeMetadataEnhancer(payloadType)] : [];
    const decorator = common_1.createParamDecorator((data, ctx) => {
        const target = {
            req: ctx.switchToHttp().getRequest(),
            res: ctx.switchToHttp().getResponse()
        };
        const extractedValue = extract_value_1.extractValue(target, extractionPath);
        return { extractedValue, path: extractionPath };
    }, enhancers);
    return decorator;
};
function assignHttpDataTypeMetadataEnhancer(payloadType) {
    return function (target, key, index) {
        if (Reflect.hasMetadata(constants_1.CAST_HTTP_PAYLOAD_TYPE_LIST, target, key)) {
            const payloadTypeList = Reflect.getMetadata(constants_1.CAST_HTTP_PAYLOAD_TYPE_LIST, target, key);
            payloadTypeList.push({ payloadType, argumentIndex: index });
        }
        else {
            Reflect.defineMetadata(constants_1.CAST_HTTP_PAYLOAD_TYPE_LIST, [{ payloadType, argumentIndex: index }], target, key);
        }
    };
}
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