squid-js/src/utils/DDOHelpers.ts

import { DDO } from "../ddo/DDO"
import { ServiceAgreementTemplateCondition, ServiceAgreementTemplateParameter } from "../ddo/ServiceAgreementTemplate"

function fillParameterWithDDO(parameter: ServiceAgreementTemplateParameter, ddo: DDO): ServiceAgreementTemplateParameter {
    const getValue = (name) => {
        switch (name) {
            case "amount":
            case "price":
                return ddo.findServiceByType("Metadata").metadata.base.price.toString()
            case "assetId":
            case "documentId":
            case "documentKeyId":
                return ddo.shortId()
        }

        return ""
    }
    const value = getValue(parameter.name.replace(/^_/, ""))

    return {...parameter, value: parameter.type.includes("int") ? Number(value) : value}
}

/**
 * Fill some static parameters that depends on the metadata.
 * @param  {ServiceAgreementTemplateCondition[]} conditions Conditions to fill.
 * @param  {DDO}                                 ddo        DDO related to this conditions.
 * @return {ServiceAgreementTemplateCondition[]}            Filled conditions.
 */
export function fillConditionsWithDDO(conditions: ServiceAgreementTemplateCondition[], ddo: DDO): ServiceAgreementTemplateCondition[] {
    return conditions
        .map((condition) => ({
            ...condition,
            parameters: condition.parameters
                .map((parameter) => ({
                    ...fillParameterWithDDO(parameter, ddo),
                })),
        }))
}