# All files / src/profiles/services service.ts

86.67% Statements 26/30
57.14% Branches 4/7
81.82% Functions 9/11
86.67% Lines 26/30

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    import 'cross-fetch/polyfill'
    import { containsValidProofStatement, containsValidAddressProofStatement } from './serviceUtils'
    import { fetchPrivate } from '../../fetchUtil'

    /**
     * @ignore
     */
    export class Service {
      static validateProof(proof: any,
                           ownerAddress: string,
                           name: string = null) {
        let proofUrl: string
        return Promise.resolve()
          .then(() => {
            proofUrl = this.getProofUrl(proof)
            return fetchPrivate(proofUrl)
          })
          .then((res) => {
            if (res.status !== 200) {
              throw new Error(`Proof url ${proofUrl} returned unexpected http status ${res.status}.
                  Unable to validate proof.`)
            }
            return res.text()
          })
          .then((text) => {
            // Validate identity in provided proof body/tags if required
            if (this.shouldValidateIdentityInBody()
                && proof.identifier !== this.getProofIdentity(text)) {
              return proof
            }
            const proofText = this.getProofStatement(text)
            proof.valid = containsValidProofStatement(proofText, name)
              || containsValidAddressProofStatement(proofText, ownerAddress)
            return proof
          })
          .catch((error) => {
            console.error(error)
            proof.valid = false
            return proof
          })
      }

      static getBaseUrls(): string[] {
        return []
      }

      static getProofIdentity(searchText: string) {
        return searchText
      }

      static getProofStatement(searchText: string) {
        return searchText
      }

      static shouldValidateIdentityInBody() {
        return false
      }

      static prefixScheme(proofUrl: string) {
        if (!proofUrl.startsWith('https://') && !proofUrl.startsWith('http://')) {
          return `https://${proofUrl}`
        } else if (proofUrl.startsWith('http://')) {
          return proofUrl.replace('http://', 'https://')
        } else {
          return proofUrl
        }
      }

      static getProofUrl(proof: any): string {
        const baseUrls = this.getBaseUrls()

        let proofUrl = proof.proof_url.toLowerCase()
        proofUrl = this.prefixScheme(proofUrl)

        for (let i = 0; i < baseUrls.length; i++) {
          const requiredPrefix = `${baseUrls[i]}${proof.identifier}`.toLowerCase()
          if (proofUrl.startsWith(requiredPrefix)) {
            return proofUrl
          }
        }
        throw new Error(`Proof url ${proof.proof_url} is not valid for service ${proof.service}`)
      }
    }