Add a function to retrieve the userId according to the configuration.

[plabadie]

See master ticket GH-1092

• Add a function to retrieve the userId according to the configuration.

For this to work, we need to :

• Create the new configuration field and assign a default value.
• Loading the user details must become part of the authentication process.
• Components must not load the user details anymore. (because loading user details is now part of the authentication process)
• The user details must be stored in the LocalStorage alongside the userToken.

[plabadie]

PR #2524

[plabadie]

Test info

Apart from the foundation work mentioned in the ticket description, I implemented the userId change in one facade function: the update password.

By default, we intend to use the userId as a default and allow overrides to fall back to using emails.

HOWEVER

Since 1905 isn't released yet, we are going to keep the email as default for now and enable the use of customer Id with the config override,

Right now, by default, you should see the email in the call to the update password endpoint.

http://backendserver/rest/v2/electronics-spa/users/email@domain.com/password?lang=en&curr=USD

Then, you can apply the configuration override with the backend.occ.userIdentifier property and setting it to customerId. The storefront is expected to switch to using customerIds in the url

StorefrontModule.withConfig({
      backend: {
        occ: {
          userIdentifier: 'uid',
        },
      },
    })

With the config override, updating the password will be done with an url that looks like:

http://backendserver/rest/v2/electronics-spa/users/e57924e5-cafe-4b58-997d-9d684367cab8/password?lang=en&curr=USD

[plabadie]

Doc input here: https://github.com/SAP/cloud-commerce-spartacus-storefront/pull/2548/files

[plabadie]

Won't fix, the solution evolved. See GH-1092.