How to get currently logged in customer details from a Shopify store using the API

[w1am]

Is there a way to get the logged in customer from any store? 

[Mr_RaviRaj]

@w1am 

Yes, if you have Generated the token while installing the Custom app.
then you can get all the details of any store.

Here is a link,
https://shopify.dev/api/admin-rest/2022-04/resources/customer#top

[w1am]

What I'm trying to do is use the id field of the customer who has logged into my Shopify store to fetch data from my server. Any idea how?

[Liquidator3358]

Ideally, you would use a customerAccessToken and replace the ID with that.  Customer mutations allow for either ID or customerAccessToken.  Here is an example query:

const queryCust = `{
customer(customerAccessToken: "${token}"){
id
firstName
lastName
defaultAddress{
address1
}
}
}
`

[w1am]

Thanks for replying. Where do I get the token?

[Liquidator3358]

You need to generate it at user login.  It'll look something like this:

    const query = `
      mutation customerAccessTokenCreate($input: CustomerAccessTokenCreateInput!) {
        customerAccessTokenCreate(input: $input) {
        customerAccessToken {
            accessToken,
            expiresAt
      }
      customerUserErrors { 
              field
              message
              code 
          }

      }
    }
    `
    const variables = {
        "input": {
            "email": email,
            "password": password,
        }
      }