[client] Allow Automatic Persisted Queries

[samuelAndalon]

Is your feature request related to a problem? Please describe.
graphql-kotlin-server recently added Automatic Persisted Queries to allow clients to send a hash representation of a graphQL operation instead of the actual query string.

Describe the solution you'd like
Allow graphql-kotlin-client to implement APQ requests

[gumimin]

Hi @samuelAndalon
I am thinking of implementing this Issue.
Please let me know your implementation plan if you don't mind.

1. Is the scope of this Issue to add an interface to graphql-kotlin-client? (is it unnecessary to add implementations to graphql-kotlin-ktor-client and graphql-kotlin-spring-client?)

2. Is it correct to the modifications are as follows.

Add AutomaticallyPersistedQueriesSettings to com.expediagroup.graphql.client.types

interface AutomaticPersistedQueriesSettings<T : Any> {
    val enabled: Boolean
    val httpMethodForHashedQueries: T
    val httpMethodForDocumentQueries: T

Add the automaticPersistedQueriesSettings property to com.expediagroup.graphql.client.GraphQLClient

interface GraphQLClient<RequestCustomizer> {
    val automaticPersistedQueriesSettings: AutomaticPersistedQueriesSettings<*>
    ...
}

Add the extensions property to com.expediagroup.graphql.client.types.GraphQLClientRequest

interface GraphQLClientRequest<T : Any> {
    ...
    val extensions: Any?
        get() = null
    ...
}

[samuelAndalon]

Hello, the plan is to enable this from a flag, i think thats the only thing we can let clients to configure, regarding the hash, it has to be sha256 and pretty much follow this pattern

https://opensource.expediagroup.com/graphql-kotlin/docs/server/automatic-persisted-queries/

[gumimin]

@samuelAndalon
Thank you for your reply.
Is the implementation correct as below? (If the implementation seems correct, I will add a test and make a PR.)
gumimin@b7d9714

[gumimin]

Hi @samuelAndalon
I made a pull request, could you review it?
#1802

[dariuszkuc]

Resolved in #1802