package main

import (
	"net/http"
	"tercul/graph"

	"github.com/99designs/gqlgen/graphql/handler"
	"github.com/99designs/gqlgen/graphql/handler/extension"
	"github.com/99designs/gqlgen/graphql/handler/lru"
	"github.com/99designs/gqlgen/graphql/handler/transport"
	"github.com/99designs/gqlgen/graphql/playground"
	"github.com/vektah/gqlparser/v2/ast"
)

const defaultPort = "8080"

// SetupGraphQLServer configures and returns a GraphQL server with the provided resolver
func SetupGraphQLServer(resolver *graph.Resolver) *handler.Server {
	srv := handler.New(graph.NewExecutableSchema(graph.Config{Resolvers: resolver}))

	srv.AddTransport(transport.Options{})
	srv.AddTransport(transport.GET{})
	srv.AddTransport(transport.POST{})

	srv.SetQueryCache(lru.New[*ast.QueryDocument](1000))

	srv.Use(extension.Introspection{})
	srv.Use(extension.AutomaticPersistedQuery{
		Cache: lru.New[string](100),
	})

	return srv
}

// SetupHTTPHandlers configures HTTP routes for the GraphQL playground and API
func SetupHTTPHandlers(srv *handler.Server, queryPath string) {
	http.Handle("/", playground.Handler("GraphQL playground", queryPath))
	http.Handle(queryPath, srv)
}