package servlet

import (
	cssw "git.loafle.net/commons/server-go/socket/web"
	crpj "git.loafle.net/commons/rpc-go/protocol/json"
	"git.loafle.net/commons/server-go"

	"github.com/valyala/fasthttp"
	ogeg "git.loafle.net/overflow/gateway/external/grpc"
	"context"
)

type RPCServlet interface {
	cssw.Servlet
} 

type RPCServlets struct {
	cssw.Servlets
}

func init()  {
	// member RSA file read
}

func (s *RPCServlets) Handshake(servletCtx server.ServletCtx, ctx *fasthttp.RequestCtx) (*fasthttp.ResponseHeader, error) {
	// member auth token extraction
	// auth token parse
	// auth token valid
	// servletCtx set member

	return nil, nil
}

func (s *RPCServlets) Handle(
	servletCtx server.ServletCtx,
	stopChan <-chan struct{},
	doneChan chan<- struct{},
	readChan <-chan []byte,
	writeChan chan<- []byte ) {
	defer func() {
		doneChan <- struct{}{}
	}()

	sc := crpj.NewServerCodec()
	grpcCTX := context.Background()

	for {
		select {
		case msg, ok := <-readChan:
			if !ok {
				return
			}
			// grpc exec method call
			src, _ := sc.NewRequest(msg)

			m := src.Method()
			p,_ := src.Params()

			r, err := ogeg.Exec(grpcCTX,m, p)

			b, err := src.NewResponse(r, err)

			writeChan <- b
		case <-stopChan:
			return
		}

	}

}