package grpc

import (
	"google.golang.org/grpc"

	cgp "git.loafle.net/commons_go/grpc_pool"
	"git.loafle.net/commons_go/logging"
	ooas "git.loafle.net/overflow/overflow_api_server/golang"
	"git.loafle.net/overflow/overflow_server_app/config"
)

var grpcPool cgp.Pool

func ExternalInit() {
	ph := &grpcPoolHandlers{}
	ph.MaxCapacity = config.Config.GRPC.Pool.MaxCapacity
	ph.MaxIdle = config.Config.GRPC.Pool.MaxIdle
	ph.IdleTimeout = config.Config.GRPC.Pool.IdleTimeout
	ph.Wait = config.Config.GRPC.Pool.Wait

	grpcPool = cgp.New(ph)

	if err := grpcPool.Start(); nil != err {
		logging.Logger().Panicf("App: %v", err)
		return
	}
}

func ExternalDestroy() {
	if nil != grpcPool {
		grpcPool.Stop()
	}
}

type grpcPoolHandlers struct {
	cgp.PoolHandlers
}

func (h *grpcPoolHandlers) Dial() (*grpc.ClientConn, interface{}, error) {
	var err error
	conn, err := grpc.Dial(config.Config.GRPC.Addr, grpc.WithInsecure())
	if nil != err {
		return nil, nil, err
	}
	c := ooas.NewOverflowApiServerClient(conn)

	return conn, c, nil
}