package main

import (
	"context"
	"flag"
	"os"
	"os/signal"
	"sync"
	"syscall"

	"github.com/pingcap/log"
	"github.com/tidbcloud/tiinf/monitor/titracing"
	"go.uber.org/zap"
)

const (
	serviceName = "cluster-agent"
)

func main() {
	// init config
	err := InitConfig(os.Args[1:])
	switch err {
	case nil:
	case flag.ErrHelp:
		os.Exit(0)
	default:
		panic(err)
	}
	cfg := GetConfig()

	// init logger, use pingcap/log now
	logger, props, err := log.InitLogger(&log.Config{Level: cfg.LogLevel})
	if err != nil {
		panic(err)
	}
	log.ReplaceGlobals(logger, props)
	log.Info("Starting cluster-agent server...")
	defer log.Sync() // nolint: errcheck

	// Create context that listens for the interrupt signal from the OS.
	ctx, stop := signal.NotifyContext(context.Background(), syscall.SIGINT, syscall.SIGTERM)
	defer stop()

	// init tracing even if the tracing is currently not usable in regional, because we need to init Propagator
	// to extra some info from HTTP header.
	if _, err = titracing.InitJaeger(serviceName); err != nil {
		log.Error("init tiinf jaeger provider failed", zap.Error(err))
	}
	var wg sync.WaitGroup

	wg.Add(1)
	go func() {
		defer wg.Done()
		setupAndRunGRPCServer(ctx, cfg)
	}()

	wg.Add(1)
	go func() {
		defer wg.Done()
		setupAndRunGRPCGateway(ctx, cfg.Addr, cfg.InternalGRPCAddr)
	}()

	wg.Wait()
	log.Info("cluster-agent server stopped")
}