// Command server runs Oolong in one process.
package main

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

	"tangled.org/oolong.social/oolong/internal/atplatform/domain"
	"tangled.org/oolong.social/oolong/internal/atplatform/server"
	"tangled.org/oolong.social/oolong/internal/handlers"
	"tangled.org/oolong.social/oolong/internal/logging"
	oolongapp "tangled.org/oolong.social/oolong/internal/oolong/app"
	teahandlers "tangled.org/oolong.social/oolong/internal/oolong/handlers"
	"tangled.org/oolong.social/oolong/internal/routing"

	"github.com/rs/zerolog/log"
)

type appRun struct {
	app                *domain.App
	defaultPort        string
	defaultMetricsPort string
	appRoutes          routing.AppRoutes
	staticPages        handlers.StaticPageRenderers
}

func main() {
	knownDIDsFile := flag.String("known-dids", "", "Path to file containing DIDs to backfill on startup (one per line)")
	flag.Parse()

	logging.ConfigureFromEnv(os.Stdout)

	ctx, cancel := context.WithCancel(context.Background())
	defer cancel()

	sigCh := make(chan os.Signal, 1)
	signal.Notify(sigCh, syscall.SIGINT, syscall.SIGTERM)
	go func() {
		<-sigCh
		log.Info().Msg("Signal received, shutting down")
		cancel()
	}()

	runs := []appRun{{
		app:                oolongapp.New(),
		defaultPort:        "18920",
		defaultMetricsPort: "9102",
		appRoutes:          teahandlers.Routes{},
		staticPages:        teahandlers.StaticPages(),
	}}

	if err := runApps(ctx, *knownDIDsFile, runs); err != nil {
		log.Fatal().Err(err).Msg("Server exited with error")
	}
	log.Info().Msg("Stopped")
}

func runApps(ctx context.Context, knownDIDsFile string, runs []appRun) error {
	if len(runs) != 1 {
		return fmt.Errorf("expected exactly one app, got %d", len(runs))
	}
	run := runs[0]
	log.Info().Str("app", run.app.Name).Msg("Starting app")
	return server.Run(ctx, run.app, server.Options{
		KnownDIDsPath:      knownDIDsFile,
		DefaultPort:        run.defaultPort,
		DefaultMetricsPort: run.defaultMetricsPort,
		AppRoutes:          run.appRoutes,
		StaticPages:        run.staticPages,
	})
}