package app

import (
	"context"
	"errors"
	"go.uber.org/zap"
	"penahub.gitlab.yandexcloud.net/backend/quiz/shutterstock/internal/client"
	"penahub.gitlab.yandexcloud.net/backend/quiz/shutterstock/internal/controller"
	"penahub.gitlab.yandexcloud.net/backend/quiz/shutterstock/internal/initialize"
	"penahub.gitlab.yandexcloud.net/backend/quiz/shutterstock/internal/server/http"
	"penahub.gitlab.yandexcloud.net/backend/quiz/shutterstock/pkg/closer"
	"time"
)

func Run(ctx context.Context, cfg initialize.Config, logger *zap.Logger) error {
	defer func() {
		if r := recover(); r != nil {
			logger.Error("Recovered from a panic", zap.Any("error", r))
		}
	}()

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

	shutdownGroup := closer.NewCloserGroup()

	shutterStockClient := client.NewShutterStockClient(client.Deps{
		ShutterStockApiToken: cfg.ShutterStockApiToken,
		ShutterStockUrl:      cfg.ShutterStockUrl,
		Logger:               logger,
	})

	shutterStockController := controller.NewShutterStockController(shutterStockClient)

	srv := http.NewServer(http.ServerConfig{
		Logger:      logger,
		Controllers: []http.Controller{shutterStockController},
	})

	go func() {
		if err := srv.Start(cfg.HTTPHost + ":" + cfg.HTTPPort); err != nil {
			logger.Error("Server startup error", zap.Error(err))
			cancel()
		}
	}()

	srv.ListRoutes()

	shutdownGroup.Add(closer.CloserFunc(srv.Shutdown))

	<-ctx.Done()

	timeoutCtx, timeoutCancel := context.WithTimeout(context.Background(), 10*time.Second)
	defer timeoutCancel()
	if err := shutdownGroup.Call(timeoutCtx); err != nil {
		if errors.Is(err, context.DeadlineExceeded) {
			logger.Error("Shutdown timed out", zap.Error(err))
		} else {
			logger.Error("Failed to shutdown services gracefully", zap.Error(err))
		}
		return err
	}

	logger.Info("Application has stopped")
	return nil
}