package main

import (
	"context"
	"os"
	"os/signal"
	"syscall"
	"time"

	"github.com/gin-gonic/gin"

	fwdb "github.com/yourorg/go-dw-platform/framework/db"
	fwlogger "github.com/yourorg/go-dw-platform/framework/logger"
	fwmiddleware "github.com/yourorg/go-dw-platform/framework/middleware"

	"github.com/yourorg/go-dw-platform/services/template-service/handler"
	"github.com/yourorg/go-dw-platform/services/template-service/repository"
	"github.com/yourorg/go-dw-platform/services/template-service/service"
	"github.com/yourorg/go-dw-platform/services/template-service/transformer"
)

func main() {
	cfg := LoadConfig()
	log := fwlogger.New("template-service")

	ctx := context.Background()

	pool, err := fwdb.NewPool(ctx, fwdb.Config{
		DSN:             cfg.DB.DSN,
		MaxConns:        cfg.DB.MaxConns,
		MinConns:        cfg.DB.MinConns,
		MaxConnLifetime: cfg.DB.MaxConnLifetime,
		MaxConnIdleTime: cfg.DB.MaxConnIdleTime,
	})
	if err != nil {
		log.Error("failed to connect to database", "error", err)
		os.Exit(1)
	}
	defer pool.Close()

	repo := repository.New(pool)
	tf := transformer.New()
	svc := service.New(
		repo,
		tf,
		cfg.Batch.Size,
		time.Duration(cfg.Batch.TimeoutSec)*time.Second,
		cfg.Batch.MaxRetries,
		cfg.Batch.RetryDelay,
	)

	ingestHandler := handler.New(svc, log)
	healthHandler := handler.NewHealthHandler(pool)

	router := gin.New()
	router.Use(fwmiddleware.Logging(log))
	router.Use(gin.Recovery())

	router.GET("/health", healthHandler.Health)

	api := router.Group("/api")
	api.Use(fwmiddleware.AuthMiddleware())
	api.POST("/ingest", ingestHandler.IngestOrders)

	go func() {
		if err := router.Run(":" + cfg.Port); err != nil {
			log.Error("server stopped", "error", err)
		}
	}()

	sigChan := make(chan os.Signal, 1)
	signal.Notify(sigChan, syscall.SIGINT, syscall.SIGTERM)
	<-sigChan

	log.Info("shutting down gracefully")
}