add initial application structure with configuration, logging, and health check endpoints

internal/infra/db/ent.go

@@ -0,0 +1,25 @@
+package db
+
+import (
+	"context"
+
+	"go.uber.org/fx"
+
+	"epic-ent/internal/config"
+	"epic-ent/internal/ent"
+)
+
+func NewEntClient(lc fx.Lifecycle, cfg *config.Config) (*ent.Client, error) {
+	client, err := ent.Open("mysql", cfg.MySQL.DSN)
+	if err != nil {
+		return nil, err
+	}
+
+	lc.Append(fx.Hook{
+		OnStop: func(ctx context.Context) error {
+			return client.Close()
+		},
+	})
+
+	return client, nil
+}