sneak/integrate-di (#17)

moving this to use uber/fx di framework instead of the ad hoc di setup before

Co-authored-by: sneak <sneak@sneak.berlin>
Reviewed-on: #17

internal/database/database.go

@@ -0,0 +1,52 @@
+package database
+
+import (
+	"context"
+
+	"git.eeqj.de/sneak/gohttpserver/internal/config"
+	"git.eeqj.de/sneak/gohttpserver/internal/logger"
+	"github.com/rs/zerolog"
+	"go.uber.org/fx"
+
+	// spooky action at a distance!
+	// this populates the environment
+	// from a ./.env file automatically
+	// for development configuration.
+	// .env contents should be things like
+	// `DBURL=postgres://user:pass@.../`
+	// (without the backticks, of course)
+	_ "github.com/joho/godotenv/autoload"
+)
+
+type DatabaseParams struct {
+	fx.In
+	Logger *logger.Logger
+	Config *config.Config
+}
+
+type Database struct {
+	URL    string
+	log    *zerolog.Logger
+	params *DatabaseParams
+}
+
+func New(lc fx.Lifecycle, params DatabaseParams) (*Database, error) {
+	s := new(Database)
+	s.params = &params
+	s.log = params.Logger.Get()
+
+	s.log.Info().Msg("Database instantiated")
+
+	lc.Append(fx.Hook{
+		OnStart: func(ctx context.Context) error {
+			s.log.Info().Msg("Database OnStart Hook")
+			// FIXME connect to db
+			return nil
+		},
+		OnStop: func(ctx context.Context) error {
+			// FIXME disconnect from db
+			return nil
+		},
+	})
+	return s, nil
+}