Refactor: cleanup

- Introduce tracing
- Introduce cobra / viper framework
- Introduce resty client
- Seperate files in api/ and bot/
- Trim unused functions

tracing/tracer.go

@@ -0,0 +1,47 @@
+package tracing
+
+import (
+	"context"
+
+	"github.com/spf13/viper"
+	"github.com/uptrace/opentelemetry-go-extra/otelzap"
+	"github.com/uptrace/uptrace-go/uptrace"
+	"go.opentelemetry.io/otel"
+	"go.opentelemetry.io/otel/trace"
+	"go.uber.org/zap"
+)
+
+var (
+	Tracer trace.Tracer
+	Logger *otelzap.Logger
+
+	version string = "v0.0.1"
+)
+
+func InitTracer(appname string) {
+	Tracer = otel.Tracer(appname)
+
+	var l *zap.Logger
+	var err error
+	if viper.GetBool("zap-production") {
+		l, err = zap.NewProduction()
+	} else {
+		l, err = zap.NewDevelopment()
+	}
+	if err != nil {
+		panic(err)
+	}
+	Logger = otelzap.New(l)
+}
+
+func InitUptrace(appname string) {
+	uptrace.ConfigureOpentelemetry(
+		uptrace.WithDSN(viper.GetString("uptrace-dsn")),
+		uptrace.WithServiceName(appname),
+		uptrace.WithServiceVersion(version),
+	)
+}
+
+func DeferUptrace(ctx context.Context) {
+	uptrace.Shutdown(ctx)
+}