update config management using viper.

README.md

@@ -106,7 +106,8 @@ AMTUI uses the following dependencies:
 - `github.com/gdamore/tcell/v2`: Terminal handling and screen painting.
 - `github.com/prometheus/alertmanager/api/v2/client`: Alertmanager API client.
 - `github.com/rivo/tview`: Terminal-based interactive viewer.
-- `gopkg.in/yaml.v3`: YAML support for the configuration file.
+- `github.com/spf13/pflag`: Flag parsing.
+- `github.com/spf13/viper`: Configuration management.
 
 ## Contributing
 

go.mod

@@ -7,11 +7,13 @@ require (
 	github.com/go-openapi/swag v0.22.3
 	github.com/prometheus/alertmanager v0.25.0
 	github.com/rivo/tview v0.0.0-20230814110005-ccc2c8119703
-	gopkg.in/yaml.v3 v3.0.1
+	github.com/spf13/pflag v1.0.5
+	github.com/spf13/viper v1.16.0
 )
 
 require (
 	github.com/asaskevich/govalidator v0.0.0-20210307081110-f21760c49a8d // indirect
+	github.com/fsnotify/fsnotify v1.6.0 // indirect
 	github.com/gdamore/encoding v1.0.0 // indirect
 	github.com/go-logr/logr v1.2.3 // indirect
 	github.com/go-logr/stdr v1.2.2 // indirect
@@ -24,19 +26,28 @@ require (
 	github.com/go-openapi/spec v0.20.7 // indirect
 	github.com/go-openapi/strfmt v0.21.3 // indirect
 	github.com/go-openapi/validate v0.22.0 // indirect
+	github.com/hashicorp/hcl v1.0.0 // indirect
 	github.com/josharian/intern v1.0.0 // indirect
 	github.com/lucasb-eyer/go-colorful v1.2.0 // indirect
+	github.com/magiconair/properties v1.8.7 // indirect
 	github.com/mailru/easyjson v0.7.7 // indirect
 	github.com/mattn/go-runewidth v0.0.14 // indirect
 	github.com/mitchellh/mapstructure v1.5.0 // indirect
 	github.com/oklog/ulid v1.3.1 // indirect
 	github.com/opentracing/opentracing-go v1.2.0 // indirect
+	github.com/pelletier/go-toml/v2 v2.0.8 // indirect
 	github.com/rivo/uniseg v0.4.3 // indirect
+	github.com/spf13/afero v1.9.5 // indirect
+	github.com/spf13/cast v1.5.1 // indirect
+	github.com/spf13/jwalterweatherman v1.1.0 // indirect
+	github.com/subosito/gotenv v1.4.2 // indirect
 	go.mongodb.org/mongo-driver v1.11.0 // indirect
 	go.opentelemetry.io/otel v1.11.1 // indirect
 	go.opentelemetry.io/otel/trace v1.11.1 // indirect
-	golang.org/x/sys v0.6.0 // indirect
+	golang.org/x/sys v0.8.0 // indirect
 	golang.org/x/term v0.6.0 // indirect
-	golang.org/x/text v0.7.0 // indirect
+	golang.org/x/text v0.9.0 // indirect
+	gopkg.in/ini.v1 v1.67.0 // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
 )