Add configuration inspection commands

internal/cli/configkit_commands.go

@@ -8,9 +8,66 @@ import (
 	"io"
 	"strings"
 
+	configkit "gitea.maximumdirect.net/eric/ConfigKit"
 	"gitea.maximumdirect.net/eric/notarius/internal/core/config"
 )
 
+func runConfigEffective(args []string, stdout, stderr io.Writer, opts Options) int {
+	fs := flag.NewFlagSet("config effective", flag.ContinueOnError)
+	fs.SetOutput(io.Discard)
+	configPath := fs.String("config", "", "config file path")
+	profile := fs.String("config-profile", "", "configuration profile")
+	if err := fs.Parse(args); err != nil {
+		fmt.Fprintf(stderr, "notarius: %v\n", err)
+		return 2
+	}
+	if fs.NArg() != 0 {
+		fmt.Fprintf(stderr, "notarius: unexpected argument %q\n", fs.Arg(0))
+		return 2
+	}
+	loaded, _, err := loadConfigKit(*configPath, *profile, nil, opts)
+	if err != nil {
+		writeConfigLoadError(stderr, err)
+		return 1
+	}
+	if err := loaded.WriteEffective(stdout); err != nil {
+		fmt.Fprintf(stderr, "notarius: write effective configuration: %v\n", err)
+		return 1
+	}
+	return 0
+}
+
+func runConfigExplain(args []string, stdout, stderr io.Writer, opts Options) int {
+	fs := flag.NewFlagSet("config explain", flag.ContinueOnError)
+	fs.SetOutput(io.Discard)
+	configPath := fs.String("config", "", "config file path")
+	profile := fs.String("config-profile", "", "configuration profile")
+	if err := fs.Parse(args); err != nil {
+		fmt.Fprintf(stderr, "notarius: %v\n", err)
+		return 2
+	}
+	if fs.NArg() != 1 {
+		fmt.Fprintln(stderr, "notarius: config explain requires exactly one JSON Pointer")
+		return 2
+	}
+	pointer := fs.Arg(0)
+	parsed, err := configkit.ParsePath(pointer)
+	if err != nil || parsed.String() != pointer {
+		fmt.Fprintf(stderr, "notarius: %q is not a canonical JSON Pointer\n", pointer)
+		return 2
+	}
+	loaded, _, err := loadConfigKit(*configPath, *profile, nil, opts)
+	if err != nil {
+		writeConfigLoadError(stderr, err)
+		return 1
+	}
+	if err := loaded.WriteExplanation(stdout, pointer); err != nil {
+		fmt.Fprintf(stderr, "notarius: write configuration explanation: %v\n", err)
+		return 1
+	}
+	return 0
+}
+
 func runConfigValidate(args []string, stdout, stderr io.Writer, opts Options) int {
 	fs := flag.NewFlagSet("config validate", flag.ContinueOnError)
 	fs.SetOutput(io.Discard)