IBC migrate cmd fixes and cleaning

Author: MissingNO57

cmd/fetchd/cmd/helpers.go

@@ -0,0 +1,100 @@
+package cmd
+
+import (
+	"encoding/json"
+	"errors"
+	"fmt"
+	"math/big"
+	"os"
+	"sort"
+	"strings"
+)
+
+func unmarshalState(app map[string]json.RawMessage, key string) (map[string]any, error) {
+	raw := app[key]
+	if len(raw) == 0 {
+		return map[string]any{}, nil
+	}
+	var st map[string]any
+	if err := json.Unmarshal(raw, &st); err != nil {
+		return nil, err
+	}
+	return st, nil
+}
+
+func marshalState(app map[string]json.RawMessage, key string, st map[string]any) error {
+	bz, err := json.Marshal(st)
+	if err != nil {
+		return err
+	}
+	app[key] = bz
+	return nil
+}
+
+func coinsJSON(totals map[string]*big.Int) []any {
+	out := make([]any, 0, len(totals))
+	for den, v := range totals {
+		out = append(out, map[string]any{"denom": den, "amount": v.String()})
+	}
+	sort.Slice(out, func(i, j int) bool {
+		return out[i].(map[string]any)["denom"].(string) <
+			out[j].(map[string]any)["denom"].(string)
+	})
+	return out
+}
+
+func parseCSV(s string) []string {
+	if strings.TrimSpace(s) == "" {
+		return nil
+	}
+	parts := strings.Split(s, ",")
+	out := make([]string, 0, len(parts))
+	for _, p := range parts {
+		p = strings.TrimSpace(p)
+		if p != "" {
+			out = append(out, p)
+		}
+	}
+	sort.Strings(out)
+	return out
+}
+
+func toStringSet(list []string) map[string]struct{} {
+	if len(list) == 0 {
+		return nil
+	}
+	m := make(map[string]struct{}, len(list))
+	for _, v := range list {
+		m[v] = struct{}{}
+	}
+	return m
+}
+func ensureDir(path string) error {
+	dir := ""
+	if i := strings.LastIndex(path, "/"); i >= 0 {
+		dir = path[:i]
+	}
+	if dir == "" {
+		return nil
+	}
+	if st, err := os.Stat(dir); err == nil && st.IsDir() {
+		return nil
+	}
+	if err := os.MkdirAll(dir, 0o755); err != nil && !errors.Is(err, os.ErrExist) {
+		return fmt.Errorf("create dir %q: %w", dir, err)
+	}
+	return nil
+}
+
+func stringifyJSONNumber(v any) string {
+	switch x := v.(type) {
+	case string:
+		return x
+	case float64:
+		return fmt.Sprintf("%.0f", x)
+	case json.Number:
+		return x.String()
+	default:
+		return "0"
+	}
+}