package cli

import (
	"encoding/json"
	"fmt"
	"io"
	"sort"
	"strings"
)

// printJSON is the shared -format=json path for every headless command.
func printJSON(w io.Writer, v interface{}) error {
	enc := json.NewEncoder(w)
	enc.SetIndent("", "  ")
	return enc.Encode(v)
}

// printKV renders a map as an aligned "key    value" table, sorted by key.
// Used by `status` and `read` in their default (non-JSON) output.
func printKV(w io.Writer, m map[string]string) {
	keys := make([]string, 0, len(m))
	width := 0
	for k := range m {
		keys = append(keys, k)
		if len(k) > width {
			width = len(k)
		}
	}
	sort.Strings(keys)
	for _, k := range keys {
		fmt.Fprintf(w, "%-*s  %s\n", width, k, m[k])
	}
}

// parseKVArgs turns ["key=value", "other=1"] positional args into a map,
// used by `write` and as auth method params on `login`.
func parseKVArgs(args []string) (map[string]string, error) {
	out := map[string]string{}
	for _, a := range args {
		k, v, ok := strings.Cut(a, "=")
		if !ok {
			return nil, fmt.Errorf("expected key=value, got %q", a)
		}
		out[k] = v
	}
	return out, nil
}