feat: Phase 1 — config, auth, OAuth2 PKCE, CLI scaffold, token store

internal/output/output.go

@@ -0,0 +1,63 @@
+package output
+
+import (
+	"encoding/json"
+	"fmt"
+	"io"
+	"os"
+	"text/tabwriter"
+)
+
+type Format string
+
+const (
+	FormatTable Format = "table"
+	FormatJSON  Format = "json"
+	FormatYAML  Format = "yaml"
+)
+
+type Printer struct {
+	format Format
+	out    io.Writer
+}
+
+func NewPrinter(format Format) *Printer {
+	return &Printer{format: format, out: os.Stdout}
+}
+
+func (p *Printer) PrintJSON(v any) error {
+	enc := json.NewEncoder(p.out)
+	enc.SetIndent("", "  ")
+	return enc.Encode(v)
+}
+
+func (p *Printer) PrintTable(headers []string, rows [][]string) {
+	w := tabwriter.NewWriter(p.out, 0, 0, 2, ' ', 0)
+	defer w.Flush()
+
+	for i, h := range headers {
+		if i > 0 {
+			fmt.Fprint(w, "\t")
+		}
+		fmt.Fprint(w, h)
+	}
+	fmt.Fprintln(w)
+
+	for _, row := range rows {
+		for i, cell := range row {
+			if i > 0 {
+				fmt.Fprint(w, "\t")
+			}
+			fmt.Fprint(w, cell)
+		}
+		fmt.Fprintln(w)
+	}
+}
+
+func (p *Printer) PrintLine(s string) {
+	fmt.Fprintln(p.out, s)
+}
+
+func PrintError(err error) {
+	fmt.Fprintf(os.Stderr, "Error: %v\n", err)
+}