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cli: maturity polish — color, error translation, tabwriter consistency

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Adds three small but high-leverage presentation tweaks for v0.1:

1. internal/cli/style is a new ~70 LOC package with Pass/Fail/Warn/
   Dim/Bold helpers. Each is TTY-gated and obeys NO_COLOR. No
   external dep. Wired into the doctor PASS/FAIL/WARN status, the
   "banger:" error prefix on stderr, and the dim 'ready in <elapsed>'
   line.
2. internal/cli/errors translates rpc.ErrorResponse into user-facing
   text. operation_failed becomes invisible (the message wins);
   not_found, already_exists, bad_request, bad_version, unauthorized,
   unknown_method get short labels; unknown codes pass through. The
   daemon-attached op_id lands in dim parens — paste into
   journalctl --grep to find the daemon log line that produced the
   failure.
3. Tabwriter config converges on (0, 8, 2, ' ', 0) across every
   list/table command. The vm prune confirmation table picked up the
   right config; system install + system status switched from bare
   "key: value\n" lines to tabular form. printVMSpecLine drops its
   Unicode middle dot for an ASCII '|' so terminals without UTF-8
   render cleanly.

Tests cover translateRPCError for every code, style helpers no-op
on non-TTY and under NO_COLOR. Smoke status greps switch from
"key: value" to "key   value" to match the new format.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
Thales Maciel 2026-04-26 22:27:07 -03:00
parent e47b8146dc
commit 71a332a6a1
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GPG key ID: 33112E6833C34679
11 changed files with 358 additions and 28 deletions
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13
internal/cli/printers.go
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@ -3,12 +3,14 @@ package cli
import (
"encoding/json"
"fmt"
"io"
"os"
"sort"
"strings"
"text/tabwriter"
"banger/internal/api"
"banger/internal/cli/style"
"banger/internal/model"
"banger/internal/system"
)
@ -278,8 +280,19 @@ func printKernelCatalogTable(out anyWriter, entries []api.KernelCatalogEntry) er
// -- doctor printer -------------------------------------------------
func printDoctorReport(out anyWriter, report system.Report) error {
colorWriter, _ := out.(io.Writer)
for _, check := range report.Checks {
status := strings.ToUpper(string(check.Status))
if colorWriter != nil {
switch check.Status {
case system.CheckStatusPass:
status = style.Pass(colorWriter, status)
case system.CheckStatusFail:
status = style.Fail(colorWriter, status)
case system.CheckStatusWarn:
status = style.Warn(colorWriter, status)
}
}
if _, err := fmt.Fprintf(out, "%s\t%s\n", status, check.Name); err != nil {
return err
}