chore(repo): bootstrap nefertty skeleton, tooling and logging

commit: 4308b69dd41bd5779facd395059e8126fc5374a9
author: brice · 29d ago · 2026-09-23 10:36 UTC
parent: none (root commit)
signature: GPG VerifiedCD88F9E564E0102646FB6077A1A07C7C7C3E349D · arch-gpg Verified for the committer email

16 files · +412 -0

A .github/workflows/ci.yml +15 -0

@@ -0,0 +1,15 @@
	1	+	name: CI
	2	+	on: [push, pull_request]
	3	+	jobs:
	4	+	check:
	5	+	runs-on: ubuntu-latest
	6	+	steps:
	7	+	- uses: actions/checkout@v4
	8	+	- uses: actions/setup-go@v5
	9	+	with:
	10	+	go-version: '1.27'
	11	+	- run: go install github.com/bnema/hexcheck@latest
	12	+	- run: go install github.com/vektra/mockery/v3@v3.7.4
	13	+	- run: make check
	14	+	- run: make race
	15	+	- run: make mocks-check

@@ -0,0 +1,15 @@
	1	+	name: CI
	2	+	on: [push, pull_request]
	3	+	jobs:
	4	+	check:
	5	+	runs-on: ubuntu-latest
	6	+	steps:
	7	+	- uses: actions/checkout@v4
	8	+	- uses: actions/setup-go@v5
	9	+	with:
	10	+	go-version: '1.27'
	11	+	- run: go install github.com/bnema/hexcheck@latest
	12	+	- run: go install github.com/vektra/mockery/v3@v3.7.4
	13	+	- run: make check
	14	+	- run: make race
	15	+	- run: make mocks-check

A .gitignore +5 -0

@@ -0,0 +1,5 @@
	1	+	/nefertty
	2	+	*.test
	3	+	*.out
	4	+	coverage/
	5	+	.worktrees/

@@ -0,0 +1,5 @@
	1	+	/nefertty
	2	+	*.test
	3	+	*.out
	4	+	coverage/
	5	+	.worktrees/

A .hexcheck.yaml +13 -0

@@ -0,0 +1,13 @@
	1	+	version: 1
	2	+	components:
	3	+	core: { role: core, paths: [internal/core/**] }
	4	+	ports: { role: ports, paths: [internal/ports/**] }
	5	+	adapters: { role: adapter, paths: [internal/adapters/, internal/logging/] }
	6	+	# app is the composition root: it wires adapters to core, like cmd.
	7	+	entrypoints: { role: entrypoint, paths: [cmd/, internal/app/] }
	8	+	generated: { role: ignore, paths: [internal/mocks/**] }
	9	+	rules:
	10	+	no-adapter-imports-in-core: error
	11	+	no-infra-imports-in-usecase: error
	12	+	no-framework-types-in-core: error
	13	+	no-infra-types-in-ports: error

@@ -0,0 +1,13 @@
	1	+	version: 1
	2	+	components:
	3	+	core: { role: core, paths: [internal/core/**] }
	4	+	ports: { role: ports, paths: [internal/ports/**] }
	5	+	adapters: { role: adapter, paths: [internal/adapters/, internal/logging/] }
	6	+	# app is the composition root: it wires adapters to core, like cmd.
	7	+	entrypoints: { role: entrypoint, paths: [cmd/, internal/app/] }
	8	+	generated: { role: ignore, paths: [internal/mocks/**] }
	9	+	rules:
	10	+	no-adapter-imports-in-core: error
	11	+	no-infra-imports-in-usecase: error
	12	+	no-framework-types-in-core: error
	13	+	no-infra-types-in-ports: error

A .mockery.yml +9 -0

@@ -0,0 +1,9 @@
	1	+	# No interfaces exist yet; Mockery v3 treats this package as a clean no-op.
	2	+	all: false
	3	+	packages:
	4	+	github.com/bnema/nefertty/internal/ports:
	5	+	config:
	6	+	all: true
	7	+	dir: internal/mocks/{{.SrcPackageName}}
	8	+	pkgname: '{{.SrcPackageName}}'
	9	+	filename: '{{.InterfaceName}}.go'

@@ -0,0 +1,9 @@
	1	+	# No interfaces exist yet; Mockery v3 treats this package as a clean no-op.
	2	+	all: false
	3	+	packages:
	4	+	github.com/bnema/nefertty/internal/ports:
	5	+	config:
	6	+	all: true
	7	+	dir: internal/mocks/{{.SrcPackageName}}
	8	+	pkgname: '{{.SrcPackageName}}'
	9	+	filename: '{{.InterfaceName}}.go'

A AGENTS.md +9 -0

@@ -0,0 +1,9 @@
	1	+	# Repository rules
	2	+
	3	+	- Use Go 1.27 only; normal builds and tests use CGO_ENABLED=0.
	4	+	- Keep a lightweight hexagonal architecture: core imports only stdlib and ports.
	5	+	- Owner goroutines own window state; no mutex on window state.
	6	+	- Generate mocks only via Mockery v3 from ports; never handwrite mocks.
	7	+	- Use zerowrap logging with a `component` field on every entry.
	8	+	- Run tests with `-race`.
	9	+	- Use signed conventional commits: `type(scope): description`.

@@ -0,0 +1,9 @@
	1	+	# Repository rules
	2	+
	3	+	- Use Go 1.27 only; normal builds and tests use CGO_ENABLED=0.
	4	+	- Keep a lightweight hexagonal architecture: core imports only stdlib and ports.
	5	+	- Owner goroutines own window state; no mutex on window state.
	6	+	- Generate mocks only via Mockery v3 from ports; never handwrite mocks.
	7	+	- Use zerowrap logging with a `component` field on every entry.
	8	+	- Run tests with `-race`.
	9	+	- Use signed conventional commits: `type(scope): description`.

A LICENSE +21 -0

@@ -0,0 +1,21 @@
	1	+	MIT License
	2	+
	3	+	Copyright (c) 2026 bnema
	4	+
	5	+	Permission is hereby granted, free of charge, to any person obtaining a copy
	6	+	of this software and associated documentation files (the "Software"), to deal
	7	+	in the Software without restriction, including without limitation the rights
	8	+	to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	9	+	copies of the Software, and to permit persons to whom the Software is
	10	+	furnished to do so, subject to the following conditions:
	11	+
	12	+	The above copyright notice and this permission notice shall be included in all
	13	+	copies or substantial portions of the Software.
	14	+
	15	+	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	16	+	IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	17	+	FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
	18	+	AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	19	+	LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
	20	+	OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
	21	+	SOFTWARE.

@@ -0,0 +1,21 @@
	1	+	MIT License
	2	+
	3	+	Copyright (c) 2026 bnema
	4	+
	5	+	Permission is hereby granted, free of charge, to any person obtaining a copy
	6	+	of this software and associated documentation files (the "Software"), to deal
	7	+	in the Software without restriction, including without limitation the rights
	8	+	to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	9	+	copies of the Software, and to permit persons to whom the Software is
	10	+	furnished to do so, subject to the following conditions:
	11	+
	12	+	The above copyright notice and this permission notice shall be included in all
	13	+	copies or substantial portions of the Software.
	14	+
	15	+	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	16	+	IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	17	+	FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
	18	+	AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	19	+	LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
	20	+	OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
	21	+	SOFTWARE.

A Makefile +18 -0

@@ -0,0 +1,18 @@
	1	+	.PHONY: build test vet race mocks mocks-check arch check
	2	+	build:
	3	+	CGO_ENABLED=0 go build ./...
	4	+	test:
	5	+	CGO_ENABLED=0 go test ./...
	6	+	vet:
	7	+	CGO_ENABLED=0 go vet ./...
	8	+	race:
	9	+	# cgo is enabled only for the race test binary.
	10	+	CGO_ENABLED=1 go test -race ./...
	11	+	mocks:
	12	+	$(HOME)/go/bin/mockery
	13	+	mocks-check: mocks
	14	+	git diff --exit-code -- internal/mocks
	15	+	@test -z "$$(git ls-files --others --exclude-standard internal/mocks)"
	16	+	arch:
	17	+	$(HOME)/go/bin/hexcheck -hexcheck.config .hexcheck.yaml -hexcheck.root . ./...
	18	+	check: vet test arch

@@ -0,0 +1,18 @@
	1	+	.PHONY: build test vet race mocks mocks-check arch check
	2	+	build:
	3	+	CGO_ENABLED=0 go build ./...
	4	+	test:
	5	+	CGO_ENABLED=0 go test ./...
	6	+	vet:
	7	+	CGO_ENABLED=0 go vet ./...
	8	+	race:
	9	+	# cgo is enabled only for the race test binary.
	10	+	CGO_ENABLED=1 go test -race ./...
	11	+	mocks:
	12	+	$(HOME)/go/bin/mockery
	13	+	mocks-check: mocks
	14	+	git diff --exit-code -- internal/mocks
	15	+	@test -z "$$(git ls-files --others --exclude-standard internal/mocks)"
	16	+	arch:
	17	+	$(HOME)/go/bin/hexcheck -hexcheck.config .hexcheck.yaml -hexcheck.root . ./...
	18	+	check: vet test arch

A README.md +9 -0

@@ -0,0 +1,9 @@
	1	+	# NeferTTY
	2	+
	3	+	NeferTTY is a minimal Wayland compositor in Go with Niri-style scrollable columns. This repository currently contains only the skeleton and logging.
	4	+
	5	+	Requires Linux and Go 1.27.
	6	+
	7	+	Build: `make build`
	8	+
	9	+	Run: `nefertty --backend=headless --timeout 5s`

@@ -0,0 +1,9 @@
	1	+	# NeferTTY
	2	+
	3	+	NeferTTY is a minimal Wayland compositor in Go with Niri-style scrollable columns. This repository currently contains only the skeleton and logging.
	4	+
	5	+	Requires Linux and Go 1.27.
	6	+
	7	+	Build: `make build`
	8	+
	9	+	Run: `nefertty --backend=headless --timeout 5s`

A cmd/nefertty/main.go +73 -0

@@ -0,0 +1,73 @@
	1	+	package main
	2	+
	3	+	import (
	4	+	"context"
	5	+	"flag"
	6	+	"fmt"
	7	+	"os"
	8	+	"os/signal"
	9	+	"runtime/debug"
	10	+	"syscall"
	11	+
	12	+	"github.com/bnema/nefertty/internal/app"
	13	+	"github.com/bnema/nefertty/internal/logging"
	14	+	)
	15	+
	16	+	func main() {
	17	+	if err := run(); err != nil {
	18	+	os.Exit(1)
	19	+	}
	20	+	}
	21	+
	22	+	func run() error {
	23	+	if len(os.Args) == 2 && os.Args[1] == "version" {
	24	+	info, ok := debug.ReadBuildInfo()
	25	+	if !ok {
	26	+	fmt.Println("unknown")
	27	+	return nil
	28	+	}
	29	+	version := info.Main.Version
	30	+	if version == "" {
	31	+	version = "(devel)"
	32	+	}
	33	+	fmt.Println(version)
	34	+	return nil
	35	+	}
	36	+	flags := flag.NewFlagSet("nefertty", flag.ContinueOnError)
	37	+	backend := flags.String("backend", "drm", "drm or headless")
	38	+	timeout := flags.Duration("timeout", 0, "duration before exit (0 disables timeout)")
	39	+	debugFlag := flags.String("debug", "", "debug components (comma-separated or all)")
	40	+	config := flags.String("config", "", "config path (empty uses XDG default later)")
	41	+	if err := flags.Parse(os.Args[1:]); err != nil {
	42	+	return err
	43	+	}
	44	+	ctx, stop := signal.NotifyContext(context.Background(), os.Interrupt, syscall.SIGTERM)
	45	+	defer stop()
	46	+	ctx, closeLog, err := logging.Open(ctx, *debugFlag)
	47	+	if err != nil {
	48	+	fmt.Fprintln(os.Stderr, err)
	49	+	return err
	50	+	}
	51	+	defer closeLog()
	52	+	log := logging.For(ctx, "app")
	53	+	if backend != "drm" && backend != "headless" {
	54	+	err := fmt.Errorf("invalid backend %q", *backend)
	55	+	log.Error().Err(err).Msg("invalid options")
	56	+	return err
	57	+	}
	58	+	if *timeout < 0 {
	59	+	err := fmt.Errorf("negative timeout")
	60	+	log.Error().Err(err).Msg("invalid options")
	61	+	return err
	62	+	}
	63	+	if flags.NArg() != 0 {
	64	+	err := fmt.Errorf("unexpected arguments: %v", flags.Args())
	65	+	log.Error().Err(err).Msg("invalid options")
	66	+	return err
	67	+	}
	68	+	if err := app.Run(ctx, app.Options{Backend: backend, Config: config, Timeout: *timeout}); err != nil {
	69	+	log.Error().Err(err).Msg("application failed")
	70	+	return err
	71	+	}
	72	+	return nil
	73	+	}

@@ -0,0 +1,73 @@
	1	+	package main
	2	+
	3	+	import (
	4	+	"context"
	5	+	"flag"
	6	+	"fmt"
	7	+	"os"
	8	+	"os/signal"
	9	+	"runtime/debug"
	10	+	"syscall"
	11	+
	12	+	"github.com/bnema/nefertty/internal/app"
	13	+	"github.com/bnema/nefertty/internal/logging"
	14	+	)
	15	+
	16	+	func main() {
	17	+	if err := run(); err != nil {
	18	+	os.Exit(1)
	19	+	}
	20	+	}
	21	+
	22	+	func run() error {
	23	+	if len(os.Args) == 2 && os.Args[1] == "version" {
	24	+	info, ok := debug.ReadBuildInfo()
	25	+	if !ok {
	26	+	fmt.Println("unknown")
	27	+	return nil
	28	+	}
	29	+	version := info.Main.Version
	30	+	if version == "" {
	31	+	version = "(devel)"
	32	+	}
	33	+	fmt.Println(version)
	34	+	return nil
	35	+	}
	36	+	flags := flag.NewFlagSet("nefertty", flag.ContinueOnError)
	37	+	backend := flags.String("backend", "drm", "drm or headless")
	38	+	timeout := flags.Duration("timeout", 0, "duration before exit (0 disables timeout)")
	39	+	debugFlag := flags.String("debug", "", "debug components (comma-separated or all)")
	40	+	config := flags.String("config", "", "config path (empty uses XDG default later)")
	41	+	if err := flags.Parse(os.Args[1:]); err != nil {
	42	+	return err
	43	+	}
	44	+	ctx, stop := signal.NotifyContext(context.Background(), os.Interrupt, syscall.SIGTERM)
	45	+	defer stop()
	46	+	ctx, closeLog, err := logging.Open(ctx, *debugFlag)
	47	+	if err != nil {
	48	+	fmt.Fprintln(os.Stderr, err)
	49	+	return err
	50	+	}
	51	+	defer closeLog()
	52	+	log := logging.For(ctx, "app")
	53	+	if backend != "drm" && backend != "headless" {
	54	+	err := fmt.Errorf("invalid backend %q", *backend)
	55	+	log.Error().Err(err).Msg("invalid options")
	56	+	return err
	57	+	}
	58	+	if *timeout < 0 {
	59	+	err := fmt.Errorf("negative timeout")
	60	+	log.Error().Err(err).Msg("invalid options")
	61	+	return err
	62	+	}
	63	+	if flags.NArg() != 0 {
	64	+	err := fmt.Errorf("unexpected arguments: %v", flags.Args())
	65	+	log.Error().Err(err).Msg("invalid options")
	66	+	return err
	67	+	}
	68	+	if err := app.Run(ctx, app.Options{Backend: backend, Config: config, Timeout: *timeout}); err != nil {
	69	+	log.Error().Err(err).Msg("application failed")
	70	+	return err
	71	+	}
	72	+	return nil
	73	+	}

A go.mod +16 -0

@@ -0,0 +1,16 @@
	1	+	module github.com/bnema/nefertty
	2	+
	3	+	go 1.27
	4	+
	5	+	require (
	6	+	github.com/bnema/zerowrap v1.4.1
	7	+	github.com/rs/zerolog v1.35.1
	8	+	golang.org/x/term v0.46.0
	9	+	)
	10	+
	11	+	require (
	12	+	github.com/mattn/go-colorable v0.1.15 // indirect
	13	+	github.com/mattn/go-isatty v0.0.22 // indirect
	14	+	golang.org/x/sys v0.48.0 // indirect
	15	+	gopkg.in/natefinch/lumberjack.v2 v2.2.1 // indirect
	16	+	)

@@ -0,0 +1,16 @@
	1	+	module github.com/bnema/nefertty
	2	+
	3	+	go 1.27
	4	+
	5	+	require (
	6	+	github.com/bnema/zerowrap v1.4.1
	7	+	github.com/rs/zerolog v1.35.1
	8	+	golang.org/x/term v0.46.0
	9	+	)
	10	+
	11	+	require (
	12	+	github.com/mattn/go-colorable v0.1.15 // indirect
	13	+	github.com/mattn/go-isatty v0.0.22 // indirect
	14	+	golang.org/x/sys v0.48.0 // indirect
	15	+	gopkg.in/natefinch/lumberjack.v2 v2.2.1 // indirect
	16	+	)

A go.sum +14 -0 generated file: collapsed

load diff

A internal/app/app.go +27 -0

@@ -0,0 +1,27 @@
	1	+	// Package app coordinates the application lifecycle.
	2	+	package app
	3	+
	4	+	import (
	5	+	"context"
	6	+	"time"
	7	+
	8	+	"github.com/bnema/nefertty/internal/logging"
	9	+	)
	10	+
	11	+	type Options struct {
	12	+	Backend string
	13	+	Config string
	14	+	Timeout time.Duration
	15	+	}
	16	+
	17	+	func Run(ctx context.Context, opts Options) error {
	18	+	log := logging.For(ctx, "app")
	19	+	log.Info().Str("backend", opts.Backend).Msg("starting nefertty")
	20	+	if opts.Timeout > 0 {
	21	+	var cancel context.CancelFunc
	22	+	ctx, cancel = context.WithTimeout(ctx, opts.Timeout)
	23	+	defer cancel()
	24	+	}
	25	+	<-ctx.Done()
	26	+	return nil
	27	+	}

@@ -0,0 +1,27 @@
	1	+	// Package app coordinates the application lifecycle.
	2	+	package app
	3	+
	4	+	import (
	5	+	"context"
	6	+	"time"
	7	+
	8	+	"github.com/bnema/nefertty/internal/logging"
	9	+	)
	10	+
	11	+	type Options struct {
	12	+	Backend string
	13	+	Config string
	14	+	Timeout time.Duration
	15	+	}
	16	+
	17	+	func Run(ctx context.Context, opts Options) error {
	18	+	log := logging.For(ctx, "app")
	19	+	log.Info().Str("backend", opts.Backend).Msg("starting nefertty")
	20	+	if opts.Timeout > 0 {
	21	+	var cancel context.CancelFunc
	22	+	ctx, cancel = context.WithTimeout(ctx, opts.Timeout)
	23	+	defer cancel()
	24	+	}
	25	+	<-ctx.Done()
	26	+	return nil
	27	+	}

A internal/core/doc.go +3 -0

@@ -0,0 +1,3 @@
	1	+	// Package core holds pure layout, focus, and command domain logic.
	2	+	// It depends only on the standard library and internal/ports.
	3	+	package core

@@ -0,0 +1,3 @@
	1	+	// Package core holds pure layout, focus, and command domain logic.
	2	+	// It depends only on the standard library and internal/ports.
	3	+	package core

A internal/logging/logging.go +98 -0

@@ -0,0 +1,98 @@
	1	+	// Package logging configures component-scoped zerowrap logging.
	2	+	package logging
	3	+
	4	+	import (
	5	+	"context"
	6	+	"fmt"
	7	+	"os"
	8	+	"path/filepath"
	9	+	"strings"
	10	+
	11	+	"github.com/bnema/zerowrap"
	12	+	"github.com/rs/zerolog"
	13	+	"golang.org/x/term"
	14	+	)
	15	+
	16	+	var components = map[string]bool{
	17	+	"core": true, "wayland": true, "input": true, "drm": true,
	18	+	"render": true, "sync": true, "config": true, "app": true,
	19	+	}
	20	+
	21	+	type debugKey struct{}
	22	+	type debugSet map[string]bool
	23	+
	24	+	func ParseDebug(value string) (map[string]bool, error) {
	25	+	selected := make(debugSet)
	26	+	if value == "" {
	27	+	return selected, nil
	28	+	}
	29	+	for _, name := range strings.Split(value, ",") {
	30	+	if name == "all" {
	31	+	selected[name] = true
	32	+	continue
	33	+	}
	34	+	if !components[name] {
	35	+	return nil, fmt.Errorf("invalid debug component %q", name)
	36	+	}
	37	+	selected[name] = true
	38	+	}
	39	+	return selected, nil
	40	+	}
	41	+
	42	+	// Open rotates the previous run's log, opens a fresh JSON log and attaches the logger to ctx.
	43	+	// The caller must invoke close after all logging is complete.
	44	+	func Open(ctx context.Context, debug string) (context.Context, func() error, error) {
	45	+	selected, err := ParseDebug(debug)
	46	+	if err != nil {
	47	+	return nil, nil, err
	48	+	}
	49	+	state := os.Getenv("XDG_STATE_HOME")
	50	+	if state == "" {
	51	+	home, err := os.UserHomeDir()
	52	+	if err != nil {
	53	+	return nil, nil, err
	54	+	}
	55	+	state = filepath.Join(home, ".local", "state")
	56	+	}
	57	+	dir := filepath.Join(state, "nefertty")
	58	+	if err := os.MkdirAll(dir, 0o700); err != nil {
	59	+	return nil, nil, err
	60	+	}
	61	+	path := filepath.Join(dir, "nefertty.log")
	62	+	if err := os.Rename(path, path+".1"); err != nil && !os.IsNotExist(err) {
	63	+	return nil, nil, err
	64	+	}
	65	+	file, err := os.OpenFile(path, os.O_CREATE\|os.O_TRUNC\|os.O_WRONLY, 0o600)
	66	+	if err != nil {
	67	+	return nil, nil, err
	68	+	}
	69	+	var output = zerowrap.Config{Level: "debug", Format: "json", Output: file}
	70	+	if term.IsTerminal(int(os.Stderr.Fd())) {
	71	+	output.Output = &consoleAndFile{file: file}
	72	+	}
	73	+	ctx = zerowrap.WithCtx(ctx, zerowrap.New(output))
	74	+	ctx = context.WithValue(ctx, debugKey{}, debugSet(selected))
	75	+	return ctx, file.Close, nil
	76	+	}
	77	+
	78	+	type consoleAndFile struct{ file *os.File }
	79	+
	80	+	func (w *consoleAndFile) Write(p []byte) (int, error) {
	81	+	// JSON remains the canonical output; terminal users also see each entry.
	82	+	if _, err := os.Stderr.Write(p); err != nil {
	83	+	return 0, err
	84	+	}
	85	+	return w.file.Write(p)
	86	+	}
	87	+
	88	+	// For returns a component logger with debug enabled only for selected components.
	89	+	func For(ctx context.Context, component string) zerowrap.Logger {
	90	+	log := zerowrap.FromCtxWithField(ctx, zerowrap.FieldComponent, component)
	91	+	selected, _ := ctx.Value(debugKey{}).(debugSet)
	92	+	level := zerolog.InfoLevel
	93	+	if selected["all"] \|\| selected[component] {
	94	+	level = zerolog.DebugLevel
	95	+	}
	96	+	log = zerowrap.Logger{Logger: log.Level(level)}
	97	+	return log
	98	+	}

@@ -0,0 +1,98 @@
	1	+	// Package logging configures component-scoped zerowrap logging.
	2	+	package logging
	3	+
	4	+	import (
	5	+	"context"
	6	+	"fmt"
	7	+	"os"
	8	+	"path/filepath"
	9	+	"strings"
	10	+
	11	+	"github.com/bnema/zerowrap"
	12	+	"github.com/rs/zerolog"
	13	+	"golang.org/x/term"
	14	+	)
	15	+
	16	+	var components = map[string]bool{
	17	+	"core": true, "wayland": true, "input": true, "drm": true,
	18	+	"render": true, "sync": true, "config": true, "app": true,
	19	+	}
	20	+
	21	+	type debugKey struct{}
	22	+	type debugSet map[string]bool
	23	+
	24	+	func ParseDebug(value string) (map[string]bool, error) {
	25	+	selected := make(debugSet)
	26	+	if value == "" {
	27	+	return selected, nil
	28	+	}
	29	+	for _, name := range strings.Split(value, ",") {
	30	+	if name == "all" {
	31	+	selected[name] = true
	32	+	continue
	33	+	}
	34	+	if !components[name] {
	35	+	return nil, fmt.Errorf("invalid debug component %q", name)
	36	+	}
	37	+	selected[name] = true
	38	+	}
	39	+	return selected, nil
	40	+	}
	41	+
	42	+	// Open rotates the previous run's log, opens a fresh JSON log and attaches the logger to ctx.
	43	+	// The caller must invoke close after all logging is complete.
	44	+	func Open(ctx context.Context, debug string) (context.Context, func() error, error) {
	45	+	selected, err := ParseDebug(debug)
	46	+	if err != nil {
	47	+	return nil, nil, err
	48	+	}
	49	+	state := os.Getenv("XDG_STATE_HOME")
	50	+	if state == "" {
	51	+	home, err := os.UserHomeDir()
	52	+	if err != nil {
	53	+	return nil, nil, err
	54	+	}
	55	+	state = filepath.Join(home, ".local", "state")
	56	+	}
	57	+	dir := filepath.Join(state, "nefertty")
	58	+	if err := os.MkdirAll(dir, 0o700); err != nil {
	59	+	return nil, nil, err
	60	+	}
	61	+	path := filepath.Join(dir, "nefertty.log")
	62	+	if err := os.Rename(path, path+".1"); err != nil && !os.IsNotExist(err) {
	63	+	return nil, nil, err
	64	+	}
	65	+	file, err := os.OpenFile(path, os.O_CREATE\|os.O_TRUNC\|os.O_WRONLY, 0o600)
	66	+	if err != nil {
	67	+	return nil, nil, err
	68	+	}
	69	+	var output = zerowrap.Config{Level: "debug", Format: "json", Output: file}
	70	+	if term.IsTerminal(int(os.Stderr.Fd())) {
	71	+	output.Output = &consoleAndFile{file: file}
	72	+	}
	73	+	ctx = zerowrap.WithCtx(ctx, zerowrap.New(output))
	74	+	ctx = context.WithValue(ctx, debugKey{}, debugSet(selected))
	75	+	return ctx, file.Close, nil
	76	+	}
	77	+
	78	+	type consoleAndFile struct{ file *os.File }
	79	+
	80	+	func (w *consoleAndFile) Write(p []byte) (int, error) {
	81	+	// JSON remains the canonical output; terminal users also see each entry.
	82	+	if _, err := os.Stderr.Write(p); err != nil {
	83	+	return 0, err
	84	+	}
	85	+	return w.file.Write(p)
	86	+	}
	87	+
	88	+	// For returns a component logger with debug enabled only for selected components.
	89	+	func For(ctx context.Context, component string) zerowrap.Logger {
	90	+	log := zerowrap.FromCtxWithField(ctx, zerowrap.FieldComponent, component)
	91	+	selected, _ := ctx.Value(debugKey{}).(debugSet)
	92	+	level := zerolog.InfoLevel
	93	+	if selected["all"] \|\| selected[component] {
	94	+	level = zerolog.DebugLevel
	95	+	}
	96	+	log = zerowrap.Logger{Logger: log.Level(level)}
	97	+	return log
	98	+	}

A internal/logging/logging_test.go +80 -0

@@ -0,0 +1,80 @@
	1	+	package logging
	2	+
	3	+	import (
	4	+	"bytes"
	5	+	"context"
	6	+	"encoding/json"
	7	+	"os"
	8	+	"path/filepath"
	9	+	"testing"
	10	+	)
	11	+
	12	+	func TestParseDebug(t *testing.T) {
	13	+	for _, tc := range []struct {
	14	+	input string
	15	+	wantError bool
	16	+	selected []string
	17	+	}{
	18	+	{"", false, nil}, {"core,app", false, []string{"core", "app"}},
	19	+	{"all", false, []string{"all"}}, {"unknown", true, nil}, {"core,", true, nil},
	20	+	} {
	21	+	got, err := ParseDebug(tc.input)
	22	+	if (err != nil) != tc.wantError {
	23	+	t.Fatalf("ParseDebug(%q): %v", tc.input, err)
	24	+	}
	25	+	for _, name := range tc.selected {
	26	+	if !got[name] {
	27	+	t.Errorf("ParseDebug(%q) missing %s", tc.input, name)
	28	+	}
	29	+	}
	30	+	}
	31	+	}
	32	+
	33	+	func TestComponentLevelsAndRotation(t *testing.T) {
	34	+	t.Setenv("XDG_STATE_HOME", t.TempDir())
	35	+	path := filepath.Join(os.Getenv("XDG_STATE_HOME"), "nefertty", "nefertty.log")
	36	+	for run := 0; run < 2; run++ {
	37	+	ctx, closeLog, err := Open(context.Background(), "core")
	38	+	if err != nil {
	39	+	t.Fatal(err)
	40	+	}
	41	+	core := For(ctx, "core")
	42	+	app := For(ctx, "app")
	43	+	core.Debug().Msg("visible")
	44	+	app.Debug().Msg("hidden")
	45	+	app.Info().Msg("startup")
	46	+	if err := closeLog(); err != nil {
	47	+	t.Fatal(err)
	48	+	}
	49	+	data, err := os.ReadFile(path)
	50	+	if err != nil {
	51	+	t.Fatal(err)
	52	+	}
	53	+	lines := splitLines(data)
	54	+	if len(lines) != 2 {
	55	+	t.Fatalf("expected 2 entries, got %q", data)
	56	+	}
	57	+	for _, line := range lines {
	58	+	var entry map[string]any
	59	+	if err := json.Unmarshal(line, &entry); err != nil {
	60	+	t.Fatal(err)
	61	+	}
	62	+	if entry["component"] != "core" && entry["component"] != "app" {
	63	+	t.Fatalf("missing component: %v", entry)
	64	+	}
	65	+	}
	66	+	}
	67	+	if _, err := os.Stat(path + ".1"); err != nil {
	68	+	t.Fatal(err)
	69	+	}
	70	+	}
	71	+
	72	+	func splitLines(data []byte) [][]byte {
	73	+	var lines [][]byte
	74	+	for _, line := range bytes.Split(data, []byte("\n")) {
	75	+	if len(line) > 0 {
	76	+	lines = append(lines, line)
	77	+	}
	78	+	}
	79	+	return lines
	80	+	}

@@ -0,0 +1,80 @@
	1	+	package logging
	2	+
	3	+	import (
	4	+	"bytes"
	5	+	"context"
	6	+	"encoding/json"
	7	+	"os"
	8	+	"path/filepath"
	9	+	"testing"
	10	+	)
	11	+
	12	+	func TestParseDebug(t *testing.T) {
	13	+	for _, tc := range []struct {
	14	+	input string
	15	+	wantError bool
	16	+	selected []string
	17	+	}{
	18	+	{"", false, nil}, {"core,app", false, []string{"core", "app"}},
	19	+	{"all", false, []string{"all"}}, {"unknown", true, nil}, {"core,", true, nil},
	20	+	} {
	21	+	got, err := ParseDebug(tc.input)
	22	+	if (err != nil) != tc.wantError {
	23	+	t.Fatalf("ParseDebug(%q): %v", tc.input, err)
	24	+	}
	25	+	for _, name := range tc.selected {
	26	+	if !got[name] {
	27	+	t.Errorf("ParseDebug(%q) missing %s", tc.input, name)
	28	+	}
	29	+	}
	30	+	}
	31	+	}
	32	+
	33	+	func TestComponentLevelsAndRotation(t *testing.T) {
	34	+	t.Setenv("XDG_STATE_HOME", t.TempDir())
	35	+	path := filepath.Join(os.Getenv("XDG_STATE_HOME"), "nefertty", "nefertty.log")
	36	+	for run := 0; run < 2; run++ {
	37	+	ctx, closeLog, err := Open(context.Background(), "core")
	38	+	if err != nil {
	39	+	t.Fatal(err)
	40	+	}
	41	+	core := For(ctx, "core")
	42	+	app := For(ctx, "app")
	43	+	core.Debug().Msg("visible")
	44	+	app.Debug().Msg("hidden")
	45	+	app.Info().Msg("startup")
	46	+	if err := closeLog(); err != nil {
	47	+	t.Fatal(err)
	48	+	}
	49	+	data, err := os.ReadFile(path)
	50	+	if err != nil {
	51	+	t.Fatal(err)
	52	+	}
	53	+	lines := splitLines(data)
	54	+	if len(lines) != 2 {
	55	+	t.Fatalf("expected 2 entries, got %q", data)
	56	+	}
	57	+	for _, line := range lines {
	58	+	var entry map[string]any
	59	+	if err := json.Unmarshal(line, &entry); err != nil {
	60	+	t.Fatal(err)
	61	+	}
	62	+	if entry["component"] != "core" && entry["component"] != "app" {
	63	+	t.Fatalf("missing component: %v", entry)
	64	+	}
	65	+	}
	66	+	}
	67	+	if _, err := os.Stat(path + ".1"); err != nil {
	68	+	t.Fatal(err)
	69	+	}
	70	+	}
	71	+
	72	+	func splitLines(data []byte) [][]byte {
	73	+	var lines [][]byte
	74	+	for _, line := range bytes.Split(data, []byte("\n")) {
	75	+	if len(line) > 0 {
	76	+	lines = append(lines, line)
	77	+	}
	78	+	}
	79	+	return lines
	80	+	}

A internal/ports/doc.go +2 -0

@@ -0,0 +1,2 @@
	1	+	// Package ports defines boundary interfaces and channel message types.
	2	+	package ports

@@ -0,0 +1,2 @@
	1	+	// Package ports defines boundary interfaces and channel message types.
	2	+	package ports