log in logfmt via zap, with nicer console output in dev

13 files changed, 197 insertions, 115 deletions

diff --git a/cmd/build/main.go b/cmd/build/main.go
index 069f9bd..0b1cc46 100644
--- a/cmd/build/main.go
+++ b/cmd/build/main.go
@@ -3,11 +3,10 @@ package main
 import (
 	"fmt"
 	"io/fs"
-	"log"
-	"log/slog"
 	"os"
 
 	"website/internal/builder"
+	"website/internal/log"
 
 	"github.com/BurntSushi/toml"
 	"github.com/ardanlabs/conf/v3"
@@ -15,22 +14,17 @@ import (
 )
 
 func main() {
-	if os.Getenv("DEBUG") != "" {
-		slog.SetLogLoggerLevel(slog.LevelDebug)
-	}
-	log.SetFlags(log.LstdFlags | log.Lmsgprefix)
-	log.SetPrefix("build: ")
-	slog.Debug("starting build process")
-
 	ioConfig := builder.IOConfig{}
 	if help, err := conf.Parse("", &ioConfig); err != nil {
 		if errors.Is(err, conf.ErrHelpWanted) {
 			fmt.Println(help)
 			os.Exit(1)
 		}
-		log.Panicf("parsing I/O configuration: %v", err)
+		panic("error parsing configuration: " + err.Error())
 	}
+	log.Configure(!ioConfig.Development)
 
+	log.Debug("starting build process")
 	if ioConfig.Source != "." {
 		err := os.Chdir(ioConfig.Source)
 		if err != nil {
@@ -41,15 +35,11 @@ func main() {
 	if err := builder.BuildSite(ioConfig); err != nil {
 		switch cause := errors.Cause(err).(type) {
 		case *fs.PathError:
-			slog.Info("pathError")
-			slog.Error(fmt.Sprintf("%s", err))
+			log.Error("path error", "error", err)
 		case toml.ParseError:
-			slog.Info("parseError")
-			slog.Error(fmt.Sprintf("%s", err))
+			log.Info("parse error", "error", err)
 		default:
-			slog.Info("other")
-			slog.Error(fmt.Sprintf("cause:%+v", errors.Cause(cause)))
-			slog.Error(fmt.Sprintf("%+v", cause))
+			log.Info("other error", "error", err, "cause", errors.Cause(cause))
 		}
 		os.Exit(1)
 	}
diff --git a/cmd/cspgenerator/cspgenerator.go b/cmd/cspgenerator/cspgenerator.go
index f79a591..89d2718 100644
--- a/cmd/cspgenerator/cspgenerator.go
+++ b/cmd/cspgenerator/cspgenerator.go
@@ -1,13 +1,13 @@
 package main
 
 import (
-	"log"
 	"website/internal/config"
+	"website/internal/log"
 )
 
 func main() {
 	err := config.GenerateCSP()
 	if err != nil {
-		log.Fatal(err)
+		log.Fatal("error generating csp", "error", err)
 	}
 }
diff --git a/cmd/dev/main.go b/cmd/dev/main.go
index aa3102f..459cfaf 100644
--- a/cmd/dev/main.go
+++ b/cmd/dev/main.go
@@ -5,8 +5,6 @@ import (
 	"fmt"
 	"io"
 	"io/fs"
-	"log"
-	"log/slog"
 	"net/http"
 	"net/http/httputil"
 
@@ -15,12 +13,12 @@ import (
 	"os/signal"
 	"path"
 	"path/filepath"
-	"strings"
 	"sync"
 	"syscall"
 	"time"
 
 	"website/internal/config"
+	"website/internal/log"
 
 	"github.com/antage/eventsource"
 	"github.com/ardanlabs/conf/v3"
@@ -41,14 +39,14 @@ func RunCommandPiped(
 	command string,
 	args ...string,
 ) (cmd *exec.Cmd, err error) {
-	slog.Debug(fmt.Sprintf("running command %s %s", command, strings.Join(args, " ")))
+	log.Debug("running command", "command", command, "args", args)
 	cmd = exec.CommandContext(ctx, command, args...)
 	cmd.Env = append(os.Environ(), "DEBUG=")
 	cmd.Cancel = func() error {
-		slog.Debug("signalling child")
+		log.Debug("signalling child")
 		err := cmd.Process.Signal(os.Interrupt)
 		if err != nil {
-			slog.Error(fmt.Sprintf("signal error: %v", err))
+			log.Error("signal error:", "error", err)
 		}
 		return err
 	}
@@ -80,12 +78,12 @@ func NewFileWatcher(pollTime time.Duration) (*FileWatcher, error) {
 }
 
 func (watcher FileWatcher) WatchAllFiles(from string) error {
-	slog.Debug(fmt.Sprintf("watching files under %s", from))
+	log.Debug("watching files under", "from", from)
 	err := filepath.Walk(from, func(path string, info fs.FileInfo, err error) error {
 		if err != nil {
 			return err
 		}
-		// slog.Debug(fmt.Sprintf("adding file %s to watcher", path))
+		// log.Debug(fmt.Sprintf("adding file %s to watcher", path))
 		if err = watcher.Add(path); err != nil {
 			return err
 		}
@@ -107,7 +105,11 @@ func build(ctx context.Context, config DevConfig) error {
 	}
 
 	err = cmd.Run()
-	slog.Debug(fmt.Sprintf("build command exited with code %d", cmd.ProcessState.ExitCode()))
+	log.Debug(
+		"build command exited",
+		"status",
+		cmd.ProcessState.ExitCode(),
+	)
 	if err != nil {
 		return errors.WithMessage(err, "error running build command")
 	}
@@ -148,7 +150,7 @@ func server(ctx context.Context, devConfig DevConfig) error {
 	for {
 		select {
 		case <-ctx.Done():
-			slog.Debug("server context done")
+			log.Debug("server context done")
 			err := cmd.Process.Signal(os.Interrupt)
 			if err != nil {
 				return err
@@ -161,10 +163,8 @@ func server(ctx context.Context, devConfig DevConfig) error {
 }
 
 func main() {
-	if os.Getenv("DEBUG") != "" {
-		slog.SetLogLoggerLevel(slog.LevelDebug)
-	}
 	var wg sync.WaitGroup
+	log.Configure(false)
 
 	devConfig := DevConfig{}
 	help, err := conf.Parse("", &devConfig)
@@ -173,23 +173,23 @@ func main() {
 			fmt.Println(help)
 			os.Exit(1)
 		}
-		log.Panicf("parsing dev configuration: %v", err)
+		log.Panic("parsing dev configuration", "error", err)
 	}
 
-	slog.Debug(fmt.Sprintf("using folder %s for build output", devConfig.TempDir))
+	log.Debug("running with in /tmp", "dir", devConfig.TempDir)
 
 	ctx, cancel := context.WithCancel(context.Background())
 	defer cancel()
 
-	slog.Debug("setting interrupt handler")
+	log.Debug("setting interrupt handler")
 	c := make(chan os.Signal, 1)
 	signal.Notify(c, os.Interrupt, syscall.SIGTERM)
 	go func() {
 		sig := <-c
-		slog.Info(fmt.Sprintf("shutting down on signal %d", sig))
+		log.Info("shutting down on signal", "sig", sig)
 		cancel()
 		sig = <-c
-		slog.Info(fmt.Sprintf("got second signal, dying %d", sig))
+		log.Info("got second signal, dying", "sig", sig)
 		os.Exit(1)
 	}()
 
@@ -205,9 +205,9 @@ func main() {
 	go func() {
 		defer wg.Done()
 		defer devCancel()
-		slog.Debug("waiting for first server launch")
+		log.Debug("waiting for first server launch")
 		<-serverChan
-		slog.Debug("got first server launch event")
+		log.Debug("got first server launch event")
 
 		http.Handle("/", &httputil.ReverseProxy{
 			Rewrite: func(req *httputil.ProxyRequest) {
@@ -220,7 +220,7 @@ func main() {
 		go func() {
 			err := srv.ListenAndServe()
 			if err != nil && err != http.ErrServerClosed {
-				slog.Error(err.Error())
+				log.Error(err.Error())
 				cancel()
 			}
 			done <- true
@@ -228,29 +228,29 @@ func main() {
 		go func() {
 			for ready := range serverChan {
 				if ready {
-					slog.Debug("sending reload message")
+					log.Debug("sending reload message")
 					eventsource.SendEventMessage("reload", "", "")
 				} else {
-					slog.Debug("server not ready")
+					log.Debug("server not ready")
 				}
 			}
 		}()
-		slog.Info(fmt.Sprintf("dev server listening on %s", devConfig.BaseURL.Host))
+		log.Info("dev server listening on", "host", devConfig.BaseURL.String())
 		<-done
-		slog.Debug("dev server closed")
+		log.Debug("dev server closed")
 	}()
 
 	fw, err := NewFileWatcher(500 * time.Millisecond)
 	if err != nil {
-		log.Fatalf("error creating file watcher: %v", err)
+		log.Fatal("error creating file watcher", "error", err)
 	}
 	err = fw.WatchAllFiles("content")
 	if err != nil {
-		log.Fatalf("could not watch files in content directory: %v", err)
+		log.Fatal("could not watch files in content directory", "error", err)
 	}
 	err = fw.WatchAllFiles("templates")
 	if err != nil {
-		log.Fatalf("could not watch files in templates directory: %v", err)
+		log.Fatal("could not watch files in templates directory", "error", err)
 	}
 
 	var exitCode int
@@ -258,14 +258,14 @@ func main() {
 loop:
 	for {
 		serverCtx, stopServer := context.WithCancel(ctx)
-		slog.Debug("starting build")
+		log.Debug("starting build")
 
 		err := build(ctx, devConfig)
 		if err != nil {
-			slog.Error(fmt.Sprintf("build error: %v", err))
+			log.Error("build error:", "error", err)
 			// don't set up the server until there's a FS change event
 		} else {
-			slog.Debug("setting up server")
+			log.Debug("setting up server")
 			wg.Add(1)
 			go func() {
 				defer wg.Done()
@@ -276,43 +276,43 @@ loop:
 
 		select {
 		case <-ctx.Done():
-			slog.Debug("main context cancelled")
-			slog.Debug("calling server shutdown")
+			log.Debug("main context cancelled")
+			log.Debug("calling server shutdown")
 			err := srv.Shutdown(devCtx)
 			if err != nil {
-				slog.Debug("shutdown error", "error", err)
+				log.Debug("shutdown error", "error", err)
 			}
 			exitCode = 1
 			break loop
 		case event := <-fw.Events:
-			slog.Debug(fmt.Sprintf("event received: %v", event))
+			log.Debug("event received:", "event", event)
 			stopServer()
 			serverChan <- false
-			slog.Debug("waiting for server shutdown")
+			log.Debug("waiting for server shutdown")
 			<-serverErr
-			slog.Debug("server shutdown completed")
+			log.Debug("server shutdown completed")
 			continue
 		case err = <-serverErr:
 			if err != nil && err != context.Canceled {
 				var exerr *exec.ExitError
-				slog.Error(fmt.Sprintf("server reported error: %v", err))
+				log.Error("server reported error:", "error", err)
 				if errors.As(err, &exerr) {
-					slog.Debug("server exit error")
+					log.Debug("server exit error")
 				} else {
-					slog.Debug("server other error")
+					log.Debug("server other error")
 				}
 				break
 			}
-			slog.Debug("no error or server context cancelled")
+			log.Debug("no error or server context cancelled")
 			continue
 		}
 
-		slog.Debug("waiting on server")
+		log.Debug("waiting on server")
 		exitCode = 0
 		break
 	}
 
-	slog.Debug("waiting for wg before shutting down")
+	log.Debug("waiting for wg before shutting down")
 	wg.Wait()
 	os.Exit(exitCode)
 }
diff --git a/cmd/server/main.go b/cmd/server/main.go
index bae215a..464c438 100644
--- a/cmd/server/main.go
+++ b/cmd/server/main.go
@@ -2,12 +2,11 @@ package main
 
 import (
 	"fmt"
-	"log"
-	"log/slog"
 	"os"
 	"os/signal"
 	"sync"
 
+	"website/internal/log"
 	"website/internal/server"
 
 	"github.com/ardanlabs/conf/v3"
@@ -20,12 +19,6 @@ var (
 )
 
 func main() {
-	if os.Getenv("DEBUG") != "" {
-		slog.SetLogLoggerLevel(slog.LevelDebug)
-	}
-	log.SetFlags(log.LstdFlags | log.Lmsgprefix)
-	log.SetPrefix("server: ")
-
 	runtimeConfig := server.Config{}
 	help, err := conf.Parse("", &runtimeConfig)
 	if err != nil {
@@ -33,23 +26,24 @@ func main() {
 			fmt.Println(help)
 			os.Exit(1)
 		}
-		log.Panicf("parsing runtime configuration: %v", err)
+		panic("parsing runtime configuration" + err.Error())
 	}
+	log.Configure(runtimeConfig.Production)
 
 	c := make(chan os.Signal, 2)
 	signal.Notify(c, os.Interrupt)
 	sv, err := server.New(&runtimeConfig)
 	if err != nil {
-		log.Fatalf("error setting up server: %v", err)
+		log.Fatal("error setting up server", "error", err)
 	}
 	wg := &sync.WaitGroup{}
 	wg.Add(1)
 	go func() {
 		defer wg.Done()
 		sig := <-c
-		log.Printf("signal captured: %v", sig)
+		log.Info("signal captured", "sig", sig)
 		<-sv.Stop()
-		slog.Debug("server stopped")
+		log.Debug("server stopped")
 	}()
 
 	sErr := make(chan error)
@@ -59,13 +53,13 @@ func main() {
 		sErr <- sv.Start()
 	}()
 	if !runtimeConfig.InDevServer {
-		log.Printf("server listening on %s", sv.Addr)
+		log.Info("server listening", "address", sv.Addr)
 	}
 
 	err = <-sErr
 	if err != nil {
 		// Error starting or closing listener:
-		log.Fatalf("error: %v", err)
+		log.Fatal("error", "error", err)
 	}
 	wg.Wait()
 }
diff --git a/go.mod b/go.mod
index 4887a56..a369312 100644
--- a/go.mod
+++ b/go.mod
@@ -16,6 +16,7 @@ require (
 	github.com/fatih/structtag v1.2.0
 	github.com/getsentry/sentry-go v0.27.0
 	github.com/gohugoio/hugo v0.125.7
+	github.com/nkmr-jp/zl v1.4.3
 	github.com/otiai10/copy v1.14.0
 	github.com/pkg/errors v0.9.1
 	github.com/shengyanli1982/law v0.1.15
@@ -26,24 +27,34 @@ require (
 replace github.com/a-h/htmlformat => github.com/alanpearce/htmlformat v0.0.0-20240425000139-1244374b2562
 
 require (
+	github.com/Code-Hex/dd v1.1.0 // indirect
 	github.com/andybalholm/cascadia v1.3.2 // indirect
 	github.com/bep/godartsass v1.2.0 // indirect
 	github.com/bep/godartsass/v2 v2.0.0 // indirect
 	github.com/bep/golibsass v1.1.1 // indirect
 	github.com/cli/safeexec v1.0.1 // indirect
+	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/fsnotify/fsnotify v1.7.0 // indirect
 	github.com/gobwas/glob v0.2.3 // indirect
 	github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect
+	github.com/logrusorgru/aurora/v4 v4.0.0 // indirect
 	github.com/mattn/go-isatty v0.0.20 // indirect
 	github.com/mitchellh/hashstructure v1.1.0 // indirect
 	github.com/pelletier/go-toml/v2 v2.2.2 // indirect
+	github.com/samber/lo v1.39.0 // indirect
 	github.com/spf13/afero v1.11.0 // indirect
 	github.com/spf13/cast v1.6.0 // indirect
+	github.com/sykesm/zap-logfmt v0.0.4 // indirect
 	github.com/tdewolff/parse/v2 v2.7.14 // indirect
+	github.com/thessem/zap-prettyconsole v0.4.0 // indirect
+	go.uber.org/multierr v1.11.0 // indirect
+	go.uber.org/zap v1.27.0 // indirect
+	golang.org/x/exp v0.0.0-20240506185415-9bf2ced13842 // indirect
 	golang.org/x/sync v0.7.0 // indirect
 	golang.org/x/sys v0.20.0 // indirect
 	golang.org/x/text v0.15.0 // indirect
 	google.golang.org/protobuf v1.34.1 // indirect
 	gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c // indirect
+	gopkg.in/natefinch/lumberjack.v2 v2.2.1 // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect
 )
diff --git a/go.sum b/go.sum
index c72aa1c..81c549f 100644
--- a/go.sum
+++ b/go.sum
@@ -4,6 +4,8 @@ github.com/BurntSushi/locker v0.0.0-20171006230638-a6e239ea1c69/go.mod h1:L1AbZd
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/BurntSushi/toml v1.3.2 h1:o7IhLm0Msx3BaB+n3Ag7L8EVlByGnpq14C4YWiu/gL8=
 github.com/BurntSushi/toml v1.3.2/go.mod h1:CxXYINrC8qIiEnFrOxCa7Jy5BFHlXnUU2pbicEuybxQ=
+github.com/Code-Hex/dd v1.1.0 h1:VEtTThnS9l7WhpKUIpdcWaf0B8Vp0LeeSEsxA1DZseI=
+github.com/Code-Hex/dd v1.1.0/go.mod h1:VaMyo/YjTJ3d4qm/bgtrUkT2w+aYwJ07Y7eCWyrJr1w=
 github.com/PuerkitoBio/goquery v1.9.2 h1:4/wZksC3KgkQw7SQgkKotmKljk0M6V8TUvA8Wb4yPeE=
 github.com/PuerkitoBio/goquery v1.9.2/go.mod h1:GHPCaP0ODyyxqcNoFGYlAprUFH81NuRPd0GX3Zu2Mvk=
 github.com/adrg/frontmatter v0.2.0 h1:/DgnNe82o03riBd1S+ZDjd43wAmC6W35q67NHeLkPd4=
@@ -127,6 +129,7 @@ github.com/google/go-cmp v0.5.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/
 github.com/google/go-cmp v0.5.7/go.mod h1:n+brtR0CgQNWTVd5ZUFpTBC8YFBDLK/h/bpaJ8/DtOE=
 github.com/google/go-cmp v0.6.0 h1:ofyhxvXcZhMsU5ulbFiLKl/XBFqE1GSq7atu8tAmTRI=
 github.com/google/go-cmp v0.6.0/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
+github.com/google/renameio v0.1.0/go.mod h1:KWCgfxg9yswjAJkECMjeO8J8rahYeXnNhOm40UhjYkI=
 github.com/hairyhenderson/go-codeowners v0.4.0 h1:Wx/tRXb07sCyHeC8mXfio710Iu35uAy5KYiBdLHdv4Q=
 github.com/hairyhenderson/go-codeowners v0.4.0/go.mod h1:iJgZeCt+W/GzXo5uchFCqvVHZY2T4TAIpvuVlKVkLxc=
 github.com/hashicorp/golang-lru/v2 v2.0.7 h1:a+bsQ5rvGLjzHuww6tVxozPZFVghXaHOwFs4luLUK2k=
@@ -137,6 +140,7 @@ github.com/jdkato/prose v1.2.1 h1:Fp3UnJmLVISmlc57BgKUzdjr0lOtjqTZicL3PaYy6cU=
 github.com/jdkato/prose v1.2.1/go.mod h1:AiRHgVagnEx2JbQRQowVBKjG0bcs/vtkGCH1dYAL1rA=
 github.com/josharian/intern v1.0.0 h1:vlS4z54oSdjm0bgjRigI+G1HpF+tI+9rE5LLzOg8HmY=
 github.com/josharian/intern v1.0.0/go.mod h1:5DoeVV0s6jJacbCEi61lwdGj/aVlrQvzHFFd8Hwg//Y=
+github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck=
 github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
 github.com/kr/pretty v0.2.1/go.mod h1:ipq/a2n7PKx3OHsz4KJII5eveXtPO4qwEXGdVfWzfnI=
 github.com/kr/pretty v0.3.0/go.mod h1:640gp4NfQd8pI5XOwp5fnNeVWj67G7CFk/SaSQn7NBk=
@@ -148,6 +152,8 @@ github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
 github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
 github.com/kyokomi/emoji/v2 v2.2.12 h1:sSVA5nH9ebR3Zji1o31wu3yOwD1zKXQA2z0zUyeit60=
 github.com/kyokomi/emoji/v2 v2.2.12/go.mod h1:JUcn42DTdsXJo1SWanHh4HKDEyPaR5CqkmoirZZP9qE=
+github.com/logrusorgru/aurora/v4 v4.0.0 h1:sRjfPpun/63iADiSvGGjgA1cAYegEWMPCJdUpJYn9JA=
+github.com/logrusorgru/aurora/v4 v4.0.0/go.mod h1:lP0iIa2nrnT/qoFXcOZSrZQpJ1o6n2CUf/hyHi2Q4ZQ=
 github.com/mailru/easyjson v0.7.7 h1:UGYAvKxe3sBsEDzO8ZeWOSlIQfWFlxbzLZe7hwFURr0=
 github.com/mailru/easyjson v0.7.7/go.mod h1:xzfreul335JAWq5oZzymOObrkdz5UnU4kGfJJLY9Nlc=
 github.com/makeworld-the-better-one/dither/v2 v2.4.0 h1:Az/dYXiTcwcRSe59Hzw4RI1rSnAZns+1msaCXetrMFE=
@@ -170,6 +176,8 @@ github.com/muesli/smartcrop v0.3.0 h1:JTlSkmxWg/oQ1TcLDoypuirdE8Y/jzNirQeLkxpA6O
 github.com/muesli/smartcrop v0.3.0/go.mod h1:i2fCI/UorTfgEpPPLWiFBv4pye+YAG78RwcQLUkocpI=
 github.com/niklasfasching/go-org v1.7.0 h1:vyMdcMWWTe/XmANk19F4k8XGBYg0GQ/gJGMimOjGMek=
 github.com/niklasfasching/go-org v1.7.0/go.mod h1:WuVm4d45oePiE0eX25GqTDQIt/qPW1T9DGkRscqLW5o=
+github.com/nkmr-jp/zl v1.4.3 h1:fzjeG+OdNWW5O9Yn3VrzXWTeiSqDFbSzJ77H8yCYNa4=
+github.com/nkmr-jp/zl v1.4.3/go.mod h1:3XXgnW5Lj+6xfcowgLWn1JwUhDc+MSDIQuQLrjeS8oU=
 github.com/olekukonko/tablewriter v0.0.5 h1:P2Ga83D34wi1o9J6Wh1mRuqd4mF/x/lgBS7N7AbDhec=
 github.com/olekukonko/tablewriter v0.0.5/go.mod h1:hPp6KlRPjbx+hW8ykQs1w3UBbZlj6HuIJcUGPhkA7kY=
 github.com/otiai10/copy v1.14.0 h1:dCI/t1iTdYGtkvCuBG2BgR6KZa83PTclw4U5n2wAllU=
@@ -184,16 +192,20 @@ github.com/perimeterx/marshmallow v1.1.5 h1:a2LALqQ1BlHM8PZblsDdidgv1mWi1DgC2UmX
 github.com/perimeterx/marshmallow v1.1.5/go.mod h1:dsXbUu8CRzfYP5a87xpp0xq9S3u0Vchtcl8we9tYaXw=
 github.com/pingcap/errors v0.11.4 h1:lFuQV/oaUMGcD2tqt+01ROSmJs75VG1ToEOkZIZ4nE4=
 github.com/pingcap/errors v0.11.4/go.mod h1:Oi8TUi2kEtXXLMJk9l1cGmz20kV3TaQ0usTwv5KuLY8=
+github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
 github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/prometheus/client_model v0.0.0-20190812154241-14fe0d1b01d4/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=
+github.com/rogpeppe/go-internal v1.3.0/go.mod h1:M8bDsm7K2OlrFYOpmOWEs/qY81heoFRclV5y23lUDJ4=
 github.com/rogpeppe/go-internal v1.6.1/go.mod h1:xXDCJY+GAPziupqXw64V24skbSoqbTEfhy4qGm1nDQc=
 github.com/rogpeppe/go-internal v1.12.0 h1:exVL4IDcn6na9z1rAb56Vxr+CgyK3nn3O+epU5NdKM8=
 github.com/rogpeppe/go-internal v1.12.0/go.mod h1:E+RYuTGaKKdloAfM02xzb0FW3Paa99yedzYV+kq4uf4=
 github.com/rwcarlsen/goexif v0.0.0-20190401172101-9e8deecbddbd h1:CmH9+J6ZSsIjUK3dcGsnCnO41eRBOnY12zwkn5qVwgc=
 github.com/rwcarlsen/goexif v0.0.0-20190401172101-9e8deecbddbd/go.mod h1:hPqNNc0+uJM6H+SuU8sEs5K5IQeKccPqeSjfgcKGgPk=
+github.com/samber/lo v1.39.0 h1:4gTz1wUhNYLhFSKl6O+8peW0v2F4BCY034GRpU9WnuA=
+github.com/samber/lo v1.39.0/go.mod h1:+m/ZKRl6ClXCE2Lgf3MsQlWfh4bn1bz6CXEOxnEXnEA=
 github.com/shengyanli1982/law v0.1.15 h1:puSn0Saa+0ptjszspycfWHPSu0D3kBcU3oEeW83MRIc=
 github.com/shengyanli1982/law v0.1.15/go.mod h1:20k9YnOTwilUB4X5Z4S7TIX5Ek1Ok4xfx8V8ZxIWlyM=
 github.com/spf13/afero v1.11.0 h1:WJQKhtpdm3v2IzqG8VMqrr6Rf3UYpEF239Jy9wNepM8=
@@ -204,32 +216,51 @@ github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+
 github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
 github.com/stretchr/objx v0.5.0/go.mod h1:Yh+to48EsGEfYuaHDzXPcE3xhTkx73EhmCGUpEOglKo=
 github.com/stretchr/objx v0.5.2/go.mod h1:FRsXN1f5AsAjCGJKqEizvkpNtU+EGNCLh3NxZ/8L+MA=
+github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
+github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
 github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
 github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
 github.com/stretchr/testify v1.8.4/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
 github.com/stretchr/testify v1.9.0 h1:HtqpIVDClZ4nwg75+f6Lvsy/wHu+3BoSGCbBAcpTsTg=
 github.com/stretchr/testify v1.9.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
+github.com/sykesm/zap-logfmt v0.0.4 h1:U2WzRvmIWG1wDLCFY3sz8UeEmsdHQjHFNlIdmroVFaI=
+github.com/sykesm/zap-logfmt v0.0.4/go.mod h1:AuBd9xQjAe3URrWT1BBDk2v2onAZHkZkWRMiYZXiZWA=
 github.com/tdewolff/minify/v2 v2.20.20 h1:vhULb+VsW2twkplgsawAoUY957efb+EdiZ7zu5fUhhk=
 github.com/tdewolff/minify/v2 v2.20.20/go.mod h1:GYaLXFpIIwsX99apQHXfGdISUdlA98wmaoWxjT9C37k=
 github.com/tdewolff/parse/v2 v2.7.14 h1:100KJ+QAO3PpMb3uUjzEU/NpmCdbBYz6KPmCIAfWpR8=
 github.com/tdewolff/parse/v2 v2.7.14/go.mod h1:3FbJWZp3XT9OWVN3Hmfp0p/a08v4h8J9W1aghka0soA=
 github.com/tdewolff/test v1.0.11-0.20231101010635-f1265d231d52 h1:gAQliwn+zJrkjAHVcBEYW/RFvd2St4yYimisvozAYlA=
 github.com/tdewolff/test v1.0.11-0.20231101010635-f1265d231d52/go.mod h1:6DAvZliBAAnD7rhVgwaM7DE5/d9NMOAJ09SqYqeK4QE=
+github.com/thessem/zap-prettyconsole v0.4.0 h1:905GshsxOSVz44hm0mEr00Dk/gjf1Aoq3tkW1o2kKuw=
+github.com/thessem/zap-prettyconsole v0.4.0/go.mod h1:6bRZpKuje/vxEMEAlF22qPHkcO8kfJSrL/0NALxuZoQ=
 github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
 github.com/yuin/goldmark v1.7.1 h1:3bajkSilaCbjdKVsKdZjZCLBNPL9pYzrCakKaf4U49U=
 github.com/yuin/goldmark v1.7.1/go.mod h1:uzxRWxtg69N339t3louHJ7+O03ezfj6PlliRlaOzY1E=
 github.com/yuin/goldmark-emoji v1.0.2 h1:c/RgTShNgHTtc6xdz2KKI74jJr6rWi7FPgnP9GAsO5s=
 github.com/yuin/goldmark-emoji v1.0.2/go.mod h1:RhP/RWpexdp+KHs7ghKnifRoIs/Bq4nDS7tRbCkOwKY=
+go.uber.org/atomic v1.5.0/go.mod h1:sABNBOSYdrvTF6hTgEIbc7YasKWGhgEQZyfxyTvoXHQ=
+go.uber.org/goleak v1.3.0 h1:2K3zAYmnTNqV73imy9J1T3WC+gmCePx2hEGkimedGto=
+go.uber.org/goleak v1.3.0/go.mod h1:CoHD4mav9JJNrW/WLlf7HGZPjdw8EucARQHekz1X6bE=
+go.uber.org/multierr v1.3.0/go.mod h1:VgVr7evmIr6uPjLBxg28wmKNXyqE9akIJ5XnfpiKl+4=
+go.uber.org/multierr v1.11.0 h1:blXXJkSxSSfBVBlC76pxqeO+LN3aDfLQo+309xJstO0=
+go.uber.org/multierr v1.11.0/go.mod h1:20+QtiLqy0Nd6FdQB9TLXag12DsQkrbs3htMFfDN80Y=
+go.uber.org/tools v0.0.0-20190618225709-2cfd321de3ee/go.mod h1:vJERXedbb3MVM5f9Ejo0C68/HhF8uaILCdgjnY+goOA=
+go.uber.org/zap v1.12.0/go.mod h1:zwrFLgMcdUuIBviXEYEH1YKNaOBnKXsx2IPda5bBwHM=
+go.uber.org/zap v1.27.0 h1:aJMhYGrd5QSmlpLMr2MftRKl7t8J8PTZPA732ud/XR8=
+go.uber.org/zap v1.27.0/go.mod h1:GB2qFLM7cTU87MWRP2mPIjqfIDnGu+VIO4V/SdhGo2E=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
+golang.org/x/crypto v0.0.0-20190510104115-cbcb75029529/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
 golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
-golang.org/x/exp v0.0.0-20221031165847-c99f073a8326 h1:QfTh0HpN6hlw6D3vu8DAwC8pBIwikq0AI1evdm+FksE=
-golang.org/x/exp v0.0.0-20221031165847-c99f073a8326/go.mod h1:CxIveKay+FTh1D0yPZemJVgC/95VzuuOLq5Qi4xnoYc=
+golang.org/x/exp v0.0.0-20240506185415-9bf2ced13842 h1:vr/HnozRka3pE4EsMEg1lgkXJkTFJCVUX+S/ZT6wYzM=
+golang.org/x/exp v0.0.0-20240506185415-9bf2ced13842/go.mod h1:XtvwrStGgqGPLc4cjQfWqZHG1YFdYs6swckp8vpsjnc=
 golang.org/x/image v0.15.0 h1:kOELfmgrmJlw4Cdb7g/QGuB3CvDrXbqEIww/pNtNBm8=
 golang.org/x/image v0.15.0/go.mod h1:HUYqC05R2ZcZ3ejNQsIHQDQiwWM4JBqmm6MKANTp4LE=
 golang.org/x/lint v0.0.0-20181026193005-c67002cb31c3/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE=
 golang.org/x/lint v0.0.0-20190227174305-5b3e6a55c961/go.mod h1:wehouNa3lNwaWXcvxsM5YxQ5yQlVC4a0KAMCusXpPoU=
 golang.org/x/lint v0.0.0-20190313153728-d0100b6bd8b3/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc=
+golang.org/x/lint v0.0.0-20190930215403-16217165b5de/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc=
+golang.org/x/mod v0.0.0-20190513183733-4bf6d317e70e/go.mod h1:mXi4GBBbnImb6dmsKGUJ2LatrhH/nqhxcFungHvyanc=
 golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
 golang.org/x/mod v0.8.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
 golang.org/x/mod v0.17.0 h1:zY54UmvipHiNd+pm+m0x9KhZ9hl1/7QNMyxXbc6ICqA=
@@ -238,6 +269,7 @@ golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73r
 golang.org/x/net v0.0.0-20180826012351-8a410e7b638d/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20190213061140-3a22650c66bd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20190311183353-d8887717615a/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
+golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
 golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
@@ -256,6 +288,7 @@ golang.org/x/sync v0.7.0 h1:YsImfSBoP9QPYL0xyKJPq0gcaJdG3rInoqxTWbfQu9M=
 golang.org/x/sync v0.7.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
 golang.org/x/sys v0.0.0-20180830151530-49385e6e1522/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
@@ -281,11 +314,14 @@ golang.org/x/tools v0.0.0-20190114222345-bf090417da8b/go.mod h1:n7NCudcB/nEzxVGm
 golang.org/x/tools v0.0.0-20190226205152-f727befe758c/go.mod h1:9Yl7xja0Znq3iFh3HoIrodX9oNMXvdceNzlUR8zjMvY=
 golang.org/x/tools v0.0.0-20190311212946-11955173bddd/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
 golang.org/x/tools v0.0.0-20190524140312-2c0ae7006135/go.mod h1:RgjU9mgBXZiqYHBnxXauZ1Gv1EHHAz9KjViQ78xBX0Q=
+golang.org/x/tools v0.0.0-20190621195816-6e04913cbbac/go.mod h1:/rFqwRUd4F7ZHNgwSSTFct+R/Kf4OFW1sUzUTQQTgfc=
+golang.org/x/tools v0.0.0-20191029041327-9cc4af7d6b2c/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
+golang.org/x/tools v0.0.0-20191029190741-b9c20aec41a5/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
 golang.org/x/tools v0.6.0/go.mod h1:Xwgl3UAJ/d3gWutnCtw505GrjyAbvKui8lOU390QaIU=
-golang.org/x/tools v0.20.0 h1:hz/CVckiOxybQvFw6h7b/q80NTr9IUQb4s1IIzW7KNY=
-golang.org/x/tools v0.20.0/go.mod h1:WvitBU7JJf6A4jOdg4S1tviW9bhUxkgeCui/0JHctQg=
+golang.org/x/tools v0.21.0 h1:qc0xYgIbsSDt9EyWz05J5wfa7LOVW0YTLOXrqdLAWIw=
+golang.org/x/tools v0.21.0/go.mod h1:aiJjzUbINMkxbQROHiO6hDPo2LHcIPhhQsa9DLh0yGk=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM=
@@ -311,6 +347,9 @@ gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8
 gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk=
 gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q=
 gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
+gopkg.in/natefinch/lumberjack.v2 v2.2.1 h1:bBRl1b0OH9s/DuPhuXpNl+VtCaJXFZ5/uEFST95x9zc=
+gopkg.in/natefinch/lumberjack.v2 v2.2.1/go.mod h1:YD8tP3GAjkrDg1eZH7EGmyESg/lsYskCTPBJVb9jqSc=
+gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
 gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
@@ -319,3 +358,4 @@ gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
+honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg=
diff --git a/internal/builder/builder.go b/internal/builder/builder.go
index cb3b670..a8205a3 100644
--- a/internal/builder/builder.go
+++ b/internal/builder/builder.go
@@ -3,13 +3,13 @@ package builder
 import (
 	"fmt"
 	"io"
-	"log/slog"
 	"net/url"
 	"os"
 	"path"
 	"slices"
 
 	"website/internal/config"
+	"website/internal/log"
 
 	cp "github.com/otiai10/copy"
 	"github.com/pkg/errors"
@@ -27,7 +27,7 @@ func mkdirp(dirs ...string) error {
 }
 
 func outputToFile(output io.Reader, filename ...string) error {
-	slog.Debug(fmt.Sprintf("outputting file %s", path.Join(filename...)))
+	log.Debug("outputting file", "filename", path.Join(filename...))
 	file, err := os.OpenFile(path.Join(filename...), os.O_WRONLY|os.O_CREATE, 0644)
 	if err != nil {
 		return errors.WithMessage(err, "could not open output file")
@@ -41,7 +41,7 @@ func outputToFile(output io.Reader, filename ...string) error {
 }
 
 func build(outDir string, config config.Config) error {
-	slog.Debug(fmt.Sprintf("output directory %s", outDir))
+	log.Debug("output", "dir", outDir)
 	privateDir := path.Join(outDir, "private")
 	if err := mkdirp(privateDir); err != nil {
 		return errors.WithMessage(err, "could not create private directory")
@@ -62,7 +62,7 @@ func build(outDir string, config config.Config) error {
 	if err := mkdirp(publicDir, "post"); err != nil {
 		return errors.WithMessage(err, "could not create post output directory")
 	}
-	slog.Debug("reading posts")
+	log.Debug("reading posts")
 	posts, tags, err := readPosts("content", "post", publicDir)
 	if err != nil {
 		return err
@@ -72,7 +72,7 @@ func build(outDir string, config config.Config) error {
 		if err := mkdirp(publicDir, "post", post.Basename); err != nil {
 			return errors.WithMessage(err, "could not create directory for post")
 		}
-		slog.Debug("rendering post", "post", post.Basename)
+		log.Debug("rendering post", "post", post.Basename)
 		output, err := renderPost(post, config)
 		if err != nil {
 			return errors.WithMessagef(err, "could not render post %s", post.Input)
@@ -85,7 +85,7 @@ func build(outDir string, config config.Config) error {
 	if err := mkdirp(publicDir, "tags"); err != nil {
 		return errors.WithMessage(err, "could not create directory for tags")
 	}
-	slog.Debug("rendering tags list")
+	log.Debug("rendering tags list")
 	output, err := renderTags(tags, config, "/tags")
 	if err != nil {
 		return errors.WithMessage(err, "could not render tags")
@@ -104,7 +104,7 @@ func build(outDir string, config config.Config) error {
 		if err := mkdirp(publicDir, "tags", tag); err != nil {
 			return errors.WithMessage(err, "could not create directory")
 		}
-		slog.Debug("rendering tags page", "tag", tag)
+		log.Debug("rendering tags page", "tag", tag)
 		output, err := renderListPage(tag, config, matchingPosts, "/tags/"+tag)
 		if err != nil {
 			return errors.WithMessage(err, "could not render tag page")
@@ -113,7 +113,7 @@ func build(outDir string, config config.Config) error {
 			return err
 		}
 
-		slog.Debug("rendering tags feed", "tag", tag)
+		log.Debug("rendering tags feed", "tag", tag)
 		output, err = renderFeed(
 			fmt.Sprintf("%s - %s", config.Title, tag),
 			config,
@@ -128,7 +128,7 @@ func build(outDir string, config config.Config) error {
 		}
 	}
 
-	slog.Debug("rendering list page")
+	log.Debug("rendering list page")
 	listPage, err := renderListPage("", config, posts, "/post")
 	if err != nil {
 		return errors.WithMessage(err, "could not render list page")
@@ -137,7 +137,7 @@ func build(outDir string, config config.Config) error {
 		return err
 	}
 
-	slog.Debug("rendering feed")
+	log.Debug("rendering feed")
 	feed, err := renderFeed(config.Title, config, posts, "feed")
 	if err != nil {
 		return errors.WithMessage(err, "could not render feed")
@@ -146,7 +146,7 @@ func build(outDir string, config config.Config) error {
 		return err
 	}
 
-	slog.Debug("rendering feed styles")
+	log.Debug("rendering feed styles")
 	feedStyles, err := renderFeedStyles()
 	if err != nil {
 		return errors.WithMessage(err, "could not render feed styles")
@@ -155,7 +155,7 @@ func build(outDir string, config config.Config) error {
 		return err
 	}
 
-	slog.Debug("rendering homepage")
+	log.Debug("rendering homepage")
 	homePage, err := renderHomepage(config, posts, "/")
 	if err != nil {
 		return errors.WithMessage(err, "could not render homepage")
@@ -164,7 +164,7 @@ func build(outDir string, config config.Config) error {
 		return err
 	}
 
-	slog.Debug("rendering 404 page")
+	log.Debug("rendering 404 page")
 	notFound, err := render404(config, "/404.html")
 	if err != nil {
 		return errors.WithMessage(err, "could not render 404 page")
diff --git a/internal/builder/posts.go b/internal/builder/posts.go
index a4526e4..954e259 100644
--- a/internal/builder/posts.go
+++ b/internal/builder/posts.go
@@ -2,13 +2,13 @@ package builder
 
 import (
 	"bytes"
-	"log/slog"
 	"os"
 	"path"
 	"path/filepath"
 	"slices"
 	"strings"
 	"time"
+	"website/internal/log"
 
 	"github.com/adrg/frontmatter"
 	mapset "github.com/deckarep/golang-set/v2"
@@ -91,7 +91,7 @@ func readPosts(root string, inputDir string, outputDir string) ([]Post, Tags, er
 		if !f.IsDir() && path.Ext(pathFromRoot) == ".md" {
 			output := outputReplacer.Replace(pathFromRoot)
 			url := urlReplacer.Replace(pathFromRoot)
-			slog.Debug("reading post", "post", pathFromRoot)
+			log.Debug("reading post", "post", pathFromRoot)
 			matter, content, err := getPost(pathFromRoot)
 			if err != nil {
 				return nil, nil, err
@@ -101,7 +101,7 @@ func readPosts(root string, inputDir string, outputDir string) ([]Post, Tags, er
 				tags.Add(strings.ToLower(tag))
 			}
 
-			slog.Debug("rendering markdown in post", "post", pathFromRoot)
+			log.Debug("rendering markdown in post", "post", pathFromRoot)
 			html, err := renderMarkdown(content)
 			if err != nil {
 				return nil, nil, err
diff --git a/internal/builder/template.go b/internal/builder/template.go
index 5bd990e..c63e1c2 100644
--- a/internal/builder/template.go
+++ b/internal/builder/template.go
@@ -4,7 +4,6 @@ import (
 	"encoding/xml"
 	"fmt"
 	"io"
-	"log/slog"
 	"net/url"
 	"os"
 	"strings"
@@ -12,6 +11,7 @@ import (
 	"time"
 	"website/internal/atom"
 	"website/internal/config"
+	"website/internal/log"
 
 	"github.com/PuerkitoBio/goquery"
 	"github.com/a-h/htmlformat"
@@ -391,12 +391,12 @@ func renderHTML(doc *goquery.Document) io.Reader {
 	go func() {
 		_, err := w.Write([]byte("<!doctype html>\n"))
 		if err != nil {
-			slog.Error("error writing doctype")
+			log.Error("error writing doctype", "error", err)
 			w.CloseWithError(err)
 		}
 		err = htmlformat.Nodes(w, []*html.Node{doc.Children().Get(0)})
 		if err != nil {
-			slog.Error("error rendering html", "error", err)
+			log.Error("error rendering html", "error", err)
 			w.CloseWithError(err)
 			return
 		}
diff --git a/internal/config/config.go b/internal/config/config.go
index 47422e7..063f549 100644
--- a/internal/config/config.go
+++ b/internal/config/config.go
@@ -2,8 +2,8 @@ package config
 
 import (
 	"io/fs"
-	"log/slog"
 	"net/url"
+	"website/internal/log"
 
 	"github.com/BurntSushi/toml"
 	"github.com/pkg/errors"
@@ -47,7 +47,7 @@ type Config struct {
 
 func GetConfig() (*Config, error) {
 	config := Config{}
-	slog.Debug("reading config.toml")
+	log.Debug("reading config.toml")
 	_, err := toml.DecodeFile("config.toml", &config)
 	if err != nil {
 		var pathError *fs.PathError
diff --git a/internal/log/log.go b/internal/log/log.go
new file mode 100644
index 0000000..e16d7bb
--- /dev/null
+++ b/internal/log/log.go
@@ -0,0 +1,48 @@
+package log
+
+import (
+	"os"
+
+	zaplogfmt "github.com/sykesm/zap-logfmt"
+	prettyconsole "github.com/thessem/zap-prettyconsole"
+	"go.uber.org/zap"
+	"go.uber.org/zap/zapcore"
+)
+
+var logger *zap.SugaredLogger
+
+func DPanic(msg string, rest ...any) {
+	logger.DPanicw(msg, rest...)
+}
+func Debug(msg string, rest ...any) {
+	logger.Debugw(msg, rest...)
+}
+func Info(msg string, rest ...any) {
+	logger.Infow(msg, rest...)
+}
+func Warn(msg string, rest ...any) {
+	logger.Warnw(msg, rest...)
+}
+func Error(msg string, rest ...any) {
+	logger.Errorw(msg, rest...)
+}
+func Panic(msg string, rest ...any) {
+	logger.Panicw(msg, rest...)
+}
+func Fatal(msg string, rest ...any) {
+	logger.Fatalw(msg, rest...)
+}
+
+func Configure(isProduction bool) {
+	var l *zap.Logger
+	if isProduction {
+		cfg := zap.NewProductionEncoderConfig()
+		cfg.TimeKey = ""
+		l = zap.New(zapcore.NewCore(zaplogfmt.NewEncoder(cfg), os.Stderr, zapcore.InfoLevel))
+	} else {
+		cfg := prettyconsole.NewConfig()
+		cfg.EncoderConfig.TimeKey = ""
+		l = zap.Must(cfg.Build())
+	}
+	logger = l.WithOptions(zap.AddCallerSkip(1)).Sugar()
+}
diff --git a/internal/server/filemap.go b/internal/server/filemap.go
index 466db49..6130e65 100644
--- a/internal/server/filemap.go
+++ b/internal/server/filemap.go
@@ -5,12 +5,12 @@ import (
 	"hash/fnv"
 	"io"
 	"io/fs"
-	"log"
-	"log/slog"
 	"os"
 	"path/filepath"
 	"strings"
 
+	"website/internal/log"
+
 	"github.com/pkg/errors"
 )
 
@@ -36,7 +36,7 @@ func hashFile(filename string) (string, error) {
 
 func registerFile(urlpath string, filepath string) error {
 	if files[urlpath] != (File{}) {
-		log.Printf("registerFile called with duplicate file, urlPath: %s", urlpath)
+		log.Info("registerFile called with duplicate file", "url_path", urlpath)
 		return nil
 	}
 	hash, err := hashFile(filepath)
@@ -61,7 +61,7 @@ func registerContentFiles(root string) error {
 		}
 		urlPath, _ := strings.CutSuffix(relPath, "index.html")
 		if !f.IsDir() {
-			slog.Debug("registering file", "urlpath", "/"+urlPath)
+			log.Debug("registering file", "urlpath", "/"+urlPath)
 			return registerFile("/"+urlPath, filePath)
 		}
 		return nil
diff --git a/internal/server/server.go b/internal/server/server.go
index cbee989..62e32d5 100644
--- a/internal/server/server.go
+++ b/internal/server/server.go
@@ -4,8 +4,6 @@ import (
 	"context"
 	"fmt"
 	"io"
-	"log"
-	"log/slog"
 	"mime"
 	"net"
 	"net/http"
@@ -16,6 +14,7 @@ import (
 	"time"
 
 	cfg "website/internal/config"
+	"website/internal/log"
 
 	"github.com/getsentry/sentry-go"
 	sentryhttp "github.com/getsentry/sentry-go/http"
@@ -89,7 +88,7 @@ func (fn webHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	defer func() {
 		if fail := recover(); fail != nil {
 			w.WriteHeader(http.StatusInternalServerError)
-			slog.Error("runtime panic!", "error", fail)
+			log.Error("runtime panic!", "error", fail)
 		}
 	}()
 	w.Header().Set("Server", fmt.Sprintf("website (%s)", ShortSHA))
@@ -111,7 +110,7 @@ var newMIMEs = map[string]string{
 func fixupMIMETypes() {
 	for ext, newType := range newMIMEs {
 		if err := mime.AddExtensionType(ext, newType); err != nil {
-			slog.Error("could not update mime type", "ext", ext, "mime", newType)
+			log.Error("could not update mime type", "ext", ext, "mime", newType)
 		}
 	}
 }
@@ -134,7 +133,7 @@ func New(runtimeConfig *Config) (*Server, error) {
 	}
 
 	prefix := path.Join(runtimeConfig.Root, "public")
-	slog.Debug("registering content files", "prefix", prefix)
+	log.Debug("registering content files", "prefix", prefix)
 	err = registerContentFiles(prefix)
 	if err != nil {
 		return nil, errors.WithMessagef(err, "registering content files")
@@ -161,7 +160,7 @@ func New(runtimeConfig *Config) (*Server, error) {
 
 	top := http.NewServeMux()
 	mux := http.NewServeMux()
-	slog.Debug("binding main handler to", "host", runtimeConfig.BaseURL.Hostname()+"/")
+	log.Debug("binding main handler to", "host", runtimeConfig.BaseURL.Hostname()+"/")
 	mux.Handle(runtimeConfig.BaseURL.Hostname()+"/", webHandler(serveFile))
 
 	mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
@@ -205,19 +204,19 @@ func (s *Server) Start() error {
 }
 
 func (s *Server) Stop() chan struct{} {
-	slog.Debug("stop called")
+	log.Debug("stop called")
 
 	idleConnsClosed := make(chan struct{})
 
 	go func() {
-		slog.Debug("shutting down server")
+		log.Debug("shutting down server")
 		ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
 		defer cancel()
 		err := s.Server.Shutdown(ctx)
-		slog.Debug("server shut down")
+		log.Debug("server shut down")
 		if err != nil {
 			// Error from closing listeners, or context timeout:
-			log.Printf("HTTP server Shutdown: %v", err)
+			log.Warn("HTTP server Shutdown", "error", err)
 		}
 		close(idleConnsClosed)
 	}()