Maxim Lebedev
94e4691734
Embed templates must be used for internal pages, dashboard and other non-customizable views
188 lines
4.9 KiB
Go
188 lines
4.9 KiB
Go
//go:generate go install github.com/valyala/quicktemplate/qtc@latest
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//go:generate qtc -dir=web/template
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//go:generate go install golang.org/x/text/cmd/gotext@latest
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//go:generate gotext -srclang=en update -out=catalog_gen.go -lang=en,ru
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package main
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import (
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"context"
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"errors"
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"flag"
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"log"
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"net"
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"net/http"
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"os"
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"os/signal"
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"path/filepath"
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"runtime"
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"runtime/pprof"
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"syscall"
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"time"
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"github.com/caarlos0/env/v10"
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"golang.org/x/text/language"
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"golang.org/x/text/message"
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"source.toby3d.me/toby3d/home/internal/common"
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"source.toby3d.me/toby3d/home/internal/domain"
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pagefsrepo "source.toby3d.me/toby3d/home/internal/page/repository/fs"
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pageucase "source.toby3d.me/toby3d/home/internal/page/usecase"
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sitefsrepo "source.toby3d.me/toby3d/home/internal/site/repository/fs"
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siteucase "source.toby3d.me/toby3d/home/internal/site/usecase"
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themefsrepo "source.toby3d.me/toby3d/home/internal/theme/repository/fs"
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themeucase "source.toby3d.me/toby3d/home/internal/theme/usecase"
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)
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type Context struct {
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Site *domain.Site
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Page *domain.Page
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}
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var (
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config = new(domain.Config)
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logger = log.New(os.Stdout, "home\t", log.Lmsgprefix|log.LstdFlags|log.LUTC)
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)
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var cpuProfilePath, memProfilePath string
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func init() {
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flag.StringVar(&cpuProfilePath, "cpuprofile", "", "set path to saving CPU memory profile")
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flag.StringVar(&memProfilePath, "memprofile", "", "set path to saving pprof memory profile")
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flag.Parse()
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var err error
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if err = env.ParseWithOptions(config, env.Options{Prefix: "HOME_"}); err != nil {
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logger.Fatalln("cannot unmarshal configuration into domain:", err)
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}
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for _, dir := range []*string{
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&config.ContentDir,
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&config.ThemeDir,
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} {
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if *dir, err = filepath.Abs(filepath.Clean(*dir)); err != nil {
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logger.Fatalf("cannot format '%s' into absolute path: %s", *dir, err)
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}
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if _, err = os.Stat(*dir); err != nil {
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if errors.Is(err, os.ErrExist) {
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return
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}
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if !errors.Is(err, os.ErrNotExist) {
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logger.Fatalf("cannot check '%s' path: %v", *dir, err)
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}
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if err = os.MkdirAll(*dir, os.ModePerm); err != nil {
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logger.Fatalf("cannot create directory on '%s': %v", *dir, err)
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}
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}
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}
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}
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func main() {
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ctx := context.Background()
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matcher := language.NewMatcher(message.DefaultCatalog.Languages())
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contentDir := os.DirFS(config.ContentDir)
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themeDir := os.DirFS(config.ThemeDir)
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themes := themefsrepo.NewFileSystemThemeRepository(themeDir)
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themer := themeucase.NewThemeUseCase(themes)
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sites := sitefsrepo.NewFileSystemSiteRepository(contentDir)
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siter := siteucase.NewSiteUseCase(sites)
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pages := pagefsrepo.NewFileSystemPageRepository(contentDir)
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pager := pageucase.NewPageUseCase(pages)
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server := &http.Server{
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Addr: config.AddrPort().String(),
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Handler: http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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tags, _, err := language.ParseAcceptLanguage(r.Header.Get(common.HeaderAcceptLanguage))
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if err != nil || len(tags) == 0 {
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tags = append(tags, language.English)
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}
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lang, _, _ := matcher.Match(tags...)
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site, err := siter.Do(r.Context(), lang)
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if err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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page, err := pager.Do(r.Context(), lang, r.URL.Path)
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if err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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tpl, err := themer.Do(r.Context())
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if err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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w.Header().Set(common.HeaderContentType, common.MIMETextHTMLCharsetUTF8)
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if err = tpl.Execute(w, &Context{
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Site: site,
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Page: page,
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}); err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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}
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}),
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ErrorLog: logger,
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BaseContext: func(ln net.Listener) context.Context { return ctx },
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WriteTimeout: 500 * time.Millisecond,
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}
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done := make(chan os.Signal, 1)
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signal.Notify(done, os.Interrupt, syscall.SIGINT, syscall.SIGTERM)
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if cpuProfilePath != "" {
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cpuProfile, err := os.Create(cpuProfilePath)
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if err != nil {
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logger.Fatalln("could not create CPU profile:", err)
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}
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defer cpuProfile.Close()
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if err = pprof.StartCPUProfile(cpuProfile); err != nil {
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logger.Fatalln("could not start CPU profile:", err)
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}
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defer pprof.StopCPUProfile()
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}
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go func(server *http.Server) {
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logger.Printf("starting server on %d...", config.Port)
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if err := server.ListenAndServe(); err != nil {
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logger.Fatalln("cannot listen and serve server:", err)
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}
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}(server)
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<-done
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if err := server.Shutdown(ctx); err != nil {
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logger.Fatalln("failed shutdown server:", err)
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}
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if memProfilePath == "" {
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return
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}
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memProfile, err := os.Create(memProfilePath)
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if err != nil {
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logger.Fatalln("could not create memory profile:", err)
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}
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defer memProfile.Close()
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runtime.GC() // NOTE(toby3d): get up-to-date statistics
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if err = pprof.WriteHeapProfile(memProfile); err != nil {
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logger.Fatalln("could not write memory profile:", err)
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}
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}
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