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package web
import (
"bytes"
"fmt"
"io"
"io/fs"
"net/http"
"path/filepath"
"strings"
"text/template"
"time"
"git.sr.ht/~a73x/home"
"github.com/yuin/goldmark"
"github.com/yuin/goldmark/parser"
"go.abhg.dev/goldmark/frontmatter"
"go.uber.org/zap"
)
type CommonData struct {
Posts []PostData
}
type PostData struct {
Title string
Path string
}
func GeneratePosts(mux *http.ServeMux) ([]PostData, error) {
converter := goldmark.New(
goldmark.WithExtensions(
&frontmatter.Extender{},
))
t, err := template.ParseFS(home.Content, "templates/layouts/*.html")
if err != nil {
return nil, fmt.Errorf("failed to parse layouts: %v", err)
}
final := []PostData{}
posts, err := fs.Glob(home.Content, "posts/*.md")
if err != nil {
return nil, fmt.Errorf("failed to glob posts: %v", err)
}
for _, post := range posts {
postName := filepath.Base(post)
postName = strings.Split(postName, ".")[0] + ".html"
// parse markdown
input, err := fs.ReadFile(home.Content, post)
if err != nil {
return nil, fmt.Errorf("failed to read post: %v", err)
}
var b bytes.Buffer
ctx := parser.NewContext()
if err := converter.Convert(input, &b, parser.WithContext(ctx)); err != nil {
return nil, err
}
d := frontmatter.Get(ctx)
var meta map[string]string
if err := d.Decode(&meta); err != nil {
return nil, err
}
foo, err := t.ParseFS(home.Content, "templates/post.html")
if err != nil {
return nil, fmt.Errorf("failed to parse post template: %v", err)
}
content, err := io.ReadAll(&b)
if err != nil {
return nil, fmt.Errorf("failed to read post template: %v", err)
}
type IPostData struct {
Title string
Post string
}
mux.HandleFunc("/posts/"+postName, func(w http.ResponseWriter, r *http.Request) {
if err := foo.ExecuteTemplate(w, "post.html", IPostData{
Title: meta["title"],
Post: string(content),
}); err != nil {
fmt.Println(err)
}
})
final = append(final, PostData{
Title: meta["title"],
Path: "posts/" + postName,
})
}
return final, nil
}
func loadTemplates(mux *http.ServeMux, data any) error {
tmplFiles, err := fs.ReadDir(home.Content, "templates")
if err != nil {
return fmt.Errorf("failed to parse template layouts")
}
for _, tmpl := range tmplFiles {
if tmpl.IsDir() {
continue
}
pt, err := template.ParseFS(home.Content, "templates/"+tmpl.Name(), "templates/layouts/*.html")
if err != nil {
return fmt.Errorf("failed to parse template "+tmpl.Name(), err)
}
if tmpl.Name() == "index.html" {
mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
pt.ExecuteTemplate(w, tmpl.Name(), data)
})
} else if tmpl.Name() == "page.html" {
continue
} else {
mux.HandleFunc("/"+tmpl.Name(), func(w http.ResponseWriter, r *http.Request) {
pt, err := template.ParseFS(home.Content, "templates/"+tmpl.Name(), "templates/layouts/*.html")
if err != nil {
fmt.Printf("failed to parse template "+tmpl.Name(), err)
}
pt.ExecuteTemplate(w, tmpl.Name(), data)
})
}
}
return nil
}
func New(logger *zap.Logger) (*http.Server, error) {
loggingMiddleware := func(next http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
start := time.Now()
next.ServeHTTP(w, r)
logger.Info("request received",
zap.String("url", r.URL.Path),
zap.String("method", r.Method),
zap.Duration("duration", time.Since(start)),
zap.String("user-agent", r.UserAgent()),
)
})
}
mux := http.NewServeMux()
postData, err := GeneratePosts(mux)
if err != nil {
return nil, fmt.Errorf("failed to generate posts: %v", err)
}
data := CommonData{
Posts: postData,
}
if err := loadTemplates(mux, data); err != nil {
return nil, fmt.Errorf("failed to parse templates: %v", err)
}
staticFs, err := fs.Sub(home.Content, "public/static")
if err != nil {
return nil, fmt.Errorf("failed to setup static handler: %v", err)
}
mux.Handle("GET /static", http.FileServer(http.FS(staticFs)))
server := http.Server{
Addr: ":8080",
Handler: loggingMiddleware(mux),
}
return &server, nil
}
|
