Initial commit - read and serve markdown and static files

server.go

@@ -0,0 +1,78 @@
+package main
+
+import (
+	"fmt"
+	"io/ioutil"
+	"log"
+	"net/http"
+	"strings"
+)
+
+type server struct {
+	pages         []page
+	staticHandler http.Handler
+}
+
+func newServer() (*server, error) {
+	files, err := ioutil.ReadDir("posts/")
+
+	if err != nil {
+		return nil, err
+	}
+
+	s := &server{
+		pages:         make([]page, 0, len(files)),
+		staticHandler: http.FileServer(http.Dir("static/")),
+	}
+
+	for _, f := range files {
+		filename := f.Name()
+
+		if strings.HasSuffix(filename, ".md") {
+			s.pages = append(s.pages, page{slug: strings.TrimSuffix(filename, ".md")})
+		}
+	}
+
+	return s, nil
+}
+
+func (s *server) logRequest(req *http.Request) {
+	log.Printf("%s %s from %s", req.Method, req.URL.Path, req.RemoteAddr)
+}
+
+func (s *server) router(res http.ResponseWriter, req *http.Request) {
+	s.logRequest(req)
+	slug := req.URL.Path[1:]
+
+	if slug == "" {
+		s.homePage(res, req)
+		return
+	}
+
+	for _, p := range s.pages {
+		if p.slug == slug {
+			buf, err := p.render()
+
+			if err != nil {
+				res.WriteHeader(http.StatusInternalServerError)
+				res.Write([]byte("oh no"))
+			}
+
+			res.Write(buf)
+
+			return
+		}
+	}
+
+	s.staticHandler.ServeHTTP(res, req)
+}
+
+func (s *server) homePage(res http.ResponseWriter, req *http.Request) {
+	res.Header().Add("content-type", "text/html")
+
+	res.Write([]byte("<h1>blog</h1>"))
+
+	for _, p := range s.pages {
+		fmt.Fprintf(res, "<a href=\"/%s\">%s</a><br>", p.slug, p.slug)
+	}
+}