1 files changed, 52 insertions, 5 deletions
diff --git a/src/http.go b/src/http.go
index b0d5bcd..ac6f6da 100644
--- a/src/http.go
+++ b/src/http.go
@@ -10,6 +10,8 @@ import (
 	"net/http"
 	"slices"
 	"strconv"
+	"strings"
+	"time"
 
 	. "git.thomasvoss.com/euro-cash.eu/pkg/try"
 
@@ -34,7 +36,11 @@ func Run(port int) {
 	mux.Handle("GET /favicon.ico", fs)
 	mux.Handle("GET /fonts/", fs)
 	mux.Handle("GET /storage/", fs)
-	mux.Handle("GET /style.min.css", fs)
+	if Debugp {
+		mux.Handle("GET /style.css", fs)
+	} else {
+		mux.Handle("GET /style.min.css", fs)
+	}
 	mux.Handle("GET /coins/designs", mwareC(final))
 	mux.Handle("GET /coins/mintages", mwareM(final))
 	mux.Handle("GET /collecting/crh", mwareC(final))
@@ -57,7 +63,10 @@ func chain(xs ...middleware) middleware {
 
 func firstHandler(next http.Handler) http.Handler {
 	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-		ctx := context.WithValue(r.Context(), "td", &templateData{})
+		ctx := context.WithValue(r.Context(), "td", &templateData{
+			Debugp:   Debugp,
+			Printers: i18n.Printers,
+		})
 		next.ServeHTTP(w, r.WithContext(ctx))
 	})
 }
@@ -81,8 +90,9 @@ func finalHandler(w http.ResponseWriter, r *http.Request) {
 	   original page they came from. */
 	if path == "/language" {
 		http.SetCookie(w, &http.Cookie{
-			Name:  "redirect",
-			Value: cmp.Or(r.Referer(), "/"),
+			Name:    "redirect",
+			Value:   cmp.Or(r.Referer(), "/"),
+			Expires: time.Now().Add(24 * time.Hour),
 		})
 	}
 
@@ -101,15 +111,16 @@ func i18nHandler(next http.Handler) http.Handler {
 		}
 
 		td := r.Context().Value("td").(*templateData)
-		td.Printer = cmp.Or(p, i18n.DefaultPrinter)
 
 		if p == pZero {
+			td.Printer = bestFitLanguage(r.Header.Get("Accept-Language"))
 			http.SetCookie(w, &http.Cookie{
 				Name:  "redirect",
 				Value: r.URL.Path,
 			})
 			templates["/language"].Execute(w, td)
 		} else {
+			td.Printer = p
 			next.ServeHTTP(w, r)
 		}
 	})
@@ -188,3 +199,39 @@ func throwError(status int, err error, w http.ResponseWriter, r *http.Request) {
 		Msg:  http.StatusText(status),
 	})
 }
+
+func bestFitLanguage(qry string) i18n.Printer {
+	type option struct {
+		bcp     string
+		quality float64
+	}
+	var xs []option
+
+	for subqry := range strings.SplitSeq(qry, ",") {
+		var o option
+		subqry = strings.TrimSpace(subqry)
+		parts := strings.Split(subqry, ";")
+		o.bcp = strings.ToLower(parts[0])
+		if len(parts) == 1 {
+			o.quality = 1
+		} else {
+			n, err := fmt.Sscanf(parts[1], "q=%f", &o.quality)
+			if n != 1 || err != nil {
+				/* Malformed query string; just give up */
+				return i18n.DefaultPrinter
+			}
+		}
+		xs = append(xs, o)
+	}
+
+	slices.SortFunc(xs, func(x, y option) int {
+		return cmp.Compare(y.quality, x.quality)
+	})
+
+	for _, x := range xs {
+		if p, ok := i18n.Printers[x.bcp]; ok {
+			return p
+		}
+	}
+	return i18n.DefaultPrinter
+}