config file refactor

1 files changed, 61 insertions, 0 deletions

diff --git a/userpath.go b/userpath.go
new file mode 100644
index 0000000..9c9793f
--- /dev/null
+++ b/userpath.go
@@ -0,0 +1,61 @@
+package main
+
+import (
+	"context"
+	"os/user"
+	"path"
+	"path/filepath"
+	"strings"
+
+	sr "tildegit.org/tjp/sliderule"
+)
+
+func usernameFromRouter(ctx context.Context) (string, bool) {
+	username, ok := sr.RouteParams(ctx)["username"]
+	return username, ok
+}
+
+func userFsRoute(ctx context.Context, route RouteDirective) (RouteDirective, bool) {
+	username, ok := usernameFromRouter(ctx)
+	if !ok {
+		return route, false
+	}
+
+	u, err := user.Lookup(username)
+	if err != nil {
+		return route, false
+	}
+
+	route.URLPath = strings.ReplaceAll(route.URLPath, "~", "~"+u.Username)
+	if strings.HasPrefix(route.FsPath, "~/") {
+		route.FsPath = filepath.Join(u.HomeDir, route.FsPath[2:])
+	} else {
+		route.FsPath = strings.ReplaceAll(route.FsPath, "/~/", "/"+u.Username+"/")
+	}
+	return route, true
+}
+
+func buildAndAddRoute(router *sr.Router, route RouteDirective, handlerf func(RouteDirective) sr.Handler) {
+	var (
+		urlpath string
+		handler sr.Handler
+	)
+
+	if strings.IndexByte(route.FsPath, '~') < 0 {
+		urlpath = route.URLPath
+		handler = handlerf(route)
+	} else {
+		urlpath = strings.Replace(route.URLPath, "~", "~:username", 1)
+		handler = sr.HandlerFunc(func(ctx context.Context, request *sr.Request) *sr.Response {
+			route, ok := userFsRoute(ctx, route)
+			if !ok {
+				return nil
+			}
+
+			return handlerf(route).Handle(ctx, request)
+		})
+	}
+
+	router.Route(urlpath, handler)
+	router.Route(path.Join(urlpath, "*"), handler)
+}