feat(commondao): add render support to commondao realm

examples/gno.land/r/gnoland/commondao/render.gno

@@ -1,6 +1,110 @@
 package commondao
 
-func Render(string) string {
-	// TODO: Implement Render support
-	return ""
+import (
+	"std"
+	"strconv"
+
+	"gno.land/p/demo/mux"
+	"gno.land/p/gnoland/commondao"
+	"gno.land/p/jeronimoalbi/pager"
+)
+
+func Render(path string) string {
+	// TODO: Add view to list proposals of a DAO
+	// TODO: Add view to render a single proposal (allow/disallow must be configurable)
+	// TODO: Add view to render a SubDAO (use query "?path=...")
+	router := mux.NewRouter()
+	router.HandleFunc("", renderHome)
+	router.HandleFunc("{daoID}", renderDAO)
+	return router.Render(path)
+}
+
+func renderHome(res *mux.ResponseWriter, _ *mux.Request) {
+	// TODO: Render a header text for users
+	// TODO: Render generic links to vote or execute proposals
+	res.Write("# Common DAO\n")
+}
+
+func renderDAO(res *mux.ResponseWriter, req *mux.Request) {
+	// TODO: Support config option to allow/disallow rendering a DAO
+	rawID := req.GetVar("daoID")
+	daoID, err := strconv.ParseUint(rawID, 10, 64)
+	if err != nil {
+		res.Write("Value is an invalid DAO ID")
+		return
+	}
+
+	dao := getDAO(daoID)
+	if dao == nil {
+		res.Write("DAO not found")
+		return
+	}
+
+	res.Write("# ")
+	res.Write(dao.Name())
+	res.Write("\n")
+
+	if s := dao.Description(); s != "" {
+		res.Write(s)
+		res.Write("\n\n")
+	}
+
+	// TODO: Add link to DAO's proposals list view
+
+	res.Write("## Members\n")
+	renderMembers(res, dao, req.RawPath)
+
+	if dao.Children().Len() > 0 {
+		res.Write("## Tree\n")
+		renderTree(res, dao, "")
+	}
+
+	// TODO: List latest 10 proposals
+}
+
+func renderMembers(res *mux.ResponseWriter, dao *commondao.CommonDAO, path string) {
+	members := dao.Members()
+	membersCount := members.Size()
+	if membersCount == 0 {
+		res.Write("The DAO has no members\n\n")
+		return
+	}
+
+	p, err := pager.New(path, membersCount, pager.WithPageQueryParam("members"), pager.WithPageSize(10))
+	if err != nil {
+		res.Write(err.Error())
+		return
+	}
+
+	members.IterateByOffset(p.Offset(), p.PageSize(), func(addr std.Address) bool {
+		res.Write("- ")
+		res.Write(addr.String())
+		res.Write("\n")
+		return false
+	})
+
+	if p.HasPages() {
+		res.Write("\n")
+		res.Write(pager.Picker(p))
+		res.Write("\n")
+	}
+
+	res.Write("\n")
+}
+
+func renderTree(res *mux.ResponseWriter, dao *commondao.CommonDAO, indent string) {
+	// TODO: Use bold and no DAO link for the current DAO (requires req.Query support)
+	// TODO: Render a link to the DAO page
+	res.Write(indent)
+	res.Write("- ")
+	res.Write(dao.Name())
+	res.Write("\n")
+
+	indent += "  "
+	dao.Children().ForEach(func(_ int, v any) bool {
+		if subDAO, ok := v.(*commondao.CommonDAO); ok {
+			renderTree(res, subDAO, indent)
+		}
+		return false
+	})
 }