refactor: r/demo/users

examples/gno.land/p/demo/pausable/pausable.gno

@@ -1,6 +1,7 @@
 package pausable
 
 import (
+	"errors"
 	"std"
 
 	"gno.land/p/demo/ownable"
@@ -11,6 +12,8 @@ type Pausable struct {
 	paused bool
 }
 
+var ErrPaused = errors.New("pausable: realm is currently paused")
+
 // New returns a new Pausable struct with non-paused state as default
 func New() *Pausable {
 	return &Pausable{
@@ -39,7 +42,7 @@ func (p *Pausable) Pause() error {
 	}
 
 	p.paused = true
-	std.Emit("Paused", "account", p.Owner().String())
+	std.Emit("Paused", "by", p.Owner().String())
 
 	return nil
 }
@@ -51,7 +54,7 @@ func (p *Pausable) Unpause() error {
 	}
 
 	p.paused = false
-	std.Emit("Unpaused", "account", p.Owner().String())
+	std.Emit("Unpaused", "by", p.Owner().String())
 
 	return nil
 }

examples/gno.land/p/sys/users/gno.mod

@@ -0,0 +1,3 @@
+module gno.land/p/sys/users
+
+require gno.land/p/demo/ufmt v0.0.0-latest

examples/gno.land/p/sys/users/users.gno

@@ -0,0 +1,34 @@
+package users
+
+import (
+	"std"
+
+	"gno.land/p/demo/ufmt"
+)
+
+type User struct {
+	Address std.Address
+	Name    string
+}
+
+func (u *User) Render() string {
+	out := ufmt.Sprintf("# User %s\n\n", u.Name)
+	out += ufmt.Sprintf("- Address: %s\n\n", u.Address.String())
+
+	return out
+}
+
+// AddressOrName can be used for resolving either the address or the username
+type AddressOrName string
+
+func (aon AddressOrName) IsName() bool {
+	return aon != "" && aon[0] == '@'
+}
+
+func (aon AddressOrName) Name() (string, bool) {
+	if len(aon) >= 2 && aon[0] == '@' {
+		return string(aon[1:]), true
+	}
+
+	return "", false
+}