Added arn to the main repository

arn/GroupAPI.go

@@ -0,0 +1,137 @@
+package arn
+
+import (
+	"errors"
+	"fmt"
+	"reflect"
+
+	"github.com/aerogo/aero"
+	"github.com/aerogo/api"
+)
+
+// Force interface implementations
+var (
+	_ Joinable      = (*Group)(nil)
+	_ Publishable   = (*Group)(nil)
+	_ PostParent    = (*Group)(nil)
+	_ fmt.Stringer  = (*Group)(nil)
+	_ api.Newable   = (*Group)(nil)
+	_ api.Editable  = (*Group)(nil)
+	_ api.Deletable = (*Group)(nil)
+)
+
+// Actions
+func init() {
+	API.RegisterActions("Group", []*api.Action{
+		// Publish
+		PublishAction(),
+
+		// Unpublish
+		UnpublishAction(),
+
+		// Join
+		JoinAction(),
+
+		// Leave
+		LeaveAction(),
+	})
+}
+
+// Create ...
+func (group *Group) Create(ctx aero.Context) error {
+	user := GetUserFromContext(ctx)
+
+	if user == nil {
+		return errors.New("Not logged in")
+	}
+
+	if !user.IsPro() {
+		return errors.New("Not available for normal users during the BETA phase")
+	}
+
+	group.ID = GenerateID("Group")
+	group.Created = DateTimeUTC()
+	group.CreatedBy = user.ID
+	group.Edited = group.Created
+	group.EditedBy = group.CreatedBy
+
+	group.Members = []*GroupMember{
+		{
+			UserID: user.ID,
+			Role:   "founder",
+			Joined: group.Created,
+		},
+	}
+
+	// Write log entry
+	logEntry := NewEditLogEntry(user.ID, "create", "Group", group.ID, "", "", "")
+	logEntry.Save()
+
+	return group.Unpublish()
+}
+
+// Edit creates an edit log entry.
+func (group *Group) Edit(ctx aero.Context, key string, value reflect.Value, newValue reflect.Value) (consumed bool, err error) {
+	return edit(group, ctx, key, value, newValue)
+}
+
+// OnAppend saves a log entry.
+func (group *Group) OnAppend(ctx aero.Context, key string, index int, obj interface{}) {
+	onAppend(group, ctx, key, index, obj)
+}
+
+// OnRemove saves a log entry.
+func (group *Group) OnRemove(ctx aero.Context, key string, index int, obj interface{}) {
+	onRemove(group, ctx, key, index, obj)
+}
+
+// Delete deletes the object from the database.
+func (group *Group) Delete() error {
+	if group.IsDraft {
+		draftIndex := group.Creator().DraftIndex()
+		draftIndex.GroupID = ""
+		draftIndex.Save()
+	}
+
+	// Delete image files
+	group.DeleteImages()
+
+	// Delete group
+	DB.Delete("Group", group.ID)
+	return nil
+}
+
+// DeleteInContext deletes the amv in the given context.
+func (group *Group) DeleteInContext(ctx aero.Context) error {
+	user := GetUserFromContext(ctx)
+
+	// Write log entry
+	logEntry := NewEditLogEntry(user.ID, "delete", "Group", group.ID, "", fmt.Sprint(group), "")
+	logEntry.Save()
+
+	return group.Delete()
+}
+
+// Authorize returns an error if the given API POST request is not authorized.
+func (group *Group) Authorize(ctx aero.Context, action string) error {
+	user := GetUserFromContext(ctx)
+
+	if user == nil {
+		return errors.New("Not logged in")
+	}
+
+	if action == "edit" && group.CreatedBy != user.ID {
+		return errors.New("Can't edit groups from other people")
+	}
+
+	if action == "join" && group.Restricted {
+		return errors.New("Can't join restricted groups")
+	}
+
+	return nil
+}
+
+// Save saves the group in the database.
+func (group *Group) Save() {
+	DB.Set("Group", group.ID, group)
+}