first commit

model/channel_list.go

@@ -0,0 +1,71 @@
+// Copyright (c) 2015 Spinpunch, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"io"
+)
+
+type ChannelList struct {
+	Channels []*Channel                `json:"channels"`
+	Members  map[string]*ChannelMember `json:"members"`
+}
+
+func (o *ChannelList) ToJson() string {
+	b, err := json.Marshal(o)
+	if err != nil {
+		return ""
+	} else {
+		return string(b)
+	}
+}
+
+func (o *ChannelList) Etag() string {
+
+	id := "0"
+	var t int64 = 0
+	var delta int64 = 0
+
+	for _, v := range o.Channels {
+		if v.LastPostAt > t {
+			t = v.LastPostAt
+			id = v.Id
+		}
+
+		if v.UpdateAt > t {
+			t = v.UpdateAt
+			id = v.Id
+		}
+
+		member := o.Members[v.Id]
+
+		if member != nil {
+			max := v.LastPostAt
+			if v.UpdateAt > max {
+				max = v.UpdateAt
+			}
+
+			delta += max - member.LastViewedAt
+
+			if member.LastViewedAt > t {
+				t = member.LastViewedAt
+				id = v.Id
+			}
+		}
+	}
+
+	return Etag(id, t, delta, len(o.Channels))
+}
+
+func ChannelListFromJson(data io.Reader) *ChannelList {
+	decoder := json.NewDecoder(data)
+	var o ChannelList
+	err := decoder.Decode(&o)
+	if err == nil {
+		return &o
+	} else {
+		return nil
+	}
+}