// getTimeline returns the user's Timeline, you could insert additional things here as well.
func getTimeline(cx appengine.Context, userID, lastid string) ([]TLEntry, error) {
conn := pool.Get(cx)
defer conn.Close()
list, err := redisx.Strings(conn.Do("LRANGE", "TL:"+userID, 0, -1))
if err != nil && err != redisx.ErrNil {
cx.Errorf("GetTimeLine %v", err)
}
ix := 0
if lastid != "0" { // if we aren't the first time, search for the next batch
for i, item := range list {
if item == lastid {
ix = i
break
}
}
}
var timeline []TLEntry
// TimeLineBatchSize is our paging mechanism, we will only return this many images. The user
// can ask for more.
for i := 0; i < abelanaConfig().TimelineBatchSize && i+ix < len(list); i++ {
photoID := list[ix+i]
v, err := redisx.Strings(conn.Do("HMGET", "IM:"+photoID, "date", userID, "flag"))
if err != nil && err != redisx.ErrNil {
cx.Errorf("GetTimeLine HMGET %v", err)
}
if len(v) > 2 && v[2] != "" {
flags, err := strconv.Atoi(v[2])
if err == nil && flags > 1 {
continue // skip flag'd images
}
}
likes, err := redisx.Int(conn.Do("HLEN", "IM:"+photoID))
if err != nil && err != redisx.ErrNil {
cx.Errorf("GetTimeLine HLEN %v", err)
likes = 0
} else {
likes = likes - 1 // offset as there is a Date as well
}
s := strings.Split(photoID, ".")
dn, err := redisx.String(conn.Do("HGET", "HT:"+s[0], "dn"))
if err != nil && err != redisx.ErrNil {
cx.Errorf("GetTimeLine HGET %v", err)
dn = ""
}
dt, err := strconv.ParseInt(v[0], 10, 64)
if err != nil {
dt = 1414883602 // Nov 1, 2014
}
te := TLEntry{dt, s[0], dn, photoID, likes, v[1] == "1"}
timeline = append(timeline, te)
}
return timeline, nil
}
// getPersons finds all the display names
func getPersons(cx appengine.Context, ids []string) ([]Person, error) {
conn := pool.Get(cx)
defer conn.Close()
for _, id := range ids {
conn.Send("HGET", "HT:"+id, "dn")
}
conn.Flush()
var pl []Person
for _, id := range ids {
n, err := redisx.String(conn.Receive())
if err != nil {
return nil, fmt.Errorf("getPersons: receive name: %v", err)
}
pl = append(pl, Person{Kind: "abelana#follower", PersonID: id, Name: n})
}
return pl, nil
}
