func windHandler(w http.ResponseWriter, r *http.Request, db *data.Database) {
t, _ := computeTime(r.FormValue("time"))
var queries []map[string]string
err := json.Unmarshal([]byte(r.FormValue("query")), &queries)
if err != nil {
jww.ERROR.Println(err)
return
}
var result struct {
Data [][]float64
Label []string
}
result.Data = make([][]float64, len(queries))
result.Label = make([]string, len(queries))
rxp := regexp.MustCompile(`\[([^]]*)\]`)
for index, querymap := range queries {
result.Label[index] = querymap["label"]
result.Data[index] = make([]float64, 32)
id := "%"
if _, ok := querymap["id"]; ok {
id = querymap["id"]
}
datatype := "%"
if _, ok := querymap["type"]; ok {
datatype = querymap["type"]
}
if _, ok := querymap["label"]; ok {
result.Label[index] = querymap["label"]
} else {
result.Label[index] = "Unknown"
}
cols := rxp.FindStringSubmatch(datatype)
var col string
if len(cols) > 1 {
col = cols[1]
} else {
col = "avg"
}
key := rxp.ReplaceAllString(datatype, "")
for row := range db.QueryWind(t, key, col, id, 0) {
speed := units.NewSpeedMetersPerSecond(row.Value)
result.Data[index][int(row.Dir)], err = speed.Get(viper.GetStringMapString("units")["WindSpeed"])
if err != nil {
jww.ERROR.Println(err)
return
}
}
}
json.NewEncoder(w).Encode(result)
}
