package apod import ( "encoding/json" "fmt" "regexp" "tildegit.org/andinus/cetus/request" ) // APOD holds the response from the api. Not every field is returned // in every request. Code & Msg should be filled only if the api // returns an error, this behaviour was observed and shouldn't be // trusted. type APOD struct { Copyright string `json:"copyright"` Date string `json:"date"` Explanation string `json:"explanation"` HDURL string `json:"hdurl"` MediaType string `json:"media_type"` ServiceVersion string `json:"service_version"` Title string `json:"title"` URL string `json:"url"` Code int `json:"code"` Msg string `json:"msg"` } // UnmarshalJson will take body as input & unmarshal it to res. func UnmarshalJson(res *APOD, body string) error { err := json.Unmarshal([]byte(body), res) if err != nil { err = fmt.Errorf("json.go: unmarshalling json failed\n%s", err.Error()) } return err } // GetJson takes reqInfo as input and returns the body and an error. func GetJson(reqInfo map[string]string) (string, error) { var body string var err error // This regexp is not perfect and does not guarantee that the // request will not fail because of wrong date, this will // eliminate many wrong dates though. re := regexp.MustCompile("((19|20)\\d\\d)-(0?[1-9]|1[012])-(0?[1-9]|[12][0-9]|3[01])") if !re.MatchString(reqInfo["date"]) { err = fmt.Errorf("json.go: %s does not match format 'YYYY-MM-DD'", reqInfo["date"]) return body, err } // reqInfo is map[string]string and params is built from it, currently // it takes apiKey and the date from reqInfo to build param. If any // new key/value is added to reqInfo then it must be addded here too, // it won't be sent as param directly. params := make(map[string]string) params["api_key"] = reqInfo["apiKey"] params["date"] = reqInfo["date"] body, err = request.GetRes(reqInfo["api"], params) return body, err }