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fit_handler.go
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fit_handler.go
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package httphandlers
import (
"encoding/json"
"fmt"
"log"
"net/http"
"net/url"
"strconv"
"github.com/gorilla/mux"
"github.com/jamesrr39/tracks-app/server/dal"
"github.com/jamesrr39/tracks-app/server/domain"
)
// FitHandler is an HTTP handler for fit files
type FitHandler struct {
dal *dal.FitDAL
router *mux.Router
}
// NewFitHandler creates a new FitHandler
func NewFitHandler(dal *dal.FitDAL) *FitHandler {
router := mux.NewRouter()
handler := &FitHandler{dal: dal, router: router}
router.HandleFunc("/", handler.handleGetAll).Methods("GET")
router.HandleFunc("/file", handler.handleGet).Methods("GET")
router.HandleFunc("/laps", handler.handleGetLaps).Methods("GET")
return handler
}
func (h *FitHandler) handleGetAll(w http.ResponseWriter, r *http.Request) {
fitFilesSummaries := h.dal.GetAllSummariesInCache()
if 0 == len(fitFilesSummaries) {
fitFilesSummaries = []*domain.FitFileSummary{}
}
w.Header().Set("Content-Type", "application/json")
err := json.NewEncoder(w).Encode(fitFilesSummaries)
if nil != err {
http.Error(w, "couldn't encode fit tracks to json. Error: "+err.Error(), 500)
return
}
}
func (h *FitHandler) handleGet(w http.ResponseWriter, r *http.Request) {
escapedFilePath := r.URL.Query().Get("filePath")
filePath, err := url.QueryUnescape(escapedFilePath)
if nil != err {
http.Error(w, fmt.Sprintf("couldn't unescape fit file name: '%s'. Error: %s", escapedFilePath, err), 400)
return
}
log.Println("getting fit file for " + filePath)
fitFile, err := h.dal.Get(filePath)
if nil != err {
http.Error(w, err.Error(), 500) // todo better response codes
return
}
w.Header().Set("Content-Type", "application/json")
err = json.NewEncoder(w).Encode(fitFile)
if nil != err {
http.Error(w, err.Error(), 500)
return
}
}
func (h *FitHandler) handleGetLaps(w http.ResponseWriter, r *http.Request) {
incrementMetres := 1000
var err error
escapedFilePath := r.URL.Query().Get("filePath")
filePath, err := url.QueryUnescape(escapedFilePath)
incrementMetresStr := r.URL.Query().Get("lapLength")
if incrementMetresStr != "" {
incrementMetres, err = strconv.Atoi(incrementMetresStr)
if nil != err {
http.Error(w, fmt.Sprintf("couldn't convert lapLength '%s' to a number. Error: %s", incrementMetresStr, err), 400)
return
}
}
fitFile, err := h.dal.Get(filePath)
if nil != err {
http.Error(w, err.Error(), 500) // todo better response codes
return
}
laps := fitFile.GetLaps(incrementMetres)
w.Header().Set("Content-Type", "application/json")
err = json.NewEncoder(w).Encode(laps)
if nil != err {
http.Error(w, err.Error(), 500)
return
}
}
func (h *FitHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
h.router.ServeHTTP(w, r)
}