132 lines
3.7 KiB
Go
132 lines
3.7 KiB
Go
package api
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import (
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"encoding/json"
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"fmt"
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"io"
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"log"
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"net/http"
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"strconv"
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"srs.epita.fr/fic-server/libfic"
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"github.com/gorilla/mux"
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)
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type DispatchFunction func([]string, []byte) (interface{}, error)
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func apiHandler(f func (map[string]string,[]byte) (interface{}, error)) func(http.ResponseWriter, *http.Request) {
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return func(w http.ResponseWriter, r *http.Request) {
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log.Printf("Handling %s request from %s: %s [%s]\n", r.Method, r.RemoteAddr, r.URL.Path, r.UserAgent())
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w.Header().Set("Content-Type", "application/json")
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var ret interface{}
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var err error = nil
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// Read the body
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if r.ContentLength < 0 || r.ContentLength > 6553600 {
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http.Error(w, fmt.Sprintf("{errmsg:\"Request too large or request size unknown\"}", err), http.StatusRequestEntityTooLarge)
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return
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}
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var body []byte
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if r.ContentLength > 0 {
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tmp := make([]byte, 1024)
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for {
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n, err := r.Body.Read(tmp)
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for j := 0; j < n; j++ {
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body = append(body, tmp[j])
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}
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if err != nil || n <= 0 {
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break
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}
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}
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}
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ret, err = f(mux.Vars(r), body)
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// Format response
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resStatus := http.StatusOK
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if err != nil {
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ret = map[string]string{"errmsg": err.Error()}
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resStatus = http.StatusBadRequest
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log.Println(r.RemoteAddr, resStatus, err.Error())
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}
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if ret == nil {
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ret = map[string]string{"errmsg": "Page not found"}
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resStatus = http.StatusNotFound
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}
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if str, found := ret.(string); found {
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w.WriteHeader(resStatus)
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io.WriteString(w, str)
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} else if bts, found := ret.([]byte); found {
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w.WriteHeader(resStatus)
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w.Write(bts)
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} else if j, err := json.Marshal(ret); err != nil {
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http.Error(w, fmt.Sprintf("{\"errmsg\":\"%q\"}", err), http.StatusInternalServerError)
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} else {
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w.WriteHeader(resStatus)
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w.Write(j)
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}
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}
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}
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func teamHandler(f func(fic.Team,map[string]string,[]byte) (interface{}, error)) func (map[string]string,[]byte) (interface{}, error) {
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return func (args map[string]string, body []byte) (interface{}, error) {
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if tid, err := strconv.Atoi(string(args["tid"])); err != nil {
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if team, err := fic.GetTeamByInitialName(args["tid"]); err != nil {
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return nil, err
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} else {
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return f(team, args, body)
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}
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} else if team, err := fic.GetTeam(tid); err != nil {
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return nil, err
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} else {
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return f(team, args, body)
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}
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}
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}
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func themeHandler(f func(fic.Theme,map[string]string,[]byte) (interface{}, error)) func (map[string]string,[]byte) (interface{}, error) {
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return func (args map[string]string, body []byte) (interface{}, error) {
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if tid, err := strconv.Atoi(string(args["tid"])); err != nil {
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return nil, err
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} else if theme, err := fic.GetTheme(tid); err != nil {
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return nil, err
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} else {
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return f(theme, args, body)
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}
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}
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}
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func exerciceHandler(f func(fic.Exercice,map[string]string,[]byte) (interface{}, error)) func (map[string]string,[]byte) (interface{}, error) {
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return func (args map[string]string, body []byte) (interface{}, error) {
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if eid, err := strconv.Atoi(string(args["eid"])); err != nil {
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return nil, err
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} else if exercice, err := fic.GetExercice(int64(eid)); err != nil {
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return nil, err
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} else {
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return f(exercice, args, body)
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}
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}
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}
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func themedExerciceHandler(f func(fic.Theme,fic.Exercice,map[string]string,[]byte) (interface{}, error)) func (fic.Theme,map[string]string,[]byte) (interface{}, error) {
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return func (theme fic.Theme, args map[string]string, body []byte) (interface{}, error) {
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if eid, err := strconv.Atoi(string(args["eid"])); err != nil {
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return nil, err
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} else if exercice, err := fic.GetExercice(int64(eid)); err != nil {
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return nil, err
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} else {
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return f(theme, exercice, args, body)
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}
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}
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}
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func notFound(args map[string]string, body []byte) (interface{}, error) {
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return nil, nil
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}
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