handlerMahasiswa.go

package handler

import (
    "encoding/json"
    "io/ioutil"
    "nama_npm_pert4/model" //sesuaikan dengan nama folder (case sensitive)
    "net/http"
)

func HandlerMahasiswaGet(w http.ResponseWriter, r *http.Request) {

    var data interface{}
    var err error

    npm := r.URL.Query()["npm"]
    if len(npm) != 0 {
        data, err = model.GetMahasiswa(db, npm[0])
    } else {
        data, err = model.GetAllMahasiswa(db)
    }

    if err != nil {
        http.Error(w, err.Error(), http.StatusInternalServerError)
    }
    jsonData, _ := json.Marshal(data)
    w.Write(jsonData)
}

func HandlerMahasiswaPost(w http.ResponseWriter, r *http.Request) {
    defer r.Body.Close()
    body, err := ioutil.ReadAll(r.Body)
    if err != nil {
        http.Error(w, err.Error(), http.StatusInternalServerError)
        return
    }
    var data model.Mahasiswa
    if err = json.Unmarshal(body, &data); err != nil {
        http.Error(w, err.Error(), http.StatusInternalServerError)
        return
    }
    if err = data.Insert(db); err != nil {
        http.Error(w, err.Error(), http.StatusInternalServerError)
        return
    }
    jsonData, err := json.Marshal(data)
    if err != nil {
        http.Error(w, err.Error(), http.StatusInternalServerError)
    }
    w.Write(jsonData)
}

func HandlerMahasiswaDelete(w http.ResponseWriter, r *http.Request) {
    npm := r.URL.Query()["npm"]
    if len(npm) != 0 {
        data := model.Mahasiswa{NPM: npm[0]}
        if err := data.Delete(db); err != nil {
            http.Error(w, "ID tidak ditemukan", http.StatusBadRequest)
            return
        }
        w.Write([]byte("Data telah dihapus"))
    } else {
        http.Error(w, "ID tidak ditemukan", http.StatusInternalServerError)
    }
}

func HandlerMahasiswaPut(w http.ResponseWriter, r *http.Request) {
    npm := r.URL.Query()["npm"]
    if len(npm) == 0 {
        http.Error(w, "ID tidak ditemukan", http.StatusBadRequest)
        return
    }
    defer r.Body.Close()
    body, err := ioutil.ReadAll(r.Body)
    if err != nil {
        http.Error(w, err.Error(), http.StatusInternalServerError)
        return
    }
    jsonmap := make(map[string]interface{})
    err = json.Unmarshal(body, &jsonmap)
    if err != nil {
        http.Error(w, err.Error(), http.StatusInternalServerError)
        return
    }
    data := model.Mahasiswa{NPM: npm[0]}
    err = data.Update(db, jsonmap)
    if err != nil {
        http.Error(w, err.Error(), http.StatusInternalServerError)
        return
    }
    result, err := model.GetMahasiswa(db, npm[0])
    if err != nil {
        http.Error(w, err.Error(), http.StatusInternalServerError)
        return
    }
    jsonData, err := json.Marshal(result)
    if err != nil {
        http.Error(w, err.Error(), http.StatusInternalServerError)
        return
    }
    w.Write(jsonData)
}