alai-server/backend/controllers/level.go

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package controllers
import (
"encoding/json"
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"math"
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"net/http"
"strconv"
"git.cromer.cl/Proyecto-Titulo/alai-server/backend/database"
"git.cromer.cl/Proyecto-Titulo/alai-server/backend/models"
"git.cromer.cl/Proyecto-Titulo/alai-server/backend/utils"
"github.com/julienschmidt/httprouter"
)
func ListLevel(writer http.ResponseWriter, request *http.Request, params httprouter.Params) {
gdb := database.Connect()
defer database.Close(gdb)
var level []models.Level
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queryParams := request.URL.Query()
limit := 50
if queryParams.Get("limit") != "" {
var err error
limit, err = strconv.Atoi(queryParams.Get("limit"))
if err != nil {
utils.JSONErrorOutput(writer, http.StatusBadRequest, err.Error())
return
}
limit = int(math.Min(float64(500), float64(limit)))
limit = int(math.Max(float64(1), float64(limit)))
}
offset := 0
if queryParams.Get("offset") != "" {
var err error
offset, err = strconv.Atoi(queryParams.Get("offset"))
if err != nil {
utils.JSONErrorOutput(writer, http.StatusBadRequest, err.Error())
return
}
offset = int(math.Min(float64(9223372036854775807), float64(offset)))
offset = int(math.Max(float64(0), float64(offset)))
}
result := gdb.Model(&models.Level{}).Order("ID asc").Limit(limit).Offset(offset).Find(&level)
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if result.Error != nil {
utils.JSONErrorOutput(writer, http.StatusBadRequest, result.Error.Error())
return
} else {
writer.Header().Set("Content-Type", "application/json")
writer.WriteHeader(http.StatusOK)
json.NewEncoder(writer).Encode(level)
}
}
func GetLevel(writer http.ResponseWriter, request *http.Request, params httprouter.Params) {
gdb := database.Connect()
defer database.Close(gdb)
var level models.Level
result := gdb.Model(&models.Level{}).Find(&level, params.ByName("id"))
if result.Error != nil {
utils.JSONErrorOutput(writer, http.StatusBadRequest, result.Error.Error())
return
} else if result.RowsAffected == 0 {
writer.WriteHeader(http.StatusNotFound)
return
} else {
writer.Header().Set("Content-Type", "application/json")
writer.WriteHeader(http.StatusOK)
json.NewEncoder(writer).Encode(level)
}
}
func CreateLevel(writer http.ResponseWriter, request *http.Request, params httprouter.Params) {
gdb := database.Connect()
defer database.Close(gdb)
var level models.Level
decoder := json.NewDecoder(request.Body)
err := decoder.Decode(&level)
if err != nil {
utils.JSONErrorOutput(writer, http.StatusBadRequest, err.Error())
return
}
result := gdb.Create(&level)
if result.Error != nil {
utils.JSONErrorOutput(writer, http.StatusBadRequest, result.Error.Error())
return
} else {
writer.WriteHeader(http.StatusNoContent)
}
}
func UpdateLevel(writer http.ResponseWriter, request *http.Request, params httprouter.Params) {
gdb := database.Connect()
defer database.Close(gdb)
var level models.Level
decoder := json.NewDecoder(request.Body)
err := decoder.Decode(&level)
if err != nil {
utils.JSONErrorOutput(writer, http.StatusBadRequest, err.Error())
return
}
level.ID, err = strconv.ParseUint(params.ByName("id"), 10, 64)
if err != nil {
utils.JSONErrorOutput(writer, http.StatusBadRequest, err.Error())
return
}
result := gdb.Updates(&level)
if result.Error != nil {
utils.JSONErrorOutput(writer, http.StatusBadRequest, result.Error.Error())
return
} else if result.RowsAffected == 0 {
writer.WriteHeader(http.StatusNotFound)
return
} else {
writer.WriteHeader(http.StatusNoContent)
}
}
func DeleteLevel(writer http.ResponseWriter, request *http.Request, params httprouter.Params) {
gdb := database.Connect()
defer database.Close(gdb)
var level models.Level
var err error
level.ID, err = strconv.ParseUint(params.ByName("id"), 10, 64)
if err != nil {
utils.JSONErrorOutput(writer, http.StatusBadRequest, err.Error())
return
}
result := gdb.Delete(&level)
if result.Error != nil {
utils.JSONErrorOutput(writer, http.StatusBadRequest, result.Error.Error())
return
} else if result.RowsAffected == 0 {
writer.WriteHeader(http.StatusNotFound)
return
} else {
writer.WriteHeader(http.StatusNoContent)
}
}