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categories.go
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categories.go
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package v1
import (
"net/http"
"strconv"
es "github.com/gkarlik/expense-tracker/api-gateway/proxy/expense-service/v1"
"github.com/gkarlik/expense-tracker/shared/errors"
"github.com/gkarlik/expense-tracker/shared/handler"
"github.com/gkarlik/quark-go"
"github.com/gkarlik/quark-go/logger"
"github.com/gorilla/mux"
)
func CreateCategoryHandler(s quark.Service) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
reqID := handler.GetRequestID(r)
s.Log().InfoWithFields(logger.Fields{"requestID": reqID}, "Processing create category handler")
var category es.CreateCategoryRequest
body, err := handler.ParseRequestData(r, &category)
if err != nil {
s.Log().ErrorWithFields(logger.Fields{"requestID": reqID, "error": err}, "Cannot parse request data")
handler.ErrorResponse(s, w, r, errors.ErrInvalidRequestData, http.StatusBadRequest)
return
}
category.UserID = handler.GetUserID(r)
s.Log().DebugWithFields(logger.Fields{"requestID": reqID, "body": string(body)}, "Create category request body")
conn, err := GetExpenseServiceConn(s)
if err != nil || conn == nil {
s.Log().ErrorWithFields(logger.Fields{"requestID": reqID, "error": err}, "Cannot connect to ExpenseService")
handler.ErrorResponse(s, w, r, errors.ErrInternal, http.StatusInternalServerError)
return
}
defer conn.Close()
expenseService := es.NewExpenseServiceClient(conn)
c, err := expenseService.CreateCategory(handler.GetContextWithSpan(s, r), &category)
if err != nil {
s.Log().ErrorWithFields(logger.Fields{"requestID": reqID, "error": err}, "Cannot create category")
if errors.ErrInvalidCategoryModel.IsSame(err) {
handler.ErrorResponse(s, w, r, errors.ErrInvalidCategoryModel, http.StatusBadRequest)
return
}
handler.ErrorResponse(s, w, r, errors.ErrCannotUpdateCategory, http.StatusInternalServerError)
return
}
handler.Response(s, w, r, c, http.StatusCreated)
s.Log().InfoWithFields(logger.Fields{"requestID": reqID}, "Done processing create category handler")
}
}
func UpdateCategoryHandler(s quark.Service) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
reqID := handler.GetRequestID(r)
s.Log().InfoWithFields(logger.Fields{"requestID": reqID}, "Processing update category handler")
var category es.UpdateCategoryRequest
body, err := handler.ParseRequestData(r, &category)
if err != nil {
s.Log().ErrorWithFields(logger.Fields{"requestID": reqID, "error": err}, "Cannot parse request data")
handler.ErrorResponse(s, w, r, errors.ErrInvalidRequestData, http.StatusBadRequest)
return
}
category.UserID = handler.GetUserID(r)
s.Log().DebugWithFields(logger.Fields{"requestID": reqID, "body": string(body)}, "Update category request body")
conn, err := GetExpenseServiceConn(s)
if err != nil || conn == nil {
s.Log().ErrorWithFields(logger.Fields{"requestID": reqID, "error": err}, "Cannot connect to ExpenseService")
handler.ErrorResponse(s, w, r, errors.ErrInternal, http.StatusInternalServerError)
return
}
defer conn.Close()
expenseService := es.NewExpenseServiceClient(conn)
c, err := expenseService.UpdateCategory(handler.GetContextWithSpan(s, r), &category)
if err != nil {
s.Log().ErrorWithFields(logger.Fields{"requestID": reqID, "error": err}, "Cannot update category")
if errors.ErrInvalidCategoryModel.IsSame(err) {
handler.ErrorResponse(s, w, r, errors.ErrInvalidCategoryModel, http.StatusBadRequest)
return
}
handler.ErrorResponse(s, w, r, errors.ErrCannotUpdateCategory, http.StatusInternalServerError)
return
}
handler.Response(s, w, r, c, http.StatusOK)
s.Log().InfoWithFields(logger.Fields{"requestID": reqID}, "Done processing update category handler")
}
}
func GetCategoryHandler(s quark.Service) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
reqID := handler.GetUserID(r)
s.Log().InfoWithFields(logger.Fields{"requestID": reqID}, "Processing get category handler")
id := mux.Vars(r)["id"]
if id == "" {
s.Log().ErrorWithFields(logger.Fields{"requestID": reqID}, "Missing 'ID' parameter in request")
handler.ErrorResponse(s, w, r, errors.ErrInvalidRequestParameters, http.StatusBadRequest)
return
}
conn, err := GetExpenseServiceConn(s)
if err != nil || conn == nil {
s.Log().ErrorWithFields(logger.Fields{"requestID": reqID, "error": err}, "Cannot connect to ExpenseService")
handler.ErrorResponse(s, w, r, errors.ErrInternal, http.StatusInternalServerError)
return
}
defer conn.Close()
expenseService := es.NewExpenseServiceClient(conn)
c, err := expenseService.GetCategory(handler.GetContextWithSpan(s, r), &es.CategoryIDRequest{ID: id})
if err != nil {
s.Log().ErrorWithFields(logger.Fields{"requestID": reqID, "error": err}, "Cannot get category by ID")
handler.ErrorResponse(s, w, r, errors.ErrCategoryNotFound, http.StatusNotFound)
return
}
handler.Response(s, w, r, c, http.StatusOK)
s.Log().InfoWithFields(logger.Fields{"requestID": reqID}, "Done processing get category handler")
}
}
func RemoveCategoryHandler(s quark.Service) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
reqID := handler.GetUserID(r)
s.Log().InfoWithFields(logger.Fields{"requestID": reqID}, "Processing remove category handler")
id := mux.Vars(r)["id"]
if id == "" {
s.Log().ErrorWithFields(logger.Fields{"requestID": reqID}, "Missing 'ID' parameter in request")
handler.ErrorResponse(s, w, r, errors.ErrInvalidRequestParameters, http.StatusBadRequest)
return
}
conn, err := GetExpenseServiceConn(s)
if err != nil || conn == nil {
s.Log().ErrorWithFields(logger.Fields{"requestID": reqID, "error": err}, "Cannot connect to ExpenseService")
handler.ErrorResponse(s, w, r, errors.ErrInternal, http.StatusInternalServerError)
return
}
defer conn.Close()
expenseService := es.NewExpenseServiceClient(conn)
_, err = expenseService.RemoveCategory(handler.GetContextWithSpan(s, r), &es.CategoryIDRequest{ID: id})
if err != nil {
if errors.ErrCategoryNotFound.IsSame(err) {
handler.ErrorResponse(s, w, r, errors.ErrCategoryNotFound, http.StatusNotFound)
return
}
s.Log().ErrorWithFields(logger.Fields{"requestID": reqID, "error": err}, "Cannot remove category")
handler.ErrorResponse(s, w, r, errors.ErrCannotRemoveCategory, http.StatusInternalServerError)
return
}
w.WriteHeader(http.StatusNoContent)
s.Log().InfoWithFields(logger.Fields{"requestID": reqID}, "Done processing get category handler")
}
}
func GetCategoriesHandler(s quark.Service) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
reqID := handler.GetUserID(r)
s.Log().InfoWithFields(logger.Fields{"requestID": reqID}, "Processing get categories handler")
q := r.URL.Query()
p := q.Get("p")
if p == "" {
// is 'p' parameter is missing default it to '0'
p = "0"
}
page, err := strconv.Atoi(p)
if err != nil {
s.Log().ErrorWithFields(logger.Fields{"requestID": reqID}, "Invalid 'page' parameter in request")
handler.ErrorResponse(s, w, r, errors.ErrInvalidRequestParameters, http.StatusBadRequest)
return
}
conn, err := GetExpenseServiceConn(s)
if err != nil || conn == nil {
s.Log().ErrorWithFields(logger.Fields{"requestID": reqID, "error": err}, "Cannot connect to ExpenseService")
handler.ErrorResponse(s, w, r, errors.ErrInternal, http.StatusInternalServerError)
return
}
defer conn.Close()
expenseService := es.NewExpenseServiceClient(conn)
cs, err := expenseService.GetUserCategories(handler.GetContextWithSpan(s, r), &es.UserPagingRequest{
Limit: handler.CategoriesPageSize,
Offset: int32(page) * handler.CategoriesPageSize,
UserID: handler.GetUserID(r),
})
if err != nil {
s.Log().ErrorWithFields(logger.Fields{"requestID": reqID, "error": err}, "Cannot get categories")
handler.ErrorResponse(s, w, r, errors.ErrCannotGetCategories, http.StatusInternalServerError)
return
}
if len(cs.Categories) == 0 {
w.WriteHeader(http.StatusNotFound)
} else {
handler.Response(s, w, r, cs, http.StatusOK)
}
s.Log().InfoWithFields(logger.Fields{"requestID": reqID}, "Done processing get categories handler")
}
}