Library/routes/api/v1/books_add_update.go

88 lines
2.3 KiB
Go

package v1
import (
"encoding/json"
"git.kolaente.de/konrad/Library/models"
"github.com/labstack/echo"
"net/http"
"strconv"
"strings"
)
// BookAddOrUpdate is the handler to add a book
func BookAddOrUpdate(c echo.Context) error {
// Check for Request Content
bookFromString := c.FormValue("book")
var datBook *models.Book
if bookFromString == "" {
if err := c.Bind(&datBook); err != nil {
return c.JSON(http.StatusBadRequest, models.Message{"No book model provided."})
}
} else {
// Decode the JSON
dec := json.NewDecoder(strings.NewReader(bookFromString))
err := dec.Decode(&datBook)
if err != nil {
return c.JSON(http.StatusBadRequest, models.Message{"Error decoding book: " + err.Error()})
}
}
// Check if we have an ID other than the one in the struct
id := c.Param("id")
if id != "" {
// Make int
bookID, err := strconv.ParseInt(id, 10, 64)
if err != nil {
return c.JSON(http.StatusBadRequest, models.Message{"Invalid ID."})
}
datBook.ID = bookID
}
// Check if the book exists
if datBook.ID != 0 {
_, exists, err := models.GetBookByID(datBook.ID)
if err != nil {
return c.JSON(http.StatusInternalServerError, models.Message{"Could not check if the book exists."})
}
if !exists {
return c.JSON(http.StatusNotFound, models.Message{"The book does not exist."})
}
}
// Check if we have at least a title
if datBook.Title == "" && datBook.ID == 0 {
return c.JSON(http.StatusBadRequest, models.Message{"You need at least a title to insert a new book!"})
}
// Insert or update the book
newBook, err := models.AddOrUpdateBook(*datBook)
if err != nil {
if models.IsErrAuthorCannotBeEmpty(err) {
return c.JSON(http.StatusBadRequest, models.Message{"Id cannot be 0."})
}
if models.IsErrBookTitleCannotBeEmpty(err) {
return c.JSON(http.StatusBadRequest, models.Message{"You need to provide at least a title for the book."})
}
if models.IsErrNoPublisherName(err) {
return c.JSON(http.StatusBadRequest, models.Message{"You need to provide at least a name to insert a new publisher."})
}
return c.JSON(http.StatusInternalServerError, models.Message{"Error"})
}
// Log the action
err = models.LogAction("Added or updated a book", newBook.ID, c)
if err != nil {
return c.JSON(http.StatusInternalServerError, models.Message{"Could not log."})
}
return c.JSON(http.StatusOK, newBook)
}