package routes

import (
	"net/http"
	"strconv"
	"time"

	"git.artlef.fr/PersonalLibraryManager/internal/appcontext"
	"git.artlef.fr/PersonalLibraryManager/internal/model"
	"git.artlef.fr/PersonalLibraryManager/internal/myvalidator"
	"git.artlef.fr/PersonalLibraryManager/internal/query"
	"github.com/gin-gonic/gin"
)

func GetBookHandler(ac appcontext.AppContext) {
	bookId, err := strconv.ParseUint(ac.C.Param("id"), 10, 64)
	if err != nil {
		ac.C.JSON(http.StatusBadRequest, gin.H{"error": err})
		return
	}
	user, fetchUserErr := ac.GetAuthenticatedUser()
	if fetchUserErr != nil {
		myvalidator.ReturnErrorsAsJsonResponse(&ac, fetchUserErr)
		return
	}
	err = myvalidator.ValidateId(ac.Db, uint(bookId), &model.Book{})
	if err != nil {
		myvalidator.ReturnErrorsAsJsonResponse(&ac, err)
		return
	}
	book, queryErr := query.FetchBookGet(ac.Db, user.ID, bookId)
	if queryErr != nil {
		myvalidator.ReturnErrorsAsJsonResponse(&ac, err)
		return
	}
	err = fixBookGetDateFields(&book)
	if err != nil {
		myvalidator.ReturnErrorsAsJsonResponse(&ac, err)
		return
	}
	ac.C.JSON(http.StatusOK, book)
}

func fixBookGetDateFields(book *query.BookGet) error {
	if book.StartReadDate == "" {
		return nil
	}
	startDate, err := time.Parse(time.RFC3339, book.StartReadDate)
	if err != nil {
		return err
	}
	book.StartReadDate = startDate.Format(time.DateOnly)
	return nil
}