package routes

import (
	"github.com/gin-gonic/gin"
	"net/http"
	"strconv"
	"udemy_httpserver/models"
)

func postEvent(c *gin.Context) {
	var event models.Event
	err := c.ShouldBindJSON(&event)
	if err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
		return
	}
	// Todo: implement user auth
	user, _ := c.Get("user")
	event.UserID = user.(*models.User).ID
	err = event.Save()
	if err != nil {
		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
		return
	}
	c.JSON(http.StatusCreated, event)

}

func getEvents(c *gin.Context) {
	events, err := models.GetAllEvents()
	if err != nil {
		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
		return
	}
	c.JSON(http.StatusOK, events)
}

func getSingleEvent(c *gin.Context) {
	eventID, err := strconv.ParseInt(c.Param("id"), 10, 64)
	if err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
		return
	}
	candidateEvent, err := models.FindEventById(int(eventID))
	if err != nil {
		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
		return
	}
	if candidateEvent == nil {
		c.JSON(http.StatusNotFound, gin.H{"error": "event not found"})
		return
	}
	c.JSON(http.StatusOK, *candidateEvent)
}

func updateEvent(c *gin.Context) {
	// First we try to parse the json body into a struct
	var event models.Event
	err := c.ShouldBindJSON(&event)
	if err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
		return
	}
	// We try to find the event by id
	eventID, err := strconv.ParseInt(c.Param("id"), 10, 64)
	if err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
		return
	}
	// If we get a db error, we return a 500 error
	candidateEvent, err := models.FindEventById(int(eventID))
	if err != nil {
		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
		return
	}
	// If the event is not found, we return a 404
	if candidateEvent == nil {
		c.JSON(http.StatusNotFound, gin.H{"error": "event not found"})
		return
	}
	// If the event is found, we update it
	event.ID = candidateEvent.ID
	if event.UserID == 0 {
		event.UserID = candidateEvent.UserID
	}
	err = event.Update()
	if err != nil {
		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
		return
	}
	c.JSON(http.StatusOK, event)
}