package routing

import (
	"log"
	"net/http"

	"github.com/Teajey/rsvp"

	lishwist "lishwist/core"
	"lishwist/http/response"
)

func WishlistAdd(app *lishwist.Session, h http.Header, r *http.Request) rsvp.Response {
	err := r.ParseForm()
	if err != nil {
		return response.Error(http.StatusBadRequest, "Failed to parse form")
	}

	newGiftName := r.Form.Get("gift_name")
	err = app.MakeWish(newGiftName)
	if err != nil {
		log.Printf("%s\n", err)
		return response.Error(http.StatusInternalServerError, "Failed to add gift.")
	}
	return rsvp.SeeOther("/")
}

func WishlistDelete(app *lishwist.Session, h http.Header, r *http.Request) rsvp.Response {
	err := r.ParseForm()
	if err != nil {
		return response.Error(http.StatusBadRequest, "Failed to parse form")
	}

	targets := r.Form["gift"]
	err = app.RevokeWishes(targets...)
	if err != nil {
		log.Printf("%s\n", err)
		return response.Error(http.StatusInternalServerError, "Failed to remove gifts.")
	}
	return rsvp.SeeOther("/")
}

func ForeignWishlistPost(app *lishwist.Session, h http.Header, r *http.Request) rsvp.Response {
	err := r.ParseForm()
	if err != nil {
		return response.Error(http.StatusBadRequest, "Failed to parse form")
	}

	userReference := r.PathValue("userReference")
	intent := r.Form.Get("intent")
	switch intent {
	case "claim":
		claims := r.Form["unclaimed"]
		unclaims := r.Form["claimed"]
		err := app.ClaimWishes(claims, unclaims)
		if err != nil {
			log.Printf("%s\n", err)
			return response.Error(http.StatusInternalServerError, "Failed to update claim...")
		}
	case "complete":
		claims := r.Form["claimed"]
		err := app.CompleteWishes(claims)
		if err != nil {
			log.Printf("%s\n", err)
			return response.Error(http.StatusInternalServerError, "Failed to complete gifts...")
		}
	case "add":
		wishName := r.Form.Get("gift_name")
		if wishName == "" {
			return response.Error(http.StatusBadRequest, "Gift name not provided")
		}
		err := app.SuggestWishForUser(userReference, wishName)
		if err != nil {
			log.Printf("%s\n", err)
			return response.Error(http.StatusInternalServerError, "Failed to add gift idea to other user...")
		}
	case "delete":
		claims := r.Form["unclaimed"]
		unclaims := r.Form["claimed"]
		gifts := append(claims, unclaims...)
		err := app.RecindWishesForUser(gifts...)
		if err != nil {
			log.Printf("%s\n", err)
			return response.Error(http.StatusInternalServerError, "Failed to remove gift idea for other user...")
		}
	default:
		return response.Error(http.StatusBadRequest, "Invalid intent %q", intent)
	}
	return rsvp.SeeOther("/list/" + userReference)
}