package routing

import (
	"lishwist/error"
	"net/http"
)

func (ctx *Context) WishlistAdd(w http.ResponseWriter, r *http.Request) {
	user := ctx.ExpectUser(r)
	if err := r.ParseForm(); err != nil {
		http.Error(w, err.Error(), http.StatusBadRequest)
		return
	}
	newGiftName := r.Form.Get("gift_name")
	err := user.AddGift(newGiftName)
	if err != nil {
		error.Page(w, "Failed to add gift.", http.StatusInternalServerError, err)
		return
	}
	http.Redirect(w, r, "/", http.StatusSeeOther)
}

func (ctx *Context) WishlistDelete(w http.ResponseWriter, r *http.Request) {
	user := ctx.ExpectUser(r)
	if err := r.ParseForm(); err != nil {
		http.Error(w, err.Error(), http.StatusBadRequest)
		return
	}
	targets := r.Form["gift"]
	err := user.RemoveGifts(targets...)
	if err != nil {
		error.Page(w, "Failed to remove gifts.", http.StatusInternalServerError, err)
		return
	}
	http.Redirect(w, r, "/", http.StatusSeeOther)
}

func (ctx *Context) ForeignWishlistPost(w http.ResponseWriter, r *http.Request) {
	user := ctx.ExpectUser(r)
	if err := r.ParseForm(); err != nil {
		error.Page(w, "Failed to parse form...", http.StatusBadRequest, err)
		return
	}
	userReference := r.PathValue("userReference")
	switch r.Form.Get("intent") {
	case "claim":
		claims := r.Form["unclaimed"]
		unclaims := r.Form["claimed"]
		err := user.ClaimGifts(claims, unclaims)
		if err != nil {
			error.Page(w, "Failed to update claim...", http.StatusInternalServerError, err)
			return
		}
	case "complete":
		claims := r.Form["claimed"]
		err := user.CompleteGifts(claims)
		if err != nil {
			error.Page(w, "Failed to complete gifts...", http.StatusInternalServerError, nil)
			return
		}
	case "add":
		giftName := r.Form.Get("gift_name")
		if giftName == "" {
			error.Page(w, "Gift name not provided", http.StatusBadRequest, nil)
			return
		}
		err := user.AddGiftToUser(userReference, giftName)
		if err != nil {
			error.Page(w, "Failed to add gift idea to other user...", http.StatusInternalServerError, err)
			return
		}
	case "delete":
		claims := r.Form["unclaimed"]
		unclaims := r.Form["claimed"]
		gifts := append(claims, unclaims...)
		err := user.RemoveGifts(gifts...)
		if err != nil {
			error.Page(w, "Failed to remove gift idea for other user...", http.StatusInternalServerError, err)
			return
		}
	default:
		http.Error(w, "Invalid intent", http.StatusBadRequest)
	}
	http.Redirect(w, r, "/list/"+userReference, http.StatusSeeOther)
}