package handler

import (
	"encoding/json"
	"net/http"

	"financeiro-carvalho/internal/model"
	"financeiro-carvalho/internal/service"
)

type SettingsHandler struct {
	svc *service.SettingsService
}

func NewSettingsHandler(svc *service.SettingsService) *SettingsHandler {
	return &SettingsHandler{svc: svc}
}

func (h *SettingsHandler) Get(w http.ResponseWriter, r *http.Request) {
	s, err := h.svc.Get(r.Context())
	if err != nil {
		respondError(w, http.StatusInternalServerError, "failed to get settings")
		return
	}
	respondJSON(w, http.StatusOK, s)
}

func (h *SettingsHandler) Update(w http.ResponseWriter, r *http.Request) {
	var in model.UserSettings
	if err := json.NewDecoder(r.Body).Decode(&in); err != nil {
		respondError(w, http.StatusBadRequest, "invalid JSON")
		return
	}
	out, err := h.svc.Update(r.Context(), in)
	if err != nil {
		if err == service.ErrInvalidSavingsGoal {
			respondError(w, http.StatusUnprocessableEntity, err.Error())
			return
		}
		respondError(w, http.StatusInternalServerError, "failed to update settings")
		return
	}
	respondJSON(w, http.StatusOK, out)
}