(ns microtables-frontend.events
  (:require
   [re-frame.core :as re-frame]
   [microtables-frontend.db :as db]
   [microtables-frontend.utils :as utils]))


(re-frame/reg-event-db
 ::initialize-db
 (fn [_ _]
   db/default-db))


(re-frame/reg-event-db
  ::movement-enter-cell
  (fn [db [_ c r]]
    (println "::movement-enter-cell" c r)
    (assoc-in db [:position :cursor] {:c c :r r})))

(re-frame/reg-event-db
  ::movement-leave-cell
  (fn [db [_ c r]]
    (let [datum (utils/get-datum (:table-data db) c r)]
      (println "::movement-leave-cell" c r "dirty?" (true? (:dirty datum)))
      (-> db
          (assoc-in [:position :cursor] nil)
          (assoc-in [:position :selection] nil)))))


(re-frame/reg-event-db
  ::edit-cell-value
  (fn [db [_ c r existing-datum value]]
    (println "::edit-cell-value" c r value)
    (if (nil? existing-datum)
      (assoc db :table-data (conj (:table-data db) {:row r :col c :value value :dirty true}))
      (assoc db :table-data (map #(if (and (= r (:row %)) (= c (:col %))) (assoc (assoc % :dirty true) :value value) %) (:table-data db))))))