(ns microtables-frontend.utils)

(defn highest [dir data] (apply max (map dir data)))

(defn increment-letter-code [s]
  (let [l (last s)]
    (cond
      (empty? s) [65]
      (= l 90) (conj (increment-letter-code (subvec s 0 (dec (count s)))) 65)
      :else (conj (subvec s 0 (dec (count s))) (inc l)))))


(defn next-letter [lc]
  (apply str (map char (increment-letter-code (mapv #(.charCodeAt % 0) lc)))))


(def col-letters (iterate next-letter "A"))