(ns adventofcode2019.lib
  [:require [clojure.string :as str]
   [clojure.edn :as edn]
   [clojure.java.io :as io]
   [clojure.java.shell :refer [sh]]])

(defn get-list-from-file
  ([file-name]
   (str/split-lines (str/trim (slurp file-name))))
  ([file-name split-regex]
   (str/split (str/trim (slurp file-name)) split-regex)))

(defn parse-int [n]
  (let [n-val (edn/read-string n)]
    (if (number? n-val)
      n-val
      (throw (Exception. "Not a number!")))))

(defmacro input-file []
  (let [bottom-ns (last (str/split (str *ns*) #"\."))]
    (str "resources/" bottom-ns)))

(defn manhattan-distance [[ax ay] [bx by]]
  (+ (Math/abs (- ax bx))
     (Math/abs (- ay by))))

(defn mmap [f m]
  (zipmap (keys m) (map f (vals m))))

(def part1
  #(println (str "Part 1: " %)))
(def part2
  #(println (str "Part 2: " %)))

;; FIXME: this is still broken but i give up for now
; (defn --input-file [for-ns]
;   (let [bottom-ns (last (str/split for-ns #"\."))
;         input-url "https://adventofcode.com/2019/day/%d/input"
;         day-url (->> bottom-ns
;                      (drop 3)
;                      (str/join)
;                      (parse-int)
;                      (format input-url))
;         token (str/trim (slurp (io/resource "token")))
;         res-dir (-> (io/resource "token") 
;                     (.getPath)
;                     (str/replace "token" bottom-ns))
;         cmd ["curl" "-s" "-b" 
;              (format "\"session=%s\"" token) 
;              day-url ">" res-dir]]
;     (if-let [input (io/resource bottom-ns)]
;             input
;             (do (apply sh cmd) nil))))

; (defmacro input-file []
;   (--input-file (str *ns*)))