(use Int)
(use Double)
(use Float)
(use Array)
(use IO)
(Project.no-echo)

(defn fib [n]
  (if (< n 2)
    1
    (+ (fib (dec (dec n)))
       (fib (dec n)))))

(defmodule Things
  (defn inside [s]
    (let [msg (String.append s "!")]
      (println (ref msg))))
  (defn call []
    (inside "Hello")))

(defn use-doubles []
  (println (ref (str (Double.to-int (Double.+ 2.0 3.0))))))

(deftype Person
    [name String
     age Int])

(defn use-person []
  (let [me (Person.init (String.copy "Erik") 30)]
    (println (Person.name (ref me)))))

;; (defn heap-allocations []
;;   (let [friend (Person.new (String.copy "Oscar") 30)]
;;     ()))

(defn refer-up []
  (let [a 10
        b (+ a 5)
        c (* a b)]
    c))

(deftype Thing
    [val Int])

(defn set-stuff-in-array []
  (let [xs [0 1 2 3 4 5 6 7 8 9]]
    (do
      (aset! &xs 4 666)
      (println (ref (str (ref xs)))))))

(defn more-array []
  (let [xs [1 2 3 4]
        xs2 (pop-back xs)]
    (do
      (println (refstr &(push-back xs2 500))))))

(defn using-the-form-to-specialize [x y]
  (+ x (the Double y)))

(defn flip []
  (random-between 0 2))

(defn macrooo []
  (let [msg "Print!"]
        (cond
          (< 10 1) (println "Don't print!")
          (> 10 1) (println msg)
          (println "Don't print!"))))

(defn macrooo2 []
  (for [x 1 3]
    (for [y 10 100 20]
      (println (ref (str (* x y)))))))

(deftype A [s String])
(use A)

(deftype Peep [x Int
               y String
               z A])
(use Peep)

(defn calling-delete []
  (let [plupp (Peep.init 10 (String.copy "PLUPP") (A.init (String.copy "w00t")))
        poop [(Peep.init 10 (String.copy "hej") (A.init (String.copy "aha")))]
        strings [(String.copy "a") (String.copy "b") (String.copy "c")]]
      (do
        (delete plupp)
        (delete poop)
        (Array.delete strings))))

(defn updating []
  (let [p1 (Peep.init 9999 (String.copy "jaha") (A.init (String.copy "mmm")))
        p2 (Peep.update-x p1 &inc)]
    (println (ref (str @(Peep.x (ref p2)))))))

(defn character []
  (println (ref (Char.str \#))))

(defn negative-numbers []
  (let [x -10.0 y -20.0f z -30]
    (* (* (to-int x) (to-int y)) z)))

(defn square [x]
  (Int.* x x))

(defn endofunctor-mapping []
  (let [stuff [1 2 3 4 5]
        after (endo-map &square stuff)]
    (println (refstr &after))))

(defn even? [x]
  (= (Int.mod @x 2) 0))

(defn add-with-ref [x y]
  (Int.+ x @y))

(defn square-reffed [x]
  (Int.* @x @x))

(defn map-filter-reduce-stuff []
  (let [stuff [3 5 8 9 10]
        after (reduce &add-with-ref 0 &(copy-map &square-reffed &(endo-filter &even? stuff)))]
    (do
      (print "ANSWER: ")
      (println (refstr after)))))

(defn get-last-string [xs] ;; Should be generic preferably...
  (let [i (dec (Array.length &xs))]
    (String.copy (Array.unsafe-nth &xs i))))

(defn print-last-string []
  (println &(get-last-string [(String.copy "NO") (String.copy "NO") (String.copy "YES")])))

(defn exclaim [x] (String.append &x "!"))

(deftype Simple [])
(deftype Complex [x Int f Float d Double s String c Char])

(defn print-structs []
  (let [s (Simple.init)
        c (Complex.init 12345 3.14f 99.99 @"yo" \x)]
    (do
      (println (ref (Simple.str &s)))
      (println (ref (Complex.str &c))))))

(deftype Inner [])
(deftype Outer [as (Array Inner)])
(defn convert-struct-with-array-member-to-string []
  (let [b (Outer.init [(Inner.init) (Inner.init) (Inner.init)])]
    (println (ref (Outer.str &b)))))

(defn random-float []
  (Float.random-between 10.0f 20.0f))

(defn print-random-floats []
  (do (Random.seed-from 0.2)
      (let [rands (Array.repeat 10 &random-float)]
        (println (ref (Array.str &rands))))))

(deftype Age [x Int])

(defn multiple-stringification-of-arrays []
  (let-do [ints [10 3 75 40]
           ages [(Age.init 10) (Age.init 3) (Age.init 75) (Age.init 40)]]
    (IO.println &(str &ints))
    (IO.println &(str &ages)) ;; this used to be a problem
    ))

(defn threading []
  (do
    (print "(==> 8 inc inc (Int./ 100) dec) = ")
    (println (refstr (==> 8 inc inc (Int./ 100) dec)))
    (print "(=> 8 inc inc (Int./ 2) dec) = ")
    (println (refstr (=> 8 inc inc (Int./ 2) dec)))
    (print "(==> 5 (Int.- 2)) = ")
    (println (refstr (==> 5 (Int.- 2))))
    (print "(=> 5 (Int.- 2)) = ")
    (println (refstr (=> 5 (Int.- 2))))
    ))

;; This used to be a bug becuase of multisym:s getting the same type variables:
(defn two-lengths-in-same-func []
  (let [a [[1]]
        b [1 2 3]
        c1 (Array.length &a)
        c2 (Array.length &b)]
    (println* (+ c1 c2))))

(defn changing-target-of-ref []
  (let [s1 @"hello"
        s2 @"goodbye"
        r &s1]
    (do (set! r &s2)
        (IO.println r))))

(defn resolve-correctly []
  (let [words (words "a bb ccc dddd eeeee")]
    (println* (unsafe-nth &words 2))))

(defn main []
  ; here we always use the same seed for determinism, for simple random
  ; numbers that change you can for instance use (System.time)
  (do (Random.seed-from 0.1)
      (Things.call)
      (use-doubles)
      (println (ref (str (fib 10))))
      (use-person)
      ;;(heap-allocations)
      (println (ref (str (refer-up))))
      (println (ref (str (ref [10 20 30 40 50]))))
      ;;(println (ref (str (ref (endo-map Thing.val [(Thing.init 100) (Thing.init 200)])))))
      (println (ref (str (Int.mod 30 7))))
      (set-stuff-in-array)
      (more-array)
      (macrooo)
      (macrooo2)
      ;;(println (ref (str (ref (repeat 10 flip))))) <- BUGGY see github issue #227
      (calling-delete)
      (updating)
      (character)
      (println (ref (str (negative-numbers))))
      (endofunctor-mapping)
      (map-filter-reduce-stuff)
      (print-last-string)
      (let [stuff (replicate 3 "Yo")]
        (println &(Array.str &(endo-map &exclaim stuff))))
      (print-structs)
      ;;(print-random-floats) <- BUGGY see github issue #227
      ;;(turn-any-array-into-string) <- BUGGY FOR NOW!
      (convert-struct-with-array-member-to-string)
      (threading)
      (multiple-stringification-of-arrays)
      (two-lengths-in-same-func)
      (changing-target-of-ref)
      (resolve-correctly)
      ))