Advent-of-Code/day11.lisp

;; monkeys https://adventofcode.com/2022/day/11

(defparameter *test-monkey-line*  "Monkey 0:
  Starting items: 79, 98, 101, 66
  Operation: new = old * 19
  Test: divisible by 23
    If true: throw to monkey 2
    If false: throw to monkey 3")
;;
;; so. i'd want to parse this string into list and it be a valid macro to return a monkey class
;; and have "turn" and "round" methods over the array of monkeys

(require 'cl-ppcre)
(cl-ppcre:split " " (string-upcase *test-monkey-line*))
(cl-ppcre:split "\\n" (string-upcase *test-monkey-line*))

 (defparameter num-plus-newline "9
")
(format t num-plus-newline)
(parse-integer num-plus-newline)        ; junk in string "9\\n"

(mapcar (lambda (str) (cl-ppcre:split " " (string-trim str) )) (cl-ppcre:split "\\n" (cl-ppcre:regex-replace-all ":" *test-monkey-line* " ")))
;; and now to have all numbers be translated into numbers, and works into symbols
;; to get single list?
;; or list per line i suppose

;; from "macro and compilation.lisp"
;; but, we coult treat arguments as lists where we define marco
(defmacro mix-and-match-2 ((x1 y1) (x2 y2))
  `(list '(,x1 ,y1)
           '(,x1 ,y2)
           '(,x2 ,y1)
           '(,x2 ,y2)))

(mix-and-match-2 (fred wilma) (tony bony))

;; so could have defmacro that takes in 4 lists, each is a line parsed
(string-trim " :" "  :hello: worls: ")

(mapcar (lambda (str)
          (mapcar #'parse-integer-or-symbol (cl-ppcre:split " " (string-trim " " str)))) (cl-ppcre:split "\\n" *test-monkey-line*))
;; i could first for each line to (string-trim ":," lala) if convertable to number convert to number
;; and then all stringp upcase and intern
(parse-integer "7:hello" :junk-allowed t) ; cool

(defun parse-integer-or-symbol (str)
  (let ((maybe-int (parse-integer str :junk-allowed t)))
    (if maybe-int
        maybe-int
        (intern (string-upcase str)))))

(parse-integer-or-symbol "7:")
(parse-integer-or-symbol "qer")

(defun line-to-sexp (line)
  (mapcar (lambda (str)
            (mapcar #'parse-integer-or-symbol (cl-ppcre:split " " (string-trim " " str))))
          (cl-ppcre:split "\\n" line)))

(defparameter *test-monkey-sexp* (line-to-sexp *test-monkey-line*))

((MONKEY 0)
  (STARTING |ITEMS:| 79 98 101 66)
  (|OPERATION:| NEW = OLD * 19)
  (|TEST:| DIVISIBLE BY 23)
  (IF |TRUE:| THROW TO MONKEY 2)
  (IF |FALSE:| THROW TO MONKEY 3))

(defmacro monkey-struct-to-instance (((monkey ordering-number)
                                      (starting items &rest inventory-list)
                                      (operation new eq old operation operation-number)
                                      (test divisible by divisible-number)
                                      (test tru th to monk true-monkey-number)
                                      (test fals th to monk false-monkey-number)))
  `(list 'monkey ,ordering-number 'inventory ',inventory-list 'operation '(lambda (item) (,operation item ,operation-number)) 'test ,divisible-number))

(monkey-struct-to-instance *test-monkey-sexp*)
(monkey-struct-to-instance ((MONKEY 0)
  (STARTING |ITEMS:| 79 98 101 66)
  (|OPERATION:| NEW = OLD * 19)
  (|TEST:| DIVISIBLE BY 23)
  (IF |TRUE:| THROW TO MONKEY 2)
  (IF |FALSE:| THROW TO MONKEY 3)))

(defmacro list-in-list (((first second) (third fourth)))
  `(list ,second ,fourth))
(list-in-list ((1 2) ("hello" "world")))

(nsubst *test-monkey-sexp*)

;; maybe do another macro on top of macro then?
(defmacro put-struct-into-macro (my-macro var)
  `(,my-macro ,(eval var)))

(put-struct-into-macro monkey-struct-to-instance *test-monkey-sexp*)
;; LOL, this is certainly not the way to go

;; after getting help from CL Matrix:
;; i need to use DESTRUCTURING-BIND

(defun monkey-struct-to-instance (monkey-struct)
  (destructuring-bind
      ((monkey ordering-number)
       (starting items &rest inventory-list)
       (operation new eq old operation operation-number)
       (test divisible by divisible-number)
       (test tru th to monk true-monkey-number)
       (test fals th to monk false-monkey-number)) monkey-struct
    `(list 'monkey ,ordering-number 'inventory ',inventory-list 'operation '(lambda (item) (,operation item ,operation-number)) 'test ,divisible-number)))

(monkey-struct-to-instance *test-monkey-sexp*)
;; and there's METABANG-BIND facility

;; now - have monkey class. what would connect the different data about monkey
;; and after that - initialize the array. and write functions like "step" on the monkey and "round" on the array?

;; first - let's read in a paragraph at a time?

(defparameter *11-test-input* (cl-ppcre:split "\\n\\n" (uiop:read-file-string "day11-test.txt")))
;; yay. thank you Cookbook : https://lispcookbook.github.io/cl-cookbook/files.html Reading Files
(mapcar #'monkey-struct-to-instance (mapcar #'line-to-sexp *11-test-input*))

(defclass monkey ()
    ((order-number :reader order-number :initarg :number)
     (inventory :accessor inventory :initarg :inventory)
     (operation :reader operation :initarg :operation)
     (test :reader test :initarg :test)
     (inspection-counter :reader inspection-counter :initform 0)))

(defmethod print-object ((obj monkey) stream)
      (print-unreadable-object (obj stream :type t)
        (with-accessors ((order-number order-number )
                         (inventory inventory)
                         (inspection-counter inspection-counter))
            obj
          (format stream "~a, with objects: ~a; count: ~a" order-number inventory inspection-counter))))

(defun new-from-old-function (operation operand1 operand2)
  (eval `(lambda (old)
           (,operation ,operand1 ,operand2)))) ; unhyginic macro
(funcall (new-from-old-function '+ 2 'old) 7)

;; here doing eval and defun, because macro just been inserting operand1 instead of symbod to which it references?
;; this is not good, but ok =C


(defun monkey-struct-to-instance (monkey-struct)
  (destructuring-bind
      ((monkey ordering-number)
       (starting items &rest inventory-list)
       (operation new eq operand1 operation-sign operand2)
       (test divisible by divisible-number)
       (test tru th to monk true-monkey-number)
       (test fals th to monk false-monkey-number)) monkey-struct
    (let ((operation-fun (new-from-old-function operation-sign operand1 operand2))
          (test-fun (lambda  (item-worry)
                      (if (= 0 (mod item-worry divisible-number))
                          true-monkey-number
                          false-monkey-number))))
      (make-instance 'monkey
                     :test test-fun :operation operation-fun
                     :inventory inventory-list :number ordering-number))))

(rem 7 3)
(mod 7 3)

(monkey-struct-to-instance *test-monkey-sexp*)

(defparameter *test-monkey-instance*
  (make-instance 'monkey
                 :test (lambda (num) (if (= num 4) 1 2)) :operation (lambda (num) (+ num 1))
                 :inventory '(1 2 3) :number 4))

(funcall (test *test-monkey-instance*) 6)
;; and i don't really need the ordering-number, but ok

(defparameter *11-test-structs*
  (coerce (mapcar #'monkey-struct-to-instance (mapcar #'line-to-sexp *11-test-input*)) 'vector))

;; now i want Turn and Round
;; turn - monkey iterates over all inventory.
;; inspects -
;; - apply Operation
;; - the worry / 3 ; default by player
;; - test -> return to which monkey to send
;;
;; i probably want to not tie up "turn" with array of monkeys
;; and only reference the array when codiyng up
;; round - each monkey gets a turn.
;; monkeys receive thrown items immediately when they are thrown
(lambda (worry) (* worry 13))

(funcall  (slot-value (aref *11-test-structs* 2) 'operation) 5)
(let ((old 2)) (eval (funcall '* old old)))
(funcall (test (aref *11-test-structs* 0)) 23)

;; wow. some operations are new = old * old. wow. now that's not cool
;; but can be done i think
;; yup. only with macros i guess? and unhyginic?
;; and it works, but again with eval. to create lambda from the quoted description of lambda

;; and we're back to doing the turn?
;; or do i implement methods for monkey inspect and test? ugh
(defun monkey-one-item-action (monkey)
  (let ((item-worry (first (inventory monkey) )))
    (when item-worry
      (setf (inventory monkey) (cdr (inventory monkey)))
      (setq item-worry (funcall (operation monkey) item-worry))
      (setq item-worry (floor (/ item-worry 3)))
      (incf (slot-value monkey 'inspection-counter))
      ;; returning (target-monkey-num thrown-item)
      (list (funcall (test monkey) item-worry) item-worry))))

(defparameter *test-monkey-instance*
  (make-instance 'monkey
                 :test (lambda (num) (if (= num 4) 9 8)) :operation (lambda (num) (+ num 1))
                 :inventory '(100 60 30) :number 4))
(monkey-one-item-action *test-monkey-instance*)
(inspection-counter *test-monkey-instance*)

;; ok, one step seems to work.
;; now the full Turn will return hashmap from monkey-num to list of values which to be appended to the end, so i too should append to end \ prepend + reverse
(ql:quickload 'alexandria)

(defun monkey-turn (monkey)
  (let ((thrown-hash (make-hash-table :test 'equal)))
    (loop
      for i from 1 to (length (inventory monkey))
      do (let ((throw-result (monkey-one-item-action monkey)))
           ;; (format t "~s ~%" throw-result)
           (setf (gethash (first throw-result) thrown-hash) (push (second throw-result) (gethash (first throw-result) thrown-hash)))))
    (maphash (lambda (key value-list) (setf (gethash key  thrown-hash) (reverse (gethash key thrown-hash)))) thrown-hash)
    thrown-hash))
;; returns hashmap of which values go where

(defparameter *test-monkey-turn* (monkey-turn *test-monkey-instance*))
(alexandria:hash-table-alist *test-monkey-turn*) ; looks ok, but it still should be reversed?

(alexandria:maphash-values #'reverse *test-monkey-turn*)
(reverse (gethash 8 *test-monkey-turn*))
(maphash (lambda (key value-list) (setf (gethash key  *test-monkey-turn*) (reverse (gethash key *test-monkey-turn*)))) *test-monkey-turn*)
;; so MAPHASH and MAPHASH-VALUES do not change hashmap, ugh

(defparameter *test-hash* (make-hash-table :test 'equal))
(defparameter *test-hash* '(1))
(push 11 (gethash "hello" *test-hash*))
(push 11 *test-hash*)
(setf (gethash "hello" *test-hash*) (push 11 (gethash "hello" *test-hash*)))
(setf (gethash "why" *test-hash*) 11)
;; wtf. why setf doesn't change content of hash key?
;; well, that's because I use `eq for comparison. hello

;; now have function for MONKEY-TURN, returning hashmap of transferred items
(append '(1 2 3) '(5 6))

(defun monkeys-round (monkey-array)
  ;; for each monkey from array:
  ;; do it's turn, then for each record in resulting hashmap append list of transferred items to correct monkey
  (loop
    for monkey across monkey-array
    do (let ((turn-result (monkey-turn monkey)))
         (maphash
          (lambda (target-monkey-num items-list)
            (setf (inventory (aref monkey-array target-monkey-num)) (append (inventory (aref monkey-array target-monkey-num)) items-list)))
          turn-result))))

;; and now yolo try to run 20 rounds on test monkey array?

;; wait. I also need to cound "how many items did each monkey inspected"
;; let's keep it for tomorrow, ugh

;; on the next task, i'll start separating my daily scratch and final code
;; it's too much noise between the code
;; ok, added that

(defparameter *11-test-structs*
  (coerce (mapcar #'monkey-struct-to-instance (mapcar #'line-to-sexp *11-test-input*)) 'vector))
(monkeys-round *11-test-structs*)

(loop
  for i from 1 to 20
  do (monkeys-round *11-test-structs*))

(sort (mapcar #'inspection-counter (coerce *11-test-structs* 'list)) #'>)

;; PART 1 on input data

(defparameter *11-input-paragraphs* (cl-ppcre:split "\\n\\n" (uiop:read-file-string "day11-input.txt")))

(defparameter *11-input-structs*
  (coerce (mapcar #'monkey-struct-to-instance (mapcar #'line-to-sexp *11-input-paragraphs*)) 'vector))

(loop
  for i from 1 to 20
  do (monkeys-round *11-input-structs*))

(sort (mapcar #'inspection-counter (coerce *11-input-structs* 'list)) #'>)
;; 329 305
(* 329 305)
(apply #'* (subseq (sort (mapcar #'inspection-counter (coerce *11-input-structs* 'list)) #'>) 0 2))

;;; PART 2.