#!/usr/bin/env racket
#lang racket

(require "aoc-lib.rkt" plot)
(plot-new-window? #t)

(define data
  (aoc-fetch-leaderboard (getenv "AOC_YEAR") (getenv "AOC_LEADERBOARD") (getenv "AOC_SESSION")))

(define (hash-ref* hash path [failure (lambda () (error "no such key" path))])
  (define (->symbol el)
    (match el
      [(? string?) (string->symbol el)]
      [(? number?) (string->symbol (number->string el))]
      [(? symbol?) el]))
  (define (do-failure) (if (procedure? failure) (failure) failure))
  (match path
    ['() (do-failure)]
    [(cons (app ->symbol fst) '())
     (hash-ref hash fst failure)]
    [(cons (app ->symbol fst) rst)
     (if (hash-has-key? hash fst)
       (hash-ref* (hash-ref hash fst) rst failure)
       (do-failure))]))

(define members (hash-ref data 'members))
(define max-pts (hash-count members))
(define member-names (make-hash))

(struct tl-entry [mid day level] #:transparent)
(define timeline (make-hash))

(for ([(mid-in val) (in-hash members)])
  (define mid (string->number (symbol->string mid-in)))
  (define name (hash-ref val 'name))
  (hash-set! member-names mid name)
  (for* ([day (in-range 1 26)] [level (in-range 1 3)])
    (match (hash-ref* val (list 'completion_day_level day level 'get_star_ts) #f)
      [#f (void)]
      [(app string->number (? number? time))
       (hash-update! timeline time (lambda (v) (cons (tl-entry mid day level) v)) '())])))

(define timestamps (sort (hash-keys timeline) <))
;; vector of day to vector of part to ordered list of solvers
; (define chals (for/vector ([day (in-range 1 26)]) (make-vector 2 '())))
;
; (for ([time (in-list timestamps)])
;   (for ([solve (in-list (hash-ref timeline time))])
;     (match-define (tl-entry mid day level) solve)
;     (define old (vector-ref (vector-ref chals (sub1 day)) (sub1 level)))
;     (vector-set! (vector-ref chals (sub1 day)) (sub1 level) (append old (list mid)))))
;
; (define (total-points mem)
;   ;; day 1 is worth no points u___u
;   (for*/sum ([day (in-range 2 26)] [level (in-range 1 3)])
;     (define solves-for-day (vector-ref (vector-ref chals (sub1 day)) (sub1 level)))
;     (match (index-of solves-for-day mem)
;       [#f 0]
;       [x (- max-pts x)])))
; (total-points 1067937)

(define point-values (make-hash))
(for* ([day (in-range 1 26)] [level (in-range 1 3)])
  (hash-set! point-values (cons day level)
             (if (= day 1)
               0 ; day 1 is worth no points u___u
               max-pts)))

(define point-tls (make-hash))
(for ([(mid _) (in-hash member-names)])
  (hash-set! point-tls mid (vector)))

(define (get-last-pts data)
  (if (vector-empty? data)
    0
    (vector-ref (vector-ref data (sub1 (vector-length data))) 1)))

(define (set-pts! mid time pts)
  (hash-update! point-tls mid
                (lambda (m-tl)
                  (vector-append m-tl (vector (vector time pts))))))

(for ([time (in-list timestamps)])
  (for ([solve (in-list (hash-ref timeline time))])
    (match-define (tl-entry mid day level) solve)
    (define key (cons day level))
    (define m-tl (hash-ref point-tls mid))
    (define old-pts (get-last-pts m-tl))
    (define pts (hash-ref point-values key))
    (hash-set! point-values key (max 0 (sub1 pts)))
    (set-pts! mid time (+ old-pts pts))))

(define now (current-seconds))
(for ([(mid data) (in-hash point-tls)])
  (define pts (get-last-pts data))
  (set-pts! mid now pts))

(plot-x-ticks (date-ticks))
(plot (for/list ([(mid data) (in-hash point-tls)])
        (lines data
               #:label (hash-ref member-names mid)
               #:color mid
               #:style mid
               #:width 2))
      #:x-label "date/time"
      #:y-label "points")