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#lang racket/base
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(require racket/dict
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racket/match
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"sku.rkt")
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(provide (all-defined-out)
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(all-from-out "sku.rkt"))
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(define (round-cents float)
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(/ (floor (* float 100)) 100))
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(define (round-up inc x)
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(* (ceiling (/ x inc)) inc))
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(define (calc-multi-price base-price people)
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(round-cents
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(sub1 (round-up 10 (case people
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[(1 2) base-price]
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[(5) (* base-price 2)]
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[(10) (* base-price 3)]
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[(20) (* base-price 4)]
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[(40) (* base-price 5)]
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[(60) (* base-price 6)]
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[(80) (* base-price 7)]
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[else (error "Too many people")])))))
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(define (calc-multi-license sku people)
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(define base-price (sku-base-price sku))
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(calc-multi-price base-price people))
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(define license-increments '(1 2 5 10 20 40 60 80))
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(define (make-price-list base-price)
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(map (λ(n) (cons n (calc-multi-license base-price n))) license-increments))
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(define (get-price sku [people 1])
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(with-handlers ([exn:fail? (λ(e) (get-price sku (add1 people)))])
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(calc-multi-license sku people)))
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(define (get-variant-id sku which)
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(dict-ref (sku-variant-ids sku) which))
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(define (bc-url item-number)
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(format "http://typo.la/bc.html?item=~a" item-number))
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(define (make-buy-url sku which)
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(bc-url (get-variant-id sku which)))
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(define (grid->table grid)
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(define (table-row row [cell-tag 'td])
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`(tr (th ((style "width:40%")) ,(car row)) ,@(map (λ(c) `(,cell-tag ,c)) (cdr row))))
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(define (table-header row)
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(table-row row 'th))
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`(table ((class "buy-table"))
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,(table-header (car grid))
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,@(map table-row (cdr grid))))
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(define (people->string p)
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(string-append (match p
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[2 "1–2"]
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[5 "3–5"]
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[10 "6–10"]) " people"))
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(require txexpr racket/string)
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(define (textify x)
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(cond
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;; convert nbsp to string
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[(string? x) (string-replace x #px"[\\s#\u00A0]+" " ")]
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[(eq? 'nbsp x) " "]
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[(list? x) (string-append* (map textify (if (txexpr? x)
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(get-elements x)
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x)))]))
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(module+ test
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(require rackunit)
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(check-equal?
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(textify
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'(span (a ((href "equity.html")) "Equity") " + " (a ((href "concourse.html")) "Concourse Standard") " + " (a ((href "triplicate.html")) "Triplicate")))
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"Equity + Concourse Standard + Triplicate"))
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(define (buy-link sku people)
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(define price (get-price sku people))
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(define item (textify (sku-name sku)))
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`(a ((class "checkout_clicker")
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(href "#")
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(item ,item)
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(label ,(format "~a (~a-person license)" item people))
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(quantity ,(number->string people))
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(amount ,(number->string price))
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(success "/order-success.html")
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(failure "/order-failure.html"))
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,(format "$~a" price)))
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(define (make-buy-grid #:people people-list #:skus sku-list)
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(cons
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(cons "" (map people->string people-list))
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(map (λ(sku) (cons (sku-name sku)
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(map (λ(p) (buy-link sku p)) people-list))) sku-list)))
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(define (make-buy-table #:people [people-list '(2 5 10)] #:skus sku-list)
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(grid->table (make-buy-grid #:people people-list #:skus sku-list)))
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