hackerbase/src/brmember.scm

611 lines
17 KiB
Scheme

;;
;; brmember.scm
;;
;; Procedures working with complete member record (as loaded by the
;; members-base).
;;
;; ISC License
;;
;; Copyright 2023 Brmlab, z.s.
;; Dominik Pantůček <dominik.pantucek@trustica.cz>
;;
;; Permission to use, copy, modify, and/or distribute this software
;; for any purpose with or without fee is hereby granted, provided
;; that the above copyright notice and this permission notice appear
;; in all copies.
;;
;; THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
;; WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
;; WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
;; AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR
;; CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
;; OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
;; NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
;; CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
;;
(declare (unit brmember))
(module
brmember
(
TAG-BRMEMBER
make-brmember
brmember?
brmember-file-name
brmember-file-path
brmember-input-file
brmember-set
brmember-add-highlight
brmember-sub-ref
brmember-sub-set
brmember-sub-prepend
brmember-sub-has-key?
brmember-sub-ensure
brmember-source
brmember-info
brmember-missing-keys
brmember-has-highlights?
brmember-usable?
brmember-in-dokuwiki?
brmember-dokuwiki-groups-ok?
brmember-has-problems?
brmember-file-has-problems?
brmember-destroyed?
brmember-suspended?
brmember-active?
brmember-student?
brmember-existing?
brmember-chair?
brmember-council?
brmember-revision?
brmember-grant?
brmember-flags
brmember-nick
brmember-id
brmember-suspended-months
brmember-suspended-for
brmember<?
brmember-add-payment
brmember-payments
brmember-credit
brmember-mailman
brmember-add-mailman
brmember-spec-fee
brmember-age
brmember-tests!
)
(import scheme
(chicken base)
(chicken keyword)
(chicken irregex)
(chicken string)
(chicken format)
srfi-1
util-bst-ldict
testing
cal-month
cal-period
configuration
primes
bank-account
util-tag)
;; Unique tag
(define TAG-BRMEMBER (make-tag brmember))
;; Checks whether given string is a 4-digit decimal number.
(define (is-4digit-string? s)
(if (irregex-search (irregex "^[0-9]{4}$") s)
#t
#f))
;; checks whether given symbol is a 4-digit one.
(define (is-4digit-symbol? s)
(is-4digit-string?
(symbol->string s)))
;; Returns the first 4-digit symbol from the list.
(define (get-4digit-symbol-from-list lst)
(let loop ((lst lst))
(if (null? lst)
#f
(if (is-4digit-symbol? (car lst))
(car lst)
(loop (cdr lst))))))
;; Creates new member record based on the file and symlinks
;; information received from the members directory. Any keyword
;; arguments are converted to respective symbols in the dictionary.
(define (make-brmember file-name file-path symlinks . args)
(let loop ((args args)
(pairs `((file-name . ,file-name)
(file-path . ,file-path)
(symlinks . ,symlinks)
(id . ,(string->number
(symbol->string
(get-4digit-symbol-from-list (cons file-name symlinks))))))))
(if (null? args)
(make-ldict (cons (cons 'TAG TAG-BRMEMBER)
pairs))
(if (not (keyword? (car args)))
(error 'make-brmember "Optional arguments must be keywords" (car args))
(if (null? (cdr args))
(error 'make-brmember "Each optional keyword argument must have a value" (car args))
(loop (cddr args)
(cons (cons (string->symbol (keyword->string (car args)))
(cadr args))
pairs)))))))
;; Predicate
(define (brmember? v)
(and (ldict? v)
(eq? (ldict-ref v 'TAG #f) TAG-BRMEMBER)))
;; File name without directory
(define (brmember-file-name mr)
(ldict-ref mr 'file-name))
;; Convenience accessor for file name with directory
(define (brmember-file-path mr)
(ldict-ref mr 'file-path))
;; Returns opened input file for this record (used by parser).
(define (brmember-input-file mr)
(open-input-file
(ldict-ref mr 'file-path)))
;; Sets pairs of keys/values for given member record.
(define (brmember-set mr . args)
(let loop ((args args)
(mr mr))
(if (null? args)
mr
(if (not (keyword? (car args)))
(error 'brmember-set "Needs argument keyword" (car args))
(if (null? (cdr args))
(error 'brmember-set "Argument needs value" (car args))
(loop (cddr args)
(ldict-set mr (string->symbol (keyword->string (car args)))
(cadr args))))))))
;; Adds highlight identified by line number, message, pass number and
;; type (error, warning, info).
(define (brmember-add-highlight mr line-number message pass type)
(ldict-set mr 'highlights
(cons (list line-number message pass type)
(ldict-ref mr 'highlights '()))))
;; Returns a key from particular section
(define (brmember-sub-ref mr sec key . defaults)
(let ((sec-dict (ldict-ref mr sec)))
(if (null? defaults)
(ldict-ref sec-dict key)
(ldict-ref sec-dict key (car defaults)))))
;; Sets a key in particular section
(define (brmember-sub-set mr sec key val)
(let ((sec-dict (ldict-ref mr sec)))
(ldict-set mr sec
(ldict-set sec-dict key val))))
;; Prepends value to given subkey
(define (brmember-sub-prepend mr sec key val)
(brmember-sub-set mr sec key
(cons val
(brmember-sub-ref mr sec key '()))))
;; Returns true if given section contains given key
(define (brmember-sub-has-key? mr sec key)
(ldict-contains? (ldict-ref mr sec) key))
;; Returns new member record with section updated by defaults, the
;; section must already exist.
(define (brmember-sub-ensure mr sec . kvs)
(let loop ((kvs kvs)
(sd (ldict-ref mr sec)))
(if (null? kvs)
(ldict-set mr sec sd)
(if (null? (cdr kvs))
(error 'brmember-sub-ensure "Needs pairs of keys and values" kvs)
(let ((key (car kvs))
(val (cadr kvs)))
(loop (cddr kvs)
(if (ldict-contains? sd key)
sd
(ldict-set sd key val))))))))
;; Returns source lines
(define (brmember-source mr)
(ldict-ref mr 'source '()))
;; Returns member info key value
(define (brmember-info mr key . defaults)
(let ((info (ldict-ref mr 'info #f)))
(if info
(if (null? defaults)
(ldict-ref info key)
(ldict-ref info key (car defaults)))
(if (null? defaults)
(error 'brmember-info "Info key is missing.")
(car defaults)))))
;; Return mandatory keys with #f as value
(define (brmember-missing-keys mr)
(ldict-reduce '()
(lambda (acc k v)
(if v acc (cons k acc)))
(ldict-ref mr 'info)))
;; True if there are any source highlights
(define (brmember-has-highlights? mr)
(ldict-contains? mr 'highlights))
;; Returns true if there is at least one highlight of given type
(define (member-highlights-has-type? mr type)
(let loop ((hls (ldict-ref mr 'highlights '())))
(if (null? hls)
#f
(if (eq? (cadddr (car hls)) type)
#t
(loop (cdr hls))))))
;; Returns true if there is at least one highlight with error type
(define (member-has-errors? mr)
(member-highlights-has-type? mr 'error))
;; Absolutely required
(define (brmember-usable? mr)
(ldict-contains? (ldict-ref mr 'info) 'member))
;; Returns #t if this member is in dokuwiki
(define (brmember-in-dokuwiki? mr)
(ldict-contains? mr 'dokuwiki))
;; Returns #t if this member email is the same as the one in dokuwiki
(define (brmember-dokuwiki-email-ok? mr)
(let ((dw (ldict-ref mr 'dokuwiki #f)))
(if (eq? dw #t)
#t
(if dw
(let ((email (brmember-info mr 'mail 0))
(memail (ldict-ref dw 'email 1)))
(equal? email memail))
#f))))
;; Returns #t if this member is in "member" group in dokuwiki.
(define (brmember-dokuwiki-groups-ok? mr)
(let ((dw (ldict-ref mr 'dokuwiki #f)))
(if (eq? dw #t)
#t
(if dw
(let ((groups (ldict-ref dw 'groups '())))
(and
;; member
(or (and (member "member" groups)
(brmember-existing? mr))
(and (not (member "member" groups))
(not (brmember-existing? mr))))
;; council, admin
(or (and (or (member "council" groups)
(member "admin" groups))
(brmember-existing? mr)
(or (brmember-council? mr)
(brmember-chair? mr)
(brmember-revision? mr)))
(and (not (or (member "council" groups)
(member "admin" groups)))
(or (not (brmember-existing? mr))
(not (or (brmember-council? mr)
(brmember-chair? mr)
(brmember-revision? mr))))))
))
(not (brmember-existing? mr))))))
;; True if member record is not OK
(define (brmember-has-problems? mr)
(or (member-has-errors? mr)
(not (null? (brmember-missing-keys mr)))
(not (brmember-usable? mr))
(not (is-4digit-prime? (brmember-id mr)))
(and (not (brmember-destroyed? mr))
(not (brmember-in-dokuwiki? mr)))
(and (not (brmember-destroyed? mr))
(not (brmember-dokuwiki-email-ok? mr)))
(not (brmember-dokuwiki-groups-ok? mr))
))
;; True if member record is not OK
(define (brmember-file-has-problems? mr)
(or (member-has-errors? mr)
(not (null? (brmember-missing-keys mr)))
(not (brmember-usable? mr))
(not (is-4digit-prime? (brmember-id mr)))
))
;; Returns true if the member record represents non-existing
;; member. The *current-month* is a global parameter from period
;; module.
(define (brmember-destroyed? mr)
(and (not (brmember-existing? mr))
(let ((member (brmember-info mr 'member)))
(if (null? member)
#f
(cal-month>=? (*current-month*)
(cal-period-since (car member)))))))
;; Generic period-based predicate
(define ((member-period-predicate? key) mr)
(let ((periods (brmember-info mr key #f)))
(and periods
(cal-month-in-periods? periods))))
;; Returns true if the member is now suspended
(define member-is-suspended?
(member-period-predicate? 'suspend))
;; Suspended must not be destroyed
(define (brmember-suspended? mr)
(and (member-is-suspended? mr)
(not (brmember-destroyed? mr))))
;; True if the member is student
(define member-is-student?
(member-period-predicate? 'student))
;; Only active members can be students.
(define (brmember-student? mr)
(and (brmember-active? mr)
(member-is-student? mr)))
;; Returns true if the member is active (not suspended or destroyed).
(define (brmember-active? mr)
(and (cal-month-in-periods? (brmember-info mr 'member))
(not (brmember-suspended? mr))))
;; Returns true if the member is currently a member
(define (brmember-existing? mr)
(cal-month-in-periods?
(brmember-info mr 'member)))
;; Returns predicate for given organizational body membership
(define (brmember-body? body)
(lambda (mr)
(cal-day-in-periods?
(brmember-info mr body '()))))
;; Predicates for all organizational bodies recognized
(define brmember-chair? (brmember-body? 'chair))
(define brmember-council? (brmember-body? 'council))
(define brmember-revision? (brmember-body? 'revision))
(define brmember-grant? (brmember-body? 'grant))
;; Returns a list of flags of given member record.
(define (brmember-flags mr)
(filter identity
(list (if (brmember-student? mr) 'student #f)
(if (brmember-suspended? mr) 'suspended #f)
(if (brmember-active? mr) 'active #f)
(if (brmember-destroyed? mr) 'destroyed #f)
(if (brmember-existing? mr) 'existing #f)
(if (brmember-chair? mr) 'chair #f)
(if (brmember-council? mr) 'council #f)
(if (brmember-revision? mr) 'revision #f)
(if (brmember-grant? mr) 'grant #f)
)))
;; Nickname as string
(define (brmember-nick mr)
(brmember-info mr 'nick))
;; Returns member id
(define (brmember-id mr)
(ldict-ref mr 'id))
;; Returns the number of months the user is suspended. Zero if not
;; suspended.
(define (brmember-suspended-months mr)
(if (brmember-suspended? mr)
(let ((period (cal-periods-match (brmember-info mr 'suspend))))
(if period
(cal-month-diff (cal-ensure-month (cal-period-since period))
(*current-month*))
0))
0))
;; Creates configured predicate for the number of months the member
;; is suspended for.
(define (brmember-suspended-for at-least . less-thans)
(let ((less-than (if (null? less-thans)
#f
(car less-thans))))
(lambda (mr)
(let ((months (brmember-suspended-months mr)))
(and (>= months at-least)
(or (not less-than)
(< months less-than)))))))
;; Comparator of member records based on nickname.
(define (brmember<? a b)
(string-ci<? (brmember-nick a)
(brmember-nick b)))
;; Prepends new payment to given member record payments
(define (brmember-add-payment mr pt)
(ldict-set mr 'payments
(cons pt
(ldict-ref mr 'payments '()))))
;; Returns a list of member payments
(define (brmember-payments mr)
(filter (lambda (tr)
(let* ((isodate (bank-transaction-date tr))
(month (iso-date->cal-month isodate)))
(cal-month<=? month (*current-month*))))
(ldict-ref mr 'payments '())))
;; Returns credit records - respects *current-month*
(define (brmember-credit mr)
(filter (lambda (cr)
(let* ((cmon (cadr cr))
(mon (if cmon
(cal-ensure-month cmon)
#f)))
(if mon
(cal-month<=? mon (*current-month*))
#t)))
(brmember-info mr 'credit '())))
;; Returns a list of MLs this member is subscribed to
(define (brmember-mailman mr)
(ldict-ref mr 'mailman '()))
;; Adds given ML to given member record
(define (brmember-add-mailman mr ml)
(ldict-set mr 'mailman
(cons ml
(brmember-mailman mr))))
;; Returns special fee for current month or #f if it should be default
(define (brmember-spec-fee mr)
(let ((fee-periods (brmember-info mr 'fee #f)))
(if fee-periods
(let ((fee-period (cal-month-find-period fee-periods)))
(if fee-period
(let ()
(car (cal-period-scomment fee-period)))
#f))
#f)))
(define (brmember-age mr)
(let ((born (brmember-info mr 'born #f)))
(if born
(let ((lst (string-split born "-")))
(if (null? lst)
#f
(let ((y (string->number (car lst))))
(if y
(- (current-year) y)
#f))))
#f)))
;; Self-tests
(define (brmember-tests!)
(run-tests
brmember
(test-true make-brmember
(ldict-equal?
(make-brmember '|1234| "members/1234" '(|member|))
(make-ldict
`((TAG . ,TAG-BRMEMBER)
(file-name . |1234|)
(file-path . "members/1234")
(symlinks |member|)
(id . 1234)))))
(test-true make-brmember
(ldict-equal?
(make-brmember '|1234| "members/1234" '(|member|) #:msg "msg")
(make-ldict
`((msg . "msg")
(TAG . ,TAG-BRMEMBER)
(file-name . |1234|)
(file-path . "members/1234")
(symlinks |member|)
(id . 1234)))))
(test-true brmember-set
(ldict-equal?
(brmember-set (make-ldict) #:id 1234)
(make-ldict
'((id . 1234)))))
(test-true brmember-add-highlight
(ldict-equal?
(brmember-add-highlight (make-ldict) 123 "Interesting..." 0 'info)
(make-ldict
'((highlights . ((123 "Interesting..." 0 info)))))))
(test-true brmember-destroyed?
(with-current-month
(make-cal-month 2023 2)
(brmember-destroyed?
(make-ldict `((info . ,(make-ldict
`((member . (,(make-cal-period
(make-cal-month 2010 1)
(make-cal-month 2010 5))))))))))))
(test-false brmember-destroyed?
(with-current-month
(make-cal-month 2009 2)
(brmember-destroyed?
(make-ldict `((info . ,(make-ldict
`((member . (,(make-cal-period
(make-cal-month 2001 1)
(make-cal-month 2010 5))))))))))))
(test-false brmember-suspended?
(brmember-suspended?
(make-ldict `((info . ,(make-ldict
`((member . (,(make-cal-period
(make-cal-month 2015 1)
#f))))))))))
(test-true brmember-suspended?
(with-current-month
(make-cal-month 2015 2)
(brmember-suspended?
(make-ldict `((info . ,(make-ldict
`((member . (,(make-cal-period
(make-cal-month 2015 1)
#f)))
(suspend ,(make-cal-period
(make-cal-month 2010 1)
(make-cal-month 2022 4) #f #f))))))))))
(test-true brmember-suspended?
(with-current-month
(make-cal-month 2015 2)
(brmember-suspended?
(make-ldict `((info . ,(make-ldict
`((member . (,(make-cal-period
(make-cal-month 2015 1)
#f)))
(suspend (make-cal-period
(make-cal-month 2010 1)
#f #f #f))))))))))
(test-false brmember-suspended?
(with-current-month
(make-cal-month 2023 2)
(brmember-suspended?
(make-ldict `((info . ,(make-ldict
`((member . (,(make-cal-period
(make-cal-month 2015 1) #f)))
(suspend ,(make-cal-period
(make-cal-month 2010 1)
(make-cal-month 2022 4)
#f #f))))))))))
(test-true brmember-active?
(with-current-month
(make-cal-month 2023 2)
(brmember-active?
(make-ldict `((info . ,(make-ldict
`((member . (,(make-cal-period
(make-cal-month 2015 1)
#f)))
(suspend ,(make-cal-period
(make-cal-month 2010 1)
(make-cal-month 2022 4)
#f #f))))))))))
))
)