;;; guile-xapian --- Guile bindings for Xapian
;;; Copyright © 2026 Arun Isaac <arunisaac@systemreboot.net>
;;;
;;; This file is part of guile-xapian.
;;;
;;; guile-xapian is free software: you can redistribute it and/or
;;; modify it under the terms of the GNU General Public License as
;;; published by the Free Software Foundation, either version 2 of the
;;; License, or (at your option) any later version.
;;;
;;; guile-xapian is distributed in the hope that it will be useful,
;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
;;; General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with guile-xapian.  If not, see
;;; <https://www.gnu.org/licenses/>.

(use-modules (rnrs io ports)
             (srfi srfi-26)
             (srfi srfi-64)
             (ice-9 match)
             (ice-9 popen))

(define (call-with-input-pipe command proc)
  "Call @var{proc} with input pipe to @var{command}. @var{command} is a
list of program arguments."
  (match command
    ((prog args ...)
     (let ((port #f))
       (dynamic-wind
         (lambda ()
           (set! port (apply open-pipe* OPEN_READ prog args)))
         (cut proc port)
         (lambda ()
           (unless (zero? (close-pipe port))
             (error "Command invocation failed" command))))))))

(define (search . query)
  (call-with-input-pipe (cons* "guile" "examples/search.scm" "/tmp/db" query)
    (lambda (port)
      ;; port-transduce might be shorter and more preferable. But we'd
      ;; like to support guile 2.2, and port-transduce does not exist
      ;; in guile 2.2.
      (let loop ((result '()))
        (let ((line (get-line port)))
          (if (eof-object? line)
              (reverse result)
              (loop (cons line result))))))))

(test-begin "examples")

(test-equal "index"
  0
  (status:exit-val
   (system* "guile"
            "examples/index.scm"
            "examples/100-objects.sexp"
            "/tmp/db")))

(test-equal "search watch"
  (list "0: #004 Watch with Chinese duplex escapement"
        "1: #018 Solar/Sidereal verge watch with epicyclic maintaining power"
        "2: #013 Watch timer by P"
        "3: #033 A device by Favag of Neuchatel which enables a stop watch to"
        "4: #015 Ingersoll \"Dan Dare\" automaton pocket watch with pin-pallet"
        "5: #036 Universal 'Tri-Compax' chronographic wrist watch"
        "6: #046 Model by Dent of mechanism for setting hands and winding up")
  (search "watch"))

(test-equal "search Dent watch"
  (list "0: #046 Model by Dent of mechanism for setting hands and winding up"
        "1: #004 Watch with Chinese duplex escapement"
        "2: #018 Solar/Sidereal verge watch with epicyclic maintaining power"
        "3: #013 Watch timer by P"
        "4: #094 Model of a Lever Escapement , 1850-1883"
        "5: #093 Model of Graham's Cylinder Escapement, 1850-1883"
        "6: #033 A device by Favag of Neuchatel which enables a stop watch to"
        "7: #015 Ingersoll \"Dan Dare\" automaton pocket watch with pin-pallet"
        "8: #086 Model representing Earnshaw's detent chronometer escapement, 1950-1883"
        "9: #036 Universal 'Tri-Compax' chronographic wrist watch")
  (search "Dent" "watch"))

(test-equal "search title:sunwatch"
  (list "0: #001 Ansonia Sunwatch (pocket compas dial)")
  (search "title:sunwatch"))

(test-equal "search description:\"leather case\" AND title:sundial"
  (list "0: #055 Silver altitude sundial in leather case"
        "1: #084 Magnetic sundial in brass case")
  (search "description:leather case" "AND" "title:sundial"))

(test-end "examples")