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#lang racket/base

; SPDX-License-Identifier: BlueOak-1.0.0
; This file is licensed under the Blue Oak Model License 1.0.0.

(require deta
         db/base
         db/sqlite3
         threading
         racket/match
         racket/string
         txexpr
         pollen/template
         (except-in pollen/core select) ; avoid conflict with deta
         )

(require "dust.rkt" "cache.rkt" "snippets-html.rkt")

(provide parse-and-cache-article!
         cache-series!)

;; Save an article and its notes (if any) to the database, and return the
;; rendered HTML of the complete article.
;; Save an article and its notes (if any) to the database, and return 
;; (values plain-title [rendered HTML of the complete article])
(define (parse-and-cache-article! pagenode doc)
  (define-values (doc-no-title maybe-title)
    (splitf-txexpr doc (make-tag-predicate 'title)))
  (define-values (body-txpr note-txprs)
    (splitf-txexpr doc-no-title (make-tag-predicate 'note)))
  (define-values (disposition disp-note-id)
    (notes->last-disposition-values note-txprs))
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                                               disposition
                                               disp-note-id
                                               (length note-txprs))]
         [footer (html$-article-close footertext)]
         [listing-short (html$-article-listing-short pagenode pubdate title-html)]
         [notes-section-html (cache-notes! pagenode title-plain note-txprs)])
    (cache-index-entries! pagenode doc) ; note original doc is used here
    (current-plain-title title-plain)
    (delete-article! pagenode)
    (insert-one! (cache-conn)
                 (make-cache:article
                  #:page pagenode
                  #:title-plain title-plain
                  #:title-html-flow title-html
                  #:title-specified? title-specified?
                  #:published pubdate
                  #:updated (maybe-meta 'updated)
                  #:author (maybe-meta 'author default-authorname)
                  #:conceal (maybe-meta 'conceal)
                  #:series-page series-node
                  #:noun-singular (maybe-meta 'noun (series-metas-noun))
                  #:note-count (length note-txprs)
                  #:doc-html doc-html
                  #:disposition disposition
                  #:disp-html-anchor disp-note-id
                  #:listing-full-html (string-append header doc-html footer)
                  #:listing-excerpt-html ""
                  #:listing-short-html listing-short))
    (string-append header doc-html notes-section-html footer)))
    (values title-plain (string-append header doc-html notes-section-html footer))))

(define (check-for-poem-title doc-txpr)
  (match (car (get-elements doc-txpr))
    [(txexpr 'div
             (list (list 'class "poem"))
             (list* (txexpr 'p
                            (list (list 'class "verse-heading"))