94 lines
3.9 KiB
Clojure
94 lines
3.9 KiB
Clojure
;;; Copyright (C) 2014-2021 Aaron Fischer <mail@aaron-fischer.net> Permission
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;;; is hereby granted, free of charge, to any person obtaining a copy of this
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;;; software and associated documentation files (the "Software"), to deal in the
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;;; Software without restriction, including without limitation the rights to
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;;; use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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;;; copies of the Software, and to permit persons to whom the Software is
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;;; furnished to do so, subject to the following conditions: The above
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;;; copyright notice and this permission notice shall be included in all copies
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;;; or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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;;; IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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;;; FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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;;; COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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;;; IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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;;; CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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(ns buchdesmonats.core
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(:gen-class)
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(:require [net.cgrand.enlive-html :as html]
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[clj-http.client :as http-client]
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[clojure.string :as str]
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[clojure.java.io :as io]
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[clojure.tools.logging :as log]
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[me.raynes.fs :as fs]))
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(defn bookurl->isbn [url]
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(re-find #"[0-9]+" url))
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(defn isbn->imageurl [isbn]
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(str "https://medien.ubitweb.de/bildzentrale_original/"
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(subs isbn 0 3) "/"
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(subs isbn 3 6) "/"
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(subs isbn 6 9) "/"
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(subs isbn 9) ".jpg"))
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(defn imgurl->bytes [url]
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(let [isbn (bookurl->isbn url)
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url-to-fetch (isbn->imageurl isbn)
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stream (http-client/get url-to-fetch {:as :byte-array})]
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(:body stream)))
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(defn url->file [url target-dir]
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(io/file target-dir (str (bookurl->isbn url) ".jpg")))
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(defn scrape-book-urls [datasource-url]
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(->> (http-client/get datasource-url {:insecure? true})
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:body
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str/split-lines
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(map #(second (re-find #"^\* .*\[.+\]\((.+)\)" %)))
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(remove nil?)))
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(defn scrape-book-cover [url target-dir]
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(try
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(let [target-file (url->file url target-dir)
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bytes (imgurl->bytes url)]
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(with-open [out (io/output-stream target-file)]
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(.write out bytes)))
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(catch Exception e
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(log/info "Problem with " url ":" e ". Skip it."))))
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(defn find-missing-covers [books-url target-dir]
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(remove #(fs/exists? (url->file % target-dir))
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(scrape-book-urls books-url)))
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(defn cover-item-model-for-type [public-dir type]
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(html/defsnippet cover-item-model (io/file public-dir (str type ".html")) [:div#covers :> :div]
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[link title]
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[:a] (html/set-attr :href link)
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[:img] (html/set-attr :src (url->file link (str type "-covers")) :title title)))
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(defn template-for-type [public-dir type]
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(html/deftemplate book-template (io/reader (io/file public-dir (str type ".html")))
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[cover-urls]
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[:#covers] (html/content
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(map #((cover-item-model-for-type public-dir type) % "zu Lovely Books")
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cover-urls))))
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(defn generate-html [type book-urls public-dir]
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(let [content (apply str ((template-for-type public-dir type) book-urls))]
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(with-open [out (io/writer (io/file public-dir (str type ".html")))]
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(.write out content))))
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(defn -main [& args]
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(if (empty? args)
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(do (log/fatal "Please give a cover type (comic/book)")
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(System/exit 1)))
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(let [type (first args)
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datasource-url (str "https://git.okoyono.de/mezzo/buch_des_monats/raw/master/" (clojure.string/upper-case type) ".mkd")
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target-dir (io/file "public" (str type "-covers/"))]
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(fs/mkdirs target-dir)
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(generate-html type (scrape-book-urls datasource-url) "public")
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(doall (pmap #(scrape-book-cover % target-dir)
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(find-missing-covers datasource-url target-dir)))
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(System/exit 0)))
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