106 lines
4.4 KiB
Clojure
106 lines
4.4 KiB
Clojure
;;; Copyright (C) 2014-2019 Aaron Fischer <mail@aaron-fischer.net>
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;;;
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;;; Permission is hereby granted, free of charge, to any person obtaining a copy of
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;;; this software and associated documentation files (the "Software"), to deal in
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;;; the Software without restriction, including without limitation the rights to
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;;; use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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;;; the Software, and to permit persons to whom the Software is furnished to do so,
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;;; subject to the following conditions:
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;;;
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;;; The above copyright notice and this permission notice shall be included in all
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;;; copies or substantial portions of the Software.
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;;;
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;;; 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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;; TODO: Make it compatible to other book cover sites
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(defn imgurl->bytes [lovelybooks-url]
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(let [urls (-> (java.net.URL. lovelybooks-url)
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html/html-resource
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(html/select [:img.ResponsiveImage.BookCover])
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first
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(get-in [:attrs :srcset])
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(str/split #" "))
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url-to-fetch (last (filter #(re-matches #"http.+\.jpg" %) urls))
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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 encode-url-part [part]
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(java.net.URLEncoder/encode part "UTF-8"))
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(defn encode-url [url]
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(let [parts (map encode-url-part (re-find #"\/autor\/([^/]+)\/([^/]+)\/?" url))
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author (nth parts 1)
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book-title (nth parts 2)]
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(str "https://lovelybooks.de/autor/" author "/" book-title)))
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(defn url->file [lovelybooks-url target-dir]
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(let [[_ author title] (re-find #".\/autor\/([^\/]+)\/(.+)-([0-9]+)-.\/$" lovelybooks-url)]
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(-> (str author "_" title ".jpg")
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str/lower-case
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(str/replace #"[^a-z0-9-_.]" "")
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(#(io/file target-dir %)))))
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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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encoded-url (encode-url url)
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bytes (imgurl->bytes encoded-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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;; TODO: Better exception (examine e?)
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(log/info "Problems with " url ", 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 [type]
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(html/defsnippet cover-item-model (str "buchdesmonats/" 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 [type]
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(html/deftemplate book-template (str "buchdesmonats/" 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 type) % "zu Lovely Books")
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cover-urls))))
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(defn generate-html [type book-urls target-dir]
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(let [content (apply str ((template-for-type type) book-urls))]
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(with-open [out (io/writer (io/file target-dir (str type ".html")))]
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(.write out content))))
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(defn -main [& args]
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(let [type (first args)
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datasource-url (str "https://git.okoyono.de/mezzomix/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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