(ns frontend.extensions.zotero
  (:require [cljs.core.async :refer [<! >! chan go go-loop] :as a]
            [clojure.edn :refer [read-string]]
            [clojure.string :as str]
            [frontend.components.svg :as svg]
            [frontend.extensions.pdf.assets :as pdf-assets]
            [frontend.extensions.zotero.api :as api]
            [frontend.extensions.zotero.handler :as zotero-handler]
            [frontend.extensions.zotero.setting :as setting]
            [frontend.handler.notification :as notification]
            [frontend.handler.route :as route-handler]
            [frontend.state :as state]
            [frontend.ui :as ui]
            [frontend.util :as util]
            [goog.dom :as gdom]
            [promesa.core :as p]
            [rum.core :as rum]))

(def term-chan (chan))
(def debounce-chan-mult (a/mult (api/debounce term-chan 500)))

(rum/defc zotero-search-item [{:keys [data] :as item} id]
  (let [[is-creating-page set-is-creating-page!] (rum/use-state false)
        title (:title data)
        type (:item-type data)
        abstract (str (subs (:abstract-note data) 0 200) "...")]
    [:div.zotero-search-item.px-2.py-4.border-b.cursor-pointer.border-solid.last:border-none.relative
     {:on-click (fn [] (go
                        (set-is-creating-page! true)
                        (<!
                         (zotero-handler/create-zotero-page item {:block-dom-id id}))
                        (set-is-creating-page! false)))}
     [[:div [[:span.font-bold.mb-1.mr-1 title]
             [:span.zotero-search-item-type.text-xs.p-1.rounded type]]]
      [:div.text-sm abstract]]

     (when is-creating-page [:div.zotero-search-item-loading-indicator [:span.animate-spin-reverse  svg/refresh]])]))

(rum/defc zotero-search
  [id]

  (let [[term set-term!]                         (rum/use-state "")
        [search-result set-search-result!]       (rum/use-state [])
        [prev-page set-prev-page!]               (rum/use-state "")
        [next-page set-next-page!]               (rum/use-state "")
        [prev-search-term set-prev-search-term!] (rum/use-state "")
        [search-error set-search-error!]         (rum/use-state nil)
        [is-searching set-is-searching!]         (rum/use-state false)

        search-fn (fn [s-term start]
                    (go
                      (when-not (str/blank? s-term)
                        (set-is-searching! true)

                        (let [{:keys [success next prev result] :as response}
                              (<! (api/query-top-items s-term start))]
                          (if (false? success)
                            (set-search-error! (:body response))

                            (do
                              (set-prev-search-term! s-term)
                              (set-next-page! next)
                              (set-prev-page! prev)
                              (set-search-result! result))))

                        (set-is-searching! false))))]

    (rum/use-effect!
     (fn []
       (let [d-chan (chan)]
         (a/tap debounce-chan-mult d-chan)
         (go-loop []
           (let [d-term (<! d-chan)]
             (<! (search-fn d-term "0")))
           (recur))

         (fn [] (a/untap debounce-chan-mult d-chan))))
     [])

    (when-not (setting/valid?)
      (route-handler/redirect! {:to :zotero-setting})
      (notification/show! "Please setup Zotero API key and user/group id first!" :warn false))

    [:div#zotero-search.zotero-search.p-4
     {:style {:width 720}}

     [:div.flex.items-center.mb-2
      [[:input.p-2.border.mr-2.flex-1.focus:outline-none
        {:autoFocus   true
         :placeholder "Search for your Zotero journal article (title, author, text, anything)"
         :value       term :on-change (fn [e]
                                        (go
                                          (>! term-chan (util/evalue e)))
                                        (set-term! (util/evalue e)))}]

       [:span.animate-spin-reverse {:style {:visibility (if is-searching "visible"  "hidden")}}  svg/refresh]]]

     [:div.h-2.text-sm.text-red-400.mb-2 (if search-error (str "Search error: " search-error) "")]

     [:div
      (map
       (fn [item] (rum/with-key (zotero-search-item item id) (:key item)))
       search-result)
      (when-not (str/blank? prev-page)
        (ui/button
         "prev"
         :on-click
         (fn []
           (set! (.-scrollTop (.-parentNode (gdom/getElement "zotero-search"))) 0)
           (search-fn prev-search-term prev-page))))
      (when-not (str/blank? next-page)
        (ui/button
         "next"
         :on-click
         (fn []
           (set! (.-scrollTop (.-parentNode (gdom/getElement "zotero-search"))) 0)
           (search-fn prev-search-term next-page))))]]))

(rum/defcs user-or-group-setting <
  (rum/local (setting/setting :type-id) ::type-id)
  rum/reactive
  [state]
  [:div
   [:div.row
    [:label.title.w-72
     {:for "zotero_type"}
     "Zotero user or group?"]
    [:div.mt-1.sm:mt-0.sm:col-span-2
     [:div.max-w-lg.rounded-md
      [:select.form-select
       {:value     (-> (setting/setting :type) name)
        :on-change (fn [e]
                     (let [type (-> (util/evalue e)
                                    (str/lower-case)
                                    keyword)]
                       (setting/set-setting! :type type)))}
       (for [type (map name [:user :group])]
         [:option {:key type :value type} (str/capitalize type)])]]]]

   [:div.row
    [:label.title.w-72
     {:for "zotero_type_id"}
     "User or Group ID"]
    [:div.mt-1.sm:mt-0.sm:col-span-2
     [:div.max-w-lg.rounded-md
      [:input.form-input.block
       {:default-value (setting/setting :type-id)
        :placeholder   "User/Group id"
        :on-blur       (fn [e] (setting/set-setting! :type-id (util/evalue e)))
        :on-change     (fn [e] (reset! (::type-id state) (util/evalue e)))}]]]]

   (when
    (and (not (str/blank? (str @(::type-id state))))
         (not (re-matches #"^\d+$" (str @(::type-id state)))))
     (ui/admonition
      :warning
      [:p.text-red-500
       "User ID is different from username and can be found on the "
       [:a {:href "https://www.zotero.org/settings/keys" :target "_blank"}
        "https://www.zotero.org/settings/keys"]
       " page, it's a number of digits"]))])

(rum/defc overwrite-mode-setting <
  rum/reactive
  []
  [:div
   [:div.row
    [:label.title.w-72
     {:for "zotero_overwrite_mode"}
     "Overwrite existing item page?"]
    [:div
     [:div.rounded-md.sm:max-w-xs
      (ui/toggle (setting/setting :overwrite-mode?)
                 (fn [] (setting/set-setting! :overwrite-mode? (not (setting/setting :overwrite-mode?))))
                 true)]]]
   (when (setting/setting :overwrite-mode?)
     (ui/admonition
      :warning
      [:p.text-red-500
       "Dangerous! This will delete and recreate Zotero existing page! Make sure to backup your notes first in case something goes wrong. Make sure you don't put any personal item in previous Zotero page and it's OK to overwrite the page!"]))])

(rum/defc attachment-setting <
  rum/reactive
  []
  [:div
   [:div.row
    [:label.title.w-72
     {:for "zotero_include_attachment_links"}
     "Include attachment links?"]
    [:div
     [:div.rounded-md.sm:max-w-xs
      (ui/toggle (setting/setting :include-attachments?)
                 (fn [] (setting/set-setting! :include-attachments? (not (setting/setting :include-attachments?))))
                 true)]]]
   (when (setting/setting :include-attachments?)
     [:div.row
      [:label.title.w-72
       {:for "zotero_attachments_block_text"}
       "Attachment under block of:"]
      [:div.mt-1.sm:mt-0.sm:col-span-2
       [:div.max-w-lg.rounded-md
        [:input.form-input.block
         {:default-value (setting/setting :attachments-block-text)
          :on-blur       (fn [e] (setting/set-setting! :attachments-block-text (util/evalue e)))}]]]])
   (when (setting/setting :include-attachments?)
     [:div.row
      [:label.title.w-72
       {:for "zotero_linked_attachment_base_directory"}
       "Zotero linked attachment base directory"
       [:a.ml-2
        {:title  "If you store attached files in Zotero — the default — this setting does not affect you. It only applies to linked files. If you're using the ZotFile plugin to help with a linked-file workflow, you should configure it to store linked files within the base directory you've configured. Click to learn more."
         :href   "https://www.zotero.org/support/preferences/advanced#linked_attachment_base_directory"
         :target "_blank"}
        (svg/info)]]
      [:div.mt-1.sm:mt-0.sm:col-span-2
       [:div.max-w-lg.rounded-md
        [:input.form-input.block
         {:default-value (setting/setting :zotero-linked-attachment-base-directory)
          :placeholder   "/Users/Sarah/Dropbox"
          :on-blur       (fn [e] (setting/set-setting! :zotero-linked-attachment-base-directory (util/evalue e)))}]]]])])

(rum/defc prefer-citekey-setting <
  rum/reactive
  []
  [:div.row
   [:label.title.w-72
    {:for   "zotero_prefer_citekey"
     :title "Make sure to install Better BibTeX and pin your item first"}
    "Use citekey as your page title?"]
   [:div
    [:div.rounded-md.sm:max-w-xs
     (ui/toggle (setting/setting :prefer-citekey?)
                (fn [] (setting/set-setting! :prefer-citekey? (not (setting/setting :prefer-citekey?))))
                true)]]])

(rum/defc api-key-setting []
  [:div.row
   [:label.title.w-72
    {:for "zotero_api_key"}
    "Zotero API key"]
   [:div.mt-1.sm:mt-0.sm:col-span-2
    [:div.max-w-lg.rounded-md
     [:input.form-input.block
      {:default-value (setting/api-key)
       :placeholder   "Please enter your Zotero API key"
       :on-blur       (fn [e] (setting/set-api-key (util/evalue e)))}]]]])

(rum/defc notes-setting <
  rum/reactive
  []
  [:div
   [:div.row
    [:label.title.w-72
     {:for "zotero_include_notes"}
     "Include notes?"]
    [:div
     [:div.rounded-md.sm:max-w-xs
      (ui/toggle (setting/setting :include-notes?)
                 (fn [] (setting/set-setting! :include-notes?
                                              (not (setting/setting :include-notes?))))
                 true)]]]
   (when (setting/setting :include-notes?)
     [:div.row
      [:label.title
       {:for "zotero_notes_block_text"}
       "Notes under block of:"]
      [:div.mt-1.sm:mt-0.sm:col-span-2
       [:div.max-w-lg.rounded-md
        [:input.form-input.block
         {:default-value (setting/setting :notes-block-text)
          :on-blur       (fn [e] (setting/set-setting! :notes-block-text (util/evalue e)))}]]]])])

(rum/defc page-prefix-setting []
  [:div.row
   [:label.title
    {:for "zotero_page_prefix"}
    "Insert page name with prefix:"]
   [:div.mt-1.sm:mt-0.sm:col-span-2
    [:div.max-w-lg.rounded-md
     [:input.form-input.block
      {:default-value (setting/setting :page-insert-prefix)
       :on-blur       (fn [e] (setting/set-setting! :page-insert-prefix (util/evalue e)))}]]]])

(rum/defc extra-tags-setting []
  [:div.row
   [:label.title
    {:for "zotero_extra_tags"
     :title "Extra tags to add for every imported page. Separate by comma, or leave it empty."}
    "Extra tags to add:"]
   [:div.mt-1.sm:mt-0.sm:col-span-2
    [:div.max-w-lg.rounded-md
     [:input.form-input.block
      {:default-value (setting/setting :extra-tags)
       :placeholder   "tag1,tag2,tag3"
       :on-blur       (fn [e] (setting/set-setting! :extra-tags (util/evalue e)))}]]]])

(rum/defc data-directory-setting []
  [:div.row
   [:label.title
    {:for "zotero_data_directory"}
    "Zotero data directory"
    [:a.ml-2
     {:title "Set Zotero data directory to open pdf attachment in Logseq. Click to learn more."
      :href "https://www.zotero.org/support/zotero_data"
      :target "_blank"}
     (svg/info)]]
   [:div.mt-1.sm:mt-0.sm:col-span-2
    [:div.max-w-lg.rounded-md
     [:input.form-input.block
      {:default-value (setting/setting :zotero-data-directory)
       :placeholder   "/Users/<username>/Zotero"
       :on-blur       (fn [e] (setting/set-setting! :zotero-data-directory (util/evalue e)))}]]]])

(rum/defcs profile-name-dialog-inner <
  (rum/local "" ::input)
  [state profile* close-fn]
  (let [input (get state ::input)]
    [:div
     [:div.sm:flex.sm:items-start
      [:div.mt-3.text-center.sm:mt-0.sm:text-left
       [:h3#modal-headline.text-lg.leading-6.font-medium
        "Please enter your profile name"]]]

     [:input.form-input.block.w-full.sm:text-sm.sm:leading-5.my-2
      {:auto-focus true
       :default-value ""
       :on-change (fn [e] (reset! input (util/evalue e)))}]

     [:div.mt-5.sm:mt-4.sm:flex.sm:flex-row-reverse
      [:span.flex.w-full.rounded-md.shadow-sm.sm:ml-3.sm:w-auto
       [:button.inline-flex.justify-center.w-full.rounded-md.border.border-transparent.px-4.py-2.bg-indigo-720.text-base.leading-6.font-medium.text-white.shadow-sm.hover:bg-indigo-500.focus:outline-none.focus:border-indigo-700.focus:shadow-outline-indigo.transition.ease-in-out.duration-150.sm:text-sm.sm:leading-5
        {:type "button"
         :class "ui__modal-enter"
         :on-click (fn []
                     (let [profile-name (str/trim @input)]
                       (when-not (str/blank? profile-name)
                         (p/let [_ (setting/add-profile profile-name)
                                 _ (setting/set-profile profile-name)]
                           (reset! profile* profile-name)))
                       (state/close-modal!)))}
        "Submit"]]
      [:span.mt-3.flex.w-full.rounded-md.shadow-sm.sm:mt-0.sm:w-auto
       [:button.inline-flex.justify-center.w-full.rounded-md.border.border-gray-300.px-4.py-2.bg-white.text-base.leading-6.font-medium.text-gray-700.shadow-sm.hover:text-gray-500.focus:outline-none.focus:border-blue-300.focus:shadow-outline-blue.transition.ease-in-out.duration-150.sm:text-sm.sm:leading-5
        {:type "button"
         :on-click close-fn}
        "Cancel"]]]]))

(rum/defc zotero-profile-selector <
  rum/reactive
  [profile*]
  [:div.row
   [:label.mr-32 {:for "profile-select"} "Choose a profile:"]
   [:span.justify-evenly
    [:select
     {:value @profile*
      :on-change
      (fn [e]
        (when-let [profile (util/evalue e)]
          (p/let [_ (setting/set-profile profile)]
            (reset! profile* profile))))}
     (map-indexed (fn [i x] [:option
                             {:key      i
                              :value    x}
                             x]) (setting/all-profiles))]
    (ui/button
     "New profile"
     :small? true
     :class "ml-4"
     :on-click
     (fn []
       (state/set-modal!
        (fn [close-fn]
          (profile-name-dialog-inner profile* close-fn)))))
    (ui/button
     "Delete profile!"
     :small? true
     :background "red"
     :class "ml-4"
     :on-click
     (fn []
       (p/let [_ (setting/remove-profile @profile*)]
         (reset! profile* (setting/profile)))))]])

(rum/defcs add-all-items <
  (rum/local nil ::progress)
  (rum/local false ::total)
  (rum/local "Add all" ::fetching-button)
  rum/reactive
  [state]
  [:div
   [:div.row
    [:label.title.w-72
     {:for "zotero_import_all"}
     "Add all zotero items"]
    [:div.mt-1.sm:mt-0.sm:col-span-2
     (ui/button
      @(::fetching-button state)
      :on-click
      (fn []
        (go
          (let [_     (reset! (::fetching-button state) "Fetching..")
                total (<! (api/all-top-items-count))
                _     (reset! (::fetching-button state) "Add all")]
            (when (.confirm
                   js/window
                   (str "This will import all your zotero items and add total number of " total " pages. Do you wish to continue?"))

              (reset! (::total state) total)
              (<! (zotero-handler/add-all (::progress state)))
              (reset! (::total state) false)
              (notification/show! "Successfully added all items!" :success))))))]]
   (ui/admonition
    :warning
    "If you have a lot of items in Zotero, adding them all can slow down Logseq. You can type /zotero to import specific item on demand instead.")

   (when @(::total state)
     [:div.row
      [:div.bg-greenred-200.py-3.rounded-lg.col-span-full
       [:progress.w-full {:max (+ @(::total state) 30) :value @(::progress state)}] "Importing items from Zotero....Please wait..."]])])

(rum/defc setting-rows
  []
  [:div
   (api-key-setting)

   (user-or-group-setting)

   (prefer-citekey-setting)

   (attachment-setting)

   (notes-setting)

   (page-prefix-setting)

   (extra-tags-setting)

   (data-directory-setting)

   (overwrite-mode-setting)])

(rum/defcs settings
  <
  (rum/local (setting/all-profiles) ::all-profiles)
  (rum/local (setting/profile) ::profile)
  rum/reactive
  {:should-update
   (fn [old-state _new-state]
     (let [all-profiles (setting/all-profiles)]
       (not= all-profiles @(::all-profiles old-state))))}
  [state]
  [:div.zotero-settings
   [:h1.mb-4.text-4xl.font-bold.mb-8 "Zotero Settings"]

   (zotero-profile-selector (::profile state))

   (rum/with-key (setting-rows) @(::profile state))

   (add-all-items)])

(defn open-button [full-path]
  (if (str/ends-with? (str/lower-case full-path) "pdf")
    (ui/button
     "open"
     :small? true
     :on-click
     (fn [e]
       (when-let [current (pdf-assets/inflate-asset full-path)]
         (util/stop e)
         (state/set-state! :pdf/current current))))
    (ui/button
     "open"
     :small? true
     :target "_blank"
     :href full-path)))

(rum/defc zotero-imported-file
  [item-key filename]
  (if (str/blank? (setting/setting :zotero-data-directory))
    [:p.warning "This is a zotero imported file, setting Zotero data directory would allow you to open the file in Logseq"]
    (let [filename (read-string filename)
          full-path
          (str "file://"
               (util/node-path.join
                (setting/setting :zotero-data-directory)
                "storage"
                item-key
                filename))]
      (open-button full-path))))

(rum/defc zotero-linked-file
  [path]
  (if (str/blank? (setting/setting :zotero-linked-attachment-base-directory))
    [:p.warning "This is a zotero linked file, setting Zotero linked attachment base directory would allow you to open the file in Logseq"]
    (let [path (read-string path)
          full-path
          (str "file://"
               (util/node-path.join
                (setting/setting :zotero-linked-attachment-base-directory)
                (str/replace-first path "attachments:" "")))]
      (open-button full-path))))
