form.cljs.hl

(ns ui.form
  (:refer-hoplon :exclude [select input textarea label form])
  (:require [ui.form.input :as input]
            [ui.button     :as button]
            [ui.modal      :as modal]
            [ui.grid       :as grid]
            [ui.filters    :as filters]
            [ui.link       :as link]
            [ui.util       :as util]
            [ui.icon       :as icon]
            [ui.typeahead  :as typeahead]
            [ui.drilldown  :as drilldown]
            [workflow.form :as workflow]
            [ui.paging     :as p]
            [ui.form.tokenfield-impl :as tokenfield]
            [ui.form.datepicker-impl :as datepicker]
            [ui.screen     :as screen :include-macros true])
  (:require-macros [ui.form :refer [definput with-form]]))

(def ^:dynamic *form-machine*   nil)
(def ^:dynamic *form-state*     nil)
(def ^:dynamic *form-loading*   nil)
(def ^:dynamic *form-errors*    nil)
(def ^:dynamic *form-inputs*    nil)
(def ^:dynamic *form-exception* nil)
(def ^:dynamic *input-error*    nil)
(def ^:dynamic *input-data*     nil)
(def ^:dynamic *input-name*     nil)

(defn upsert-machine
  [& {:keys [action schema current success page callback]}]
  (let [page    (or page screen/*page*)
        upsert  screen/*upsert*
        action  (or action #(upsert % (p/page-opts page)))
        schema  (or schema screen/*schema*)
        current (or current screen/*current*)
        success (or success #(reset! current nil))]
    (workflow/form-machine
      :action   action
      :schema   schema
      :current  current
      :success  success
      :callback callback)))

(defelem label
  [{:keys [for] :as attr} kids]
  (let [for (or for *input-name*)
        attr (assoc attr :for for)]
    (hoplon.core/label attr kids)))

(definput select
  [attr kids]
  (div :class "select"
    (input/select :class "form-control" attr kids)))

(definput text-input
  [attr _]
  (input/input :type "text" :class "form-control" attr))

(definput number-input
  [attr _]
  (input/input :type "number" :class "form-control" attr))

(definput textarea
  [attr _]
  (input/textarea :class "form-control" attr))

(definput password-input
  [attr _]
  (input/input :type "password" :class "form-control" attr))

(definput date-input
  [attr _]
  ((datepicker/datepicker attr) :class "form-control"))

(definput datetime-input
  [attr _]
  ((datepicker/datetimepicker attr) :class "form-control"))

(definput hidden-input
  [attr _]
  (input/input :type "hidden" attr))

(definput file-input
  [{:keys [state] :as attr} _]
  (hoplon.core/input :type "file"
                     :autocomplete false
                     :change #(try (reset! state (aget % "target" "files" 0))
                                   (catch js/Error _))
                     attr))

(definput typeahead-and-manager
  [{:keys [state] :as attr} _]
  (let [opts (merge {:display-fn :__title__ :value-key :id} attr)
        manager (typeahead/typeahead-manager opts)]
    [(typeahead/input* opts manager) manager]))

(definput typeahead
  [{:keys [state] :as attr} _]
  (first (typeahead-and-manager attr)))

(definput drilldown
  [attr _]
  (drilldown/input attr))

(definput tokenfield
  [attr _]
  (tokenfield/tokenfield attr))

(definput binary-checkbox
  [{:keys [pos state] :as attr} kids]
  (div :class "checkbox"
       :style "vertical-align: bottom;"
    (hoplon.core/label (dissoc attr :state)
      :style "margin-left: .2em; padding: 0 .3em; background: #f6f6f6"
      (span :class "switch"
        (hoplon.core/input
         :type    "checkbox"
         :prop    (cell= {:checked (not= 0 (bit-and state (.pow js/Math 2 pos)))})
         :click   (fn [_] (swap! state #(bit-flip % pos))))
        (i))
      kids)))

(definput inline-checkbox
  [{:keys [label] :as attr} _]
  (hoplon.core/label
    (span :class "switch"
      (input/checkbox attr)
      (i))
    label))

(definput checkbox
  [attr _]
  (div :class "checkbox"
    (inline-checkbox attr)))

(defelem checkbox-block
  [{:keys [state disabled] :as attr} kids]
  (let [state (or state  *input-data*)]
    (div :class "checkbox"
      (hoplon.core/label (dissoc attr :state)
        (span :class "switch"
          (input/checkbox :state state :disabled disabled)
          (i))
        kids))))

(defelem radio-block
  [{:keys [state value disabled] :as attr} kids]
  (let [state (or state  *input-data*)]
    (div :class "checkbox"
      (hoplon.core/label (dissoc attr :state :value)
        (span :class "switch"
          (input/radio :state state :value value :disabled disabled)
          (i))
        kids))))

(defelem options
  [attr kids]
  ((div :class "options options-large") attr kids))

(defelem checkset-block
  [{:keys [state value] :as attr} kids]
  (let [state (or state *input-data*)]
    (div :class "checkbox"
      (hoplon.core/label (dissoc attr :state :value)
        (span :class "switch"
          (input/checkset :state state :value value)
          (i))
        kids))))

(defelem panel
  [{:keys [heading] :as attr} kids]
  ((div :class "panel panel-default") (dissoc attr :heading)
     (div :class "panel-heading"
       (h5 heading))
     (div :class "panel-body" kids)))

(defelem form-table-panel
  [{:keys [heading] :as attr} & [kids]]
  (let [body  [(butlast kids)]
        table [(last kids)]]
    ((div :class "panel panel-default") (dissoc attr :heading)
     (div :class "panel-heading"
       (h5 heading))
     (div :class "collapse-in"
       (div :class "panel-body" body)
       table))))

(defelem validation-item
  [{:keys [error state] :as attr} kids]
  (let [attr (dissoc attr :error :state)
        state (or state *form-state*)
        error (or error *input-error*)]
    ((grid/item :class (cell= {:has-error   (and error (not= "" error))
                               :has-success (or (= "" error) (= :no-error state))}))
     attr kids)))

(defelem validation-field
  [{:keys [error state] :as attr} kids]
  (let [attr (dissoc attr :error :state)
        state (or state *form-state*)
        error (or error *input-error*)]
    (grid/grid
      attr
      (grid/row
        (grid/item
          :class (cell= {:has-error   (and error (not= "" error))
                         :has-success (or (= "" error) (= :no-error state))})
          kids)))))

(defelem validation-message
  [{:keys [state] :as attr} _]
  (let [state (or state *input-error*)]
    ((p :class  "text-danger"
        :toggle state
        :text   state)
     (dissoc attr :state))))

(defelem validation-alert
  [{:keys [state] :as attr} _]
  (let [state (or state *form-exception*)]
    ((div :class "alert alert-danger" :toggle state)
     (dissoc attr :state) (span :text state))))

(defelem submit-primary
  [{:keys [state text active-text] :or {text "Save" active-text "Working..."} :as attr} kids]
  (let [state (or state *form-loading*)
        attr  (dissoc attr :state :text :active-text)]
    [(button/primary
       (merge {:type "submit" :toggle (cell= (= 0 state))} attr)
       (or (seq kids) text))
     (button/primary
       attr
       (merge {:disabled true :toggle (cell= (not= 0 state))} attr)
       (or (seq kids) active-text))]))

(defelem cancel-link
  [{:keys [click] :as attr} kids]
  (let [current screen/*current*
        click (or click #(reset! current nil))]
    ((button/link :click click (or (seq kids) "Cancel")) (dissoc attr :click))))

(defelem edit-icon
  [{:keys [click item current] :as attr} _]
  (let [current (or current screen/*current*)
        click (or click #(reset! current @item))]
    ((link/button-link :click click (icon/edit))
     (dissoc attr :click :item :current))))

(defelem delete-icon
  [{:keys [click item deleting] :as attr} _]
  (let [deleting (or deleting screen/*deleting*)
        click (or click #(reset! deleting @item))]
    ((link/button-link :click click (icon/remove))
     (dissoc attr :click :item :deleting))))

(defelem alert
  [attr kids]
  ((div :class "alert") attr kids))

(defelem alert-warning
  [attr kids]
  ((alert :class "alert-warning") attr kids))

(defelem help-block
  [attr kids]
  ((p :class "help-block") attr kids))

(defn close-when-unchanged
  [form-machine current-item]
  #(if-not @(:dirty? form-machine)
     (reset! current-item nil)))

(defn computed-title
  [& {:keys [zone entity-type current-entity current deleting type]}]
  (let [form-machine   *form-machine*
        zone           (or zone screen/*zone*)
        current        (or current screen/*current*)
        deleting       (or deleting screen/*deleting*)
        current-title  (cell= (:__title__ current))
        deleting-title (cell= (:__title__ deleting))
        entity-type    (or entity-type screen/*entity-type*)
        current-entity (or current-entity screen/*current-entity*)
        entity-title   (cell= (or (:__title__ current-entity) "..."))
        zone-name      (cell= (util/singularize zone))
        new?           (cell= (zero? ~(:__row__ (:data form-machine))))
        type           (or type (cell= (if new? :insert :update)))]
    (cell= (util/title-case
             (case type
               :insert (if-not entity-type
                         (str "new " zone-name)
                         (str "add a " zone-name " to " entity-type " " entity-title))
               :update (str "edit " zone-name " " current-title)
               :delete (if-not entity-type
                         (str zone-name " " deleting-title)
                         (str zone-name " " deleting-title " from " entity-type " " entity-title))
               :zone-title (if-not entity-type
                             (str "all " zone)
                             (str zone " for " entity-type " " entity-title))
               :edit-region (str zone " " entity-type)
               :edit-title entity-title
               :new-button (if-not entity-type
                             (str "new " zone-name)
                             (str "add a " zone-name " to this " entity-type))
               :delete-button (if-not entity-type "Delete" "Remove"))))))

(defelem modal-form
  [{:keys [current-item
           form-machine
           open
           overlay-click
           title
           name
           insert-title
           update-title
           pages] :as attr}
   kids]
  (let [form-machine   *form-machine*
        current-item   (or current-item screen/*current*)
        open           (or open current-item (cell nil))
        form-machine   (or form-machine *form-machine*)
        id             (get-in form-machine [:data :id])
        overlay-click  (or overlay-click (close-when-unchanged form-machine current-item))
        title          (or title (computed-title))
        pages          (or pages [])
        attr           (dissoc attr :current-item :form-machine :open :overlay-click :title :name)]
    ;; TODO check this still works
    (util/on-change open (fn [x] (if x (doseq [page pages]
                                        (when (not (:active @(:params page)))
                                          (p/activate! page))))))
    (modal/modal-form
      (merge {:open open :title title :overlay-click overlay-click} attr) kids)))

(defelem form
  [{:keys [submit] :as attr} kids]
  (let [form-machine *form-machine*
        submit (or submit #(do (.preventDefault %)
                               (workflow/submit form-machine)))]
    ((hoplon.core/form
       :novalidate true
       :submit submit)
     (dissoc attr :submit) kids)))

(defelem upsert-form
  [attr kids]
  (form attr
        kids
        (validation-alert)
        (submit-primary)
        (cancel-link)))

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