(ns auto-ap.views.components.invoice-table
  (:require [auto-ap.events :as events]
            [auto-ap.routes :as routes]
            [auto-ap.subs :as subs]
            [auto-ap.views.components.buttons :as buttons]
            [auto-ap.views.components.dropdown
             :refer
             [drop-down drop-down-contents]]
            [auto-ap.views.components.grid :as grid]
            [auto-ap.views.pages.invoices.form :as form]
            [auto-ap.views.pages.invoices.common :refer [invoice-read]]
            [auto-ap.views.utils :refer [date->str dispatch-event nf]]
            [bidi.bidi :as bidi]
            [cemerick.url :as url]
            [cljs-time.core :as t]
            [clojure.string :as str]
            [goog.string :as gstring]
            [re-frame.core :as re-frame]
            [auto-ap.views.components.expense-accounts-dialog :as expense-accounts-dialog]))

(defn query [params]
  {:venia/queries [[:invoice_page
                    (-> params
                        (assoc 
                               :client-id (:id @(re-frame/subscribe [::subs/client])))) 
                    [[:invoices [:id :total :outstanding-balance :invoice-number :date :due :status :client-identifier :automatically-paid-when-due
                                 [:vendor [:name :id]]
                                 [:expense_accounts [:amount :id :location
                                                     [:account [:id ]]]]
                                 [:client [:name :id :locations]]
                                 [:payments [:amount :id [:payment [:id :status :amount :s3_url :check_number
                                                                    [:transaction [:post_date]]]]]]]]
                     :outstanding
                     :total
                     :start
                     :end]]]})

(re-frame/reg-sub
 ::specific-table-params
 (fn [db]
   (::table-params db)))

(re-frame/reg-sub
 ::table-params
 :<- [::specific-table-params]
 :<- [::subs/query-params]
 (fn [[specific-table-params query-params]]
   (update (merge (select-keys query-params #{:start :sort}) specific-table-params )
           :sort seq)))

(re-frame/reg-event-fx
 ::params-changed
 [(re-frame/path [::table-params])]
 (fn [{table-params :db} [_ params :as z]]
   {:db (merge table-params params)}))

(re-frame/reg-event-fx
 ::void-invoice
 (fn [{:keys [db]} [_ {id :id}]]
   {:graphql
    {:token (-> db :user)
     :owns-state {:multi ::void
                  :which id}
     :query-obj {:venia/operation {:operation/type :mutation
                                   :operation/name "VoidInvoice"}
                 
                 :venia/queries [{:query/data [:void-invoice
                                               {:invoice-id id}
                                               invoice-read]}]}  
     :on-success (fn [result]
                   [::invoice-updated (assoc (:void-invoice result)
                                             :class "live-removed")])}}))

(re-frame/reg-event-fx
 ::unvoid-invoice
 (fn [{:keys [db]} [_ {id :id}]]
   {:graphql
    {:token (-> db :user)
     :owns-state {:multi ::unvoid
                  :which id}
     :query-obj {:venia/operation {:operation/type :mutation
                                   :operation/name "UnvoidInvoice"}
                 
                 :venia/queries [{:query/data [:unvoid-invoice
                                               {:invoice-id id}
                                               invoice-read]}]}  
     :on-success (fn [result]
                   [::invoice-updated (:unvoid-invoice result)])}}))

(re-frame/reg-event-fx
 ::invoice-updated
 (fn [{:keys [db]} [_ invoice]]
   {:db db}))

(defn row [{:keys [invoice check-boxes checked selected-client overrides expense-event actions]}]
  (let [{:keys [client payments expense-accounts invoice-number date due total outstanding-balance id vendor checkable?] :as i} invoice
        accounts-by-id @(re-frame/subscribe [::subs/accounts-by-id client])
        account->name #(:name (accounts-by-id (:id %)))]
    [grid/row {:class (:class i) :id id :checkable? checkable?}
     (when-not selected-client
       [grid/cell {}
        (if-let  [client-override (:client overrides)]
          (client-override i)
          (:name client))])
     [grid/cell {} (:name vendor)]
     [grid/cell {} invoice-number]
     [grid/cell {}  (date->str date) ]
     [grid/cell {}
      (when due 
        (let [today (t/at-midnight (t/now))
              due (t/at-midnight due)
              due-in (if (t/after? today due)
                       (- (t/in-days (t/interval (t/minus due (t/days 1)) today)))
                       (t/in-days (t/interval today due )))]
          (if (> due-in 0)
            [:span.has-text-success due-in " days"]
            [:span.has-text-danger due-in " days"])
          ))]
     [grid/cell {} (str/join ", " (set (map :location expense-accounts)))]
     
     [grid/cell {:class "has-text-right"} (nf total )]
     [grid/cell {:class "has-text-right"} (nf outstanding-balance )]
     [grid/button-cell {} 
      [:div.buttons 
       (when (seq expense-accounts)
         [drop-down {:id [::expense-accounts id  ]
                     :header [buttons/sl-icon {:class "badge"
                                               :event [::events/toggle-menu [::expense-accounts id]]
                                               :data-badge (str (clojure.core/count expense-accounts))
                                               :icon "icon-navigation-menu"}]}
          [drop-down-contents
           [:div
            (for [e expense-accounts]
              ^{:key (:id e)}
              [:span.dropdown-item  (account->name (:account e)) " "  (gstring/format "$%.2f" (:amount e) ) ])

            (when (get actions :expense-accounts)
              [:<>

               [:hr.dropdown-divider]

               [:a.dropdown-item.is-primary {:on-click (dispatch-event [::expense-accounts-dialog/show i])} "Change"]])]]])
       [:span {:style {:margin-left "1em"}}]
       (when (seq payments)
         [:<>
          [drop-down {:id [::payments id]
                      :header [buttons/sl-icon {:class "badge"
                                                :event [::events/toggle-menu [::payments id]]
                                                :data-badge (str (clojure.core/count payments))
                                                :icon "icon-accounting-bill"}]}
           [:div 
            (for [payment payments]
              (if (:check-number (:payment payment))
                ^{:key (:id payment)}
                [:a.dropdown-item {:href (str (bidi/path-for routes/routes :payments )
                                              "?"
                                              (url/map->query {:check-number-like (:check-number (:payment payment))}))
                                   :target "_new"}
                 [:i.fa.fa-money-check]
                 [:span.icon [:i.fa.fa-money]]
                 (str  " " (:check-number (:payment payment)) " (" (gstring/format "$%.2f" (:amount payment) ) ")")]

                ^{:key (:id payment)}
                [:span.dropdown-item  [:span.icon {:class [(when (= :cleared (:status (:payment payment)))
                                                             "has-text-success")]}
                                       [:i.fa.fa-money]] (str  " " (:check-number (:payment payment)) " (" (gstring/format "$%.2f" (:amount payment) ) ") "
                                                               (when (= :cleared (:status (:payment payment)))
                                                                 (str " - " (:post-date (:transaction (:payment payment))))))]))]]
          [:span {:style {:margin-right "1em"}}]])
       (when (and (get actions :edit)
                  (not= ":voided" (:status i)))
         [buttons/fa-icon {:icon "fa-pencil"
                           :event [::form/editing i]}])
       (when (and (get actions :void)
              (= (:outstanding-balance i) (:total i)) (not= ":voided" (:status i)))
         [buttons/sl-icon {:icon "icon-bin-2"
                           :event [::void-invoice i]}])
       (when (and (get actions :void)
              (= ":voided" (:status i)))
         [buttons/fa-icon {:icon "fa-undo"
                           :event [::unvoid-invoice i]}])]]]))

(defn invoice-table [{:keys [id data checked status check-boxes on-check-changed overrides actions]}]
  (let [selected-client @(re-frame/subscribe [::subs/client])
        {:keys [sort]} @(re-frame/subscribe [::table-params])
        selected-client @(re-frame/subscribe [::subs/client])
        is-loading? (= :loading (:state status))
        is-sorted-by-vendor? (and (= "vendor" (:sort-key (first sort)))
                                  (not is-loading?)
                                  (or (apply <= (map (comp :name :vendor) (:data data)))
                                      (apply >= (map (comp :name :vendor) (:data data)))))
        
        [invoice-groups] (if is-sorted-by-vendor?
                           (reduce
                            (fn [[acc last-vendor] invoice]
                              (if (not= (:id (:vendor invoice))
                                        last-vendor)
                                [(update-in acc [(clojure.core/count acc)] #(conj (or % []) invoice))
                                 (:id (:vendor invoice))]
                                [(update-in acc [(dec (clojure.core/count acc))] #(conj (or % []) invoice))
                                 (:id (:vendor invoice))]))
                            [[] nil]
                            (:data data))
                           [[(:data data)]])]
    [grid/grid {:on-params-change (fn [p]
                                    (re-frame/dispatch [::params-changed p]))
                :on-check-changed on-check-changed
                :params @(re-frame/subscribe [::table-params])
                :checked checked
                :status status
                :check-boxes? check-boxes
                :column-count (if selected-client 8 9)}
     [grid/controls data
      [:div.level-item
       "Outstanding " (nf (:outstanding data))]]
     (for [invoices invoice-groups]
       ^{:key (or (:id (first invoices)) "init")}
       [grid/table {:fullwidth true}
        [grid/header {}
         [grid/row {}
          (when-not selected-client
            [grid/sortable-header-cell {:sort-key "client" :sort-name "Client"} "Client"])
          [grid/sortable-header-cell {:sort-key "vendor" :sort-name "Vendor"}
           (if is-sorted-by-vendor?
             (:name (:vendor (first invoices)))
             "Vendor")]

          [grid/sortable-header-cell {:sort-key "invoice-number" :sort-name "Invoice Number"} "Invoice #"]
          [grid/sortable-header-cell {:sort-key "date" :sort-name "Date" :style {:width "8em"}} "Date"]
          [grid/sortable-header-cell {:sort-key "due" :sort-name "Due" :style {:width "8em"}} "Due"]
          [grid/sortable-header-cell {:sort-key "location" :sort-name "Location" :style {:width "5em"}} "Loc"]
          [grid/sortable-header-cell {:sort-key "total" :sort-name "Total" :style {:width "8em"} :class "has-text-right"} "Total"]
          
          [grid/sortable-header-cell {:sort-key "outstanding-balance" :sort-name "Outstanding" :style {:width "10em"} :class "has-text-right"} "Outstanding"]
          [grid/header-cell {:style {:width "14rem" }}]
          ]]

        [grid/body
         (for [{:keys [client payments expense-accounts invoice-number date due total outstanding-balance id vendor] :as i} invoices]
           ^{:key id}
           [row {:invoice i
                 :selected-client selected-client
                 :actions actions
                 :overrides overrides}])]])]))