(ns core
  (:require [clojure.tools.cli :refer [parse-opts]]
            [import :as import]
            [parse :refer [parse]]
            [lambdaisland.deep-diff2 :as dd])
  (:gen-class))

;; TODO: Need some tests now it's working.

(defn sort-postings [transactions]
  (for [t transactions]
    (update t :postings
            (fn [ps] (sort-by (juxt #(get-in % [:meta :entity]) :account :amount) (filter #(not (zero? (:amount %))) ps))))))


(def cli-options
  [[nil "--csv FILE" "Pay Item Details CSV report"]
   [nil "--pay-date DATE" "Date for the payroll transactions (YYYY-MM-DD)"
    :validate [#(re-matches #"\d{4}-\d{2}-\d{2}" %) "Must be of format YYYY-MM-DD"]
    :default "FIXME"]
   [nil "--period PERIOD" "Month/year covered by the pay run eg. \"December 2023\""
    :default "FIXME"]
   [nil "--pay-receipt-no REFERENCE" "Payroll receipt number, eg. \"rt:111/222\""
    :default "FIXME"]
   [nil "--pay-invoice-no REFERENCE" "Payroll invoice number, eg. \"rt:111/222\""
    :default "FIXME"]
   [nil "--total-fees NUM" "Total fee charged by Paychex, eg. \"206.50\""
    :default (bigdec 0)]
   [nil "--fees-receipt-no REFERENCE" "Paychex fees receipt number, eg. \"rt:111/222\""
    :default "FIXME"]
   [nil "--fees-invoice-no REFERENCE" "Paychex fees invoice number, eg. \"rt:111/222\""
    :default "FIXME"]
   [nil "--retirement-date DATE" "Date for the retirement transactions (YYYY-MM-DD)"
    :validate [#(re-matches #"\d{4}-\d{2}-\d{2}" %) "Must be of format YYYY-MM-DD"]
    :default "FIXME"]
   [nil "--retirement-receipt-no REFERENCE" "Retirement receipt number, eg. \"rt:111/222\""
    :default "FIXME"]
   [nil "--retirement-invoice-no REFERENCE" "Retirement receipt number, eg. \"rt:111/222\""
    :default "FIXME"]
   ["-h" "--help"]])

(defn -main [& args]
  (let [{:keys [options _arguments _errors summary]} (parse-opts args cli-options)
        {:keys [pay-date period pay-receipt-no pay-invoice-no total-fees fees-receipt-no fees-invoice-no retirement-date retirement-receipt-no retirement-invoice-no]} options]
    (when (:help options)
      (println summary)
      (System/exit 0))
    (let [grouped-data (import/read-grouped-csv (:csv options))
          imported (concat [(import/import-monthly-payroll pay-date period pay-receipt-no grouped-data)]
                           (import/import-individual-taxes pay-date period pay-receipt-no pay-invoice-no grouped-data)
                           [(import/import-employer-taxes pay-date period pay-receipt-no grouped-data)]
                           [(import/payroll-fees pay-date period fees-receipt-no fees-invoice-no total-fees grouped-data)]
                           [(import/import-retirement retirement-date period retirement-receipt-no retirement-invoice-no grouped-data)])]
      (doseq [i imported]
        (println (import/render-transaction i))))))

(comment
  (require '[examples :as examples])
  (def grouped-data (import/read-grouped-csv "/home/ben/Downloads/2023-12-27_Pay-Item-Details_2023-12-2.csv"))
  (def imported
    (concat [(import/import-monthly-payroll "2023-12-29" "December 2023" "rt:19462/674660" grouped-data)]
            (import/import-individual-taxes "2023-12-29" "December 2023" "rt:19462/674660" "rt:19403/675431" grouped-data)
            [(import/import-employer-taxes "2023-12-29" "December 2023" "rt:19462/674660" grouped-data)]
            [(import/payroll-fees "2023-12-29" "December 2023" "rt:19459/675387" "rt:19459/674887" (bigdec 206.50) grouped-data)]
            [(import/import-retirement "2024-01-02" "December 2023" "rt:19403/676724" "rt:19403/675431" grouped-data)]))

  (dd/pretty-print
   (dd/diff
    (sort-postings (parse examples/human))
    (sort-postings imported)))

  (doseq [i imported]
    (println (import/render-transaction i)))

  )