import { Instance } from "types/instance";

interface Config {
  confirmIcon?: string;
  confirmText?: string;
  showAlways?: boolean;
  theme?: string;
}

const defaultConfig: Config = {
  confirmIcon:
    "<svg version='1.1' xmlns='http://www.w3.org/2000/svg' xmlns:xlink='http://www.w3.org/1999/xlink' width='17' height='17' viewBox='0 0 17 17'> <g> </g> <path d='M15.418 1.774l-8.833 13.485-4.918-4.386 0.666-0.746 4.051 3.614 8.198-12.515 0.836 0.548z' fill='#000000' /> </svg>",
  confirmText: "OK ",
  showAlways: false,
  theme: "light",
};

function confirmDatePlugin(pluginConfig: Config) {
  const config = { ...defaultConfig, ...pluginConfig };
  let confirmContainer: HTMLDivElement;

  return function(fp: Instance) {
    const hooks = {
      onKeyDown(_: Date[], __: string, ___: Instance, e: KeyboardEvent) {
        if (fp.config.enableTime && e.key === "Tab" && e.target === fp.amPM) {
          e.preventDefault();
          confirmContainer.focus();
        } else if (e.key === "Enter" && e.target === confirmContainer)
          fp.close();
      },

      onReady() {
        if (fp.calendarContainer === undefined) return;

        confirmContainer = fp._createElement<HTMLDivElement>(
          "div",
          `flatpickr-confirm ${config.showAlways
            ? "visible"
            : ""} ${config.theme}Theme`,
          config.confirmText
        );

        confirmContainer.tabIndex = -1;
        confirmContainer.innerHTML += config.confirmIcon;

        confirmContainer.addEventListener("click", fp.close);
        fp.calendarContainer.appendChild(confirmContainer);
      },
      ...!config.showAlways
        ? {
            onChange: function(_: Date, dateStr: string) {
              const showCondition =
                fp.config.enableTime || fp.config.mode === "multiple";
              if (dateStr && !fp.config.inline && showCondition)
                return confirmContainer.classList.add("visible");
              confirmContainer.classList.remove("visible");
            },
          }
        : {},
    };

    return hooks;
  };
}

export default confirmDatePlugin;