import {ipcRenderer} from "electron";

import * as ConfigUtil from "../../../../common/config-util";
import type {HTML} from "../../../../common/html";
import {html} from "../../../../common/html";
import * as t from "../../../../common/translation-util";

import {generateSettingOption} from "./base-section";

interface NetworkSectionProps {
  $root: Element;
}

export default class NetworkSection {
  props: NetworkSectionProps;
  $proxyPAC: HTMLInputElement;
  $proxyRules: HTMLInputElement;
  $proxyBypass: HTMLInputElement;
  $proxySaveAction: Element;
  $manualProxyBlock: Element;
  constructor(props: NetworkSectionProps) {
    this.props = props;
  }

  templateHTML(): HTML {
    return html`
      <div class="settings-pane">
        <div class="title">${t.__("Proxy")}</div>
        <div id="appearance-option-settings" class="settings-card">
          <div class="setting-row" id="use-system-settings">
            <div class="setting-description">
              ${t.__("Use system proxy settings (requires restart)")}
            </div>
            <div class="setting-control"></div>
          </div>
          <div class="setting-row" id="use-manual-settings">
            <div class="setting-description">
              ${t.__("Manual proxy configuration")}
            </div>
            <div class="setting-control"></div>
          </div>
          <div class="manual-proxy-block">
            <div class="setting-row" id="proxy-pac-option">
              <span class="setting-input-key">PAC ${t.__("script")}</span>
              <input
                class="setting-input-value"
                placeholder="e.g. foobar.com/pacfile.js"
              />
            </div>
            <div class="setting-row" id="proxy-rules-option">
              <span class="setting-input-key">${t.__("Proxy rules")}</span>
              <input
                class="setting-input-value"
                placeholder="e.g. http=foopy:80;ftp=foopy2"
              />
            </div>
            <div class="setting-row" id="proxy-bypass-option">
              <span class="setting-input-key"
                >${t.__("Proxy bypass rules")}</span
              >
              <input
                class="setting-input-value"
                placeholder="e.g. foobar.com"
              />
            </div>
            <div class="setting-row">
              <div class="action green" id="proxy-save-action">
                <span>${t.__("Save")}</span>
              </div>
            </div>
          </div>
        </div>
      </div>
    `;
  }

  init(): void {
    this.props.$root.innerHTML = this.templateHTML().html;
    this.$proxyPAC = document.querySelector(
      "#proxy-pac-option .setting-input-value",
    );
    this.$proxyRules = document.querySelector(
      "#proxy-rules-option .setting-input-value",
    );
    this.$proxyBypass = document.querySelector(
      "#proxy-bypass-option .setting-input-value",
    );
    this.$proxySaveAction = document.querySelector("#proxy-save-action");
    this.$manualProxyBlock = this.props.$root.querySelector(
      ".manual-proxy-block",
    );
    this.initProxyOption();

    this.$proxyPAC.value = ConfigUtil.getConfigItem("proxyPAC", "");
    this.$proxyRules.value = ConfigUtil.getConfigItem("proxyRules", "");
    this.$proxyBypass.value = ConfigUtil.getConfigItem("proxyBypass", "");

    this.$proxySaveAction.addEventListener("click", () => {
      ConfigUtil.setConfigItem("proxyPAC", this.$proxyPAC.value);
      ConfigUtil.setConfigItem("proxyRules", this.$proxyRules.value);
      ConfigUtil.setConfigItem("proxyBypass", this.$proxyBypass.value);

      ipcRenderer.send("forward-message", "reload-proxy", true);
    });
  }

  initProxyOption(): void {
    const manualProxyEnabled = ConfigUtil.getConfigItem(
      "useManualProxy",
      false,
    );
    this.toggleManualProxySettings(manualProxyEnabled);

    this.updateProxyOption();
  }

  toggleManualProxySettings(option: boolean): void {
    if (option) {
      this.$manualProxyBlock.classList.remove("hidden");
    } else {
      this.$manualProxyBlock.classList.add("hidden");
    }
  }

  updateProxyOption(): void {
    generateSettingOption({
      $element: document.querySelector("#use-system-settings .setting-control"),
      value: ConfigUtil.getConfigItem("useSystemProxy", false),
      clickHandler: () => {
        const newValue = !ConfigUtil.getConfigItem("useSystemProxy");
        const manualProxyValue = ConfigUtil.getConfigItem("useManualProxy");
        if (manualProxyValue && newValue) {
          ConfigUtil.setConfigItem("useManualProxy", !manualProxyValue);
          this.toggleManualProxySettings(!manualProxyValue);
        }

        if (!newValue) {
          // Remove proxy system proxy settings
          ConfigUtil.setConfigItem("proxyRules", "");
          ipcRenderer.send("forward-message", "reload-proxy", false);
        }

        ConfigUtil.setConfigItem("useSystemProxy", newValue);
        this.updateProxyOption();
      },
    });
    generateSettingOption({
      $element: document.querySelector("#use-manual-settings .setting-control"),
      value: ConfigUtil.getConfigItem("useManualProxy", false),
      clickHandler: () => {
        const newValue = !ConfigUtil.getConfigItem("useManualProxy");
        const systemProxyValue = ConfigUtil.getConfigItem("useSystemProxy");
        this.toggleManualProxySettings(newValue);
        if (systemProxyValue && newValue) {
          ConfigUtil.setConfigItem("useSystemProxy", !systemProxyValue);
        }

        ConfigUtil.setConfigItem("proxyRules", "");
        ConfigUtil.setConfigItem("useManualProxy", newValue);
        // Reload app only when turning manual proxy off, hence !newValue
        ipcRenderer.send("forward-message", "reload-proxy", !newValue);
        this.updateProxyOption();
      },
    });
  }
}