import Controller, { inject as controller } from "@ember/controller";
import { alias, sort } from "@ember/object/computed";
import GrantBadgeController from "discourse/mixins/grant-badge-controller";
import I18n from "I18n";
import discourseComputed from "discourse-common/utils/decorators";
import { next } from "@ember/runloop";
import { popupAjaxError } from "discourse/lib/ajax-error";
import { inject as service } from "@ember/service";

export default Controller.extend(GrantBadgeController, {
  adminUser: controller(),
  dialog: service(),
  user: alias("adminUser.model"),
  userBadges: alias("model"),
  allBadges: alias("badges"),
  sortedBadges: sort("model", "badgeSortOrder"),

  init() {
    this._super(...arguments);

    this.badgeSortOrder = ["granted_at:desc"];
  },

  @discourseComputed("model", "model.[]", "model.expandedBadges.[]")
  groupedBadges() {
    const allBadges = this.model;

    let grouped = {};
    allBadges.forEach((b) => {
      grouped[b.badge_id] = grouped[b.badge_id] || [];
      grouped[b.badge_id].push(b);
    });

    let expanded = [];
    const expandedBadges = allBadges.get("expandedBadges") || [];

    Object.values(grouped).forEach(function (badges) {
      let lastGranted = badges[0].granted_at;

      badges.forEach((badge) => {
        lastGranted =
          lastGranted < badge.granted_at ? badge.granted_at : lastGranted;
      });

      if (badges.length === 1 || expandedBadges.includes(badges[0].badge.id)) {
        badges.forEach((badge) => expanded.push(badge));
        return;
      }

      let result = {
        badge: badges[0].badge,
        granted_at: lastGranted,
        badges,
        count: badges.length,
        grouped: true,
      };

      expanded.push(result);
    });

    return expanded.sortBy("granted_at").reverse();
  },

  actions: {
    expandGroup(userBadge) {
      const model = this.model;
      model.set("expandedBadges", model.get("expandedBadges") || []);
      model.get("expandedBadges").pushObject(userBadge.badge.id);
    },

    grantBadge() {
      this.grantBadge(
        this.selectedBadgeId,
        this.get("user.username"),
        this.badgeReason
      ).then(
        () => {
          this.set("badgeReason", "");
          next(() => {
            // Update the selected badge ID after the combobox has re-rendered.
            const newSelectedBadge = this.grantableBadges[0];
            if (newSelectedBadge) {
              this.set("selectedBadgeId", newSelectedBadge.get("id"));
            }
          });
        },
        function (error) {
          popupAjaxError(error);
        }
      );
    },

    revokeBadge(userBadge) {
      return this.dialog.yesNoConfirm({
        message: I18n.t("admin.badges.revoke_confirm"),
        didConfirm: () => {
          return userBadge.revoke().then(() => {
            this.model.removeObject(userBadge);
          });
        },
      });
    },
  },
});