import { Credentials, DoorSaved, SiteConfigModel } from "@/lib/api";
import { Door } from "@/lib/door";
import { Advent22 } from "@/plugins/advent22";
import { RemovableRef, useLocalStorage } from "@vueuse/core";
import { AxiosBasicCredentials, AxiosError } from "axios";
import { toast } from "bulma-toast";
import { acceptHMRUpdate, defineStore } from "pinia";

declare global {
  interface Navigator {
    readonly msMaxTouchPoints: number;
  }
}

type State = {
  advent22: Advent22;
  api_creds: RemovableRef<Credentials>;
  is_initialized: boolean;
  on_initialized: (() => void)[];
  is_touch_device: boolean;
  is_admin: boolean;
  site_config: SiteConfigModel;
  calendar_background_image: string | undefined;
  calendar_aspect_ratio: number;
  user_doors: Door[];
  next_door_target: number | null;
};

export const advent22Store = defineStore({
  id: "advent22",

  state: (): State => ({
    advent22: new Advent22(),
    api_creds: useLocalStorage("advent22/auth", ["", ""]),
    is_initialized: false,
    on_initialized: [],
    is_touch_device:
      window.matchMedia("(any-hover: none)").matches ||
      "ontouchstart" in window ||
      navigator.maxTouchPoints > 0 ||
      navigator.msMaxTouchPoints > 0,
    is_admin: false,
    site_config: {
      title: document.title,
      subtitle: "",
      content: "",
      footer: "",
    },
    calendar_background_image: undefined,
    calendar_aspect_ratio: 1,
    user_doors: [],
    next_door_target: null,
  }),

  getters: {
    axios_creds: (state): AxiosBasicCredentials => {
      const [username, password] = state.api_creds;
      return { username: username, password: password };
    },
  },

  actions: {
    init(): void {
      this.update()
        .then(() => {
          this.is_initialized = true;
          for (const callback of this.on_initialized) callback();
        })
        .catch(this.alert_user_error);
    },

    format_user_error([reason, endpoint]: [unknown, string]): string {
      let msg =
        "Unbekannter Fehler, bitte wiederholen! Besteht das Problem länger, bitte Admin benachrichtigen!";
      let code = "U";
      const result = () => `${msg} (Fehlercode: ${code}/${endpoint})`;

      if (!(reason instanceof AxiosError)) return result();

      switch (reason.code) {
        case "ECONNABORTED":
          // API unerreichbar
          msg =
            "API antwortet nicht, bitte später wiederholen! Besteht das Problem länger, bitte Admin benachrichtigen!";
          code = "D";
          break;

        case "ERR_NETWORK":
          // Netzwerk nicht verbunden
          msg = "Sieht aus, als sei deine Netzwerkverbindung gestört.";
          code = "N";
          break;

        default:
          if (reason.response === undefined) return result();

          switch (reason.response.status) {
            case 401:
              // UNAUTHORIZED
              msg = "Netter Versuch :)";
              code = "A";
              break;

            case 422:
              // UNPROCESSABLE ENTITY
              msg = "Funktion ist kaputt, bitte Admin benachrichtigen!";
              code = "I";
              break;

            default:
              // HTTP
              code = `H${reason.response.status}`;
              break;
          }
          break;
      }

      return result();
    },

    alert_user_error(param: [unknown, string]): void {
      toast({
        message: this.format_user_error(param),
        type: "is-danger",
      });
    },

    update(): Promise<void> {
      return new Promise((resolve, reject) => {
        this.advent22
          .api_get_blob("user/favicon")
          .then((favicon_src) => {
            const link: HTMLLinkElement =
              document.querySelector("link[rel*='icon']") ||
              document.createElement("link");
            link.rel = "shortcut icon";
            link.type = "image/x-icon";
            link.href = favicon_src;

            if (link.parentElement === null)
              document.getElementsByTagName("head")[0].appendChild(link);
          })
          .catch(() => {});

        Promise.all([
          this.update_is_admin(),
          this.advent22.api_get<SiteConfigModel>("user/site_config"),
          this.advent22.api_get_blob("user/background_image"),
          this.advent22.api_get<DoorSaved[]>("user/doors"),
          this.advent22.api_get<number | null>("user/next_door"),
        ])
          .then(
            ([
              is_admin,
              site_config,
              background_image,
              user_doors,
              next_door,
            ]) => {
              is_admin; // discard value

              document.title = site_config.title;

              if (site_config.subtitle !== "")
                document.title += " – " + site_config.subtitle;

              this.site_config = site_config;

              this.calendar_background_image = background_image;

              this.user_doors.length = 0;
              for (const door_saved of user_doors) {
                this.user_doors.push(Door.load(door_saved));
              }

              if (next_door !== null)
                this.next_door_target = Date.now() + next_door;

              resolve();
            },
          )
          .catch(reject);
      });
    },

    when_initialized(callback: () => void): void {
      if (this.is_initialized) {
        callback();
      } else {
        this.on_initialized.push(callback);
      }
    },

    update_is_admin(): Promise<boolean> {
      return new Promise((resolve, reject) => {
        this.advent22
          .api_get<boolean>("admin/is_admin")
          .then((is_admin) => {
            this.is_admin = is_admin;
            resolve(is_admin);
          })
          .catch(reject);
      });
    },

    login(creds: Credentials): Promise<boolean> {
      this.api_creds = creds;
      return this.update_is_admin();
    },

    logout(): Promise<boolean> {
      return this.login(["", ""]);
    },

    toggle_touch_device(): void {
      this.is_touch_device = !this.is_touch_device;
    },

    set_calendar_aspect_ratio(rect: DOMRectReadOnly): void {
      const result = rect.width / rect.height;

      // filter suspicious results
      if (result !== 0 && isFinite(result) && !isNaN(result))
        this.calendar_aspect_ratio = result;
    },
  },
});

if (import.meta.webpackHot) {
  import.meta.webpackHot.accept(
    acceptHMRUpdate(advent22Store, import.meta.webpackHot),
  );
}