import { defineStore } from "pinia";
import { MainView, ColourScheme, PersonalEvent } from "../types";
import { useStudenthubStore } from "./studenthub";
import { TaughtClass } from "../api/types/semesters/versions/class";
import { Module } from "../api/types/modules";

const SELECTED_DEGREE_PROGRAM_KEY = "selectedDegreeProgram";
const HIDE_COMPLETED_CLASSES_KEY = "hideCompletedClasses";

window
  .matchMedia("(prefers-color-scheme: dark)")
  .addEventListener("change", (event) => {
    const stateStore = useStateStore();
    stateStore.colourScheme = event.matches
      ? ColourScheme.Dark
      : ColourScheme.Blinding;
  });

export const useStateStore = defineStore("state", {
  state: () => {
    const colourScheme =
      window.matchMedia &&
      window.matchMedia("(prefers-color-scheme: dark)").matches
        ? ColourScheme.Dark
        : ColourScheme.Blinding;
    return {
      currentView: MainView.ModulePlanner,
      colourScheme: colourScheme,
      inspectingClass: null as TaughtClass | null,
      inspectingModule: null as Module | null,
      inspectingPersonalEvent: null as boolean | null | PersonalEvent,
      showingSettings: false,
      showingModuleSearch: false,
      showingClassUpgradeModal: false,
      showingOldPlanReminderModal: false,
      upgradingClassVersion: false,
      lastSelectedDegreeProgram:
        localStorage[SELECTED_DEGREE_PROGRAM_KEY] ?? "",
      __hideCompletedClasses: null as boolean | null,
      highlightBBModules: false,
      highlightVTModules: false,
      highlightFirstPhaseModules: false,
      highlightEnglishModules: false,
      highlightMSPModules: false,
      highlightContextModules: false,
      hasShownHelpWantedModal: false,
    };
  },

  getters: {
    hideCompletedClasses(): boolean {
      const studenthubStore = useStudenthubStore();
      if (!studenthubStore.hasAllStudenthubData) return false;
      if (this.__hideCompletedClasses != null)
        return this.__hideCompletedClasses;
      this.__hideCompletedClasses =
        localStorage[HIDE_COMPLETED_CLASSES_KEY] == "true";
      return this.__hideCompletedClasses;
    },
    hasHighlightedModules(): boolean {
      return (
        this.highlightBBModules ||
        this.highlightVTModules ||
        this.highlightFirstPhaseModules ||
        this.highlightEnglishModules ||
        this.highlightMSPModules ||
        this.highlightContextModules
      );
    },
  },

  actions: {
    updateLastSelectedDegreeProgram(prg: string) {
      localStorage[SELECTED_DEGREE_PROGRAM_KEY] = prg;
    },
    updateHideCompletedClasses(state: boolean) {
      localStorage[HIDE_COMPLETED_CLASSES_KEY] = state ? "true" : "false";
      this.__hideCompletedClasses = state;
    },
  },
});