import React, { useState, useEffect } from "react";
import { Menu } from "./components/menu";
import { OlSearchBar } from "../components/olsearchbar";
import { OlAccordion } from "../components/olaccordion";
import { getApp } from "../../olympusapp";
import { OlUnitListEntry } from "../components/olunitlistentry";
import { UnitSpawnMenu } from "./unitspawnmenu";
import { SpawnRequestTable, UnitBlueprint } from "../../interfaces";
import {
  olButtonsVisibilityAircraft,
  olButtonsVisibilityGroundunit,
  olButtonsVisibilityGroundunitSam,
  olButtonsVisibilityHelicopter,
  olButtonsVisibilityNavyunit,
} from "../components/olicons";
import { faExplosion, faSmog } from "@fortawesome/free-solid-svg-icons";
import { OlEffectListEntry } from "../components/oleffectlistentry";
import { EffectSpawnMenu } from "./effectspawnmenu";
import { BLUE_COMMANDER, COMMAND_MODE_OPTIONS_DEFAULTS, GAME_MASTER, NO_SUBSTATE, OlympusState } from "../../constants/constants";
import { AppStateChangedEvent, CommandModeOptionsChangedEvent, StarredSpawnsChangedEvent, UnitDatabaseLoadedEvent } from "../../events";

enum CategoryAccordion {
  NONE,
  AIRCRAFT,
  HELICOPTER,
  SAM,
  AAA,
  GROUND_UNIT,
  NAVY_UNIT,
  EFFECT,
}

export function SpawnMenu(props: { open: boolean; onClose: () => void; children?: JSX.Element | JSX.Element[] }) {
  const [openAccordion, setOpenAccordion] = useState(CategoryAccordion.NONE);
  const [blueprint, setBlueprint] = useState(null as null | UnitBlueprint);
  const [effect, setEffect] = useState(null as null | string);
  const [filterString, setFilterString] = useState("");
  const [selectedRole, setSelectedRole] = useState(null as null | string);
  const [selectedType, setSelectedType] = useState(null as null | string);
  const [blueprints, setBlueprints] = useState([] as UnitBlueprint[]);
  const [roles, setRoles] = useState({ aircraft: [] as string[], helicopter: [] as string[] });
  const [types, setTypes] = useState({ groundunit: [] as string[], navyunit: [] as string[] });
  const [commandModeOptions, setCommandModeOptions] = useState(COMMAND_MODE_OPTIONS_DEFAULTS);
  const [showCost, setShowCost] = useState(false);
  const [starredSpawns, setStarredSpawns] = useState({} as { [key: string]: SpawnRequestTable });

  useEffect(() => {
    if (selectedRole) setBlueprints(getApp()?.getUnitsManager().getDatabase().getByRole(selectedRole));
    else if (selectedType) setBlueprints(getApp()?.getUnitsManager().getDatabase().getByType(selectedType));
    else setBlueprints(getApp()?.getUnitsManager().getDatabase().getBlueprints());
  }, [selectedRole, selectedType, openAccordion]);

  useEffect(() => {
    UnitDatabaseLoadedEvent.on(() => {
      setRoles({
        aircraft: getApp()
          ?.getUnitsManager()
          .getDatabase()
          .getRoles((unit) => unit.category === "aircraft"),
        helicopter: getApp()
          ?.getUnitsManager()
          .getDatabase()
          .getRoles((unit) => unit.category === "helicopter"),
      });

      setTypes({
        groundunit: getApp()
          ?.getUnitsManager()
          .getDatabase()
          .getTypes((unit) => unit.category === "groundunit"),
        navyunit: getApp()
          ?.getUnitsManager()
          .getDatabase()
          .getTypes((unit) => unit.category === "navyunit"),
      });
    });

    AppStateChangedEvent.on((state, subState) => {
      if (subState === NO_SUBSTATE) {
        setBlueprint(null);
        setEffect(null);
      }
    });

    CommandModeOptionsChangedEvent.on((commandModeOptions) => {
      setCommandModeOptions(commandModeOptions);
      setShowCost(!(commandModeOptions.commandMode == GAME_MASTER || !commandModeOptions.restrictSpawns));
      setOpenAccordion(CategoryAccordion.NONE);
    });

    StarredSpawnsChangedEvent.on((starredSpawns) => setStarredSpawns({ ...starredSpawns }));
  }, []);

  /* Filter the blueprints according to the label */
  const filteredBlueprints: UnitBlueprint[] = [];
  if (blueprints) {
    blueprints.forEach((blueprint) => {
      if (blueprint.enabled && (filterString === "" || blueprint.label.toLowerCase().includes(filterString.toLowerCase()))) filteredBlueprints.push(blueprint);
    });
  }

  useEffect(() => {
    if (!props.open) {
      if (blueprint !== null) setBlueprint(null);
      if (effect !== null) setEffect(null);
      if (filterString !== "") setFilterString("");
      if (openAccordion !== CategoryAccordion.NONE) setOpenAccordion(CategoryAccordion.NONE);
    }
  });

  return (
    <Menu
      {...props}
      title="Spawn menu"
      showBackButton={blueprint !== null || effect !== null}
      onBack={() => {
        getApp().setState(OlympusState.SPAWN);
        setBlueprint(null);
        setEffect(null);
      }}
      wiki={() => {
        return (
          <div className="h-full overflow-auto p-4 text-gray-400 no-scrollbar">
            <h2 className="mb-4 font-bold">Spawn menu</h2>
            <p>The spawn menu allows you to spawn new units in the current mission.</p>
            <p>Moreover, it allows you to spawn effects like smokes and explosions.</p>
            <p className="mt-2">You can use the search bar to quickly find a specific unit. Otherwise, open the category you are interested in, and use the filters to refine your selection. </p>
            <img src="images/training/unitfilter.png" className={`
              mx-auto my-4 w-[80%] rounded-lg
              drop-shadow-[0_0px_7px_rgba(255,255,255,0.07)]
            `} />
            <div className="mt-2">Click on a unit to enter the spawn properties menu. The menu is divided into multiple sections:
              <ul className="ml-4 mt-2 list-inside list-decimal">
                <li>Unit name and short description</li>
                <li>Quick access name </li>
                <li>Spawn properties</li>
                <li>Loadout description</li>
              </ul>
            </div>
            <p>To get more info on each control, hover your cursor on it.</p>
            <h2 className="my-4 font-bold">Quick access</h2>
            <p>If you plan on reusing the same spawn multiple times during the mission, you can "star" the spawn properties. This will allow you to reuse them quickly multiple times. The starred spawn will save all settings, so you can create starred spawn with multiple variations, e.g. loadouts, or skill levels.</p>
            <img src="images/training/starred.png" className={`
              mx-auto my-4 w-[80%] rounded-lg
              drop-shadow-[0_0px_7px_rgba(255,255,255,0.07)]
            `} />
          </div>
        );
      }}
    >
      <>
        {blueprint === null && effect === null && (
          <div className="p-5">
            <OlSearchBar onChange={(value) => setFilterString(value)} text={filterString} />
            <OlAccordion
              title={`Aircraft`}
              open={openAccordion == CategoryAccordion.AIRCRAFT}
              onClick={() => {
                setOpenAccordion(openAccordion === CategoryAccordion.AIRCRAFT ? CategoryAccordion.NONE : CategoryAccordion.AIRCRAFT);
                setSelectedRole(null);
                setSelectedType(null);
              }}
            >
              <div className="mb-2 flex flex-wrap gap-1">
                {roles.aircraft.sort().map((role) => {
                  return (
                    <div
                      key={role}
                      data-selected={selectedRole === role}
                      className={`
                        cursor-pointer rounded-full bg-olympus-800 px-2 py-0.5
                        text-xs font-bold text-olympus-50
                        data-[selected='true']:bg-blue-500
                        data-[selected='true']:text-gray-200
                      `}
                      onClick={() => {
                        selectedRole === role ? setSelectedRole(null) : setSelectedRole(role);
                      }}
                    >
                      {role}
                    </div>
                  );
                })}
              </div>
              <div
                className={`
                  flex max-h-[450px] flex-col gap-1 overflow-y-scroll
                  no-scrollbar
                `}
              >
                {filteredBlueprints
                  .filter((blueprint) => blueprint.category === "aircraft")
                  .map((blueprint) => {
                    return (
                      <OlUnitListEntry
                        key={blueprint.name}
                        silhouette={blueprint.filename}
                        blueprint={blueprint}
                        onClick={() => setBlueprint(blueprint)}
                        showCost={showCost}
                        cost={getApp().getUnitsManager().getDatabase().getSpawnPointsByName(blueprint.name)}
                      />
                    );
                  })}
              </div>
            </OlAccordion>
            <OlAccordion
              title={`Helicopters`}
              open={openAccordion == CategoryAccordion.HELICOPTER}
              onClick={() => {
                setOpenAccordion(openAccordion === CategoryAccordion.HELICOPTER ? CategoryAccordion.NONE : CategoryAccordion.HELICOPTER);
                setSelectedRole(null);
                setSelectedType(null);
              }}
            >
              <div className="mb-2 flex flex-wrap gap-1">
                {roles.helicopter.sort().map((role) => {
                  return (
                    <div
                      key={role}
                      data-selected={selectedRole === role}
                      className={`
                        cursor-pointer rounded-full bg-olympus-800 px-2 py-0.5
                        text-xs font-bold text-olympus-50
                        data-[selected='true']:bg-blue-500
                        data-[selected='true']:text-gray-200
                      `}
                      onClick={() => {
                        selectedRole === role ? setSelectedRole(null) : setSelectedRole(role);
                      }}
                    >
                      {role}
                    </div>
                  );
                })}
              </div>
              <div
                className={`
                  flex max-h-[450px] flex-col gap-1 overflow-y-scroll
                  no-scrollbar
                `}
              >
                {filteredBlueprints
                  .filter((blueprint) => blueprint.category === "helicopter")
                  .map((blueprint) => {
                    return (
                      <OlUnitListEntry
                        key={blueprint.name}
                        icon={olButtonsVisibilityHelicopter}
                        blueprint={blueprint}
                        onClick={() => setBlueprint(blueprint)}
                        showCost={showCost}
                        cost={getApp().getUnitsManager().getDatabase().getSpawnPointsByName(blueprint.name)}
                      />
                    );
                  })}
              </div>
            </OlAccordion>
            <OlAccordion
              title={`Surface to Air Missiles (SAM sites)`}
              open={openAccordion == CategoryAccordion.SAM}
              onClick={() => {
                setOpenAccordion(openAccordion === CategoryAccordion.SAM ? CategoryAccordion.NONE : CategoryAccordion.SAM);
                setSelectedRole(null);
                setSelectedType(null);
              }}
            >
              <div
                className={`
                  flex max-h-[450px] flex-col gap-1 overflow-y-scroll
                  no-scrollbar
                `}
              >
                {filteredBlueprints
                  .filter((blueprint) => blueprint.category === "groundunit" && blueprint.type === "SAM Site")
                  .map((blueprint) => {
                    return (
                      <OlUnitListEntry
                        key={blueprint.name}
                        icon={olButtonsVisibilityGroundunitSam}
                        blueprint={blueprint}
                        onClick={() => setBlueprint(blueprint)}
                        showCost={showCost}
                        cost={getApp().getUnitsManager().getDatabase().getSpawnPointsByName(blueprint.name)}
                      />
                    );
                  })}
              </div>
            </OlAccordion>
            <OlAccordion
              title={`Anti Aircraft Artillery (AAA)`}
              open={openAccordion == CategoryAccordion.AAA}
              onClick={() => {
                setOpenAccordion(openAccordion === CategoryAccordion.AAA ? CategoryAccordion.NONE : CategoryAccordion.AAA);
                setSelectedRole(null);
                setSelectedType(null);
              }}
            >
              <div
                className={`
                  flex max-h-[450px] flex-col gap-1 overflow-y-scroll
                  no-scrollbar
                `}
              >
                {filteredBlueprints
                  .filter((blueprint) => blueprint.canAAA)
                  .map((blueprint) => {
                    return (
                      <OlUnitListEntry
                        key={blueprint.name}
                        icon={olButtonsVisibilityGroundunitSam}
                        blueprint={blueprint}
                        onClick={() => setBlueprint(blueprint)}
                        showCost={showCost}
                        cost={getApp().getUnitsManager().getDatabase().getSpawnPointsByName(blueprint.name)}
                      />
                    );
                  })}
              </div>
            </OlAccordion>
            <OlAccordion
              title={`Ground Units`}
              open={openAccordion == CategoryAccordion.GROUND_UNIT}
              onClick={() => {
                setOpenAccordion(openAccordion === CategoryAccordion.GROUND_UNIT ? CategoryAccordion.NONE : CategoryAccordion.GROUND_UNIT);
                setSelectedRole(null);
                setSelectedType(null);
              }}
            >
              <div className="mb-2 flex flex-wrap gap-1">
                {types.groundunit
                  .sort()
                  .filter((type) => type !== "SAM Site")
                  .map((type) => {
                    return (
                      <div
                        key={type}
                        data-selected={selectedType === type}
                        className={`
                          cursor-pointer rounded-full bg-olympus-800 px-2 py-0.5
                          text-xs font-bold text-olympus-50
                          data-[selected='true']:bg-blue-500
                          data-[selected='true']:text-gray-200
                        `}
                        onClick={() => {
                          selectedType === type ? setSelectedType(null) : setSelectedType(type);
                        }}
                      >
                        {type}
                      </div>
                    );
                  })}
              </div>
              <div
                className={`
                  flex max-h-[450px] flex-col gap-1 overflow-y-scroll
                  no-scrollbar
                `}
              >
                {filteredBlueprints
                  .filter((blueprint) => blueprint.category === "groundunit" && blueprint.type !== "SAM Site")
                  .map((blueprint) => {
                    return (
                      <OlUnitListEntry
                        key={blueprint.name}
                        icon={olButtonsVisibilityGroundunit}
                        blueprint={blueprint}
                        onClick={() => setBlueprint(blueprint)}
                        showCost={showCost}
                        cost={getApp().getUnitsManager().getDatabase().getSpawnPointsByName(blueprint.name)}
                      />
                    );
                  })}
              </div>
            </OlAccordion>
            <OlAccordion
              title={`Ships and submarines`}
              open={openAccordion == CategoryAccordion.NAVY_UNIT}
              onClick={() => {
                setOpenAccordion(openAccordion === CategoryAccordion.NAVY_UNIT ? CategoryAccordion.NONE : CategoryAccordion.NAVY_UNIT);
                setSelectedRole(null);
                setSelectedType(null);
              }}
            >
              <div className="mb-2 flex flex-wrap gap-1">
                {types.navyunit.sort().map((type) => {
                  return (
                    <div
                      key={type}
                      data-selected={selectedType === type}
                      className={`
                        cursor-pointer rounded-full bg-olympus-800 px-2 py-0.5
                        text-xs font-bold text-olympus-50
                        data-[selected='true']:bg-blue-500
                        data-[selected='true']:text-gray-200
                      `}
                      onClick={() => {
                        selectedType === type ? setSelectedType(null) : setSelectedType(type);
                      }}
                    >
                      {type}
                    </div>
                  );
                })}
              </div>
              <div
                className={`
                  flex max-h-[450px] flex-col gap-1 overflow-y-scroll
                  no-scrollbar
                `}
              >
                {filteredBlueprints
                  .filter((blueprint) => blueprint.category === "navyunit")
                  .map((blueprint) => {
                    return (
                      <OlUnitListEntry
                        key={blueprint.name}
                        icon={olButtonsVisibilityNavyunit}
                        blueprint={blueprint}
                        onClick={() => setBlueprint(blueprint)}
                        showCost={showCost}
                        cost={getApp().getUnitsManager().getDatabase().getSpawnPointsByName(blueprint.name)}
                      />
                    );
                  })}
              </div>
            </OlAccordion>
            <OlAccordion
              title="Effects (smokes, explosions etc)"
              open={openAccordion == CategoryAccordion.EFFECT}
              onClick={() => {
                setOpenAccordion(openAccordion === CategoryAccordion.EFFECT ? CategoryAccordion.NONE : CategoryAccordion.EFFECT);
                setSelectedRole(null);
                setSelectedType(null);
              }}
            >
              <div
                className={`
                  flex max-h-[450px] flex-col gap-1 overflow-y-scroll
                  no-scrollbar
                `}
              >
                <OlEffectListEntry
                  key={"explosion"}
                  icon={faExplosion}
                  label={"Explosion"}
                  onClick={() => {
                    setEffect("explosion");
                  }}
                />
                <OlEffectListEntry
                  key={"smoke"}
                  icon={faSmog}
                  label={"Smoke"}
                  onClick={() => {
                    setEffect("smoke");
                  }}
                />
              </div>
            </OlAccordion>
          </div>
        )}

        <UnitSpawnMenu
          visible={blueprint !== null}
          compact={false}
          blueprint={blueprint}
          starredSpawns={starredSpawns}
          coalition={commandModeOptions.commandMode !== GAME_MASTER ? (commandModeOptions.commandMode === BLUE_COMMANDER ? "blue" : "red") : undefined}
        />

        <EffectSpawnMenu visible={effect !== null} compact={false} effect={effect} />
      </>
    </Menu>
  );
}