import type BattleScene from "#app/battle-scene";
import { getPokemonSpecies } from "#app/data/pokemon-species";
import { PlayerPokemon } from "#app/field/pokemon";
import { ModifierTier } from "#app/modifier/modifier-tier";
import type { CustomModifierSettings } from "#app/modifier/modifier-type";
import { ModifierTypeOption, modifierTypes } from "#app/modifier/modifier-type";
import { SelectModifierPhase } from "#app/phases/select-modifier-phase";
import ModifierSelectUiHandler from "#app/ui/modifier-select-ui-handler";
import { Mode } from "#app/ui/ui";
import { shiftCharCodes } from "#app/utils";
import { Abilities } from "#enums/abilities";
import { Button } from "#enums/buttons";
import { Moves } from "#enums/moves";
import { Species } from "#enums/species";
import GameManager from "#test/testUtils/gameManager";
import { initSceneWithoutEncounterPhase } from "#test/testUtils/gameManagerUtils";
import Phaser from "phaser";
import { afterEach, beforeAll, beforeEach, describe, expect, it, vi } from "vitest";

describe("SelectModifierPhase", () => {
  let phaserGame: Phaser.Game;
  let game: GameManager;
  let scene: BattleScene;

  beforeAll(() => {
    phaserGame = new Phaser.Game({
      type: Phaser.HEADLESS,
    });
  });

  beforeEach(() => {
    game = new GameManager(phaserGame);
    scene = game.scene;

    game.override
      .moveset([ Moves.FISSURE, Moves.SPLASH ])
      .ability(Abilities.NO_GUARD)
      .startingLevel(200)
      .enemySpecies(Species.MAGIKARP);
  });

  afterEach(() => {
    game.phaseInterceptor.restoreOg();

    vi.clearAllMocks();
  });

  it("should start a select modifier phase", async () => {
    initSceneWithoutEncounterPhase(scene, [ Species.ABRA, Species.VOLCARONA ]);
    const selectModifierPhase = new SelectModifierPhase();
    scene.pushPhase(selectModifierPhase);
    await game.phaseInterceptor.run(SelectModifierPhase);

    expect(scene.ui.getMode()).to.equal(Mode.MODIFIER_SELECT);
  });

  it("should generate random modifiers", async () => {
    await game.classicMode.startBattle([ Species.ABRA, Species.VOLCARONA ]);
    game.move.select(Moves.FISSURE);
    await game.phaseInterceptor.to("SelectModifierPhase");

    expect(scene.ui.getMode()).to.equal(Mode.MODIFIER_SELECT);
    const modifierSelectHandler = scene.ui.handlers.find(h => h instanceof ModifierSelectUiHandler) as ModifierSelectUiHandler;
    expect(modifierSelectHandler.options.length).toEqual(3);
  });

  it("should modify reroll cost", async () => {
    initSceneWithoutEncounterPhase(scene, [ Species.ABRA, Species.VOLCARONA ]);
    const options = [
      new ModifierTypeOption(modifierTypes.POTION(), 0, 100),
      new ModifierTypeOption(modifierTypes.ETHER(), 0, 400),
      new ModifierTypeOption(modifierTypes.REVIVE(), 0, 1000)
    ];

    const selectModifierPhase1 = new SelectModifierPhase(0, undefined, { guaranteedModifierTypeOptions: options });
    const selectModifierPhase2 = new SelectModifierPhase(0, undefined, { guaranteedModifierTypeOptions: options, rerollMultiplier: 2 });

    const cost1 = selectModifierPhase1.getRerollCost(false);
    const cost2 = selectModifierPhase2.getRerollCost(false);
    expect(cost2).toEqual(cost1 * 2);
  });

  it.todo("should generate random modifiers from reroll", async () => {
    await game.classicMode.startBattle([ Species.ABRA, Species.VOLCARONA ]);
    scene.money = 1000000;
    scene.shopCursorTarget = 0;

    game.move.select(Moves.FISSURE);
    await game.phaseInterceptor.to("SelectModifierPhase");

    // TODO: nagivate the ui to reroll somehow
    //const smphase = scene.getCurrentPhase() as SelectModifierPhase;
    expect(scene.ui.getMode()).to.equal(Mode.MODIFIER_SELECT);
    const modifierSelectHandler = scene.ui.handlers.find(h => h instanceof ModifierSelectUiHandler) as ModifierSelectUiHandler;
    expect(modifierSelectHandler.options.length).toEqual(3);

    modifierSelectHandler.processInput(Button.ACTION);

    expect(scene.money).toBe(1000000 - 250);
    expect(scene.ui.getMode()).to.equal(Mode.MODIFIER_SELECT);
    expect(modifierSelectHandler.options.length).toEqual(3);
  });

  it.todo("should generate random modifiers of same tier for reroll with reroll lock", async () => {
    game.override.startingModifier([{ name: "LOCK_CAPSULE" }]);
    await game.classicMode.startBattle([ Species.ABRA, Species.VOLCARONA ]);
    scene.money = 1000000;
    // Just use fully random seed for this test
    vi.spyOn(scene, "resetSeed").mockImplementation(() => {
      scene.waveSeed = shiftCharCodes(scene.seed, 5);
      Phaser.Math.RND.sow([ scene.waveSeed ]);
      console.log("Wave Seed:", scene.waveSeed, 5);
      scene.rngCounter = 0;
    });

    game.move.select(Moves.FISSURE);
    await game.phaseInterceptor.to("SelectModifierPhase");

    expect(scene.ui.getMode()).to.equal(Mode.MODIFIER_SELECT);
    const modifierSelectHandler = scene.ui.handlers.find(h => h instanceof ModifierSelectUiHandler) as ModifierSelectUiHandler;
    expect(modifierSelectHandler.options.length).toEqual(3);
    const firstRollTiers: ModifierTier[] = modifierSelectHandler.options.map(o => o.modifierTypeOption.type.tier);

    // TODO: nagivate ui to reroll with lock capsule enabled

    expect(scene.ui.getMode()).to.equal(Mode.MODIFIER_SELECT);
    expect(modifierSelectHandler.options.length).toEqual(3);
    // Reroll with lock can still upgrade
    expect(modifierSelectHandler.options[0].modifierTypeOption.type.tier - modifierSelectHandler.options[0].modifierTypeOption.upgradeCount).toEqual(firstRollTiers[0]);
    expect(modifierSelectHandler.options[1].modifierTypeOption.type.tier - modifierSelectHandler.options[1].modifierTypeOption.upgradeCount).toEqual(firstRollTiers[1]);
    expect(modifierSelectHandler.options[2].modifierTypeOption.type.tier - modifierSelectHandler.options[2].modifierTypeOption.upgradeCount).toEqual(firstRollTiers[2]);
  });

  it("should generate custom modifiers", async () => {
    await game.classicMode.startBattle([ Species.ABRA, Species.VOLCARONA ]);
    scene.money = 1000000;
    const customModifiers: CustomModifierSettings = {
      guaranteedModifierTypeFuncs: [ modifierTypes.MEMORY_MUSHROOM, modifierTypes.TM_ULTRA, modifierTypes.LEFTOVERS, modifierTypes.AMULET_COIN, modifierTypes.GOLDEN_PUNCH ]
    };
    const selectModifierPhase = new SelectModifierPhase(0, undefined, customModifiers);
    scene.unshiftPhase(selectModifierPhase);
    game.move.select(Moves.SPLASH);
    await game.phaseInterceptor.to("SelectModifierPhase");

    expect(scene.ui.getMode()).to.equal(Mode.MODIFIER_SELECT);
    const modifierSelectHandler = scene.ui.handlers.find(h => h instanceof ModifierSelectUiHandler) as ModifierSelectUiHandler;
    expect(modifierSelectHandler.options.length).toEqual(5);
    expect(modifierSelectHandler.options[0].modifierTypeOption.type.id).toEqual("MEMORY_MUSHROOM");
    expect(modifierSelectHandler.options[1].modifierTypeOption.type.id).toEqual("TM_ULTRA");
    expect(modifierSelectHandler.options[2].modifierTypeOption.type.id).toEqual("LEFTOVERS");
    expect(modifierSelectHandler.options[3].modifierTypeOption.type.id).toEqual("AMULET_COIN");
    expect(modifierSelectHandler.options[4].modifierTypeOption.type.id).toEqual("GOLDEN_PUNCH");
  });

  it("should generate custom modifier tiers that can upgrade from luck", async () => {
    await game.classicMode.startBattle([ Species.ABRA, Species.VOLCARONA ]);
    scene.money = 1000000;
    const customModifiers: CustomModifierSettings = {
      guaranteedModifierTiers: [ ModifierTier.COMMON, ModifierTier.GREAT, ModifierTier.ULTRA, ModifierTier.ROGUE, ModifierTier.MASTER ]
    };
    const pokemon = new PlayerPokemon(getPokemonSpecies(Species.BULBASAUR), 10, undefined, 0, undefined, true, 2);

    // Fill party with max shinies
    while (scene.getPlayerParty().length > 0) {
      scene.getPlayerParty().pop();
    }
    scene.getPlayerParty().push(pokemon, pokemon, pokemon, pokemon, pokemon, pokemon);

    const selectModifierPhase = new SelectModifierPhase(0, undefined, customModifiers);
    scene.unshiftPhase(selectModifierPhase);
    game.move.select(Moves.SPLASH);
    await game.phaseInterceptor.to("SelectModifierPhase");

    expect(scene.ui.getMode()).to.equal(Mode.MODIFIER_SELECT);
    const modifierSelectHandler = scene.ui.handlers.find(h => h instanceof ModifierSelectUiHandler) as ModifierSelectUiHandler;
    expect(modifierSelectHandler.options.length).toEqual(5);
    expect(modifierSelectHandler.options[0].modifierTypeOption.type.tier - modifierSelectHandler.options[0].modifierTypeOption.upgradeCount).toEqual(ModifierTier.COMMON);
    expect(modifierSelectHandler.options[1].modifierTypeOption.type.tier - modifierSelectHandler.options[1].modifierTypeOption.upgradeCount).toEqual(ModifierTier.GREAT);
    expect(modifierSelectHandler.options[2].modifierTypeOption.type.tier - modifierSelectHandler.options[2].modifierTypeOption.upgradeCount).toEqual(ModifierTier.ULTRA);
    expect(modifierSelectHandler.options[3].modifierTypeOption.type.tier - modifierSelectHandler.options[3].modifierTypeOption.upgradeCount).toEqual(ModifierTier.ROGUE);
    expect(modifierSelectHandler.options[4].modifierTypeOption.type.tier - modifierSelectHandler.options[4].modifierTypeOption.upgradeCount).toEqual(ModifierTier.MASTER);
  });

  it("should generate custom modifiers and modifier tiers together", async () => {
    await game.classicMode.startBattle([ Species.ABRA, Species.VOLCARONA ]);
    scene.money = 1000000;
    const customModifiers: CustomModifierSettings = {
      guaranteedModifierTypeFuncs: [ modifierTypes.MEMORY_MUSHROOM, modifierTypes.TM_COMMON ],
      guaranteedModifierTiers: [ ModifierTier.MASTER, ModifierTier.MASTER ]
    };
    const selectModifierPhase = new SelectModifierPhase(0, undefined, customModifiers);
    scene.unshiftPhase(selectModifierPhase);
    game.move.select(Moves.SPLASH);
    await game.phaseInterceptor.run(SelectModifierPhase);


    expect(scene.ui.getMode()).to.equal(Mode.MODIFIER_SELECT);
    const modifierSelectHandler = scene.ui.handlers.find(h => h instanceof ModifierSelectUiHandler) as ModifierSelectUiHandler;
    expect(modifierSelectHandler.options.length).toEqual(4);
    expect(modifierSelectHandler.options[0].modifierTypeOption.type.id).toEqual("MEMORY_MUSHROOM");
    expect(modifierSelectHandler.options[1].modifierTypeOption.type.id).toEqual("TM_COMMON");
    expect(modifierSelectHandler.options[2].modifierTypeOption.type.tier).toEqual(ModifierTier.MASTER);
    expect(modifierSelectHandler.options[3].modifierTypeOption.type.tier).toEqual(ModifierTier.MASTER);
  });

  it("should fill remaining modifiers if fillRemaining is true with custom modifiers", async () => {
    await game.classicMode.startBattle([ Species.ABRA, Species.VOLCARONA ]);
    scene.money = 1000000;
    const customModifiers: CustomModifierSettings = {
      guaranteedModifierTypeFuncs: [ modifierTypes.MEMORY_MUSHROOM ],
      guaranteedModifierTiers: [ ModifierTier.MASTER ],
      fillRemaining: true
    };
    const selectModifierPhase = new SelectModifierPhase(0, undefined, customModifiers);
    scene.unshiftPhase(selectModifierPhase);
    game.move.select(Moves.SPLASH);
    await game.phaseInterceptor.run(SelectModifierPhase);


    expect(scene.ui.getMode()).to.equal(Mode.MODIFIER_SELECT);
    const modifierSelectHandler = scene.ui.handlers.find(h => h instanceof ModifierSelectUiHandler) as ModifierSelectUiHandler;
    expect(modifierSelectHandler.options.length).toEqual(3);
    expect(modifierSelectHandler.options[0].modifierTypeOption.type.id).toEqual("MEMORY_MUSHROOM");
    expect(modifierSelectHandler.options[1].modifierTypeOption.type.tier).toEqual(ModifierTier.MASTER);
  });
});