using System.Collections;
using System.Collections.Generic;
using UnityEngine;

using TMPro;

public class Tutorial : MonoBehaviour {
	TMPro.TMP_Text tutorialText;

	public UnityEngine.UI.Button escapeButton;

	void SetText(string label, string fallbackText = "") {
		var localized = Localization.GetString(label);
		if (localized == "E-R-R-O-R") localized = fallbackText;
		Debug.LogFormat("Setting tutorial text to {0}", localized);
		tutorialText.text = localized;
	}

	public GameBoard board;

	void Drop() => board.board = board.DropNow(board.board);
	WaitUntil UntilDrop() => new WaitUntil(() => board.delayState.Equals(GameBoard.DelayState.None));

	// Start is called before the first frame update
	void Start() {
		board.Setup();
		board.StartGame();
		board.AIEnabled = true; // Disable player input on the board
		tutorialText = GetComponent<TMP_Text>();

		escapeButton.onClick.AddListener(() => Application.LoadLevel(0));

		StartCoroutine(TutorialRoutine());
	}

	IEnumerator TutorialRoutine() {
		board.board = BoardStateExtension.Initialize();
		board.nextPair = (new TileInfo(TileKind.Block, TileColor.Yellow), new TileInfo(TileKind.Block, TileColor.Yellow));
		board.currentPair = (new TileInfo(TileKind.Block, TileColor.Yellow), new TileInfo(TileKind.Block, TileColor.Yellow));

		SetText("TUTORIAL_INTRO", "Welcome to Touhou: Luminous Strike!");
		yield return new WaitForSeconds(2.5f);
		activePatchyNumber = 2;
		SetText("TUTORIAL_INTRO1", "The goal of the game is to place and light lanterns on your board.");

		var bs = board.board;

		// Fill the bottom three rows with blue lanterns
		for (int i = 0; i < 3; i++) {
			yield return PlayerMove((0, 0));
			Drop();
			board.nextPair = (new TileInfo(TileKind.Block, TileColor.Yellow), new TileInfo(TileKind.Block, TileColor.Yellow));
			yield return PlayerMove((2, 0));
			yield return UntilDrop();
			Drop();
			board.nextPair = (new TileInfo(TileKind.Block, TileColor.Yellow), new TileInfo(TileKind.Block, TileColor.Yellow));
			yield return PlayerMove((4, 0));
			yield return UntilDrop();
			Drop();
			board.nextPair = (new TileInfo(TileKind.Block, TileColor.Yellow), new TileInfo(TileKind.Block, TileColor.Yellow));
		}

		board.currentPair = (new TileInfo(TileKind.Block, TileColor.Yellow), new TileInfo(TileKind.Activator, TileColor.Yellow));
		SetText("TUTORIAL_INTRO2", "Attack by igniting your lanterns with a flame, the more you ignite, the bigger the attack");
		yield return PlayerMove((3, 0));
		yield return new WaitForSeconds(2f);
		board.nextPair = (new TileInfo(TileKind.Activator, TileColor.Yellow), new TileInfo(TileKind.Activator, TileColor.Blue));
		Drop();
		activePatchyNumber = 3;
		board.nextPair = (new TileInfo(TileKind.Activator, TileColor.Red), new TileInfo(TileKind.Activator, TileColor.Green));
		yield return UntilDrop();

		SetText("TUTORIAL_COLORS", "But of course, lanterns come in a variety of colors");
		activePatchyNumber = 1;
		for (int i = 0; i < GameBoard.COLUMN; ++i) {
			bs[i].AddRange(new[] {
				new TileInfo(TileKind.Block, TileColor.Red),
				new TileInfo(TileKind.Block, TileColor.Blue),
				new TileInfo(TileKind.Block, TileColor.Yellow),
				new TileInfo(TileKind.Block, TileColor.Green)
			});

			yield return new WaitForSeconds(0.5f);
		}
		yield return new WaitForSeconds(1.5f);
		SetText("TUTORIAL_COLORS2", "Only flames of same color can ignite lanterns. If you use this carefully you can create combos!");
		yield return PlayerMove((2, 0));
		yield return new WaitForSeconds(1f);
		activePatchyNumber = 1;
		Drop();
		board.nextPair = (new TileInfo(TileKind.Block, TileColor.Yellow), new TileInfo(TileKind.Block, TileColor.Yellow));
		yield return PlayerMove((4, 0));
		yield return new WaitForSeconds(1f);
		activePatchyNumber = 2;
		Drop();
		board.nextPair = (new TileInfo(TileKind.Block, TileColor.Yellow), new TileInfo(TileKind.Activator, TileColor.Yellow));
		yield return UntilDrop();
		//board.nextPair = (new TileInfo(TileKind.Block, TileColor.Yellow), new TileInfo(TileKind.Block, TileColor.Yellow));
		SetText("TUTORIAL_COLORS3", "As you can see, combos can be quite big!");
		for (int i = 0; i < GameBoard.COLUMN; ++i) {
			bs[i].AddRange(new[] {
				new TileInfo(TileKind.Block, TileColor.Yellow,0),
				new TileInfo(TileKind.Block, TileColor.Yellow,0),
				new TileInfo(TileKind.Trash,TileColor.Yellow,5)
			});

			yield return new WaitForSeconds(0.5f);
		}
		activePatchyNumber = 3;
		SetText("TUTORIAL_TRASH", "When the other player ingites lanterns, you will be bombarded with sealed lanterns");
		yield return new WaitForSeconds(2f);
		Drop();
		board.nextPair = (new TileInfo(TileKind.Block, TileColor.Yellow), new TileInfo(TileKind.Block, TileColor.Yellow));
		yield return PlayerMove((4, 0));
		yield return UntilDrop();
		yield return new WaitForSeconds(2f);
		activePatchyNumber = 1;
		SetText("TUTORIAL_TRASH2", "Sealed lanterns can't be ignited, but after enough moves, the seal breaks.");
		for (int i = 0; i < 4; ++i) {
			Drop();
			board.nextPair = (new TileInfo(TileKind.Block, TileColor.Yellow), new TileInfo(TileKind.Activator, TileColor.Yellow));
			yield return PlayerMove((i, 0));
			yield return UntilDrop();
		}
		board.nextPair = (new TileInfo(TileKind.Block, TileColor.Yellow), new TileInfo(TileKind.Block, TileColor.Yellow));
		board.currentPair = (new TileInfo(TileKind.Activator, TileColor.Red), new TileInfo(TileKind.Special, TileColor.Yellow));
		yield return new WaitForSeconds(3f);
		activePatchyNumber = 2;
		SetText("TUTORIAL_TRASH3", "The rare rainbow-flame however ignites all laterns of the provided color, even if they are sealed");
		for (int i = 0; i < GameBoard.COLUMN; ++i) {
			bs[i].AddRange(new[] {
				new TileInfo(TileKind.Block, TileColor.Yellow,0),
				new TileInfo(TileKind.Block, TileColor.Red,0),
				new TileInfo(TileKind.Trash,TileColor.Yellow,5)
			});

			yield return new WaitForSeconds(0.5f);
		}
		yield return PlayerMove((0, 0));
		Drop();
		board.nextPair = (new TileInfo(TileKind.Block, TileColor.Yellow), new TileInfo(TileKind.Block, TileColor.Yellow));
		board.currentPair = (new TileInfo(TileKind.Block, TileColor.Red), new TileInfo(TileKind.Block, TileColor.Red));
		yield return UntilDrop();
		yield return new WaitForSeconds(2f);
		SetText("TUTORIAL_EXTRA", "Lanterns always come in pairs, but you can swap with the next pair by pressing [Z]");
		activePatchyNumber = 3;
		for (int i = 0; i < 5; ++i) {
			board.SwapTiles();
			yield return new WaitForSeconds(1f);
		}
		board.nextPair = (new TileInfo(TileKind.Block, TileColor.Yellow), new TileInfo(TileKind.Block, TileColor.Red));
		board.currentPair = (new TileInfo(TileKind.Block, TileColor.Red), new TileInfo(TileKind.Block, TileColor.Yellow));
		activePatchyNumber = 1;
		SetText("TUTORIAL_EXTRA2", "Even more useful, you can rotate your lanterns with UP/DOWN");
		yield return PlayerMove((3, 0));
		for (int i = 0; i < 12; ++i) {
			board.playerRotation = i % 4;
			yield return new WaitForSeconds(0.5f);
		}

		activePatchyNumber = 3;
		SetText("TUTORIAL_EXTRA3", "Finally, be cautious, as if your board fills up, it will collapse and you will lose.");
		for (int i = 0; i < 12; ++i) {
			yield return new WaitForSeconds(0.15f);
			for (int j = 0; j < GameBoard.COLUMN; ++j) {
				yield return new WaitForSeconds(0.05f);
				bs[j].Add(TileInfo.CreateRandomTrashTile());
			}
		}

		board.Clear();

		yield return new WaitForSeconds(5f);
		activePatchyNumber = 1;
		SetText("TUTORIAL_EXTRA4", "That's all I have to share with you, please enjoy playing Luminous Strike");
		yield return new WaitForSeconds(5f);
		Application.LoadLevel(0);
	}

	IEnumerator PlayerMove((int c, int r) goal, float actionTime = 0.2f) {
		board.playerRotation = goal.r; // instantly rotate we're lazy here

		while (goal.c < board.dropColumn) {
			board.dropColumn -= 1;
			yield return new WaitForSeconds(actionTime);
		}
		while (goal.c > board.dropColumn) {
			board.dropColumn += 1;
			yield return new WaitForSeconds(actionTime);
		}
	}

	public int activePatchyNumber = 1;
	public GameObject Patchy1, Patchy2, Pacthy3;

	// Update is called once per frame
	void Update() {
		if (Input.GetKeyDown(KeyCode.Escape)) {
			Application.LoadLevel(0);
		}

		Patchy1.SetActive(activePatchyNumber == 1);
		Patchy2.SetActive(activePatchyNumber == 2);
		Pacthy3.SetActive(activePatchyNumber == 3);
	}
}