package market.guess.ui.desktop.controllers;

import java.math.BigDecimal;
import java.util.List;
import java.util.function.BiConsumer;
import java.util.function.Consumer;
import javafx.fxml.FXML;
import javafx.scene.control.Button;
import javafx.scene.control.CheckBox;
import javafx.scene.control.ComboBox;
import javafx.scene.control.Label;
import javafx.scene.control.TextArea;
import javafx.scene.control.TextField;
import market.guess.model.event.CommissionTiming;
import market.guess.model.event.CreateEventRequest;
import market.guess.model.event.MechanismType;
import market.guess.ui.desktop.util.Format;
import market.guess.ui.desktop.util.Views;

public class CreateEventDialogController {
  private Runnable onCancel;
  private Consumer<CreateEventRequest> onCreateRequest;
  private BiConsumer<String, MechanismType> onCreate;
  private MechanismType selectedType = MechanismType.LMSR;

  @FXML private TextField nameField;
  @FXML private TextArea descArea;
  @FXML private Button lmsrBtn;
  @FXML private Button orderBookBtn;
  @FXML private ComboBox<String> feeCollectionCombo;
  @FXML private TextField feePercentField;
  @FXML private Label paramLabel;
  @FXML private TextField paramField;
  @FXML private TextField opt1Field;
  @FXML private TextField opt2Field;
  @FXML private CheckBox mintingCheckBox;
  @FXML private Label infoNoteLabel;

  @FXML
  private void initialize() {
    feeCollectionCombo.getItems().setAll("On purchase", "On close");
    feeCollectionCombo.setValue("On purchase");
    updateTypeSelection();
  }

  public void setOnCancel(Runnable onCancel) {
    this.onCancel = onCancel;
  }

  public void setOnCreate(Consumer<CreateEventRequest> onCreateRequest) {
    this.onCreateRequest = onCreateRequest;
  }

  public void setOnCreate(BiConsumer<String, MechanismType> onCreate) {
    this.onCreate = onCreate;
  }

  public void reset() {
    nameField.setText("Will the summit happen before Q4?");
    descArea.setText(
        "Resolves YES if a joint summit is publicly confirmed and held before October 1st.");
    feeCollectionCombo.setValue("On purchase");
    feePercentField.setText("5");
    opt1Field.setText("YES");
    opt2Field.setText("NO");
    selectedType = MechanismType.LMSR;
    updateTypeSelection();
  }

  private void updateTypeSelection() {
    Views.setSelected(lmsrBtn, selectedType == MechanismType.LMSR);
    Views.setSelected(orderBookBtn, selectedType == MechanismType.ORDER_BOOK);

    boolean isLmsr = selectedType == MechanismType.LMSR;
    paramLabel.setText(isLmsr ? "Liquidity b (integer)" : "Base value d ($)");
    paramField.setText(isLmsr ? "100" : "1.00");
    mintingCheckBox.setVisible(!isLmsr);

    String infoText =
        isLmsr
            ? "Opening this event will move "
                + Format.money(BigDecimal.valueOf(100 * Math.log(2)))
                + " of subsidy from your account into the contract account (b  ln 2)."
            : "Opening this event will buy the initial share inventory from your account into the"
                + " contract account.";
    infoNoteLabel.setText(infoText);
  }

  @FXML
  private void handleSelectLmsr() {
    selectedType = MechanismType.LMSR;
    updateTypeSelection();
  }

  @FXML
  private void handleSelectOrderBook() {
    selectedType = MechanismType.ORDER_BOOK;
    updateTypeSelection();
  }

  @FXML
  private void handleCancel() {
    if (onCancel != null) {
      onCancel.run();
    }
  }

  @FXML
  private void handleCreate() {
    String name = nameField.getText() != null ? nameField.getText().trim() : "";
    String desc = descArea.getText() != null ? descArea.getText().trim() : "";
    MechanismType type = selectedType;
    CommissionTiming timing = "On close".equalsIgnoreCase(feeCollectionCombo.getValue())
        ? CommissionTiming.ON_CLOSE
        : CommissionTiming.ON_PURCHASE;

    int fee = 5;
    try {
      fee = Integer.parseInt(feePercentField.getText().trim());
      if (fee < 0) fee = 0;
      if (fee > 90) fee = 90;
    } catch (Exception ignored) {
    }

    Integer b = null;
    BigDecimal d = null;
    if (type == MechanismType.LMSR) {
      try {
        b = Integer.parseInt(paramField.getText().trim());
      } catch (Exception ignored) {
        b = 100;
      }
    } else {
      try {
        d = new BigDecimal(paramField.getText().trim());
      } catch (Exception ignored) {
        d = BigDecimal.ONE;
      }
    }

    String opt1 = opt1Field.getText() != null && !opt1Field.getText().isBlank() ? opt1Field.getText().trim() : "YES";
    String opt2 = opt2Field.getText() != null && !opt2Field.getText().isBlank() ? opt2Field.getText().trim() : "NO";
    boolean minting = mintingCheckBox.isSelected();

    var request = new CreateEventRequest(
        name,
        desc,
        type,
        fee,
        timing,
        null,
        b,
        d,
        List.of(opt1, opt2),
        minting);

    if (onCreateRequest != null) {
      onCreateRequest.accept(request);
    } else if (onCreate != null) {
      onCreate.accept(name, type);
    }
  }
}