using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using UnityEngine;
using UnityEngine.UI;
public static class PanelFactory 
{
    // panel basics config
    private static Vector3 DialoguePanelPosition = new Vector3(0, 75, 0);
    private static Vector2 DialoguePanelSize = new Vector2(800, 665);
    private static Vector3 DialoguePanelScale = new Vector3(0.95f, 0.2f, 1);

    // buttons config
    private static Vector3 BaseButtonPosition = new Vector3(110, 0, 0);
    private static Vector2 BaseButtonSize = new Vector2(150, 80);
    private static Vector3 BaseButtonScale = new Vector3(1, 1, 1);

    private static Vector3 AcceptButtonPosition = new Vector3(90, 270, 0);
    private static Vector2 AcceptButtonSize = new Vector2(100, 80);
    private static Vector3 AcceptButtonScale = new Vector3(1, 1, 1);

    private static Vector3 RejectButtonPosition = new Vector3(105, 155, 0);
    private static Vector2 RejectButtonSize = new Vector2(130, 80);
    private static Vector3 RejectButtonScale = new Vector3(1, 1, 1);

    const int BOTTOM_MARGIN = 15;

    public static Panel BasePanel(string _header, DialogueModel _dialogueModel)
    {
        Panel panel;

        // decide whic panel use later in the code
        if (_dialogueModel.Buttons.ToArray().Length == 0)
            panel = PanelFactory.TextPanel(_header, _dialogueModel.Sentence);
        else
        {

            panel = new QuestionPanel();


            panel.Header = _header;
            panel.Content = _dialogueModel.Sentence;


            panel.Scale = DialoguePanelScale;
            panel.Size = new Vector2(DialoguePanelSize.x, 480 + ((BaseButtonSize.y + 30) * _dialogueModel.Buttons.ToArray().Length));

            // y position: panel.Height/10 + margin (15)
            panel.Position = new Vector2(DialoguePanelPosition.x, panel.Size.y / 10 + BOTTOM_MARGIN);


            _dialogueModel.Buttons.Reverse();
            
            foreach (var buttonModelWithIndex in _dialogueModel.Buttons.Select((value, index) => new { value, index }))
            {
               ((QuestionPanel)panel).Answers.Add(
                    ButtonPanel(
                        new Vector2(BaseButtonPosition.x, BOTTOM_MARGIN + 40 + (30 + BaseButtonSize.y) * (buttonModelWithIndex.index + 1)),
                        BaseButtonSize,
                        BaseButtonScale,
                        buttonModelWithIndex.value
                        )
                    );
            }

        }

        return panel;
    }

    public static Panel TextPanel(string _header, string _content)  // panel wit "continue" button
    {
        Panel panel = new Panel();

        panel.Header = _header;
        panel.Content = _content;

        panel.Scale = DialoguePanelScale;
        panel.Size = DialoguePanelSize;
        panel.Position = new Vector2(DialoguePanelPosition.x, panel.Size.y / 10 + BOTTOM_MARGIN);


        return panel;
    }

    public static Panel QuestionPanel(string _header, string _content)
    {
        QuestionPanel panel = new QuestionPanel();

        // set buttons
        panel.Answers.Add(new ButtonPanelModel(PanelButtonEnum.Accept, AcceptButtonPosition, AcceptButtonSize, AcceptButtonScale));
        panel.Answers.Add(new ButtonPanelModel(PanelButtonEnum.Reject, RejectButtonPosition, RejectButtonSize, RejectButtonScale));

        panel.Header = _header;
        panel.Content = _content;

        panel.Position = DialoguePanelPosition;
        panel.Size = DialoguePanelSize;
        panel.Scale = DialoguePanelScale;

        return panel;
    }

    // TODO some panel with more than two answres
    public static Panel QuestionPanel(string _header, DialogueModel _dialogueModel )
    {
        QuestionPanel panel = new QuestionPanel();

        // TODO to C-H-A-N-G-E ! ! !
        panel.Answers.Add(new ButtonPanelModel(PanelButtonEnum.Accept, AcceptButtonPosition, AcceptButtonSize, AcceptButtonScale));
        panel.Answers.Add(new ButtonPanelModel(PanelButtonEnum.Reject, RejectButtonPosition, RejectButtonSize, RejectButtonScale));

        panel.Header = _header;
        panel.Content = _dialogueModel.Sentence;

        panel.Position = DialoguePanelPosition;
        panel.Size = DialoguePanelSize;
        panel.Scale = DialoguePanelScale;

        return panel;
    }

    public static ButtonPanelModel ButtonPanel(Vector3 _position, Vector2 _size, Vector3 _scale, PanelButtonStepModel _buttonData)
    {
        return new ButtonPanelModel(_position, _size, _scale, _buttonData);
    }
}