using DataModel.Database;
using DataModel.Database.Common;
using Microsoft.Extensions.DependencyInjection;
using Processor;
using UI_WinForms.Dialogs;

namespace UI_WinForms.Components;

public partial class TextElements : UserControl
{
    private readonly DataContext db;
    
    private Section? currentSection;
    
    public TextElements()
    {
        this.InitializeComponent();
        
        // Check if we are in the designer:
        if(Program.SERVICE_PROVIDER is null)
            return;
        
        // Get the DI context from the main form:
        this.db = Program.SERVICE_PROVIDER.GetService<DataContext>()!;
        
        // Dispose of the context when the control is disposed:
        this.Disposed += (_, _) => this.db.Dispose();
        
        // When the section is changed, update this component:
        AppEvents.WhenSectionChanged += async (sender, section) =>
        {
            this.currentSection = section;
            this.buttonAdd.Enabled = this.currentSection is not null;
            
            // Update the path:
            if (this.currentSection is null)
                return;
            
            this.labelSectionPath.Text = await SectionProcessor.GetSectionPath(this.db, this.currentSection.DataKey);
            this.LoadTextElements();
        };
    }
    
    // Loads all the text elements for the current section.
    private async void LoadTextElements()
    {
        if (this.currentSection is null)
            return;
        
        // Load the text elements:
        var textElements = await TextElementProcessor.GetTextElements(this.db, this.currentSection);
        
        // Update the list:
        this.listTextElements.Items.Clear();
        await foreach (var textElement in textElements)
        {
            var item = new ListViewItem(textElement.Name)
            {
                Tag = textElement.Code,
            };
            
            this.listTextElements.Items.Add(item);
        }
    }
    
    private async void buttonAdd_Click(object sender, EventArgs e)
    {
        if(this.DesignMode)
            return;
        
        var result = InputDialog.Show(new InputDialog.Options(
            Message: "Please type the desired text element's name.",
            Title: "Add a text element",
            Placeholder: "My text element",
            ShowQuestionCheckbox: false
        ));
        
        if(result.DialogResult == DialogResult.Cancel)
            return;
        
        // Add the text element to the database into the current section:
        var newTextElement = await TextElementProcessor.AddTextElement(this.db, this.currentSection?.DataKey, result.Text);
        newTextElement.ProcessError();
        
        if(!newTextElement.Successful)
            return;
        
        // Add the text element to the list:
        var item = new ListViewItem(newTextElement.Result!.Name)
        {
            Tag = newTextElement.Result.Code,
        };

        this.listTextElements.Items.Add(item);
    }

    private void buttonRemove_Click(object sender, EventArgs e)
    {

    }
    
    private void buttonRename_Click(object sender, EventArgs e)
    {

    }
}