RegexFromString.razor

@using System.Text
@using Fare
@inject IJSRuntime JSRuntime

<div class="container">
    <div class="row">
        <div class="col">

            <label class="label-control">Regular Expression:</label>
            <div class="input-group">
                <input type="regularExpression" id="regularExpression" name="regularExpression" class="form-control" @bind="RegularExpression">
            </div>
            
        </div>

        <div class="col">
            
            <label class="label-control">Count:</label>
            <div class="input-group">
                <input type="count" id="count" name="count" class="form-control" @bind="Count">
            </div>
            
        </div>
        
    </div>

    <div class="row">
        <div class="col">
            <button id="Generate" name="Generate" @onclick="Generate" class="btn btn-success float-right">Generate</button>
        </div>
    </div>

    <div class="row">
        <div class="col">
            <div class="input-group">
                <textarea id="output" class="form-control" rows="@Count" @bind="Output"></textarea>
                <span class="input-group-btn">
                    <button id="btnCopy" name="btnCopy" class="btn btn-info float-right" @onclick="Copy"><i class="far fa-copy"></i></button>
                </span>
            </div>
        </div>
    </div>
    
    <div class="row">
        <div class="col">
            <p>Inspired from <a href="https://onlinestringtools.com/generate-string-from-regex" target="_blank">String from Regex Generator</a></p>
        </div>
    </div>
    
</div>

@code
{
    [Parameter]
    public string Output { get; set; }
    
    string RegularExpression;
    int Count;
    
    protected override void OnInitialized()
    {
        RegularExpression = @"\d{1,5}";
        Count = 5;
        Output = "";
    }
    
    private void Generate()
    {
        StringBuilder builder = new StringBuilder();
        for (int i = 0; i < Count; i++)
        {
            var xeger = new Xeger(RegularExpression);
            var random = xeger.Generate();
            
            builder.Append(random + System.Environment.NewLine);
        }

        Output = builder.ToString().Trim();
    }
    
    async Task Copy()
    {
        await JSRuntime.InvokeVoidAsync("navigator.clipboard.writeText", Output);
    }
}