@page "/"
@using ShiftScheduler.Client.Components

<div class="top-nav-buttons">
    <div class="month-selection">
        <button class="btn month-btn @(_isCurrentMonth ? "selected" : "")" @onclick="SelectCurrentMonth" disabled="@_isLoadingInitial">@MonthAndYear.CurrentMonthName</button>
        <button class="btn month-btn @(_isCurrentMonth ? "" : "selected")" @onclick="SelectNextMonth" disabled="@_isLoadingInitial">@MonthAndYear.NextMonthName</button>
    </div>
    <div class="action-buttons">
        <button class="btn export-btn" @onclick="ExportToIcs" disabled="@(_isLoadingInitial || _isSyncing)"><span class="oi oi-calendar" aria-hidden="true"></span> Export to ICS</button>
        <button class="btn export-btn" @onclick="SyncToGoogleCalendar" disabled="@(_isLoadingInitial || _isSyncing)"><span class="oi oi-cloud-upload" aria-hidden="true"></span> Sync to Google Calendar</button>
        <button class="btn export-btn" @onclick="ExportToPdf" disabled="@(_isLoadingInitial || _isSyncing)"><span class="oi oi-document" aria-hidden="true"></span>Export to PDF</button>
        <button class="btn config-btn" @onclick="ShowConfiguration" disabled="@(_isLoadingInitial || _isSyncing)"><span class="oi oi-cog" aria-hidden="true"></span> Configuration</button>
    </div>
</div>

<h3>Shift Scheduler - @SelectedDate.Title</h3>

@if (!string.IsNullOrEmpty(_errorMessage))
{
    <div class="alert alert-danger" role="alert">
        @_errorMessage
        <button type="button" class="btn-close" @onclick="() => _errorMessage = string.Empty"></button>
    </div>
}

@if (!string.IsNullOrEmpty(_successMessage))
{
    <div class="alert alert-success" role="alert">
        @_successMessage
        <button type="button" class="btn-close" @onclick="() => _successMessage = string.Empty"></button>
    </div>
}

@if (_showCalendarSelector)
{
    <div class="modal fade show" style="display: block; background-color: rgba(0,0,0,0.5);" tabindex="-1">
        <div class="modal-dialog modal-dialog-centered">
            <div class="modal-content">
                <div class="modal-header">
                    <h5 class="modal-title">Select Google Calendar</h5>
                    <button type="button" class="btn-close" @onclick="CloseCalendarSelector"></button>
                </div>
                <div class="modal-body">
                    @if (_availableCalendars.Count == 0)
                    {
                        <div class="d-flex justify-content-center">
                            <div class="spinner-border" role="status">
                                <span class="visually-hidden">Loading calendars...</span>
                            </div>
                        </div>
                        <p class="text-center mt-2">Loading your calendars...</p>
                    }
                    else
                    {
                        <p>Choose which calendar to sync your shifts to:</p>
                        <div class="list-group">
                            @foreach (var calendar in _availableCalendars)
                            {
                                <button type="button" class="list-group-item list-group-item-action" 
                                        @onclick="() => SelectCalendarAndSync(calendar.Id)">
                                    @calendar.Summary
                                </button>
                            }
                        </div>
                    }
                </div>
                <div class="modal-footer">
                    <button type="button" class="btn btn-secondary" @onclick="CloseCalendarSelector">Cancel</button>
                </div>
            </div>
        </div>
    </div>
}

@if (_isLoadingInitial)
{
    <div class="loading-overlay">
        <div class="loading-content">
            <div class="loading-spinner">⏳</div>
            <p>Loading shifts and transport data...</p>
        </div>
    </div>
}
else if (_isSyncing)
{
    <div class="loading-overlay">
        <div class="loading-content">
            <div class="loading-spinner">⏳</div>
            <p>Syncing with google calendar...</p>
        </div>
    </div>
}
else
{

<div class="calendar-container">
    <!-- Desktop week-based layout -->
    <div class="calendar-grid desktop-calendar">
        @foreach (var week in SelectedDate.GetWeeksInMonth())
        {
            @foreach (var day in week.Value)
            {
                <div class="day-cell">
                    <div class="day-header">
                        @day.ToString("dd.MM.yyyy") (@day.ToString("dddd"))
                    </div>
                    <div class="shifts">
                        @foreach (var shift in Shifts)
                        {
                            <div class="tooltip-wrapper">
                                <button class="shift-button @(SelectedSchedule.ContainsKey(day) && SelectedSchedule[day] == shift.Name ? "selected" : "")"
                                        @onclick="() => SelectShift(day, shift.Name)"
                                        disabled="@IsLoadingTransportForDay(day)">
                                    @if (IsLoadingTransportForDay(day) && SelectedSchedule.ContainsKey(day) && SelectedSchedule[day] == shift.Name)
                                    {
                                        <span class="loading-spinner">⏳</span>
                                    }
                                    else
                                    {
                                        @if (shift.IsPngIcon)
                                        {
                                            <img src="icons\@shift.Icon" alt="@shift.Name" style="width: 24px; height: 24px;" />
                                        }
                                        else
                                        {
                                            @shift.Icon
                                        }
                                    }
                                </button>
                                <span class="tooltip">@shift.Name</span>
                            </div>
                        }
                    </div>
                    @if (SelectedSchedule.ContainsKey(day))
                    {
                        if (GetShiftTimes(day).Length > 0)
                        {
                            <div class="shift-times">
                                @GetShiftTimes(day)
                            </div>
                            <div class="transport-info">
                                @GetTransportSummary(day)
                            </div>
                        }
                        else
                        {
                            <div class="shift-times">
                                @SelectedSchedule[day]
                            </div>
                        }
                    }
                </div>
            }
        }
    </div>
    
    <!-- Mobile single-column layout -->
    <div class="calendar-grid mobile-calendar">
        @foreach (var day in SelectedDate.DaysInMonth())
        {
            <div class="day-cell">
                <div class="day-header">
                    @day.ToString("dd.MM.yyyy") (@day.ToString("dddd"))
                </div>
                <div class="shifts">
                    @foreach (var shift in Shifts)
                    {
                        <div class="tooltip-wrapper">
                            <button class="shift-button @(SelectedSchedule.ContainsKey(day) && SelectedSchedule[day] == shift.Name ? "selected" : "")"
                                    @onclick="() => SelectShift(day, shift.Name)"
                                    disabled="@IsLoadingTransportForDay(day)">
                                @if (IsLoadingTransportForDay(day) && SelectedSchedule.ContainsKey(day) && SelectedSchedule[day] == shift.Name)
                                {
                                    <span class="loading-spinner">⏳</span>
                                }
                                else
                                {
                                    @if (shift.IsPngIcon)
                                    {
                                        <img src="icons\@shift.Icon" alt="@shift.Name" style="width: 24px; height: 24px;" />
                                    }
                                    else
                                    {
                                        @shift.Icon
                                    }
                                }
                            </button>
                            <span class="tooltip">@shift.Name</span>
                        </div>
                    }
                </div>
                @if (SelectedSchedule.ContainsKey(day))
                {
                    if (GetShiftTimes(day).Length > 0)
                    {
                        <div class="shift-times">
                            @GetShiftTimes(day)
                        </div>
                        <div class="transport-info">
                            @GetTransportSummary(day)
                        </div>
                    }
                    else
                    {
                        <div class="shift-times">
                            @SelectedSchedule[day]
                        </div>
                    }
                }
            </div>
        }
    </div>
</div>
}

<ConfigurationDialog IsVisible="_showConfigDialog" 
                     OnClose="HideConfiguration" 
                     OnConfigurationChanged="OnConfigurationChanged" />

@code {
    // Helper method to check if a specific day is loading transport data
    private bool IsLoadingTransportForDay(DateTime day)
    {
        return _isLoadingTransportPerDay.GetValueOrDefault(day, false);
    }
}