@extends('layouts.app')

@section('content')
    <div class="container py-4">

        <div class="d-flex justify-content-between align-items-center mb-3">
            <h4 class="mb-0">Edit Tech Event</h4>

            <a href="{{ route('admin.tech-events.index') }}" class="btn btn-secondary btn-sm">
                ← Back
            </a>
        </div>

        <div class="card shadow-sm border-0">
            <div class="card-body">

                @if ($errors->any())
                    <div class="alert alert-danger">
                        <ul class="mb-0">
                            @foreach ($errors->all() as $error)
                                <li>{{ $error }}</li>
                            @endforeach
                        </ul>
                    </div>
                @endif

                <form action="{{ route('admin.tech-events.update', $techEvent->id) }}" method="POST"
                    enctype="multipart/form-data">
                    @csrf
                    @method('PUT')
                    <div class="row g-3">
                        <div class="col-md-6">
                            <label class="form-label">Title *</label>
                            <input type="text" name="title" class="form-control"
                                value="{{ old('title', $techEvent->title) }}" required>
                        </div>
                        <div class="col-md-6">
                            <label for="flag" class="form-label fw-semibold">
                                Update Country Flag
                            </label>

                            <input type="file" name="flag" id="flag" class="form-control" accept="image/*"
                                onchange="previewFlag(event)">

                            <small class="text-muted">
                                Leave empty to keep current flag. JPG/PNG/WEBP • Max 1MB
                            </small>

                            {{-- Preview Area --}}
                            <div class="mt-3">
                                <p class="mb-1 small text-muted">Preview:</p>

                                <img id="flagPreview"
                                    src="{{ $techEvent->flag ? asset('storage/' . $techEvent->flag) : '' }}" width="60"
                                    height="40"
                                    style="object-fit:cover; border-radius:4px; {{ $techEvent->flag ? '' : 'display:none;' }}">
                            </div>

                            @error('flag')
                                <div class="text-danger small mt-1">
                                    {{ $message }}
                                </div>
                            @enderror
                        </div>
                        <div class="col-md-6">
                            <label class="form-label">Label (Category)</label>
                            <input type="text" name="label" class="form-control"
                                value="{{ old('label', $techEvent->label) }}">
                        </div>

                        <div class="col-md-6">
                            <label class="form-label">Location</label>
                            <input type="text" name="location" class="form-control"
                                value="{{ old('location', $techEvent->location) }}">
                        </div>
                        <div class="col-md-6 mb-3">
                            <label>Address</label>
                            <input type="text" name="organizer_address" class="form-control"
                                value="{{ old('organizer_address', $techEvent->organizer_address ?? '') }}">
                        </div>
                        <div class="col-md-3 mb-3">
                            <label>City</label>
                            <input type="text" name="organizer_city" class="form-control"
                                value="{{ old('organizer_city', $techEvent->organizer_city ?? '') }}">
                        </div>
                        <div class="col-md-3 mb-3">
                            <label>Phone Number</label>
                            <input type="text" name="organizer_phone" class="form-control"
                                value="{{ old('organizer_phone', $techEvent->organizer_phone ?? '') }}">
                        </div>
                        <div class="col-md-4 mb-3">
                            <label>WhatsApp Number</label>
                            <input type="text" name="organizer_whatsapp" class="form-control"
                                value="{{ old('organizer_whatsapp', $techEvent->organizer_whatsapp ?? '') }}">
                            <small class="text-muted">Include country code (e.g. 15551234567)</small>
                        </div>
                        <div class="col-md-3 mb-3">
                            <label>Facebook</label>
                            <input type="url" name="organizer_facebook" class="form-control"
                                value="{{ old('organizer_facebook', $techEvent->organizer_facebook ?? '') }}">
                        </div>
                        <div class="col-md-3 mb-3">
                            <label>Twitter</label>
                            <input type="url" name="organizer_twitter" class="form-control"
                                value="{{ old('organizer_twitter', $techEvent->organizer_twitter ?? '') }}">
                        </div>

                        <div class="col-md-3 mb-3">
                            <label>LinkedIn</label>
                            <input type="url" name="organizer_linkedin" class="form-control"
                                value="{{ old('organizer_linkedin', $techEvent->organizer_linkedin ?? '') }}">
                        </div>

                        <div class="col-md-3 mb-3">
                            <label>Instagram</label>
                            <input type="url" name="organizer_instagram" class="form-control"
                                value="{{ old('organizer_instagram', $techEvent->organizer_instagram ?? '') }}">
                        </div>
                        <div class="row">
                            <div class="col-md-6 mb-3">
                                <label>Organizer Logo</label>
                                <input type="file" name="organizer_logo" class="form-control">
                                @if (isset($techEvent) && $techEvent->organizer_logo)
                                    <div class="mt-2">
                                        <img src="{{ asset('storage/' . $techEvent->organizer_logo) }}" width="120"
                                            class="img-thumbnail">
                                    </div>
                                @endif
                            </div>
                        </div>
                        <div>
                            <label>Venue Images</label>
                            <input type="file" name="venue_images[]" accept="image/*" multiple>
                            @if (isset($techEvent) && $techEvent->venueImages->count())
                                <div class="venue-gallery">
                                    @foreach ($techEvent->venueImages as $img)
                                        <div style="display:inline-block; margin-right:5px; position:relative;">
                                            <img src="{{ asset('storage/' . $img->image) }}" alt="Venue Image"
                                                style="width:150px;height:100px;object-fit:cover;">
                                            {{-- Optional: Add a delete button --}}
                                            <a href="{{ route('admin.tech-events.venue-image.delete', $img->id) }}"
                                                style="position:absolute; top:0; right:0; color:red;">&times;</a>
                                        </div>
                                    @endforeach
                                </div>
                            @endif

                        </div>
                        <div class="col-md-4 mb-3">
                            <label class="form-label">Venue Format</label>
                            <select name="venue_format" class="form-control">
                                <option value="">Select Format</option>

                                <option value="virtual"
                                    {{ old('venue_format', $techEvent->venue_format ?? '') == 'virtual' ? 'selected' : '' }}>
                                    Virtual
                                </option>

                                <option value="in_person"
                                    {{ old('venue_format', $techEvent->venue_format ?? '') == 'in_person' ? 'selected' : '' }}>
                                    In-Person
                                </option>

                                <option value="hybrid"
                                    {{ old('venue_format', $techEvent->venue_format ?? '') == 'hybrid' ? 'selected' : '' }}>
                                    Hybrid
                                </option>
                            </select>
                        </div>
                        <div class="col-md-4">

                            <label for="venue" class="form-label">Venue</label>
                            <input type="text" name="venue" id="venue" class="form-control"
                                value="{{ old('venue', $techEvent->venue ?? '') }}">

                        </div>
                        <div class="col-md-4">
                            <label class="form-label">Country</label>
                            <input type="text" name="country" class="form-control"
                                value="{{ old('country', $techEvent->country) }}">
                        </div>

                        <div class="row">
                            <div class="col-md-4 mb-3">
                                <label class="form-label">Start Date</label>
                                <input type="date" name="start_date"
                                    class="form-control @error('start_date') is-invalid @enderror"
                                    value="{{ old('start_date', $techEvent->start_date) }}">
                                @error('start_date')
                                    <div class="invalid-feedback">{{ $message }}</div>
                                @enderror
                            </div>

                            <div class="col-md-4 mb-3">
                                <label class="form-label">End Date</label>
                                <input type="date" name="end_date"
                                    class="form-control @error('end_date') is-invalid @enderror"
                                    value="{{ old('end_date', $techEvent->end_date) }}">
                                @error('end_date')
                                    <div class="invalid-feedback">{{ $message }}</div>
                                @enderror
                                <small class="text-muted">Leave empty if it is a 1-day event.</small>
                            </div>

                            <div class="col-md-4 mb-3">
                                <label class="form-label">Event Time (optional)</label>
                                <input type="time" name="event_time"
                                    class="form-control @error('event_time') is-invalid @enderror"
                                    value="{{ old('event_time', $techEvent->event_time) }}">
                                @error('event_time')
                                    <div class="invalid-feedback">{{ $message }}</div>
                                @enderror
                            </div>
                        </div>
                        <div class="row">
                            <div class="col-md-4">
                                <label class="form-label">Organizer</label>
                                <input type="text" name="organizer" class="form-control"
                                    value="{{ old('organizer', $techEvent->organizer) }}">
                            </div>
                            <div class="col-md-4 mb-3">
                                <label class="form-label">Organizer Name (Optional)</label>
                                <input type="text" name="organizer_name" class="form-control"
                                    value="{{ old('organizer_name') }}">
                            </div>

                            <div class="col-md-4 mb-3">
                                <label class="form-label">Organizer Website (Optional)</label>
                                <input type="url" name="organizer_website" class="form-control"
                                    value="{{ old('organizer_website') }}" placeholder="https://example.com">
                            </div>

                            <div class="col-md-6">
                                <label class="form-label">Registration URL</label>
                                <input type="url" name="registration_url" class="form-control"
                                    value="{{ old('registration_url', $techEvent->registration_url) }}">
                            </div>

                            <div class="col-md-12">
                                <label class="form-label">Description</label>
                                <textarea name="description" class="form-control" rows="5">{{ old('description', $techEvent->description) }}</textarea>
                            </div>
                            <div class="col-md-12">
                                <label class="form-label">Disclaimer</label>
                                <textarea name="disclaimer" class="form-control" rows="5">{{ old('disclaimer', $techEvent->disclaimer) }}</textarea>
                            </div>
                            <div class="col-md-6">
                                <label class="form-label">Poster Image</label>
                                <input type="file" name="poster" class="form-control">

                                @if ($techEvent->poster)
                                    <div class="mt-2 mb-4">
                                        <img src="{{ asset('storage/' . $techEvent->poster) }}"
                                            style="width:90px;height:90px;object-fit:cover;border-radius:10px;">
                                    </div>
                                @endif
                            </div>

                            <div class="col-md-4 d-flex align-items-center">
                                <div class="form-check mt-4">
                                    <input class="form-check-input" type="checkbox" name="is_active" id="is_active"
                                        {{ old('is_active', $techEvent->is_active) ? 'checked' : '' }}>
                                    <label class="form-check-label" for="is_active">
                                        Active
                                    </label>
                                </div>
                            </div>
                            <div id="amenities-wrapper">
                                @if ($techEvent->amenities->count())
                                    @foreach ($techEvent->amenities as $index => $amenity)
                                        <div class="card p-3 mb-3">
                                            <div class="d-flex justify-content-between mb-2">
                                                <strong>Amenity</strong>
                                                <button type="button" class="btn btn-sm btn-danger"
                                                    onclick="this.closest('.card').remove()">
                                                    Remove
                                                </button>
                                            </div>
                                            <div class="col-md-6">
                                                <label>Icon (FontAwesome class)</label>
                                                <input type="text" name="amenities[{{ $index }}][icon]"
                                                    value="{{ $amenity->icon }}" class="form-control"
                                                    placeholder="fa-solid fa-bus">
                                            </div>

                                            <div class="col-md-6">
                                                <label>Title</label>
                                                <input type="text" name="amenities[{{ $index }}][title]"
                                                    value="{{ $amenity->title }}" class="form-control"
                                                    placeholder="Public Transport">
                                            </div>
                                        </div>
                                    @endforeach
                                @endif
                            </div>

                            <div class="col-md-6">
                                <h5 class="mb-3">Speakers</h5>
                                <div id="speakers-wrapper"></div>
                                <button type="button" class="btn btn-outline-success btn-sm" onclick="addSpeaker()">
                                    + Add Speaker
                                </button>
                            </div>
                            <h5 class="mt-4 mb-3">Amenities</h5>
                            <div class="col-md-6">
                                <button type="button" class="btn btn-outline-primary btn-sm" onclick="addAmenity()">
                                    + Add Amenity
                                </button>
                            </div>

                        </div>
                        <script>
                            function addSpeaker() {

                                const wrapper = document.getElementById("speakers-wrapper");

                                // generate unique key using timestamp
                                const speakerIndex = Date.now();

                                const html = `
                                    <div class="card p-3 mb-3">
                                        <div class="d-flex justify-content-between align-items-center mb-2">
                                            <strong>Speaker</strong>
                                            <button type="button"
                                                    class="btn btn-sm btn-danger"
                                                    onclick="this.closest('.card').remove()">
                                                Remove
                                            </button>
                                        </div>

                                        <div class="row">
                                            <div class="col-md-4 mb-2">
                                                <label class="form-label">Name</label>
                                                <input type="text"
                                                    name="speakers[${speakerIndex}][name]"
                                                    class="form-control">
                                            </div>

                                            <div class="col-md-4 mb-2">
                                                <label class="form-label">Role</label>
                                                <input type="text"
                                                    name="speakers[${speakerIndex}][role]"
                                                    class="form-control"
                                                    placeholder="CEO, Founder, Engineer...">
                                            </div>

                                            <div class="col-md-4 mb-2">
                                                <label class="form-label">Speaker Image</label>
                                                <input type="file"
                                                    name="speakers[${speakerIndex}][image]"
                                                    class="form-control">
                                            </div>
                                        </div>
                                    </div>
                                `;

                                wrapper.insertAdjacentHTML("beforeend", html);
                            }
                        </script>
                    </div>
                    <div class="mt-4">
                        <button type="submit" class="btn btn-primary">
                            Update Event
                        </button>
                    </div>
                </form>
            </div>
        </div>
    </div>
    <script>
        function addAmenity() {

            const wrapper = document.getElementById("amenities-wrapper");
            const index = Date.now(); // unique index

            const html = `
                <div class="card p-3 mb-3">
                    <div class="d-flex justify-content-between mb-2">
                        <strong>Amenity</strong>
                        <button type="button"
                                class="btn btn-sm btn-danger"
                                onclick="this.closest('.card').remove()">
                            Remove
                        </button>
                    </div>

                    <div class="row">
                        <div class="col-md-6">
                            <label>Icon (FontAwesome class)</label>
                            <input type="text"
                                name="amenities[${index}][icon]"
                                class="form-control"
                                placeholder="fa-solid fa-bus">
                        </div>

                        <div class="col-md-6">
                            <label>Title</label>
                            <input type="text"
                                name="amenities[${index}][title]"
                                class="form-control"
                                placeholder="Public Transport">
                        </div>
                    </div>
                </div>
            `;

            wrapper.insertAdjacentHTML("beforeend", html);
        }
    </script>

    <script>
        function previewFlag(event) {
            const reader = new FileReader();
            reader.onload = function() {
                const output = document.getElementById('flagPreview');
                output.src = reader.result;
                output.style.display = "block";
            };
            reader.readAsDataURL(event.target.files[0]);
        }
    </script>
@endsection