@page "/cards"
@inject HttpClient Http

<PageTitle>Card Gallery</PageTitle>

<div class="gallery-container">
    <div class="gallery-header">
        <h1>Card Gallery</h1>
        <p class="text-secondary">Browse all @allCards.Count cards</p>
    </div>

    <div class="category-tabs">
        <button class="tab @(categoryFilter == "" ? "active" : "")" @onclick='@(() => SetCategory(""))'>
            <i class="bi bi-grid-3x3-gap-fill"></i> All
        </button>
        <button class="tab agent @(categoryFilter == "Agent" ? "active" : "")" @onclick='@(() => SetCategory("Agent"))'>
            <i class="bi bi-person-fill"></i> Agents
        </button>
        <button class="tab spell @(categoryFilter == "Spell" ? "active" : "")" @onclick='@(() => SetCategory("Spell"))'>
            <i class="bi bi-wand"></i> Spells
        </button>
        <button class="tab token @(categoryFilter == "Token" ? "active" : "")" @onclick='@(() => SetCategory("Token"))'>
            <i class="bi bi-coin"></i> Tokens
        </button>
    </div>

    <div class="filter-bar">
        <div class="search-wrapper">
            <i class="bi bi-search search-icon"></i>
            <input @bind="search" @bind:event="oninput" class="form-control search-input"
                   placeholder="Search cards by name or description..."/>
            @if (search.Length > 0)
            {
                <button class="search-clear" @onclick="ClearSearch"><i class="bi bi-x-lg"></i></button>
            }
        </div>
        <select @bind="factionFilter" class="form-select filter-select">
            <option value="">All Factions</option>
            @foreach (var f in factions)
            {
                <option value="@f">@f</option>
            }
        </select>
        <select @bind="costFilter" class="form-select filter-select">
            <option value="">All Costs</option>
            @for (var i = 0; i <= 12; i++)
            {
                <option value="@i">@i</option>
            }
        </select>
    </div>

    @if (HasActiveFilters)
    {
        <div class="active-filters">
            <span class="filter-label">Filters:</span>
            @if (categoryFilter != "")
            {
                <span class="filter-chip">
                    <i class="bi bi-tag-fill"></i> @categoryFilter
                    <button @onclick="ClearCategoryFilter"><i class="bi bi-x"></i></button>
                </span>
            }
            @if (factionFilter != "")
            {
                <span class="filter-chip">
                    <i class="bi bi-flag-fill"></i> @factionFilter
                    <button @onclick="ClearFactionFilter"><i class="bi bi-x"></i></button>
                </span>
            }
            @if (costFilter != "")
            {
                <span class="filter-chip">
                    <i class="bi bi-lightning-fill"></i> Cost @costFilter
                    <button @onclick="ClearCostFilter"><i class="bi bi-x"></i></button>
                </span>
            }
            <button class="clear-all" @onclick="ClearFilters">Clear all</button>
        </div>
    }

    <div class="result-count">
        <span>@filteredCards.Count() card@(filteredCards.Count() != 1 ? "s" : "") found</span>
        @if (HasActiveFilters || search != "")
        {
            <span class="text-muted">out of @allCards.Count total</span>
        }
    </div>

    @if (filteredCards.Any())
    {
        <div class="card-grid">
            @{ var idx = 0; }
            @foreach (var card in filteredCards)
            {
                <div class="card-cell @(selectedCard == card ? "selected" : "")"
                     style="--i: @idx"
                     @onclick="() => SelectCard(card)">
                    <div class="card-image-wrapper">
                        <div class="card-shimmer"></div>
                        <img src="@card.ImagePath" alt="@card.Name" loading="lazy"
                             onerror="this.src='data:image/svg+xml,<svg xmlns=%22http://www.w3.org/2000/svg%22 width=%22200%22 height=%22280%22><rect fill=%22%23222244%22 width=%22200%22 height=%22280%22/><text fill=%22%23686888%22 font-size=%2214%22 x=%22100%22 y=%22140%22 text-anchor=%22middle%22 dominant-baseline=%22middle%22>No Image</text></svg>'"/>
                        @if (card.Cost.HasValue)
                        {
                            <div class="card-cost-badge">@card.Cost</div>
                        }
                        @if (card.HasImmortalize)
                        {
                            <div class="card-immortalize-badge" title="Immortalizes"><i class="bi bi-star-fill"></i>
                            </div>
                        }
                    </div>
                    <div class="card-label">
                        <div class="card-name">@card.Name</div>
                        <div class="card-category-badge @card.Category?.ToLowerInvariant()">@card.Category</div>
                    </div>
                </div>
                idx++;
            }
        </div>
    }
    else
    {
        <div class="empty-state">
            <i class="bi bi-search"></i>
            <p>No cards match your filters.</p>
            <button class="btn btn-outline-secondary" @onclick="ClearFilters">Reset Filters</button>
        </div>
    }
</div>

@if (selectedCard != null)
{
    <div class="modal-backdrop" @onclick="CloseDetail"></div>
    <div class="card-detail">
        <button class="detail-close" @onclick="CloseDetail"><i class="bi bi-x-lg"></i></button>
        <div class="detail-layout">
            <div class="detail-image">
                <img src="@selectedCard.ImagePath" alt="@selectedCard.Name"/>
            </div>
            <div class="detail-info">
                <div class="detail-header">
                    <h2>@selectedCard.Name</h2>
                    <div class="detail-meta">
                        <span
                            class="meta-badge category @selectedCard.Category?.ToLowerInvariant()">@selectedCard.Category</span>
                        @if (selectedCard.Cost.HasValue)
                        {
                            <span class="meta-badge cost"><i class="bi bi-lightning-fill"></i> @selectedCard.Cost</span>
                        }
                        @if (selectedCard.Attack.HasValue)
                        {
                            <span class="meta-badge attack"><i class="bi bi-crosshair"></i> @selectedCard.Attack</span>
                        }
                        @if (selectedCard.Health.HasValue)
                        {
                            <span class="meta-badge health"><i class="bi bi-heart-fill"></i> @selectedCard.Health</span>
                        }
                        @if (selectedCard.Speed != null)
                        {
                            <span class="meta-badge speed"><i class="bi bi-wind"></i> @selectedCard.Speed</span>
                        }
                    </div>
                </div>

                @if (selectedCard.Faction != null)
                {
                    <div class="detail-field">
                        <span class="field-label"><i class="bi bi-flag-fill"></i> Faction</span>
                        <span class="field-value">@selectedCard.Faction</span>
                    </div>
                }
                @if (selectedCard.Description != null)
                {
                    <div class="detail-field description">
                        <span class="field-label"><i class="bi bi-chat-quote-fill"></i></span>
                        <span class="field-value">@selectedCard.Description</span>
                    </div>
                }
                @if (selectedCard.Set != null)
                {
                    <div class="detail-field">
                        <span class="field-label"><i class="bi bi-collection"></i> Set</span>
                        <span class="field-value">@selectedCard.Set</span>
                    </div>
                }
                @if (selectedCard.Archetypes is { Count: > 0 })
                {
                    <div class="detail-field">
                        <span class="field-label"><i class="bi bi-layers-fill"></i> Archetypes</span>
                        <span class="field-value">@string.Join(", ", selectedCard.Archetypes)</span>
                    </div>
                }
                @if (selectedCard.ImmortalizeWhen != null)
                {
                    <div class="detail-field">
                        <span class="field-label"><i class="bi bi-star-fill"></i> Immortalize When</span>
                        <span class="field-value">@selectedCard.ImmortalizeWhen</span>
                    </div>
                }
                @if (selectedCard.HasImmortalize)
                {
                    <div class="detail-field">
                        <span class="field-label"><i class="bi bi-arrow-right-circle-fill"></i> Immortalizes To</span>
                        <span class="field-value">@string.Join(", ", selectedCard.ImmortalizeTo!)</span>
                    </div>
                }
                @if (selectedCard.ImmortalizeFrom != null)
                {
                    <div class="detail-field">
                        <span class="field-label"><i class="bi bi-arrow-left-circle-fill"></i> Immortalizes From</span>
                        <span class="field-value">@selectedCard.ImmortalizeFrom</span>
                    </div>
                }

                @if (selectedCard.IsAgent)
                {
                    <div class="detail-field note">
                        <span class="field-label"><i class="bi bi-pencil-fill"></i> Personal Note</span>
                        <textarea class="form-control note-input" @bind="currentNote" @onblur="SaveNote"
                                  placeholder="Add a private note about this agent..."></textarea>
                        @if (isSaving)
                        {
                            <span class="saving-indicator">Saving...</span>
                        }
                    </div>
                }
            </div>
        </div>
    </div>
}

@code {
    private List<CardData> allCards = [];
    private IEnumerable<CardData> filteredCards => ApplyFilters();
    private string search = "";
    private string categoryFilter = "";
    private string factionFilter = "";
    private string costFilter = "";
    private CardData? selectedCard;
    private List<string> factions = [];
    private string currentNote = "";
    private bool isSaving = false;

    private bool HasActiveFilters => categoryFilter != "" || factionFilter != "" || costFilter != "";

    protected override void OnInitialized()
    {
        allCards = CardDatabase.Cards;
        factions = allCards
            .Select(c => c.Faction)
            .Where(f => f != null)
            .Distinct()
            .OrderBy(f => f)
            .ToList()!;
    }

    private IEnumerable<CardData> ApplyFilters()
    {
        var q = search?.Trim().ToLowerInvariant() ?? "";
        return allCards.Where(c =>
            (q.Length == 0 || c.Name.ToLowerInvariant().Contains(q) ||
             (c.Description?.ToLowerInvariant().Contains(q) ?? false)) &&
            (categoryFilter == "" || c.Category == categoryFilter) &&
            (factionFilter == "" || c.Faction == factionFilter) &&
            (costFilter == "" || c.Cost?.ToString() == costFilter)
        );
    }

    private void SetCategory(string cat)
    {
        categoryFilter = categoryFilter == cat ? "" : cat;
    }

    private void ClearCategoryFilter()
    {
        categoryFilter = "";
    }

    private void ClearFactionFilter()
    {
        factionFilter = "";
    }

    private void ClearCostFilter()
    {
        costFilter = "";
    }

    private void ClearSearch()
    {
        search = "";
    }

    private async Task SelectCard(CardData card)
    {
        selectedCard = card;
        if (card.IsAgent)
        {
            currentNote = "";
            try
            {
                var note = await Http.GetFromJsonAsync<CardNote>($"api/notes/{Uri.EscapeDataString(card.Name)}");
                currentNote = note?.Note ?? "";
            }
            catch
            {
                currentNote = "";
            }
        }
    }

    private async Task SaveNote()
    {
        if (selectedCard == null || !selectedCard.IsAgent) return;

        isSaving = true;
        try
        {
            await Http.PostAsJsonAsync("api/notes", new CardNote { CardName = selectedCard.Name, Note = currentNote });
        }
        catch
        {
            // Error handling
        }
        finally
        {
            isSaving = false;
        }
    }

    private void CloseDetail()
    {
        selectedCard = null;
    }

    private void ClearFilters()
    {
        search = "";
        categoryFilter = "";
        factionFilter = "";
        costFilter = "";
    }

}