@layout PageLayout
@inherits BasePage
@inject TechTreeService techTreeService
@inject IEntityDialogService entityDialogService
@inject NavigationManager NavigationManager

@page "/tech-tree"

<LayoutLargeContentComponent>
    <WebsiteTitleComponent>Tech Tree</WebsiteTitleComponent>

    <div class="techTreeControls">
        <div class="techTreeFilters">
            <span class="techTreeLabel">Faction:</span>
            <button class="techTreeFilter @(selectedFaction == null ? "active" : "")"
                    @onclick="() => SelectFaction(null)">All
            </button>
            @foreach (var faction in factions)
            {
                var factionName = GetFactionName(faction);
                <button class="techTreeFilter @(selectedFaction == faction ? "active" : "")"
                        @onclick="() => SelectFaction(faction)">@factionName</button>
            }
        </div>

        <div class="techTreeSearchRow">
            <input class="techTreeSearch" @bind="searchText" @bind:after="OnSearchChanged"
                   placeholder="Search for an entity..."/>
            @if (!string.IsNullOrEmpty(highlightEntityId))
            {
                <button class="techTreeClearBtn" @onclick="ClearHighlight">Clear Highlight</button>
            }
        </div>
    </div>

    <div class="techTreeLegend">
        <span class="legendItem"><span class="legendLine" style="background: #2ed573;"></span> Produces</span>
        <span class="legendItem"><span class="legendLine"
                                       style="background: #ffa502; border-top: 3px dashed #ffa502; height: 0;"></span> Requires Building</span>
        <span class="legendItem"><span class="legendLine"
                                       style="background: #a55eea; border-top: 3px dashed #a55eea; height: 0;"></span> Requires Research</span>
        <span class="legendItem"><span class="legendLine"
                                       style="background: #ff6b6b; border-top: 2px dotted #ff6b6b; height: 0;"></span> Morph</span>
        <span class="legendItem"><span class="legendLine" style="background: #1e90ff;"></span> Upgrade</span>
    </div>

    @if (currentGraph != null && currentGraph.Nodes.Count > 0)
    {
        <TechTreeGraphComponent Graph="@currentGraph" HighlightEntityId="@highlightEntityId"
                                OnEntitySelected="OnEntitySelected"/>
    }
    else
    {
        <PaperComponent>
            <p>No data available for the selected faction.</p>
        </PaperComponent>
    }
</LayoutLargeContentComponent>

<style>
    .techTreeControls {
        display: flex;
        flex-direction: column;
        gap: 12px;
        margin-bottom: 16px;
    }

    .techTreeFilters {
        display: flex;
        align-items: center;
        flex-wrap: wrap;
        gap: 8px;
    }

    .techTreeLabel {
        font-weight: 700;
        margin-right: 4px;
    }

    .techTreeFilter {
        padding: 6px 14px;
        border-radius: 16px;
        border: 2px solid var(--primary-border);
        background-color: var(--primary);
        color: white;
        cursor: pointer;
        font-family: inherit;
        font-size: 0.85rem;
        font-weight: 600;
    }

    .techTreeFilter.active {
        background-color: var(--primary-hover);
        border-color: var(--primary-border-hover);
    }

    .techTreeFilter:hover {
        background-color: var(--primary-hover);
    }

    .techTreeSearchRow {
        display: flex;
        align-items: center;
        gap: 12px;
    }

    .techTreeSearch {
        padding: 10px 16px;
        border-radius: 8px;
        border: 2px solid var(--primary-border);
        background-color: var(--primary);
        color: white;
        font-size: 1rem;
        font-family: inherit;
        flex: 1;
        max-width: 400px;
    }

    .techTreeSearch::placeholder {
        color: rgba(255, 255, 255, 0.5);
    }

    .techTreeClearBtn {
        padding: 6px 14px;
        border-radius: 8px;
        border: 2px solid var(--primary-border);
        background-color: transparent;
        color: white;
        cursor: pointer;
        font-family: inherit;
        font-size: 0.85rem;
    }

    .techTreeClearBtn:hover {
        background-color: var(--primary-hover);
    }

    .techTreeLegend {
        display: flex;
        flex-wrap: wrap;
        gap: 16px;
        margin-bottom: 16px;
        padding: 12px;
        background-color: var(--paper);
        border: 2px solid var(--paper-border);
        border-radius: 8px;
        font-size: 0.8rem;
    }

    .legendItem {
        display: flex;
        align-items: center;
        gap: 6px;
    }

    .legendLine {
        display: inline-block;
        width: 24px;
        height: 3px;
        border-radius: 2px;
    }
</style>

@code {
    private TechTreeGraphModel? currentGraph;
    private List<string> factions = new();
    private string? selectedFaction;
    private string searchText = "";
    private string? highlightEntityId;

    protected override void OnInitialized()
    {
        base.OnInitialized();
        LoadGraph();
    }

    void LoadGraph()
    {
        currentGraph = techTreeService.BuildGraph(selectedFaction);
        factions = techTreeService.GetFactions();
    }

    void SelectFaction(string? faction)
    {
        selectedFaction = faction;
        highlightEntityId = null;
        LoadGraph();
    }

    void OnSearchChanged()
    {
        if (string.IsNullOrWhiteSpace(searchText))
        {
            highlightEntityId = null;
            return;
        }

        var found = currentGraph?.Nodes
            .FirstOrDefault(n => n.Name.Contains(searchText, StringComparison.OrdinalIgnoreCase));

        highlightEntityId = found?.Id;
    }

    void ClearHighlight()
    {
        highlightEntityId = null;
        searchText = "";
    }

    void OnEntitySelected(string entityId)
    {
        highlightEntityId = entityId;
    }

    string GetFactionName(string factionId)
    {
        var entities = EntityData.Get();
        return entities.TryGetValue(factionId, out var entity)
            ? entity.Info()?.Name ?? factionId
            : factionId;
    }

}