#include "Render_Frame_Snapshot.h"
#include "../architecture/Renderable.h"
#include "../architecture/Timeline_Stream.h"
#include <algorithm>

namespace renderive {

bool Render_Frame_Snapshot::destroying() const {
    return !destroying_token || destroying_token->load(std::memory_order_acquire);
}

const Renderable_Frame_Node* Render_Frame_Snapshot::frame_node_for(const Renderable* renderable) const {
    if (!renderable || !frame_tree)
        return nullptr;
    if (const auto* node = find_node(renderable->node_id()))
        return node;
    for (const auto& node : *frame_tree) {
        if (node.renderable.get() == renderable)
            return &node;
    }
    return nullptr;
}

const Renderable_Frame_Node* Render_Frame_Snapshot::find_node(Renderable_Id id) const {
    if (!id || !frame_tree)
        return nullptr;
    for (const auto& node : *frame_tree) {
        if (node.node_id == id)
            return &node;
    }
    return nullptr;
}

std::shared_ptr<const Timeline_Stream_Snapshot> Render_Frame_Snapshot::timeline_snapshot(
    const std::shared_ptr<Timeline_Stream>& stream,
    int time_point_size,
    int label_tick_interval,
    bool start_coord_to_end_coord) const {
    if (!stream)
        return {};
    time_point_size = std::max(1, time_point_size);
    label_tick_interval = std::max(1, label_tick_interval);
    if (!timeline_cache)
        timeline_cache = std::make_shared<Timeline_Stream_Frame_Cache>();
    for (auto& item : timeline_cache->items) {
        if (item.stream.lock() == stream && item.time_point_size == time_point_size && item.tick_space == label_tick_interval && item.start_coord_to_end_coord == start_coord_to_end_coord)
            return item.snapshot;
    }
    auto snapshot = std::make_shared<Timeline_Stream_Snapshot>(stream->capture(time_point_size, label_tick_interval, start_coord_to_end_coord));
    timeline_cache->items.push_back({stream, time_point_size, label_tick_interval, start_coord_to_end_coord, snapshot});
    return snapshot;
}

} // namespace renderive