// Copyright 2025 The Dawn & Tint Authors
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#include "src/dawn/replay/Capture.h"

#include <span>
#include <sstream>
#include <utility>

#include "src/dawn/replay/SurfaceDiscovery.h"
#include "src/utils/numeric.h"

namespace dawn::replay {

Capture::~Capture() = default;

std::unique_ptr<Capture> Capture::Create(CaptureStream& commandStream,
                                         size_t commandSize,
                                         CaptureStream& contentStream,
                                         size_t contentSize) {
    return CaptureImpl::Create(commandStream, commandSize, contentStream, contentSize);
}

std::unique_ptr<CaptureImpl> CaptureImpl::Create(CaptureStream& commandStream,
                                                 size_t commandSize,
                                                 CaptureStream& contentStream,
                                                 size_t contentSize) {
    std::vector<uint8_t> commands;
    commands.resize(commandSize);
    commandStream.read(reinterpret_cast<char*>(commands.data()), sign_cast(commandSize));

    std::vector<uint8_t> content;
    content.resize(contentSize);
    contentStream.read(reinterpret_cast<char*>(content.data()), sign_cast(contentSize));

    return std::unique_ptr<CaptureImpl>(new CaptureImpl(std::move(commands), std::move(content)));
}

CaptureImpl::CaptureImpl(std::vector<uint8_t> commands, std::vector<uint8_t> content)
    : mCommands(std::move(commands)), mContent(std::move(content)) {}

CaptureImpl::~CaptureImpl() {}

bool CaptureImpl::Walk(RootCommandVisitor& visitor) {
    auto result = CaptureWalker::Walk(visitor);
    if (result.IsError()) {
        result.AcquireError();
        return false;
    }
    return true;
}

std::vector<SurfaceInfo> CaptureImpl::GetSurfaceInfos() const {
    SurfaceDiscoveryVisitor discovery;
    const_cast<CaptureImpl*>(this)->Walk(discovery);
    return discovery.GetSurfaceInfos();
}

ReadHead CaptureImpl::GetCommandReadHead() const {
    return ReadHead(mCommands);
}

ReadHead CaptureImpl::GetContentReadHead() const {
    return ReadHead(mContent);
}

}  // namespace dawn::replay