// bank_root.cpp — see bank_root.h. main.cpp owns the API pointers; this TU gets them
// extern.

#include "shell/persist/bank_root.h"

#include <vector>

#include "core/capture/capture_paths.h"  // bankRootFor

#define REAPERAPI_MINIMAL
#define REAPERAPI_WANT_EnumProjects
#include "reaper_plugin_functions.h"

namespace reasampler {

namespace {

// EnumProjects is the only SDK read of a project's .rpp path — GetProjectPathEx is the
// recording path, GetProjectName the bare file name. Empty for a never-saved project.
// The active project is read through idx -1 first, so the common case is one call.
std::string rppPathOf(ReaProject* proj) {
    std::vector<char> buf(4096, '\0');
    ReaProject* const active = EnumProjects(-1, buf.data(), static_cast<int>(buf.size()));
    if (!proj || proj == active) return std::string(buf.data());

    for (int idx = 0;; ++idx) {
        buf[0] = '\0';
        ReaProject* const tab = EnumProjects(idx, buf.data(), static_cast<int>(buf.size()));
        if (!tab) return {};  // not an open tab: no location to answer with
        if (tab == proj) return std::string(buf.data());
    }
}

}  // namespace

std::string bankRootOf(ReaProject* proj) {
    // No unsaved root is supplied: a never-saved project has no bank location.
    return capture::bankRootFor(rppPathOf(proj), std::string{});
}

}  // namespace reasampler