// insert_fx_enable — pure implementation. See insert_fx_enable.h.

#include "core/ui/insert_fx_enable.h"

namespace reasampler::ui {

InsertFxRefusal insertFxRefusal(int focusedCaptureCount, bool trackSelected,
                                bool masterOnlySelected) {
    if (focusedCaptureCount <= 0) return InsertFxRefusal::NoCapture;
    if (focusedCaptureCount > 1) return InsertFxRefusal::MultiCapture;
    if (!trackSelected)
        return masterOnlySelected ? InsertFxRefusal::MasterOnlySelected : InsertFxRefusal::NoTrack;
    return InsertFxRefusal::None;
}

bool insertFxButtonEnabled(int focusedCaptureCount) {
    return insertFxRefusal(focusedCaptureCount, /*trackSelected=*/true) ==
           InsertFxRefusal::None;
}

std::string insertFxRefusalMessage(InsertFxRefusal refusal) {
    switch (refusal) {
        case InsertFxRefusal::None:
            return {};
        case InsertFxRefusal::NoCapture:
            return "select a capture in the bank panel first, then insert it as an "
                   "instrument on the selected track";
        case InsertFxRefusal::MultiCapture:
            return "select exactly ONE capture -- a ReaSampler 9000 instance holds one "
                   "capture, so a multi-capture selection has no single sound to load";
        case InsertFxRefusal::NoTrack:
            return "select a track first -- the instrument is added to the selected "
                   "track's FX chain";
        case InsertFxRefusal::MasterOnlySelected:
            return "select a track other than the master -- the master track cannot "
                   "host the instrument";
    }
    return {};
}

} // namespace reasampler::ui