/************************************************************************
 ************************************************************************
    FAUST compiler
    Copyright (C) 2003-2018 GRAME, Centre National de Creation Musicale
    ---------------------------------------------------------------------
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 ************************************************************************
 ************************************************************************/

#include <libgen.h>

#include "Text.hh"
#include "interpreter_dynamic_dsp_aux.hh"
#include "libfaust.h"
#include "lock_api.hh"

using namespace std;

LIBFAUST_API interpreter_dsp_factory* createInterpreterDSPFactoryFromFile(const string& filename, int argc,
                                                                    const char* argv[], string& error_msg)
{
    string base = basename((char*)filename.c_str());
    size_t pos  = filename.find(".dsp");

    if (pos != string::npos) {
        return createInterpreterDSPFactoryFromString(base.substr(0, pos), pathToContent(filename), argc, argv,
                                                     error_msg);
    } else {
        error_msg = "File Extension is not the one expected (.dsp expected)\n";
        return nullptr;
    }
}

LIBFAUST_API interpreter_dsp_factory* createInterpreterDSPFactoryFromString(const string& name_app, const string& dsp_content,
                                                                      int argc, const char* argv[], string& error_msg)
{
    LOCK_API
    string expanded_dsp_content, sha_key;

    if ((expanded_dsp_content = sha1FromDSP(name_app, dsp_content, argc, argv, sha_key)) == "") {
        return nullptr;
    } else {
     
        dsp_factory_table<SDsp_factory>::factory_iterator it;
        if (gInterpreterFactoryTable.getFactory(sha_key, it)) {
            SDsp_factory sfactory = (*it).first;
            sfactory->addReference();
            return sfactory;
        } else {
            try {
                int         argc1 = 0;
                const char* argv1[64];
                argv1[argc1++] = "faust";
                argv1[argc1++] = "-lang";
                argv1[argc1++] = "interp";
                argv1[argc1++] = "-o";
                argv1[argc1++] = "string";
                // Copy arguments
                for (int i = 0; i < argc; i++) {
                    argv1[argc1++] = argv[i];
                }
                argv1[argc1] = nullptr;  // NULL terminated argv
                
                dsp_factory_base* dsp_factory_aux = createFactory(name_app.c_str(), dsp_content.c_str(), argc1, argv1, error_msg, true);
                if (dsp_factory_aux) {
                    dsp_factory_aux->setName(name_app);
                    interpreter_dsp_factory* factory = new interpreter_dsp_factory(dsp_factory_aux);
                    gInterpreterFactoryTable.setFactory(factory);
                    factory->setSHAKey(sha_key);
                    factory->setDSPCode(expanded_dsp_content);
                    return factory;
                } else {
                    return nullptr;
                }
            } catch (faustexception& e) {
                error_msg = e.what();
                return nullptr;
            }
        }
    }
}

LIBFAUST_API interpreter_dsp_factory* createInterpreterDSPFactoryFromSignals(const std::string& name_app, tvec signals,
                                                                       int argc, const char* argv[], std::string& error_msg)
{
    LOCK_API
    try {
        int         argc1 = 0;
        const char* argv1[64];
        argv1[argc1++] = "faust";
        argv1[argc1++] = "-lang";
        argv1[argc1++] = "interp";
        argv1[argc1++] = "-o";
        argv1[argc1++] = "string";
        // Copy arguments
        for (int i = 0; i < argc; i++) {
            argv1[argc1++] = argv[i];
        }
        argv1[argc1] = nullptr;  // NULL terminated argv
        
        dsp_factory_base* dsp_factory_aux = createFactory(name_app.c_str(), signals, argc1, argv1, error_msg);
        if (dsp_factory_aux) {
            dsp_factory_aux->setName(name_app);
            interpreter_dsp_factory* factory = new interpreter_dsp_factory(dsp_factory_aux);
            gInterpreterFactoryTable.setFactory(factory);
            return factory;
        } else {
            return nullptr;
        }
    } catch (faustexception& e) {
        error_msg = e.what();
        return nullptr;
    }
}

LIBFAUST_API interpreter_dsp_factory* createInterpreterDSPFactoryFromBoxes(const std::string& name_app, Tree box,
                                                                       int argc, const char* argv[],
                                                                       std::string& error_msg)
{
    LOCK_API
    try {
        tvec signals = boxesToSignalsAux(box);
        return createInterpreterDSPFactoryFromSignals(name_app, signals, argc, argv, error_msg);
    } catch (faustexception& e) {
        error_msg = e.Message();
        return nullptr;
    }
}

// Public C interface : lock management is done by called C++ API

#ifdef __cplusplus
extern "C" {
#endif

LIBFAUST_API interpreter_dsp_factory* createCInterpreterDSPFactoryFromFile(const char* filename, int argc,
                                                                        const char* argv[], char* error_msg)
{
    string error_msg_aux;
    interpreter_dsp_factory* factory =
        createInterpreterDSPFactoryFromFile(filename, argc, argv, error_msg_aux);
    strncpy(error_msg, error_msg_aux.c_str(), 4096);
    return factory;
}

LIBFAUST_API interpreter_dsp_factory* createCInterpreterDSPFactoryFromString(const char* name_app,
                                                                          const char* dsp_content, int argc,
                                                                          const char* argv[], char* error_msg)
{
    string error_msg_aux;
    interpreter_dsp_factory* factory =
        createInterpreterDSPFactoryFromString(name_app, dsp_content, argc, argv, error_msg_aux);
    strncpy(error_msg, error_msg_aux.c_str(), 4096);
    return factory;
}

LIBFAUST_API interpreter_dsp_factory* createCInterpreterDSPFactoryFromSignals(const char* name_app, Signal* signals_aux,
                                                                           int argc, const char* argv[],
                                                                           char* error_msg)
{
    string error_msg_aux;
    tvec signals;
    int i = 0;
    while (signals_aux[i]) { signals.push_back(signals_aux[i]); i++; }
    interpreter_dsp_factory* factory =
        createInterpreterDSPFactoryFromSignals(name_app, signals, argc, argv, error_msg_aux);
    strncpy(error_msg, error_msg_aux.c_str(), 4096);
    return factory;
}

LIBFAUST_API interpreter_dsp_factory* createCInterpreterDSPFactoryFromBoxes(const char* name_app, Tree box,
                                                                         int argc, const char* argv[],
                                                                         char* error_msg)
{
    string error_msg_aux;
    interpreter_dsp_factory* factory =
        createInterpreterDSPFactoryFromBoxes(name_app, box, argc, argv, error_msg_aux);
    strncpy(error_msg, error_msg_aux.c_str(), 4096);
    return factory;
}
    
#ifdef __cplusplus
}
#endif
