#include <stdio.h>
#include "../../libShaderFile.h"

#if _WIN64
#  define LIB_NAME "..\..\..\libShaderFile-x86_64-win64.dll"
#elif _WIN32
#  define LIB_NAME "..\..\..\libShaderFile-i386-win32.dll"
#elif __linux__ && (__amd64 || __x86_64 || _M_AMD64 || __ppc64__)
#  define LIB_NAME "../../../libShaderFile-x86_64-linux.so"
#elif __linux__ && (__i386 || _X86_)
#  define LIB_NAME "../../../libShaderFile-i386-linux.so"
#else
#  error 'unknown operation system'
#endif

int main(int argc, char **argv)
{
    lsf_shader_file_handle_t        sfHandle = 0;
    lsf_shader_generator_handle_t   sgHandle = 0;
    lsf_error_code_t                err = LSF_ERR_NONE;
    int                             ret = 0, i = 3;
    const char*                     code = NULL;
    
    if (argc < 3)
    {
        printf("error: expected input file and generator/class name as parameter\n");
        return 1;
    }
    
    lsf_init(LIB_NAME);
    
    // create shader file
    sfHandle = lsf_shader_file_create();
    if (!sfHandle)
    {
        printf("unable to create shader file: %s\n", lsf_get_last_error_msg());
        ret = 2;
        goto cleanup_lib;
    }
    
    // load shader file
    err = lsf_shader_file_load_from_file(sfHandle, argv[1]);
    if (err != LSF_ERR_NONE) 
    {
        printf("unable to load shader file: %s\n", lsf_get_last_error_msg());
        ret = 3;
        goto cleanup_shader_file;
    }
        
    // create generator
    sgHandle = lsf_generator_create(sfHandle, argv[2]);
    if (!sgHandle)
    {
        printf("unable to create generator: %s\n", lsf_get_last_error_msg());
        ret = 4;
        goto cleanup_shader_file;
    }
    
    // apply properties
    while (i < argc-1)
    {
        err = lsf_generator_set_property_by_name(sgHandle, argv[i], argv[i+1]);
        if (err != LSF_ERR_NONE)
        {
            printf("unable to set property (%s=%s) (err=0x%08x)", argv[i], argv[i+1], err);
            ret = 5;
            goto cleanup_shader_generator;
        }
        i += 2;
    }
    
    // generate code
    code = lsf_generator_generate_code(sgHandle);
    if (!code)
    {
        printf("unable to generate code: %s\n", lsf_get_last_error_msg());
        ret = 4;
        goto cleanup_shader_generator;
    }
    
    printf("%s", code);

cleanup_shader_generator:    
    err = lsf_generator_destroy(sgHandle);
    if (err != LSF_ERR_NONE)
        printf("warning: could not destroy generator handle: %d\n", err);
    
cleanup_shader_file:
    err = lsf_shader_file_destroy(sfHandle);
    if (err != LSF_ERR_NONE)
        printf("warning: could not destroy shader file handle: %d\n", err);
    
cleanup_lib:
    err = lsf_finish();
    if (err != LSF_ERR_NONE)
        printf("warning: could finish library: %d\n", err);
    
    return ret;
}