#include "emul.h"
#include "6502.h"
#include "memory.h"
#include "6522.h"
#include "7seg.h"

#include <stdlib.h>

#include "options.h"
#include "version.h"

static int parse_options_and_arguments( int argc, char *argv[], struct gengetopt_args_info *args_info ) {
        cmdline_parser_init( args_info );

        if( cmdline_parser2( argc, argv, args_info, 1, 0, 1 ) != 0 ) {
        	cmdline_parser_free( args_info );
        	return 1;
        }

        return 0;
}

int main( int argc, char *argv[] )
{
	struct gengetopt_args_info args_info;
	emul_t emul;
	bus_t bus;
	memory_t rom;
	memory_t ram;
	via_6522_t via;
	seg7_t seg7;
	cpu_6502_t cpu;

	if( parse_options_and_arguments( argc, argv, &args_info ) != 0 ) {
		exit( EXIT_FAILURE );
	}
	
	if( args_info.long_version_given ) {
		printf( "emu version: %s, Copyright (c) 2020, GPLv3, Andreas Baumann <mail at andreasbaumann dot cc>\n", EMU_VERSION );
		exit( EXIT_SUCCESS );
	}

	bus_init( &bus );
			
	memory_init( &rom, MEMORY_ROM, ROM_START, ROM_SIZE, args_info.initialize_given );
	memory_load( &rom, args_info.rom_arg );
	bus_register( &bus, &rom.base, ROM_START, ROM_END );
	
	memory_init( &ram, MEMORY_RAM, RAM_START, RAM_SIZE, args_info.initialize_given );
	bus_register( &bus, &ram.base, RAM_START, RAM_END );

	via_6522_init( &via, VIA_START, args_info.initialize_given );
	bus_register( &bus, &via.base, VIA_START, VIA_END );

	seg7_init( &seg7, args_info.initialize_given );
	via_6522_register( &via, &seg7.base );
		
	cpu_6502_init( &cpu, &bus, args_info.initialize_given );
	if( args_info.debug_given ) {
		if( args_info.print_cpu_given ) {
			cpu.debug_flags |= DEBUG_STATUS;
		}
		if( args_info.print_zero_page_given ) {
			cpu.debug_flags |= DEBUG_ZERO_PAGE;
		}
		if( args_info.print_stack_given ) {
			cpu.debug_flags |= DEBUG_STACK;
		}
		if( args_info.print_7seg_given ) {
			seg7.debug = true;
		}
	}
		
	emul_init( &emul, &cpu, &bus, args_info.width_arg, args_info.height_arg );
	if( args_info.gui_given ) {
		emul.gui = true;	
	}
	if( args_info.debug_given ) {
		emul.debug = true;
	}
	if( args_info.start_paused_given ) {
		emul.paused = true;
		emul.speed = 25;
	}
	emul_start( &emul );

	cpu_6502_reset( &cpu );
	
	emul_run( &emul, args_info.steps_arg );
	
	bus_deinit( &bus );
	emul_free( &emul );
	cmdline_parser_free( &args_info );
	exit( EXIT_SUCCESS );
}