#include "slcore.h"

/*
	before starting this, should set app user to have :
	sudo usermod -aG video,input $USER
	also this only work on linux x86_64 computer
*/
drmModeConnector	*ListMonitors() {
    int fd = open("/dev/dri/card0", O_RDWR | O_NONBLOCK);
    if (fd < 0) {
		return(NULL);
	}

	drmModeConnector *monitors = 0x00;
    drmModeRes *res = drmModeGetResources(fd);
    for (int i = 0; i < res->count_connectors; i++) {
        drmModeConnector *conn = 0x00;
		conn = drmModeGetConnector(fd, res->connectors[i]);
        
        if (conn->connection == DRM_MODE_CONNECTED) {
            printf("Monitor Found: ID %d | Type: %d\n", \
				conn->connector_id, conn->connector_type);
			//addconn to connected monitor
        	arrpush(monitors, *conn);
		}
        drmModeFreeConnector(conn);
    }
    drmModeFreeResources(res);
    close(fd);
	return (monitors);
}

/*	todo:
 *	-KEYMAP_IMPLEMENTATION
 *	-drmcache check gbm framebuffercaching;
*/
int	entry_window_display_manager(int ac, char**av,char**envp) {
	(void)ac;
	(void)av;
	(void)envp;
	//printf("%i", drmAvailable());
	drmModeConnector *monitors = NULL;
	monitors = ListMonitors();
	if (!monitors || !arrlen(monitors)) {
		//Log Error no available monitors
		return (-1);
	}
	for (int i = 0; i < arrlen(monitors); i++) {
		printf("%dx%d@%d\n", monitors[i].modes[0].vdisplay, monitors[i].modes[0].hdisplay, monitors[i].modes[0].vrefresh);
	}
	arrfree(monitors);
	return (0);
}