os_start_cli:
	pusha
	
	call os_print_newline

	mov si, prompt
	call os_print_string

	mov ax, 20

	mov di, user_input

	call os_display_input


; ------------------------------------------------

os_read_cli:
	pusha
	mov si, user_input
	call os_upper_case ; Make the input uppercase so it's case insensitive

.output_the_user_input:
	call os_print_newline

.check_matches:			; Check if the user input matches any internal commands
	; Help
	mov si, user_input
	mov di, help_string
	call os_compare_strings
	cmp cl, 1
	je help

	; Clear screen
	mov si, user_input
	mov di, clear_string
	call os_compare_strings
	cmp cl, 1
	je clear

	; Reboot
	mov si, user_input
	mov di, reboot_string
	call os_compare_strings
	cmp cl, 1
	je power_reboot

	; Cat
	mov si, user_input
	mov di, cat_string
	call os_compare_strings
	cmp cl, 1
	je cat

    ; LS
	mov si, user_input
	mov di, ls_string
	call os_compare_strings
	cmp cl, 1
	je ls
	
	; Pong
	mov si, user_input
	mov di, pong_string
	call os_compare_strings
	cmp cl, 1
	je pong

	jmp .unkown

.unkown:
	mov si, unknown_command
	call os_print_string
	mov si, user_input
	call os_print_string
	jmp .finish

.finish:
	popa
	call os_start_cli

clear:
	call os_set_text_mode
	call os_read_cli.finish

help:
	mov si, help_text
	call os_print_string
	call os_read_cli.finish

pong:
	call game_pong
	call os_read_cli.finish

cat:
   call util_cat
   call os_read_cli.finish
ls:
   call util_ls
   call os_read_cli.finish