#include "input.h"

#include "editor.h"
#include "file.h"
#include "line.h"

void editor_process_keypress(struct editor_state *editor, SDL_Keysym *keysym)
{
	static int quit_message = 1;

	/* Handle keypresses for typing modes separately. */
	if (editor->mode != EDITOR_MODE_NORMAL) {
		if (keysym->sym == SDLK_BACKSPACE)
			editor_delete_char(editor);

		if (keysym->sym == SDLK_RETURN)
			editor_insert_newline(editor);

		if (keysym->sym == SDLK_TAB)
			editor_insert_char(editor, '\t');

		if (keysym->sym == SDLK_ESCAPE)
			editor->mode = EDITOR_MODE_NORMAL;
		return;
	}

	switch (keysym->sym) {
		/* TODO: Reimplement page up/down on Shift+W/S. */
		case SDLK_w:
			editor_move_up(editor);
			break;
		case SDLK_s:
			if (keysym->mod & KMOD_CTRL) {
				editor_save(editor);
				break;
			}
			editor_move_down(editor);
			break;
		case SDLK_a:
			editor_move_left(editor);
			break;
		case SDLK_d:
			editor_move_right(editor);
			break;
		case SDLK_q:
			if (keysym->mod & KMOD_CTRL) {
				if (editor->dirty && quit_message) {
					editor_set_status_message(editor, "This file has unsaved changes. Press Ctrl+Q again to quit");
					quit_message = 0;
					return;
				}
				exit(0);
			}
			editor->cursor_x = 0;
			break;
		case SDLK_e:
			editor_move_end(editor);
			break;
		case SDLK_n:
			editor_delete_char(editor);
			break;
		case SDLK_m:
			editor_move_right(editor);
			editor_delete_char(editor);
			break;
		case SDLK_i:
			editor->mode = EDITOR_MODE_INSERT;
			editor->pressed_insert_key = 1;
			break;
		case SDLK_l:
			if (keysym->mod & KMOD_SHIFT)
				editor_move_end(editor);
			else
				editor_move_right(editor);
			editor->mode = EDITOR_MODE_INSERT;
			editor->pressed_insert_key = 1;
			break;
		case SDLK_o:
			if (keysym->mod & KMOD_SHIFT)
				editor_add_line_above(editor);
			else
				editor_add_line_below(editor);
			editor->mode = EDITOR_MODE_INSERT;
			editor->pressed_insert_key = 1;
			break;
		case SDLK_SLASH:
			editor_find(editor);
			break;
	}

	quit_message = 1;
}