require('vis')

local mode_strings = {
	[vis.modes.NORMAL]           = 'NORMAL',
	[vis.modes.OPERATOR_PENDING] = 'OPERATOR-PENDING',
	[vis.modes.VISUAL]           = 'VISUAL',
	[vis.modes.VISUAL_LINE]      = 'VISUAL-LINE',
	[vis.modes.INSERT]           = 'INSERT',
	[vis.modes.REPLACE]          = 'REPLACE',
}

-- editor options
vis.events.subscribe(vis.events.INIT, function()
	vis.options.theme = require("themes.basic")

	vis:map(vis.modes.NORMAL,      'y', '<vis-register>+<vis-operator-yank>')
	vis:map(vis.modes.VISUAL,      'y', '<vis-register>+<vis-operator-yank>')
	vis:map(vis.modes.NORMAL,      'y', '<vis-register>+<vis-operator-yank>')
	vis:map(vis.modes.VISUAL,      'd', '<vis-register>+<vis-operator-delete>')
	vis:map(vis.modes.VISUAL_LINE, 'd', '<vis-register>+<vis-operator-delete>')
	vis:map(vis.modes.VISUAL_LINE, 'd', '<vis-register>+<vis-operator-delete>')
	vis:map(vis.modes.NORMAL,      'p', '<vis-register>+<vis-put-after>')
	vis:map(vis.modes.VISUAL,      'p', '<vis-register>+<vis-put-after>')
	vis:map(vis.modes.VISUAL_LINE, 'p', '<vis-register>+<vis-put-after>')
	vis:map(vis.modes.NORMAL,      'P', '<vis-register>+<vis-put-before>')
	vis:map(vis.modes.VISUAL,      'P', '<vis-register>+<vis-put-before>')
	vis:map(vis.modes.VISUAL_LINE, 'P', '<vis-register>+<vis-put-before>')

	vis.options.autoindent = true
	vis.options.ignorecase = true
end)

-- window options
vis.events.subscribe(vis.events.WIN_OPEN, function(win)
	win.options.colorcolumn = 81
	win.options.relativenumbers = true

	if win.syntax == 'markdown' then
		win.options.breakat = " .])}_"
		win.options.expandtab = true
		win.options.tabwidth = 2
		win.options.wrapcolumn = 81
	end
end)

vis.events.subscribe(vis.events.WIN_STATUS, function(win)
	set_statusline(win, mode_strings[vis.mode])
end)

function set_statusline(win, mode_string)
	local left_parts = {}
	local right_parts = {}
	local file = win.file
	local selection = win.selection

	local file_info = (file.name or '[No Name]')..(file.modified and '[+]' or '')

	if vis.win == win then
		-- mode
		table.insert(left_parts, mode_string)

		-- selection
		table.insert(left_parts, selection.number..'/'..#win.selections)

		-- file info
		file_info =
			file_info
			..':'
			..(vis.count or '')
			..(vis.input_queue or '')
			..(vis.recording and '@' or '')

		-- character under cursor
		table.insert(right_parts,
			'<'
			..(string.byte(file:content(selection.pos, 1)) or '0')
			..'>')
	end

	table.insert(left_parts, file_info)

	-- line and column count
	table.insert(right_parts, #file.lines..'/'..selection.line)
	table.insert(right_parts, selection.col)

	win:status(table.concat(left_parts, " "), table.concat(right_parts, " "));
end