function! zkvim#create_link(zk_title, zk_id)
    return '[' . a:zk_title . ']' . '(' . a:zk_id . ')'
endfunction

function! zkvim#create_append_link_command(zk_title, zk_id)
    return 'normal! a' . zkvim#create_link(a:zk_title, a:zk_id)
endfunction

function! zkvim#get_new_zettel_id()
    let zk_cmd = 'NOZKEDIT=true zk new'
    return system(zk_cmd)
endfunction

function! zkvim#get_zettel_id(selection)
	return trim(matchstr(a:selection, '[0-9]*\ ')) " TODO: Find out why this requires a space at the end
endfunction

function! zkvim#get_zettel_title(selection)
	return trim(matchstr(a:selection, '#\zs.*\ze'))
endfunction

function! zkvim#znew()
    let zk_filename = zkvim#get_new_zettel_id()
    execute 'edit ' . zk_filename
endfunction

function! zkvim#zinsertnew(zk_title)
    let zk_filename = zkvim#get_new_zettel_id()
	let zk_id = zkvim#get_zettel_id(zk_filename)
	execute zkvim#create_append_link_command(a:zk_title, zk_id)
    execute 'write'
    execute 'edit ' . zk_filename
    execute 'normal! a# ' . a:zk_title
endfunction

function! zkvim#sink(selection) abort
	let zk_id = zkvim#get_zettel_id(a:selection)
	let zk_title = zkvim#get_zettel_title(a:selection)
	execute zkvim#create_append_link_command(zk_title, zk_id)
endfunction

function! zkvim#zsearch()
	let zk_cmd = 'zk list'
	let fzf_options = #{
				\source: zk_cmd,
				\sink: function('zkvim#sink')}

	call fzf#run(fzf_options)
endfunction