function! dead#statusline#ModeColor() abort
    return get(g:modes, mode(), '%*')[0]
endfunction

function! dead#statusline#CurrentMode() abort
    return get(g:modes, mode(), '-')[1]
endfunction

function! dead#statusline#StatusLine() abort
    let l:statusline=''
    let l:statusline.='%#error#'
    let l:statusline.=dead#statusline#LinterStatus()
    let l:statusline.='%#User1#'
    let l:statusline.=dead#statusline#LinePasteMode()
    let l:statusline.='%= '
    let l:statusline.=' %p%% %l:%c '
    let l:statusline.=dead#statusline#ModeColor()
    let l:statusline.=dead#statusline#CurrentMode()
    return l:statusline
endfunction

function! dead#statusline#StatusLineNC() abort
    let l:statusline=''
    let l:statusline.='%#User1#'
    let l:statusline.='%= '
    let l:statusline.='%f '
    return l:statusline
endfunction

function! dead#statusline#HelpStatusLine() abort
    let l:statusline=''
    let l:statusline.='%= '
    let l:statusline.='%h'
    return l:statusline
endfunction

function! dead#statusline#FernStatusLine() abort
    let l:statusline=''
    let l:statusline.='%#User8#'
    let l:statusline.='%= '
    let l:statusline.='% '
    return l:statusline
endfunction

function! dead#statusline#UpdateInactiveWindows()
    for winnum in range(1, winnr('$'))
        if winnum != winnr()
            call setwinvar(winnum, '&statusline', '%!dead#statusline#StatusLineNC()')
        endif
    endfor
endfunction

function! dead#statusline#LinePasteMode() abort
    let paste_status = &paste
    if paste_status == 1
        return ' paste '
    else
        return ''
    endif
endfunction

function! dead#statusline#RefreshStatusLine(mode)
    if (a:mode == "active" && &filetype !=? 'help')
        setlocal statusline=%!dead#statusline#StatusLine()
    else
        setlocal statusline=%!dead#statusline#StatusLineNC()
    endif
    if &filetype ==? 'help'
        setlocal statusline=%!dead#statusline#HelpStatusLine()
    endif
    if &filetype ==? 'fern'
        setlocal statusline=%!dead#statusline#FernStatusLine()
    endif
endfunction

function! dead#statusline#LinterStatus() abort
    let l:counts = ale#statusline#Count(bufnr(''))
    let l:all_errors = l:counts.error + l:counts.style_error
    let l:all_non_errors = l:counts.total - l:all_errors
    return l:counts.total == 0 ? '' : printf(
    \ '  :%d  :%d ',
    \ l:all_non_errors,
    \ l:all_errors
    \)
endfunction

function! dead#statusline#GitStatus()
    let [a,m,r] = GitGutterGetHunkSummary()
    return printf('+%d ~%d -%d', a, m, r)
endfunction