" ui.vim — colorscheme, statusline, startify, indentline

" ── Colorscheme (Solarized Dark — matches tmux palette) ────────────────────

if g:has_true_color && has('termguicolors') && !g:is_tty
    let &t_8f = "\<Esc>[38;2;%lu;%lu;%lum"
    let &t_8b = "\<Esc>[48;2;%lu;%lu;%lum"
    set termguicolors
endif

set background=dark

if !g:is_tty
    try
        colorscheme solarized8
    catch
        colorscheme default
    endtry
else
    colorscheme default
endif

if has("gui_running")
    if has("gui_gtk2") || has("gui_gtk3")
        set guifont=Hack\ 12,Source\ Code\ Pro\ 12,Monospace\ 12
    elseif has("gui_win32")
        set guifont=Consolas:h11:cANSI
    endif
endif

" ── IndentLine (non-TTY only) ───────────────────────────────────────────────

if !g:is_tty && exists('g:plugs["indentLine"]')
    let g:indentLine_char                 = '|'
    let g:indentLine_first_char           = '|'
    let g:indentLine_showFirstIndentLevel = 1
    let g:indentLine_fileTypeExclude      = ['text', 'help', 'startify', 'markdown']
    let g:indentLine_bufTypeExclude       = ['help', 'terminal', 'nofile']
    let g:indentLine_setConceal           = 2
    let g:indentLine_concealcursor        = ''
endif

" ── Startify ────────────────────────────────────────────────────────────────

if exists('g:plugs["vim-startify"]')
    let g:startify_custom_header = [
        \ '         ██████╗██╗  ██╗ ██████╗ ██████╗ ███████╗████████╗██╗ ██████╗██╗  ██╗███████╗',
        \ '        ██╔════╝██║  ██║██╔═══██╗██╔══██╗██╔════╝╚══██╔══╝██║██╔════╝██║ ██╔╝██╔════╝',
        \ '        ██║     ███████║██║   ██║██████╔╝███████╗   ██║   ██║██║     █████╔╝ ███████╗',
        \ '        ██║     ██╔══██║██║   ██║██╔═══╝ ╚════██║   ██║   ██║██║     ██╔═██╗ ╚════██║',
        \ '        ╚██████╗██║  ██║╚██████╔╝██║     ███████║   ██║   ██║╚██████╗██║  ██╗███████║',
        \ '         ╚═════╝╚═╝  ╚═╝ ╚═════╝ ╚═╝     ╚══════╝   ╚═╝   ╚═╝ ╚═════╝╚═╝  ╚═╝╚══════╝',
        \ '',
        \ ]

    let g:startify_lists = [
        \ { 'type': 'sessions',  'header': ['   Sessions']     },
        \ { 'type': 'files',     'header': ['   Recent Files'] },
        \ { 'type': 'dir',       'header': ['   Current Dir']  },
        \ { 'type': 'bookmarks', 'header': ['   Bookmarks']    },
        \ ]

    let g:startify_bookmarks = [{'v': '~/.vimrc'}]
    if filereadable(expand('~/.zshrc'))
        call add(g:startify_bookmarks, {'z': '~/.zshrc'})
    endif
    if filereadable(expand('~/.bashrc'))
        call add(g:startify_bookmarks, {'b': '~/.bashrc'})
    endif
    if filereadable(expand('~/.config/fish/config.fish'))
        call add(g:startify_bookmarks, {'f': '~/.config/fish/config.fish'})
    endif

    let g:startify_session_persistence = 1
    let g:startify_session_autoload    = 1
    let g:startify_change_to_vcs_root  = 1
    let g:startify_fortune_use_unicode = 0
    let g:startify_enable_special      = 0
    let g:startify_files_number        = 8
    let g:startify_padding_left        = 4

    if !g:is_tty
        augroup ChopstickStartup
            autocmd!
            autocmd StdinReadPre * let s:std_in = 1
            autocmd VimEnter *
                \ if argc() == 1 && isdirectory(argv()[0]) && !exists('s:std_in') |
                \     exe 'cd ' . fnameescape(argv()[0]) |
                \     if exists(':Startify') == 2 | Startify | else | enew | endif |
                \ endif
        augroup END
    endif

endif

" ── Status Line (native — Solarized palette, seamless with tmux bar) ───────

set laststatus=2
set noshowmode

function! s:SLDefineColors() abort
    hi SLNormal  ctermbg=136 ctermfg=234 cterm=bold guibg=#b58900 guifg=#002b36 gui=bold
    hi SLInsert  ctermbg=33  ctermfg=234 cterm=bold guibg=#268bd2 guifg=#002b36 gui=bold
    hi SLVisual  ctermbg=125 ctermfg=234 cterm=bold guibg=#d33682 guifg=#002b36 gui=bold
    hi SLReplace ctermbg=160 ctermfg=234 cterm=bold guibg=#dc322f guifg=#002b36 gui=bold
    hi SLCommand ctermbg=37  ctermfg=234 cterm=bold guibg=#2aa198 guifg=#002b36 gui=bold
    hi SLBody    ctermbg=235 ctermfg=245 cterm=none guibg=#073642 guifg=#93a1a1
    hi SLFlag    ctermbg=235 ctermfg=136 cterm=none guibg=#073642 guifg=#b58900
    hi SLRight   ctermbg=235 ctermfg=240 cterm=none guibg=#073642 guifg=#586e75
    hi SLGit     ctermbg=235 ctermfg=37  cterm=none guibg=#073642 guifg=#2aa198
    hi SLFtype   ctermbg=235 ctermfg=244 cterm=none guibg=#073642 guifg=#839496
endfunction

augroup SLColors
    autocmd!
    autocmd ColorScheme * call s:SLDefineColors()
augroup END
call s:SLDefineColors()

function! SLMode() abort
    let l:m = mode()
    if     l:m ==# 'n'                          | return [' N ', 'SLNormal' ]
    elseif l:m ==# 'i'                          | return [' I ', 'SLInsert' ]
    elseif l:m =~# '[vV]' || l:m ==# "\<C-v>"  | return [' V ', 'SLVisual' ]
    elseif l:m ==# 'R'                          | return [' R ', 'SLReplace']
    elseif l:m ==# 'c'                          | return [' C ', 'SLCommand']
    elseif l:m ==# 't'                          | return [' T ', 'SLInsert' ]
    else                                        | return [' ' . l:m . ' ', 'SLNormal']
    endif
endfunction

function! SLGit() abort
    if !exists('*FugitiveHead') | return '' | endif
    let l:b = FugitiveHead()
    return empty(l:b) ? '' : '  ' . l:b . ' '
endfunction

function! SLAle() abort
    if !exists('*ale#statusline#Count') | return '' | endif
    let l:c = ale#statusline#Count(bufnr(''))
    let l:e = l:c.error + l:c.style_error
    let l:w = l:c.warning + l:c.style_warning
    if l:e == 0 && l:w == 0 | return '' | endif
    return printf(' E:%d W:%d ', l:e, l:w)
endfunction

function! SLBuild() abort
    let [l:label, l:hl] = SLMode()
    let l:s  = '%#' . l:hl . '#' . l:label
    let l:s .= '%#SLBody# %f '
    let l:s .= '%#SLFlag#%m%r'
    let l:s .= '%#SLBody#%='
    let l:s .= '%#SLFlag#' . SLAle()
    let l:s .= '%#SLGit#'  . SLGit()
    let l:s .= '%#SLFtype# %y '
    let l:s .= '%#SLRight# %l:%c  %P '
    return l:s
endfunction

set statusline=%!SLBuild()

if g:is_tty
    set statusline=%f\ %h%w%m%r\ %=%(%l,%c%V\ %=\ %P%)
endif