"==========================================
" Author:  zthxxx
" BlogPost: https://blog.zthxxx.me
" ReadMe: README.md
" Sections:
"       -> Initial Plugin 加载插件
"       -> General Settings 基础设置
"       -> Display Settings 展示/排版等界面格式设置
"       -> FileEncode Settings 文件编码设置
"       -> Others 其它配置
"       -> HotKey Settings  自定义快捷键
"       -> FileType Settings  针对文件类型的设置
"       -> Theme Settings  主题设置
"
"       -> 插件配置和具体设置在 vimrc.bundles 中
"==========================================

"==========================================
" Initial Plugin 加载插件
"==========================================

" install bundles
if filereadable(expand("~/.vimrc.bundles"))
  source ~/.vimrc.bundles
elseif filereadable(expand("~/.config/nvim/vimrc.bundles")) " neovim
  source ~/.config/nvim/vimrc.bundles
endif

" ensure ftdetect et al work by including this after the bundle stuff
filetype plugin indent on

" NOTE: 以下配置有详细说明，一些特性不喜欢可以直接注解掉

"==========================================
" General Settings 基础设置
"==========================================

" 修改leader键
let mapleader = ' '
let g:mapleader = ' '

" 映射 ESC
inoremap <leader>[ <Esc>

" 开启语法高亮
syntax on

" history存储容量
set history=2000

" 检测文件类型
filetype on
" 针对不同的文件类型采用不同的缩进格式
filetype indent on
" 允许插件
filetype plugin on
" 启动自动补全
filetype plugin indent on

" 文件修改之后自动载入
set autoread
" 启动的时候不显示那个援助乌干达儿童的提示
set shortmess=atI

" 备份,到另一个位置. 防止误删, 目前是取消备份
"set backup
"set backupext=.bak
"set backupdir=/tmp/vimbk/

" 取消备份。 视情况自己改
set nobackup
" 关闭交换文件
set noswapfile


" TODO: remove this, use gundo
" create undo file
" if has('persistent_undo')
  " " How many undos
  " set undolevels=1000
  " " number of lines to save for undo
  " set undoreload=10000
  " " So is persistent undo ...
  " "set undofile
  " set noundofile
  " " set undodir=/tmp/vimundo/
" endif

set wildignore=*.swp,*.bak,*.pyc,*.class,.svn

" 突出显示当前列
" set cursorcolumn
" 突出显示当前行
set cursorline


" 设置 退出vim后，内容显示在终端屏幕, 可以用于查看和复制, 不需要可以去掉
" 好处：误删什么的，如果以前屏幕打开，可以找回
set t_ti= t_te=


" 键盘党....
 set mouse-=a
" 启用鼠标
" set mouse=a
" Hide the mouse cursor while typing
" set mousehide


" 修复ctrl+m 多光标操作选择的bug，但是改变了ctrl+v进行字符选中时将包含光标下的字符
set selection=inclusive
set selectmode=mouse,key

" change the terminal's title
set title
" 去掉输入错误的提示声音
set novisualbell
set noerrorbells
set t_vb=
set tm=500

" Remember info about open buffers on close
set viminfo^=%

" For regular expressions turn magic on
set magic

" Configure backspace so it acts as it should act
set backspace=eol,start,indent
set whichwrap+=<,>,h,l

"==========================================
" Display Settings 展示/排版等界面格式设置
"==========================================

" 显示当前的行号列号
set ruler
" 在状态栏显示正在输入的命令
set showcmd
" 左下角显示当前vim模式
set showmode

" 在上下移动光标时，光标的上方或下方至少会保留显示的行数
set scrolloff=7

" set winwidth=0

" 命令行（在状态行下）的高度，默认为1，这里是2
set statusline=%<%f\ %h%m%r%=%k[%{(&fenc==\"\")?&enc:&fenc}%{(&bomb?\",BOM\":\"\")}]\ %-14.(%l,%c%V%)\ %P
" Always show the status line - use 2 lines for the status bar
set laststatus=2

" 显示行号
set number
" 取消换行
set nowrap

" 括号配对情况, 跳转并高亮一下匹配的括号
set showmatch
" How many tenths of a second to blink when matching brackets
set matchtime=2


" 设置文内智能搜索提示
" 高亮search命中的文本
set hlsearch
" 打开增量搜索模式,随着键入即时搜索
set incsearch
" 搜索时忽略大小写
set ignorecase
" 有一个或以上大写字母时仍大小写敏感
set smartcase

" 代码折叠
set foldenable
" 折叠方法
" manual    手工折叠
" indent    使用缩进表示折叠
" expr      使用表达式定义折叠
" syntax    使用语法定义折叠
" diff      对没有更改的文本进行折叠
" marker    使用标记进行折叠, 默认标记是 {{{ 和 }}}
set foldmethod=indent
set foldlevel=99
" 代码折叠自定义快捷键 <leader>zz
let g:FoldMethod = 0
map <leader>zz :call ToggleFold()<cr>
fun! ToggleFold()
    if g:FoldMethod == 0
        exe "normal! zM"
        let g:FoldMethod = 1
    else
        exe "normal! zR"
        let g:FoldMethod = 0
    endif
endfun

" 缩进配置
" Smart indent
set smartindent
" 打开自动缩进
" never add copyindent, case error   " copy the previous indentation on autoindenting
set autoindent

" tab相关变更
" 设置Tab键的宽度        [等同的空格个数]
set tabstop=4
" 每一次缩进对应的空格数
set shiftwidth=4
" 按退格键时可以一次删掉 4 个空格
set softtabstop=4
" insert tabs on the start of a line according to shiftwidth, not tabstop 按退格键时可以一次删掉 4 个空格
set smarttab
" 将Tab自动转化成空格[需要输入真正的Tab键时，使用 Ctrl+V + Tab]
set expandtab
" 缩进时，取整 use multiple of shiftwidth when indenting with '<' and '>'
set shiftround

" A buffer becomes hidden when it is abandoned
set hidden
set wildmode=list:longest
set ttyfast

" 00x增减数字时使用十进制
set nrformats=

" 相对行号: 行号变成相对，可以用 nj/nk 进行跳转
set relativenumber number
au FocusLost * :set norelativenumber number
au FocusGained * :set relativenumber
" 插入模式下用绝对行号, 普通模式下用相对
autocmd InsertEnter * :set norelativenumber number
autocmd InsertLeave * :set relativenumber
function! NumberToggle()
  if(&relativenumber == 1)
    set norelativenumber number
  else
    set relativenumber
  endif
endfunc
nnoremap <C-n> :call NumberToggle()<cr>

" 防止tmux下vim的背景色显示异常
" Refer: http://sunaku.github.io/vim-256color-bce.html
if &term =~ '256color'
  " disable Background Color Erase (BCE) so that color schemes
  " render properly when inside 256-color tmux and GNU screen.
  " see also http://snk.tuxfamily.org/log/vim-256color-bce.html
  set t_ut=
endif

"==========================================
" FileEncode Settings 文件编码,格式
"==========================================
" 设置新文件的编码为 UTF-8
set encoding=utf-8
" 自动判断编码时，依次尝试以下编码：
set fileencodings=ucs-bom,utf-8,cp936,gb18030,big5,euc-jp,euc-kr,latin1
set helplang=cn
"set langmenu=zh_CN.UTF-8
"set enc=2byte-gb18030
" 下面这句只影响普通模式 (非图形界面) 下的 Vim
set termencoding=utf-8

" Use Unix as the standard file type
set ffs=unix,dos,mac

" 如遇Unicode值大于255的文本，不必等到空格再折行
set formatoptions+=m
" 合并两行中文时，不在中间加空格
set formatoptions+=B


"==========================================
" others 其它设置
"==========================================
" vimrc文件修改之后自动加载, windows
autocmd! bufwritepost _vimrc source %
" vimrc文件修改之后自动加载, linux
autocmd! bufwritepost .vimrc source %

" 自动补全配置
" 让Vim的补全菜单行为与一般IDE一致(参考VimTip1228)
set completeopt=longest,menu

" 增强模式中的命令行自动完成操作
set wildmenu
" Ignore compiled files
set wildignore=*.o,*~,*.pyc,*.class

" 离开插入模式后自动关闭预览窗口
autocmd InsertLeave * if pumvisible() == 0|pclose|endif

" 回车即选中当前项
inoremap <expr> <CR>       pumvisible() ? "\<C-y>" : "\<CR>"

" In the quickfix window, <CR> is used to jump to the error under the
" cursor, so undefine the mapping there.
autocmd BufReadPost quickfix nnoremap <buffer> <CR> <CR>
" quickfix window  s/v to open in split window,  ,gd/,jd => quickfix window => open it
autocmd BufReadPost quickfix nnoremap <buffer> v <C-w><Enter><C-w>L
autocmd BufReadPost quickfix nnoremap <buffer> s <C-w><Enter><C-w>K

" command-line window
autocmd CmdwinEnter * nnoremap <buffer> <CR> <CR>


" 上下左右键的行为 会显示其他信息
inoremap <expr> <Down>     pumvisible() ? "\<C-n>" : "\<Down>"
inoremap <expr> <Up>       pumvisible() ? "\<C-p>" : "\<Up>"
inoremap <expr> <PageDown> pumvisible() ? "\<PageDown>\<C-p>\<C-n>" : "\<PageDown>"
inoremap <expr> <PageUp>   pumvisible() ? "\<PageUp>\<C-p>\<C-n>" : "\<PageUp>"

" 打开自动定位到最后编辑的位置, 需要确认 .viminfo 当前用户可写
if has("autocmd")
  au BufReadPost * if line("'\"") > 1 && line("'\"") <= line("$") | exe "normal! g'\"" | endif
endif

"==========================================
" HotKey Settings  自定义快捷键设置
"==========================================

" 主要按键重定义

" 关闭方向键, 强迫自己用 hjkl
map <Left> <Nop>
map <Right> <Nop>
map <Up> <Nop>
map <Down> <Nop>

"Treat long lines as break lines (useful when moving around in them)
"se swap之后，同物理行上线直接跳
nnoremap k gk
nnoremap gk k
nnoremap j gj
nnoremap gj j

" F1 - F6 设置

" F1 废弃这个键,防止调出系统帮助
" I can type :help on my own, thanks.  Protect your fat fingers from the evils of <F1>
noremap <F1> <Esc>"

" F2 行号开关，用于鼠标复制代码用
" 为方便复制，用<F2>开启/关闭行号显示:
function! HideNumber()
  if(&relativenumber == &number)
    set relativenumber! number!
  elseif(&number)
    set number!
  else
    set relativenumber!
  endif
  set number?
endfunc
nnoremap <F2> :call HideNumber()<CR>
" F3 显示可打印字符开关
nnoremap <F3> :set list! list?<CR>
" F4 换行开关
nnoremap <F4> :set wrap! wrap?<CR>

" F6 语法开关，关闭语法可以加快大文件的展示
nnoremap <F6> :exec exists('syntax_on') ? 'syn off' : 'syn on'<CR>

set pastetoggle=<F5>            "    when in insert mode, press <F5> to go to
                                "    paste mode, where you can paste mass data
                                "    that won't be autoindented

" disbale paste mode when leaving insert mode
au InsertLeave * set nopaste

" F5 set paste问题已解决, 粘贴代码前不需要按F5了
" F5 粘贴模式paste_mode开关,用于有格式的代码粘贴
" Automatically set paste mode in Vim when pasting in insert mode
function! XTermPasteBegin()
  set pastetoggle=<Esc>[201~
  set paste
  return ""
endfunction
inoremap <special> <expr> <Esc>[200~ XTermPasteBegin()



" 分屏窗口移动, Smart way to move between windows
map <C-j> <C-W>j
map <C-k> <C-W>k
map <C-h> <C-W>h
map <C-l> <C-W>l


" http://stackoverflow.com/questions/13194428/is-better-way-to-zoom-windows-in-vim-than-zoomwin
" Zoom / Restore window.
function! s:ZoomToggle() abort
    if exists('t:zoomed') && t:zoomed
        execute t:zoom_winrestcmd
        let t:zoomed = 0
    else
        let t:zoom_winrestcmd = winrestcmd()
        resize
        vertical resize
        let t:zoomed = 1
    endif
endfunction
command! ZoomToggle call s:ZoomToggle()
nnoremap <silent> <Leader>z :ZoomToggle<CR>


" Go to home and end using capitalized directions
noremap H ^
noremap L $


" Map ; to : and save a million keystrokes 用于快速进入命令行
" nnoremap ; :


" 命令行模式增强，ctrl - a到行首， -e 到行尾
cnoremap <C-j> <t_kd>
cnoremap <C-k> <t_ku>
cnoremap <C-a> <Home>
cnoremap <C-e> <End>


" 搜索相关
" 进入搜索Use sane regexes"
nnoremap / /\v
vnoremap / /\v

" Keep search pattern at the center of the screen.
nnoremap <silent> n nzz
nnoremap <silent> N Nzz
nnoremap <silent> * *zz
nnoremap <silent> # #zz
nnoremap <silent> g* g*zz

" 去掉搜索高亮
noremap <silent><leader>/ :nohls<CR>

" switch # *
" nnoremap # *
" nnoremap * #

" for # indent, python文件中输入新行时#号注释不切回行首
autocmd BufNewFile,BufRead *.py inoremap # X<c-h>#


" tab/buffer相关

" 切换前后buffer
nnoremap [b :bprevious<cr>
nnoremap ]b :bnext<cr>
" 使用方向键切换buffer
noremap <left> :bp<CR>
noremap <right> :bn<CR>


" tab 操作
" http://vim.wikia.com/wiki/Alternative_tab_navigation
" http://stackoverflow.com/questions/2005214/switching-to-a-particular-tab-in-vim

" tab切换
" 上一个tab
map <leader>th :tabprev<cr>
" 下一个tab
map <leader>tl :tabnext<cr> 
" 切第1个tab
map <leader>tk :tabfirst<cr>
" 切最后一个tab
map <leader>tj :tablast<cr>
" 前一个tab(previous)
map <leader>tp :tabprev<cr>
" 后一个tab(next)
map <leader>tn :tabnext<cr>
" tabedit
map <leader>te :tabedit<cr>
" 关闭tab
map <leader>tc :tabclose<cr>
" tabm
map <leader>tm :tabm<cr>

" normal模式下切换到确切的tab
noremap <leader>1 1gt
noremap <leader>2 2gt
noremap <leader>3 3gt
noremap <leader>4 4gt
noremap <leader>5 5gt
noremap <leader>6 6gt
noremap <leader>7 7gt
noremap <leader>8 8gt
noremap <leader>9 9gt
noremap <leader>0 :tablast<cr>

" Toggles between the active and last active tab "
" The first tab is always 1 "
let g:last_active_tab = 1
" nnoremap <leader>gt :execute 'tabnext ' . g:last_active_tab<cr>
" nnoremap <silent> <c-o> :execute 'tabnext ' . g:last_active_tab<cr>
" vnoremap <silent> <c-o> :execute 'tabnext ' . g:last_active_tab<cr>
" nnoremap <silent> <leader>tt :execute 'tabnext ' . g:last_active_tab<cr>
autocmd TabLeave * let g:last_active_tab = tabpagenr()

" 新建tab  Ctrl+t
nnoremap <C-t>     :tabnew<CR>
inoremap <C-t>     <Esc>:tabnew<CR>


" => 选中及操作改键

" 调整缩进后自动选中，方便再次操作
vnoremap < <gv
vnoremap > >gv

" y$ -> Y Make Y behave like other capitals
map Y y$

" 复制选中区到系统剪切板中
vnoremap <leader>y "+y

" auto jump to end of select
" vnoremap <silent> y y`]
" vnoremap <silent> p p`]
" nnoremap <silent> p p`]

" select all
map <Leader>sa ggVG

" select block
nnoremap <leader>v V`}

" w!! to sudo & write a file
cmap w!! w !sudo tee %


" 滚动Speed up scrolling of the viewport slightly
nnoremap <C-e> 3<C-e>
nnoremap <C-y> 3<C-y>


" Quickly close the current window
nnoremap <leader>q :q<CR>

" Quickly save the current file
nnoremap <leader>w :w<CR>

" Quickly save the current file and close
nnoremap <leader>x :x<CR>

" remap U to <C-r> for easier redo
nnoremap U <C-r>

" Quickly edit/reload the vimrc file
nmap <silent> <leader>ev :e $MYVIMRC<CR>
nmap <silent> <leader>sv :so $MYVIMRC<CR>

"==========================================
" FileType Settings  文件类型设置
"==========================================

" 具体编辑文件类型的一般设置，比如不要 tab 等
autocmd FileType python set tabstop=4 shiftwidth=4 expandtab ai
autocmd FileType ruby,javascript,html,css,xml set tabstop=2 shiftwidth=2 softtabstop=2 expandtab ai
autocmd BufRead,BufNewFile *.md,*.mkd,*.markdown set filetype=markdown.mkd
autocmd BufRead,BufNewFile *.part set filetype=html
" disable showmatch when use > in php
au BufWinEnter *.php set mps-=<:>



" 保存python文件时删除多余空格
fun! <SID>StripTrailingWhitespaces()
    let l = line(".")
    let c = col(".")
    %s/\s\+$//e
    call cursor(l, c)
endfun
autocmd FileType c,cpp,java,go,php,javascript,puppet,python,rust,twig,xml,yml,perl autocmd BufWritePre <buffer> :call <SID>StripTrailingWhitespaces()


" 定义函数AutoSetFileHead，自动插入文件头
autocmd BufNewFile *.sh,*.py exec ":call AutoSetFileHead()"
function! AutoSetFileHead()
    "如果文件类型为.sh文件
    if &filetype == 'sh'
        call setline(1, "\#!/bin/bash")
    endif

    "如果文件类型为python
    if &filetype == 'python'
        call setline(1, "\#!/usr/bin/env python")
        call append(1, "\# encoding: utf-8")
    endif

    normal G
    normal o
    normal o
endfunc


" 设置可以高亮的关键字
if has("autocmd")
  " Highlight TODO, FIXME, NOTE, etc.
  if v:version > 701
    autocmd Syntax * call matchadd('Todo',  '\W\zs\(TODO\|FIXME\|CHANGED\|DONE\|XXX\|BUG\|HACK\)')
    autocmd Syntax * call matchadd('Debug', '\W\zs\(NOTE\|INFO\|IDEA\|NOTICE\)')
  endif
endif

"==========================================
" TEMP 设置, 尚未确定要不要
"==========================================

" tmux
" function! WrapForTmux(s)
"   if !exists('$TMUX')
"     return a:s
"   endif
"
"   let tmux_start = "\<Esc>Ptmux;"
"   let tmux_end = "\<Esc>\\"
"
"   return tmux_start . substitute(a:s, "\<Esc>", "\<Esc>\<Esc>", 'g') . tmux_end
" endfunction
"
" let &t_SI .= WrapForTmux("\<Esc>[?2004h")
" let &t_EI .= WrapForTmux("\<Esc>[?2004l")

" allows cursor change in tmux mode
" let &t_SI = "\<Esc>]50;CursorShape=1\x7"
" let &t_EI = "\<Esc>]50;CursorShape=0\x7"
" if exists('$TMUX')
    " let &t_SI = "\<Esc>Ptmux;\<Esc>\<Esc>]50;CursorShape=1\x7\<Esc>\\"
    " let &t_EI = "\<Esc>Ptmux;\<Esc>\<Esc>]50;CursorShape=0\x7\<Esc>\\"
" endif


"==========================================
" Theme Settings  主题设置
"==========================================

" Set extra options when running in GUI mode
if has("gui_running")
    set guifont=Monaco:h14
    if has("gui_gtk2")   "GTK2
        set guifont=Monaco\ 12,Monospace\ 12
    endif
    set guioptions-=T
    set guioptions+=e
    set guioptions-=r
    set guioptions-=L
    set guitablabel=%M\ %t
    set showtabline=1
    set linespace=2
    set noimd
    set t_Co=256
endif



" theme主题
set background=dark
set t_Co=256

" mkdir -p ~/.vim/colors/
" colorscheme solarized
" curl -SL# https://raw.githubusercontent.com/altercation/vim-colors-solarized/master/colors/solarized.vim -o ~/.vim/colors/solarized.vim
" colorscheme molokai
" curl -SL# https://raw.githubusercontent.com/tomasr/molokai/master/colors/molokai.vim -o ~/.vim/colors/molokai.vim
colorscheme desert


" 设置标记一列的背景颜色和数字一行颜色一致
hi! link SignColumn   LineNr
hi! link ShowMarksHLl DiffAdd
hi! link ShowMarksHLu DiffChange

" for error highlight，防止错误整行标红导致看不清
highlight clear SpellBad
highlight SpellBad term=standout ctermfg=1 term=underline cterm=underline
highlight clear SpellCap
highlight SpellCap term=underline cterm=underline
highlight clear SpellRare
highlight SpellRare term=underline cterm=underline
highlight clear SpellLocal
highlight SpellLocal term=underline cterm=underline


" NERDTree
" https://github.com/scrooloose/nerdtree
" curl -sL https://raw.githubusercontent.com/egalpin/apt-vim/master/install.sh | sh
" apt-vim install -y https://github.com/scrooloose/nerdtree.git
map <leader>t :NERDTreeToggle<cr>

" open NERDTree automatically when vim starts up on opening a directory
autocmd StdinReadPre * let s:std_in=1
autocmd VimEnter * if argc() == 1 && isdirectory(argv()[0]) && !exists("s:std_in") | exe 'NERDTree' argv()[0] | wincmd p | ene | exe 'cd '.argv()[0] | endif