" ============================================
" 基础设置
" ============================================
set number              " 显示行号
set relativenumber      " 显示相对行号
set expandtab           " 使用空格替代制表符
set tabstop=4           " 制表符宽度为4
set shiftwidth=4         " 缩进宽度为4
set smartindent         " 智能缩进
set autoindent          " 自动缩进
set wrap               " 自动换行
set showcmd            " 显示命令
set wildmenu           " 命令行补全
set hlsearch            " 高亮搜索结果
set incsearch           " 增量搜索
set ignorecase         " 忽略大小写搜索
set smartcase          " 智能大小写

" ============================================
" 界面设置
" ============================================
set background=dark     " 设置深色主题
syntax on              " 语法高亮
set cursorline          " 高亮当前行
set showmatch          " 显示匹配的括号
set ruler              " 显示光标位置
set laststatus=2        " 始终显示状态栏
set termguicolors       " 启用真彩色
                    

" ============================================
" 快捷键映射
" ============================================
let mapleader=","      " 设置leader键为逗号

" 分屏快捷键
nmap <leader>sv :split<CR>          " 水平分屏
nmap <leader>sh :vsplit<CR>         " 垂直分屏
nmap <C-w><C-w> :wincmd w<CR>      " 在窗口间切换

" 快速保存和退出
nmap <leader>w :w<CR>
nmap <leader>q :q<CR>
nmap <leader>x :x<CR>

" 清除搜索高亮
nmap <leader>h :nohl<CR>

" 缓冲区导航
nmap <leader>l :bnext<CR>
nmap <leader>k :bprev<CR>

" 快速移动
nmap J 5j
nmap K 5k

" 插入模式下快速移动
imap <C-h> <Left>
imap <C-j> <Down>
imap <C-k> <Up>
imap <C-l> <Right>
                    

" ============================================
" 高级配置
" ============================================

" 备份和撤销设置
set backup              " 启用备份
set backupdir=~/.vim/backup " 备份目录
set directory=~/.vim/tmp   " 临时文件目录
set undofile            " 启用持久撤销
set undodir=~/.vim/undo " 撤销文件目录

" 自动命令
autocmd BufWritePre *.html :%s/\s\+$//e
autocmd BufWritePre *.js :%s/\s\+$//e
autocmd BufWritePre *.py :%s/\s\+$//e

" 文件类型特定设置
autocmd FileType python setlocal tabstop=4 shiftwidth=4
autocmd FileType javascript setlocal tabstop=2 shiftwidth=2
autocmd FileType html setlocal tabstop=2 shiftwidth=2

" 自定义函数
function! SmartTab()
    if strpart(getline('.'), 0, col('.') - 1) =~ '^\s*$'
        return "\"
    else
        return "\"
    endif
endfunction

inoremap  =SmartTab()

" 性能优化
set lazyredraw          " 延迟重绘
set updatetime=300      " 更新时间
set timeoutlen=500       " 超时时间
set ttimeoutlen=50       " 键码超时时间