dotfiles/nvim/lua/keymaps.lua

-- # vim:fileencoding=utf-8:foldmethod=marker

local set = vim.opt
local opt = { noremap = true }
local opts = { noremap = true, silent = true }
local term_opts = { silent = true }

local keymap = vim.keymap.set

-- {{{ Leader Key (moved to init.lua)
-- vim.g.mapleader = " " -- set <Space> as leader key
-- vim.g.maplocalleader = " " -- set <Space> as local leader key
-- }}}

-- {{{ Basic Mappings
keymap("n", ";", ":", opt)                  -- remap ; to :
keymap("n", ":", ";", opt)                  -- remap : to ;

keymap("n", "<leader>w", ":w<cr>", opts)           -- save current buffer
keymap("n", "<leader>q", ":confirm qall<cr>", opts) -- quit Neovim (prompt on unsaved changes)
keymap("n", "<leader>wq", ":wall | qa<cr>", opts)   -- save all writable buffers and quit
keymap("n", "<leader>W", ":w!<cr>", opts)          -- force save current buffer
keymap("n", "<leader>Q", ":qall!<cr>", opts)       -- force quit Neovim
keymap("n", "<leader>WQ", ":wall! | qa!<cr>", opts) -- force save all and quit
-- }}}

-- {{{ Navigation
keymap("n", "j", "gj", opts) -- move visually down wrapped lines
keymap("n", "k", "gk", opts) -- move visually up wrapped lines

-- Keep arrow key navigation (non-standard but you requested it)
keymap("n", "<Left>", "<C-w>h", opts)        -- move to left window
keymap("n", "<Right>", "<C-w>l", opts)       -- move to right window
keymap("n", "<Up>", "<C-w>k", opts)          -- move to upper window
keymap("n", "<Down>", "<C-w>j", opts)        -- move to lower window

keymap("n", "<s-l>", ":bnext<cr>", opts)     -- next buffer
keymap("n", "<s-h>", ":bprevious<cr>", opts) -- previous buffer
-- }}}

-- {{{ Window Splitting
keymap("n", "<leader>sv", ":vsplit<cr>", opts) -- split vertically
keymap("n", "<leader>sh", ":split<cr>", opts)  -- split horizontally
keymap("n", "<leader>sc", ":close<cr>", opts)  -- close current split
keymap("n", "<leader>so", ":only<cr>", opts)   -- close all other splits
-- }}}

-- {{{ Window Resizing
keymap("n", "<leader>+", ":resize +5<cr>", opts)          -- increase window height
keymap("n", "<leader>-", ":resize -5<cr>", opts)          -- decrease window height
keymap("n", "<leader><", ":vertical resize -5<cr>", opts) -- decrease window width
keymap("n", "<leader>>", ":vertical resize +5<cr>", opts) -- increase window width
keymap("n", "<leader>=", "<C-w>=", opts)                  -- equalize window sizes
-- }}}

-- {{{ Visual Mode / Text, Clipboard
keymap("v", ">", ">gv", opts)                                                -- indent right, stay in visual mode
keymap("v", "<", "<gv", opts)                                                -- indent left, stay in visual mode

keymap("x", "<s-j>", ":move '>+1<CR>gv-gv", opts)                            -- move selected block down
keymap("x", "<s-k>", ":move '<-2<CR>gv-gv", opts)                            -- move selected block up

keymap("n", "Q", "gq", opts)                                                 -- format paragraph
keymap("x", "Q", "gq", opts)                                                 -- format selection

keymap("x", "Y", '"+y', opt)                                                 -- yank to system clipboard

keymap("n", "<space><space>", [[:%s/\<<c-r>=expand("<cword>")<cr>\>/]], opt) -- replace word under cursor
-- }}}

-- {{{ Editing / Behavior
keymap("n", "q", "<nop>", opts)             -- disable q (record macro)
keymap("n", "qq", "q", opts)                -- if you really want to record macro use qq

keymap("n", "c", '"_c', opts)               -- change without yanking to default register
keymap("n", "C", '"_C', opts)               -- change line without yanking to default register

vim.keymap.set("n", "<leader>n", function() -- toggle line numbers
    if vim.wo.number and vim.wo.relativenumber then
        vim.wo.number = false
        vim.wo.relativenumber = false
    elseif vim.wo.number then
        vim.wo.relativenumber = true
    else
        vim.wo.number = true
    end
end, { desc = "Toggle line number modes" })

keymap("n", "<leader>c", ":set cursorcolumn! cursorline! <cr>", opts) -- toggle cursor column and line

keymap("n", "<esc>", ":nohlsearch<cr><esc>", opts)                    -- clear search highlight
-- }}}

-- {{{ Spellcheck
keymap("n", "<leader>se", ":setlocal spell! spelllang=en_us<cr>", opts) -- toggle English spell check
keymap("n", "<leader>sd", ":setlocal spell! spelllang=de_at<cr>", opts) -- toggle Austrian German spell check
keymap("n", "<leader>ss", ":setlocal spell! spelllang=es<cr>", opts)    -- toggle Spanish spell check
-- }}}

-- {{{ Timestamp / Date
keymap("n", "<leader>dt", [[i<c-r>=strftime("%d.%m.%Y")<cr><space>]], opts) -- insert current date
keymap("n", "<leader>tt", [[i<c-r>=strftime("%H:%M")<cr><space>]], opts)    -- insert current time
-- }}}

-- {{{ External / System
keymap("n", "<leader>x", [[:!open %<cr><cr>]], opts) -- open current file with system default app

keymap("c", "w!!", [[w !sudo tee %]], opt)           -- save file with sudo
-- }}}

-- {{{ Diff / Git
keymap("n", "<leader>gr", ":terminal git log --graph --oneline --decorate --all<CR>i", opts) -- show git log graph in terminal

-- GitSigns toggles
vim.keymap.set('n', '<leader>gt', function() require('gitsigns').toggle_signs() end, { desc = 'Toggle git signs' })
vim.keymap.set('n', '<leader>gb', function() require('gitsigns').toggle_current_line_blame() end,
    { desc = 'Toggle git blame' })
vim.keymap.set('n', '<leader>gx', function() require('gitsigns').toggle_deleted() end, { desc = 'Toggle git deleted' })
vim.keymap.set('n', '<leader>gn', function() require('gitsigns').toggle_numhl() end,
    { desc = 'Toggle git number highlights' })
vim.keymap.set('n', '<leader>gc', function() require('gitsigns').toggle_linehl() end, { desc = 'Toggle git line colors' })

-- LSP diagnostic toggle
vim.keymap.set('n', '<leader>ld', function()
    local config = vim.diagnostic.config()
    vim.diagnostic.config({
        virtual_text = not config.virtual_text,
        signs = not config.signs,
        underline = not config.underline,
    })
end, { desc = 'Toggle LSP diagnostics' })

-- Toggle fold column
vim.keymap.set("n", "<leader>un", function()
    vim.wo.foldcolumn = vim.wo.foldcolumn == "0" and "1" or "0"
end, { desc = "Toggle fold column" })

keymap("n", "<leader>si", ":source $MYVIMRC<CR>", opts) -- source init.lua ($MYVIMRC is auto path to your init.lua)
-- }}}

-- {{{ Plugins
-- mkdx checkbox toggle (disable default space key, use leader+t instead)
vim.g["mkdx#settings"] = {
    checkbox = {
        toggles = { ' ', 'x', '-' },
        toggle_key = ''
    }
}
keymap("n", "<leader>t", "<Plug>(mkdx-checkbox-next-n)", opt) -- toggle markdown checkbox
-- }}}

-- {{{ Whole Document Select
keymap("n", "<leader>a", "ggVG", opt) -- select entire document
-- }}}