-- Config shortcuts
local o = vim.o
local opt = vim.opt
local keymap = vim.keymap


------------------
-- GENERAL OPTIONS
------------------

-- Line numbers
o.number = true
o.relativenumber = true

-- Highlight the cursor line
o.cursorline = true

-- Amount of screen lines that should be visible above/below the cursor
o.scrolloff = 8

-- Show tabs and trailing spaces
o.list = true

-- Wrap lines at word boundaries
o.linebreak = true

-- Case insensitive search (except when explicitly using uppercase letters)
o.ignorecase = true
o.smartcase = true

-- Indentation settings
o.smartindent = true
o.expandtab = true
o.shiftwidth = 4
o.softtabstop = -1

-- Don't auto-insert comment leader when entering insert mode with o/O
vim.api.nvim_create_autocmd('FileType', {
    command = 'set formatoptions-=o',
})


-------------
-- FILE TYPES
-------------

vim.filetype.add {
    extension = {
        gitconfig = 'gitconfig',
    },
}

-- HTML formatting
vim.g.html_indent_autotags = 'html,body'
vim.g.html_indent_inctags = 'p'


-----------
-- MAPPINGS
-----------

-- For keys that are safe to be mapped, see: https://vim.fandom.com/wiki/Unused_keys

-- Exit insert mode with jk
keymap.set('i', 'jk', '<Esc>')

-- Quick exit with Ctrl-q
keymap.set('n', '<C-q>', ':q<CR>')

-- Quick save all open buffers with Ctrl-s
keymap.set('n', '<C-s>', ':wall<CR>')
keymap.set('i', '<C-s>', '<C-o>:wall<CR>')

-- Simple copy and paste to/from system clipboard with Ctrl-c in visual mode
-- and Ctrl-v in insert mode
keymap.set('v', '<C-c>', '"+y')
keymap.set('i', '<C-v>', '<C-\\><C-o>"+P')

-- Navigate between windows with Alt and hjkl
keymap.set('n', '<A-h>', '<C-w>h')
keymap.set('n', '<A-j>', '<C-w>j')
keymap.set('n', '<A-k>', '<C-w>k')
keymap.set('n', '<A-l>', '<C-w>l')

-- Resize windows with Alt and arrow keys
keymap.set('n', '<A-Up>',    '<C-w>2-')
keymap.set('n', '<A-Down>',  '<C-w>2+')
keymap.set('n', '<A-Left>',  '<C-w>4<')
keymap.set('n', '<A-Right>', '<C-w>4>')

-- Shortcuts for jumping to start of line (H) or end of line (L)
keymap.set({'n', 'x'}, 'H', '^')
keymap.set({'n', 'x'}, 'L', '$')

-- Use comma (,) as a "modifier prefix" for alternative functions of regular
-- commands (e.g. yank to system clipboard) or for random shortcuts.
-- TODO: Comma or semicolon or single quote?
keymap.set({'n', 'x'}, ',', '<Nop>')

-- Prefix yank/delete/change/paste commands with "," to use system clipboard
keymap.set({'n', 'x'}, ',y', '"+y')
keymap.set({'n', 'x'}, ',Y', '"+y$')
keymap.set({'n', 'x'}, ',d', '"+d')
keymap.set({'n', 'x'}, ',D', '"+D')
keymap.set({'n', 'x'}, ',c', '"+c')
keymap.set({'n', 'x'}, ',C', '"+C')
keymap.set({'n', 'x'}, ',p', '"+p')
keymap.set({'n', 'x'}, ',P', '"+P')

-- Insert empty line(s) below or above current line without moving the cursor
keymap.set('n', ',o', function()
    local line = vim.api.nvim_win_get_cursor(0)[1]
    local repeated = vim.fn['repeat']({''}, vim.v.count1)
    vim.api.nvim_buf_set_lines(0, line, line, true, repeated)
end)
keymap.set('n', ',O', function()
    local line = vim.api.nvim_win_get_cursor(0)[1] - 1
    local repeated = vim.fn['repeat']({''}, vim.v.count1)
    vim.api.nvim_buf_set_lines(0, line, line, true, repeated)
end)


----------
-- PLUGINS
----------

require('init.theme')
require('init.plugins')