--set some aliases to make typing this faster.
local cmd=vim.cmd
local opt=vim.opt
local fn=vim.fn
local map=vim.api.nvim_set_keymap

--leader key is set through a variable, for some reason.
vim.g.mapleader = ';'

--this plugin makes startup time a bit faster. To bootsrap configuration, you need to comment this one out, ignore any errors you get, do packersync, then uncomment it.
require('impatient')
--do package management
require('packages')

--helper functions
	local function keyCode(string)
		return vim.api.nvim_replace_termcodes(str, true, true, true, true)
	end

--options using vim.opt (aliased, of course.)
	opt.mouse='a'
	opt.lazyredraw=true
	opt.termguicolors=true
	opt.autoread=true
	opt.swapfile=false
	opt.history=500
	opt.formatoptions='rojq'
	--disable hard text wrapping, will only wrap visually.
	opt.textwidth=0
	opt.wrapmargin=0
	opt.wrap=true
	opt.linebreak=true
	opt.breakindent=true
	--add ruler to side of screen.
	opt.number=true
	--displays cordinates of your cursor in statusbar
	opt.ruler=true
	--always leave 5 cells between cursor and side of window.
	opt.scrolloff=5
	opt.sidescrolloff=5
	--better command line completion
	opt.wildmenu=true
	--ignore case in search if search is all lowercase.
	opt.ignorecase=true
	opt.smartcase=true
	--show unfinished commands in statusbar.
	opt.showcmd=true
	--regex stuff
	opt.magic=true
	--always have a status line
	opt.laststatus=2
	--tab stuff
	opt.tabstop=4
	opt.shiftwidth=0 --zero inherrits tabstop.
	opt.autoindent=true
	opt.smartindent=true
	opt.smarttab=true
	--space based tabs.
	-- opt.softtabstop=-1 --negative value inherrits shiftwidth.
	-- opt.expandtab=true
	--highlight search results as you type.
	opt.hlsearch=true
	opt.incsearch=true
	--foling stuff
	opt.foldlevelstart=5
	cmd([[source ~/.config/nvim/foldtext.vimrc]])
	opt.foldmethod='indent'
	opt.foldtext='minimal_foldtext()'
	opt.fillchars='stl:=,stlnc: ,vert:|,fold:-'
	opt.foldcolumn='4'
	opt.foldenable=true
	opt.foldignore=''

--sets colorscheme. to get a list of avalible options, do colorscheme <Space> <C-d>
vim.cmd 'colorscheme moonfly'

--function for venn.nvim
-- venn.nvim: enable or disable keymappings
function _G.Toggle_venn()
    local venn_enabled = vim.inspect(vim.b.venn_enabled)
    if venn_enabled == "nil" then
        vim.b.venn_enabled = true
        vim.cmd[[setlocal ve=all]]
        -- draw a line on HJKL keystokes
        vim.api.nvim_buf_set_keymap(0, "n", "J", "<C-v>j:VBox<CR>", {noremap = true})
        vim.api.nvim_buf_set_keymap(0, "n", "K", "<C-v>k:VBox<CR>", {noremap = true})
        vim.api.nvim_buf_set_keymap(0, "n", "L", "<C-v>l:VBox<CR>", {noremap = true})
        vim.api.nvim_buf_set_keymap(0, "n", "H", "<C-v>h:VBox<CR>", {noremap = true})
        -- draw a box by pressing "f" with visual selection
        vim.api.nvim_buf_set_keymap(0, "v", "f", ":VBox<CR>", {noremap = true})
    else
        vim.cmd[[setlocal ve=]]
        vim.cmd[[mapclear <buffer>]]
        vim.b.venn_enabled = nil
    end
end

--keyboard mappings
	local opts = { noremap=true, silent=true }
	--toggle spell check
	map('n', '<leader>sp', ':setlocal spell!<CR>', opts)
	--[[ --easily create splits
	map('n', '<leader>|', ':vs<CR>', opts) ]]
	--[[ map('n', '<leader>-', ':sp<CR>', opts)
	--use ctrl+direction to move between splits. ]]
	map('n', '<C-h>', '<C-w>h', opts)
	map('n', '<C-j>', '<C-w>j', opts)
	map('n', '<C-k>', '<C-w>k', opts)
	map('n', '<C-l>', '<C-w>l', opts)
	--toggle folds with space.
	map('', '<Space>', 'za', opts)
	--clear highlighting with leader+h
	map('', '<leader>h', ':nohls<CR>', opts)
	--open nvim-tree with leader+t
	map('n', '<leader>t', ':NvimTreeToggle<CR>', opts)
	--open symbols-outline with leader+o
	map('n', '<leader>o', ':SymbolsOutline<CR>', opts)
	--telescope stuff
	map('n', '<leader>ff', ':lua require "telescope".extensions.file_browser.file_browser()<CR>', opts)
	map('n', '<leader>fg', ':Telescope live_grep<CR>', opts)
	map('n', '<leader>fb', ':Telescope buffers<CR>', opts)
	map('n', '<leader>fm', ':Telescope marks<CR>', opts)
	map('n', '<leader>fp', ':Telescope registers<CR>', opts)
	map('n', '<leader>fs', ':Telescope spell_suggest<CR>', opts)
	map('n', '<leader>fh', ':Telescope keymaps<CR>', opts)
	map('n', '<leader>fz', ':Telescope current_buffer_fuzzy_find<CR>', opts)
	map('n', '<leader>fgc', ':Telescope git_commits<CR>', opts)
	map('n', '<leader>fgb', ':Telescope git_branches<CR>', opts)
	map('n', '<leader>fgs', ':Telescope git_stash<CR>', opts)
	map('n', '<leader>ft', ':Telescope treesitter<CR>', opts)
	--Treesitter context
	map('n', '<leader>c', ':TSContextToggle<CR>', opts)
	--tabline stuff (gt and gT are prev/next tab in stock vim)
	map('n', 'gf', ':TablineBufferNext<CR>', opts)
	map('n', 'gF', ':TablineBufferPrevious<CR>', opts)
	--gitsigns
	map('n', '<leader>bl', ':Gitsigns toggle_current_line_blame<CR>', opts)
	--trouble plugin.
	vim.keymap.set("n", "<leader>xx", "<cmd>TroubleToggle<cr>", opts)
	vim.keymap.set("n", "<leader>xw", "<cmd>TroubleToggle workspace_diagnostics<cr>", opts)
	vim.keymap.set("n", "<leader>xd", "<cmd>TroubleToggle document_diagnostics<cr>", opts)
	vim.keymap.set("n", "<leader>xl", "<cmd>TroubleToggle loclist<cr>", opts)
	vim.keymap.set("n", "<leader>xq", "<cmd>TroubleToggle quickfix<cr>", opts)
	vim.keymap.set("n", "<leader>lR", "<cmd>TroubleToggle lsp_references<cr>", opts)
	vim.keymap.set("n", "<leader>lD", "<cmd>TroubleToggle lsp_definitions<cr>", opts)
	-- toggle keymappings for venn using <leader>v
	vim.api.nvim_set_keymap('n', '<leader>v', ":lua Toggle_venn()<CR>", { noremap = true})