-- Options
----------

vim.o.undofile = true
vim.o.backup = true
vim.cmd "set backupdir-=."

vim.o.mouse = "a"

vim.o.ignorecase = true
vim.o.smartcase = true

vim.o.smartindent = true

vim.o.tabstop = 4
vim.o.shiftwidth = 4

vim.o.inccommand = "split"

vim.o.scrolloff = 1
vim.o.sidescrolloff = 5

vim.o.colorcolumn = "80"
vim.o.cursorline = true

vim.o.title = true

vim.o.wildmode = "longest:full,full"
vim.o.completeopt = "menu,menuone,preview,noinsert,noselect"

-- Use ripgrep
vim.o.grepprg = vim.g.ripgrep_path .. " --vimgrep --smart-case"
vim.o.grepformat = "%f:%l:%c:%m," .. vim.o.grepformat

vim.o.termguicolors = true
vim.o.background = "dark"

-- Mode already shown by the status line
vim.o.showmode = false

-- Do not set "trail:-" because it messes up the highlighting
vim.o.listchars = "tab:│ ,extends:>,precedes:<,nbsp:+"
vim.wo.list = true
vim.o.fillchars = "fold:─,vert:│"

-- Leaders
----------

vim.g.maplocalleader = ","
vim.g.mapleader = ";"

-- Misc
-------

-- From neovim#14420
-- Restores the position of previously opened files
vim.cmd [[
	augroup LastCursorPos
		autocmd!
		autocmd BufReadPost * if @% !~# "\.git[\/\\]COMMIT_EDITMSG$" && line("'\"") > 1 && line("'\"") <= line("$") | exe "normal! g`\"" | endif
	augroup end
]]

-- Highlight yanked text
vim.cmd "autocmd TextYankPost * silent! lua vim.highlight.on_yank()"

vim.g.tex_flavor = "latex"

vim.cmd "colorscheme gruvbox"

-- Mappings
-----------

local map = vim.api.nvim_set_keymap
local mapopts = { noremap = true, silent = true }

vim.fn["camelcasemotion#CreateMotionMappings"] "<LocalLeader>"

map("n", "=of", [[:set <C-R>=(&formatoptions =~ "a") ? 'formatoptions-=a' : 'formatoptions+=a'<CR><CR>]], mapopts)

-- Plugins
----------

-- Gitsigns

require('gitsigns').setup {
	keymaps = {
		noremap = true,
		buffer = true,
		silent = true,

		['n ]c'] = { expr = true, "&diff ? ']c' : '<cmd>lua require\"gitsigns\".next_hunk()<CR>'"},
		['n [c'] = { expr = true, "&diff ? '[c' : '<cmd>lua require\"gitsigns\".prev_hunk()<CR>'"},

		['n <leader>hs'] = '<cmd>lua require"gitsigns".stage_hunk()<CR>',
		['n <leader>hu'] = '<cmd>lua require"gitsigns".undo_stage_hunk()<CR>',
		['n <leader>hr'] = '<cmd>lua require"gitsigns".reset_hunk()<CR>',
		['n <leader>hR'] = '<cmd>lua require"gitsigns".reset_buffer()<CR>',
		['n <leader>hp'] = '<cmd>lua require"gitsigns".preview_hunk()<CR>',
		['n <leader>hb'] = '<cmd>lua require"gitsigns".blame_line()<CR>',

		-- Text objects
		['o ih'] = ':<C-U>lua require"gitsigns".select_hunk()<CR>',
		['x ih'] = ':<C-U>lua require"gitsigns".select_hunk()<CR>',
	}
}

-- Treesitter

require('nvim-treesitter.configs').setup {
	highlight = {
		enable = true,
	},
	incremental_selection = {
		enable = true,
		keymaps = {
			init_selection = "gnn",
			node_incremental = "grn",
			scope_incremental = "grc",
			node_decremental = "grm",
		},
	},
	indent = {
		enable = true,
	},
	matchup = {
		enable = true,
	},
	textobjects = {
		select = {
			enable = true,
			keymaps = {
				-- You can use the capture groups defined in textobjects.scm
				["af"] = "@function.outer",
				["if"] = "@function.inner",
				["ac"] = "@class.outer",
				["ic"] = "@class.inner",
			},
		},

		move = {
			enable = true,
			goto_next_start = {
				["]m"] = "@function.outer",
				["]]"] = "@class.outer",
			},
			goto_next_end = {
				["]M"] = "@function.outer",
				["]["] = "@class.outer",
			},
			goto_previous_start = {
				["[m"] = "@function.outer",
				["[["] = "@class.outer",
			},
			goto_previous_end = {
				["[M"] = "@function.outer",
				["[]"] = "@class.outer",
			},
		},
	},
}

vim.o.foldmethod = 'expr'
vim.o.foldexpr = 'nvim_treesitter#foldexpr()'

-- Completion-nvim

vim.g.completion_chain_complete_list = {
	default = {
	    {
		    complete_items = { 'lsp', 'ts', 'path', 'snippet', 'buffers', 'tmux', },
		}
	},
}

vim.cmd [[autocmd BufEnter * lua require'completion'.on_attach()]]

local map = vim.api.nvim_set_keymap

vim.g.completion_enable_snippet = "snippets.nvim"

-- Telescope

map("n", "<leader>fb", "<cmd>Telescope buffers<cr>", mapopts)
map("n", "<leader>ff", "<cmd>Telescope find_files<cr>", mapopts)
map("n", "<leader>fg", "<cmd>Telescope live_grep<cr>", mapopts)
map("n", "<leader>fh", "<cmd>Telescope help_tags<cr>", mapopts)
map("n", "<leader>ft", "<cmd>Telescope treesitter<cr>", mapopts)

-- Lualine

local lsp_status = require('lsp-status')
lsp_status.config {
	indicator_errors = "err:",
	indicator_hint = "hint:",
	indicator_info = "info:",
	indicator_ok = "ok",
	indicator_warnings = "warn:",
	spinner_frames = {""},
	status_symbol = "lsp:",
}
lsp_status.register_progress()

function LspStatus()
	if #vim.lsp.buf_get_clients() < 1 then return "" end

	return lsp_status.status()
end

require("lualine").setup {
	options = {
		component_separators = "",
		icons_enabled = false,
		section_separators = "",
	},
	sections = {
		lualine_c = {'filename', LspStatus},
	},
}

-- Snippets.nvim

require("snippets").use_suggested_mappings()

-- OSCyank

-- Text yanked into the "t register gets copied using OSC52 escape sequences
-- (e.g. goes through SSH)
vim.cmd "autocmd TextYankPost * if v:event.regname is 't' | OSCYankReg t | endif"