--[[
lvim is the global options object

Linters should be
filled in as strings with either
a global executable or a path to
an executable
]]
-- THESE ARE EXAMPLE CONFIGS FEEL FREE TO CHANGE TO WHATEVER YOU WANT

-- vim.cmd [[set nomodeline]]
-- vim.cmd [[set modelines=0]]
user = vim.fn.expand('$USER')

-- general
lvim.log.level = "warning"
lvim.format_on_save = false
lvim.colorscheme = "tokyonight"
vim.lsp.set_log_level("debug")

local tables = { "clangd" }
vim.list_extend(lvim.lsp.automatic_configuration.skipped_servers, tables, 1, #tables)
vim.list_extend(lvim.lsp.override, tables, 1, #tables)

local clangd_bin = "clangd"
local clangd_flags = {
	"--query-driver=/usr/bin/g++-12",
	"--background-index", "--pch-storage=memory", "-j=4", "--log=verbose",
	-- "--path-mappings=/from=/to",
}


-- Example
local custom_on_attach = function(client, bufnr)
	require("lvim.lsp").common_on_attach(client, bufnr)
	local opts = { noremap = true, silent = true }
	vim.api.nvim_buf_set_keymap(bufnr, "n", "gD", "<cmd>lua vim.lsp.buf.declaration()<CR>", opts)
	vim.api.nvim_buf_set_keymap(bufnr, "n", "gd", "<cmd>lua vim.lsp.buf.definition()<CR>", opts)
	vim.api.nvim_buf_set_keymap(bufnr, "n", "K", "<cmd>lua vim.lsp.buf.hover()<CR>", opts)
	vim.api.nvim_buf_set_keymap(bufnr, "n", "gi", "<cmd>lua vim.lsp.buf.implementation()<CR>", opts)
	vim.api.nvim_buf_set_keymap(bufnr, "n", "<C-k>", "<cmd>lua vim.lsp.buf.signature_help()<CR>", opts)
	vim.api.nvim_buf_set_keymap(bufnr, "n", "gr", "<cmd>lua vim.lsp.buf.references()<CR>", opts)
	vim.api.nvim_buf_set_keymap(bufnr, "n", "<leader>lh", "<Cmd>ClangdSwitchSourceHeader<CR>", opts)
	vim.api.nvim_buf_create_user_command(bufnr, 'FormatRegion', function(_opts)
		local format_opts = { async = false}

		if _opts.range > 0 then
			format_opts.range = {
				{ _opts.line1, 0 },
				{ _opts.line2, 0 },
			}
		end
		vim.lsp.buf.format(format_opts)

	end, { range = true })

end

local opts = {
	cmd = { clangd_bin, unpack(clangd_flags) },
	on_attach = custom_on_attach,
}

require("lvim.lsp.manager").setup("clangd", opts)
-- keymappings [view all the defaults by pressing <leader>Lk]
lvim.leader = "space"
lvim.keys.normal_mode["<C-s>"] = ":w<cr>"

lvim.builtin.terminal.open_mapping = [[<c-t>]]
lvim.builtin.terminal.direction = "horizontal"

local keymap_opts = { noremap = true, silent = true }
vim.api.nvim_set_keymap("v", "p", '"_dP', keymap_opts)
-- unmap a default keymapping
-- lvim.keys.normal_mode["<C-Up>"] = false
-- edit a default keymapping
-- lvim.keys.normal_mode["<C-q>"] = ":q<cr>"

-- Change Telescope navigation to use j and k for navigation and n and p for history in both input and normal mode.
-- we use protected-mode (pcall) just in case the plugin wasn't loaded yet.
-- local _, actions = pcall(require, "telescope.actions")
-- lvim.builtin.telescope.defaults.mappings = {
--   -- for input mode
--   i = {
--     ["<C-j>"] = actions.move_selection_next,
--     ["<C-k>"] = actions.move_selection_previous,
--     ["<C-n>"] = actions.cycle_history_next,
--     ["<C-p>"] = actions.cycle_history_prev,
--   },
--   -- for normal mode
--   n = {
--     ["<C-j>"] = actions.move_selection_next,
--     ["<C-k>"] = actions.move_selection_previous,
--   },
-- }

lvim.builtin.which_key.mappings["G"] = {
	"<cmd>Glow<cr>", "Markdown Preview"
}


lvim.builtin.which_key.vmappings["f"] = {
	"<cmd>FormatRegion<cr>", "Format Region",
}
-- Telescope
lvim.builtin.which_key.mappings["f"] = {
	name = "+Finder",
	f = { "<cmd>Telescope find_files<cr>", "Find files" },
	g = { "<cmd>Telescope live_grep<cr>", "Live Grep" }
}

lvim.builtin.which_key.mappings["t"] = {
	name = "+Trouble",
	r = { "<cmd>Trouble lsp_references<cr>", "References" },
	f = { "<cmd>Trouble lsp_definitions<cr>", "Definitions" },
	d = { "<cmd>Trouble document_diagnostics<cr>", "Diagnostics" },
	q = { "<cmd>Trouble quickfix<cr>", "QuickFix" },
	l = { "<cmd>Trouble loclist<cr>", "LocationList" },
	w = { "<cmd>Trouble workspace_diagnostics<cr>", "Wordspace Diagnostics" },
}

lvim.builtin.which_key.mappings["w"] = {
	name = "+Window",
	["<left>"] = { "<C-w>h", "Jump to Left Buffer" },
	["<down>"] = { "<C-w>j", "Jump to Below Buffer" },
	["<up>"] = { "<C-w>k", "Jump to Above Buffer" },
	["<right>"] = { "<C-w>l", "Jump to Right Buffer" },
	h = { ":bprevious<CR>", "Previous buffer tab" },
	l = { ":bnext<CR>", "Next buffer tab" },
	x = { "<cmd>BufferKill<CR>", "Close Buffer" }
}

-- TODO: User Config for predefined plugins
-- After changing plugin config exit and reopen LunarVim, Run :PackerInstall :PackerCompile
lvim.builtin.alpha.active = true
lvim.builtin.alpha.mode = "dashboard"
lvim.builtin.bufferline.options.close_command = ":BufDel %d"
lvim.builtin.terminal.active = true
lvim.builtin.nvimtree.setup.view.side = "left"
-- lvim.builtin.nvimtree.show_icons.git = 0

-- if you don't want all the parsers change this to a table of the ones you want
lvim.builtin.treesitter.ensure_installed = {
	"bash",
	"c",
	"cpp",
	"lua",
	"python",
	"rust",
	"yaml"
}

lvim.builtin.treesitter.ignore_install = { "haskell" }
lvim.builtin.treesitter.highlight.enabled = true
lvim.builtin.treesitter.rainbow.enable = true
lvim.builtin.treesitter.indent = false

lvim.lsp.diagnostics.virtual_text = false


-- generic LSP settings

-- ---@usage disable automatic installation of servers
-- lvim.lsp.automatic_servers_installation = false

-- ---@usage Select which servers should be configured manually. Requires `:LvimCacheReset` to take effect.
-- See the full default list `:lua print(vim.inspect(lvim.lsp.override))`
-- vim.list_extend(lvim.lsp.override, { "pylsp" })

-- ---@usage setup a server -- see: https://www.lunarvim.org/languages/#overriding-the-default-configuration
-- local opts = {} -- check the lspconfig documentation for a list of all possible options
-- require("lvim.lsp.manager").setup("pylsp", opts)

-- -- you can set a custom on_attach function that will be used for all the language servers
-- -- See <https://github.com/neovim/nvim-lspconfig#keybindings-and-completion>
-- lvim.lsp.on_attach_callback = function(client, bufnr)
--   local function buf_set_option(...)
--     vim.api.nvim_buf_set_option(bufnr, ...)
--   end
--   --Enable completion triggered by <c-x><c-o>
--   buf_set_option("omnifunc", "v:lua.vim.lsp.omnifunc")
-- end

-- -- set a formatter, this will override the language server formatting capabilities (if it exists)
-- local formatters = require "lvim.lsp.null-ls.formatters"
-- formatters.setup {
--   { command = "black", filetypes = { "python" } },
--   { command = "isort", filetypes = { "python" } },
--   {
--     -- each formatter accepts a list of options identical to https://github.com/jose-elias-alvarez/null-ls.nvim/blob/main/doc/BUILTINS.md#Configuration
--     command = "prettier",
--     ---@usage arguments to pass to the formatter
--     -- these cannot contain whitespaces, options such as `--line-width 80` become either `{'--line-width', '80'}` or `{'--line-width=80'}`
--     extra_args = { "--print-with", "100" },
--     ---@usage specify which filetypes to enable. By default a providers will attach to all the filetypes it supports.
--     filetypes = { "typescript", "typescriptreact" },
--   },
-- }

-- -- set additional linters
-- local linters = require "lvim.lsp.null-ls.linters"
-- linters.setup {
--   { command = "flake8", filetypes = { "python" } },
--   {
--     -- each linter accepts a list of options identical to https://github.com/jose-elias-alvarez/null-ls.nvim/blob/main/doc/BUILTINS.md#Configuration
--     command = "shellcheck",
--     ---@usage arguments to pass to the formatter
--     -- these cannot contain whitespaces, options such as `--line-width 80` become either `{'--line-width', '80'}` or `{'--line-width=80'}`
--     extra_args = { "--severity", "warning" },
--   },
--   {
--     command = "codespell",
--     ---@usage specify which filetypes to enable. By default a providers will attach to all the filetypes it supports.
--     filetypes = { "javascript", "python" },
--   },
-- }


-- Additional Plugins
lvim.plugins = {
	{ "p00f/nvim-ts-rainbow" },
	{
		"folke/trouble.nvim",
		cmd = "TroubleToggle",
	},
	{
		"sindrets/diffview.nvim",
		requires = "nvim-lua/plenary.nvim",
	},
}

-- lvim.plugins = {
--     {"folke/tokyonight.nvim"},
--     {
--       "folke/trouble.nvim",
--       cmd = "TroubleToggle",
--     },
-- }

-- Autocommands (https://neovim.io/doc/user/autocmd.html)
-- lvim.autocommands.custom_groups = {
--   { "BufWinEnter", "*.lua", "setlocal ts=8 sw=8" },
-- }

local options = {
	backup = true, -- creates a backup file
	clipboard = "unnamedplus", -- allows neovim to access the system clipboard
	cmdheight = 2, -- more space in the neovim command line for displaying messages
	completeopt = { "menuone", "noselect" }, -- mostly just for cmp
	conceallevel = 0, -- so that `` is visible in markdown files
	fileencoding = "utf-8", -- the encoding written to a file
	hlsearch = true, -- highlight all matches on previous search pattern
	ignorecase = true, -- ignore case in search patterns
	mouse = "a", -- allow the mouse to be used in neovim
	pumheight = 10, -- pop up menu height
	showmode = false, -- we don't need to see things like -- INSERT -- anymore
	showtabline = 2, -- always show tabs
	smartcase = true, -- smart case
	smartindent = false, -- make indenting smarter again
	splitbelow = true, -- force all horizontal splits to go below current window
	splitright = true, -- force all vertical splits to go to the right of current window
	swapfile = true, -- creates a swapfile
	termguicolors = true, -- set term gui colors (most terminals support this)
	timeoutlen = 1000, -- time to wait for a mapped sequence to complete (in milliseconds)
	undofile = true, -- enable persistent undo
	updatetime = 300, -- faster completion (4000ms default)
	writebackup = false, -- if a file is being edited by another program (or was written to file while editing with another program), it is not allowed to be edited
	expandtab = false, -- convert tabs to spaces
	shiftwidth = 4, -- the number of spaces inserted for each indentation
	tabstop = 4, -- insert 2 spaces for a tab
	cursorline = true, -- highlight the current line
	number = true, -- set numbered lines
	relativenumber = false, -- set relative numbered lines
	numberwidth = 4, -- set number column width to 2 {default 4}
	signcolumn = "yes", -- always show the sign column, otherwise it would shift the text each time
	wrap = false, -- display lines as one long line
	scrolloff = 8, -- is one of my fav
	sidescrolloff = 8,
	guifont = "monospace:h17", -- the font used in graphical neovim applications
	backupdir = "/home/" .. user .. "/.vim/backup//",
	directory = "/home/" .. user .. "/.vim/swap//",
}

for k, v in pairs(options) do
	vim.opt[k] = v
end



vim.cmd [[ 
augroup RestoreCursorShapeOnExit
    autocmd!
    autocmd VimSuspend,VimLeave * set guicursor=a:ver50
augroup END]]

vim.cmd [[
	augroup Markdown
	  autocmd!
	  autocmd FileType markdown setlocal wrap shiftwidth=2 tabstop=2
	augroup END
]]

vim.cmd [[
	augroup Lua
	  autocmd!
	  autocmd FileType lua setlocal shiftwidth=2 tabstop=2
	augroup END
]]

-- vim.opt.cinoptions:append("=0")