-- https://neovim.io/doc/user/lua-guide.html
vim.opt.completeopt = { "menuone", "noinsert", "noselect" }
vim.opt.swapfile = false
vim.opt.title = true
vim.opt.virtualedit = "block"
vim.opt.whichwrap = "<,>,[,]"

-- Case character
vim.opt.ignorecase = true
vim.opt.smartcase = true

-- Line number
vim.opt.number = true
vim.opt.relativenumber = true
vim.opt.scrolloff = 4

-- Tab
vim.opt.tabstop = 4
vim.opt.shiftwidth = 4
vim.opt.expandtab = true

-- Wrap
vim.opt.breakindent = true

-- Clipboard support
vim.opt.clipboard = "unnamedplus"

-- Truecolor
if vim.env.COLORTERM == "truecolor" then
	vim.opt.termguicolors = true
end

-- Mouse support
vim.opt.mouse = "a"

-- Workaround
-- https://github.com/neovim/neovim/issues/16416
vim.keymap.set("i", "<C-c>", "<Esc>")

-- Keymap
vim.keymap.set("n", ";", "<leader>", { remap = true })
vim.keymap.set("n", "q", ":q<CR>")

-- Keymap for plugin
vim.keymap.set("n", "<leader>f", ":FZF<CR>")
vim.keymap.set("n", "<leader>rg", ":FZFRg<CR>")
vim.keymap.set("n", "<leader>cm", ":FZFCommands<CR>")
vim.keymap.set("n", "<C-n>", ":NvimTreeToggle<CR>")
vim.keymap.set("n", "<leader>n", ":NvimTreeFindFile<CR>")
vim.keymap.set("n", "<leader>tr", ":lua MiniTrailspace.trim()<CR>")

-- Use plugin fzf.vim
vim.g.fzf_command_prefix = "FZF"

-- Use plugin nvim-tree.lua
vim.g.loaded_netrw = 1
vim.g.loaded_netrwPlugin = 1

-- Use plugin neoformat
vim.g.neoformat_basic_format_trim = 1
vim.g.neoformat_enabled_go = { "gofumpt" }
vim.g.shfmt_opt = "-ci"

-- Use plugin copilot
vim.g.copilot_filetypes = {
	["*"] = false,
	c = true,
	cpp = true,
	go = true,
	java = true,
	json = true,
	lua = true,
	make = true,
	markdown = true,
	proto = true,
	python = true,
	toml = true,
	yaml = true,
}

-- https://github.com/folke/lazy.nvim
local lazypath = vim.fn.stdpath("data") .. "/lazy/lazy.nvim"
if not vim.loop.fs_stat(lazypath) then
	vim.fn.system({
		"git",
		"clone",
		"--filter=blob:none",
		"https://github.com/folke/lazy.nvim.git",
		"--branch=stable",
		lazypath,
	})
end
vim.opt.rtp:prepend(lazypath)

require("lazy").setup({
	-- Colorschemes
	-- https://github.com/catppuccin/nvim
	{
		"catppuccin/nvim",
		name = "catppuccin",
		lazy = false,
		priority = 1000,
		config = function()
			require("catppuccin").setup({
				flavour = "mocha",
				integrations = {
					mini = true,
				},
			})

			vim.cmd("colorscheme catppuccin")
		end,
	},

	-- https://github.com/junegunn/fzf.vim
	"junegunn/fzf",
	"junegunn/fzf.vim",

	-- https://github.com/nvim-lualine/lualine.nvim
	{
		"nvim-lualine/lualine.nvim",
		config = function()
			require("lualine").setup({
				options = {
					icons_enabled = false,
					theme = "auto",
					component_separators = { left = "", right = "" },
					section_separators = { left = "", right = "" },
				},
				extensions = { "fzf", "nvim-tree" },
			})

			-- Disable showmode when use lualine
			vim.opt.showmode = false
		end,
	},

	-- https://github.com/nvim-tree/nvim-tree.lua
	{
		"nvim-tree/nvim-tree.lua",
		config = function()
			require("nvim-tree").setup({
				renderer = {
					group_empty = true,
					icons = {
						show = {
							file = false,
							folder = false,
							folder_arrow = false,
							git = false,
							modified = false,
						},
					},
				},
				filters = {
					custom = {
						"^\\.git$",
						"^\\.DS_Store",
						"\\.out",
						"\\.class",
					},
				},
			})
		end,
	},

	-- https://github.com/hrsh7th/nvim-cmp
	{
		"hrsh7th/nvim-cmp",
		event = "InsertEnter",
		dependencies = {
			"neovim/nvim-lspconfig",
			"hrsh7th/cmp-nvim-lsp",
			"hrsh7th/cmp-buffer",
		},
		config = function()
			local cmp = require("cmp")
			cmp.setup({
				mapping = cmp.mapping.preset.insert({
					["<C-Space>"] = cmp.mapping.complete(),
					["<CR>"] = cmp.mapping.confirm({
						behavior = cmp.ConfirmBehavior.Replace,
						select = true,
					}),
				}),
				sources = cmp.config.sources({
					{ name = "nvim_lsp" },
				}, {
					{ name = "buffer" },
				}),
			})
		end,
	},

	-- https://github.com/lukas-reineke/indent-blankline.nvim
	{
		"lukas-reineke/indent-blankline.nvim",
		config = function()
			require("indent_blankline").setup()
		end,
	},

	-- https://github.com/lewis6991/gitsigns.nvim
	{
		"lewis6991/gitsigns.nvim",
		config = function()
			require("gitsigns").setup({
				on_attach = function(bufnr)
					local gs = package.loaded.gitsigns

					local function map(mode, l, r, opts)
						opts = opts or {}
						opts.buffer = bufnr
						vim.keymap.set(mode, l, r, opts)
					end

					-- Navigation
					map("n", "]c", function()
						if vim.wo.diff then
							return "]c"
						end
						vim.schedule(function()
							gs.next_hunk()
						end)
						return "<Ignore>"
					end, { expr = true })

					map("n", "[c", function()
						if vim.wo.diff then
							return "[c"
						end
						vim.schedule(function()
							gs.prev_hunk()
						end)
						return "<Ignore>"
					end, { expr = true })
				end,
			})
		end,
	},

	-- https://github.com/echasnovski/mini.nvim
	{
		"echasnovski/mini.nvim",
		config = function()
			-- https://github.com/echasnovski/mini.nvim/blob/main/readmes/mini-bracketed.md
			require("mini.bracketed").setup({
				comment = { suffix = "", options = {} },
			})

			-- https://github.com/echasnovski/mini.nvim/blob/main/readmes/mini-comment.md
			require("mini.comment").setup()

			-- https://github.com/echasnovski/mini.nvim/blob/main/readmes/mini-cursorword.md
			require("mini.cursorword").setup()

			-- https://github.com/echasnovski/mini.nvim/blob/main/readmes/mini-surround.md
			require("mini.surround").setup()

			-- https://github.com/echasnovski/mini.nvim/blob/main/readmes/mini-trailspace.md
			require("mini.trailspace").setup()
		end,
	},

	-- Programming languages
	-- https://github.com/sbdchd/neoformat
	"sbdchd/neoformat",

	-- https://github.com/nvim-treesitter/nvim-treesitter
	{
		"nvim-treesitter/nvim-treesitter",
		build = {
			":TSUpdate",
		},
		config = function()
			require("nvim-treesitter.configs").setup({
				ensure_installed = {
					"go",
					"json",
					"yaml",
					"toml",
					"lua",
				},
			})
		end,
	},

	-- https://github.com/nvim-treesitter/nvim-treesitter-context
	{
		"nvim-treesitter/nvim-treesitter-context",
		config = function()
			require("treesitter-context").setup({
				enable = true,
				max_lines = 2,
			})
		end,
	},

	-- https://github.com/neovim/nvim-lspconfig
	{
		"neovim/nvim-lspconfig",
		config = function()
			lspconfig = require("lspconfig")
			util = require("lspconfig/util")

			-- Go
			-- https://github.com/golang/tools/blob/master/gopls/doc/vim.md
			-- https://github.com/neovim/nvim-lspconfig/blob/master/doc/server_configurations.md#gopls
			-- https://github.com/golang/tools/blob/master/gopls/doc/settings.md
			lspconfig.gopls.setup({
				settings = {
					gopls = {
						gofumpt = true,
						semanticTokens = true,
					},
				},
			})

			-- Proto
			lspconfig.bufls.setup({})

			-- General
			vim.keymap.set("n", "[d", vim.diagnostic.goto_prev)
			vim.keymap.set("n", "]d", vim.diagnostic.goto_next)

			vim.api.nvim_create_autocmd("LspAttach", {
				group = vim.api.nvim_create_augroup("UserLspConfig", {}),
				callback = function(ev)
					vim.bo[ev.buf].omnifunc = "v:lua.vim.lsp.omnifunc"

					local opts = { buffer = ev.buf }
					vim.keymap.set("n", "gD", vim.lsp.buf.declaration, opts)
					vim.keymap.set("n", "gd", vim.lsp.buf.definition, opts)
					vim.keymap.set("n", "K", vim.lsp.buf.hover, opts)
					vim.keymap.set("n", "gi", vim.lsp.buf.implementation, opts)
					vim.keymap.set("n", "<space>D", vim.lsp.buf.type_definition, opts)
					vim.keymap.set("n", "<space>rn", vim.lsp.buf.rename, opts)
					vim.keymap.set("n", "<F2>", vim.lsp.buf.rename, opts)
					vim.keymap.set({ "n", "v" }, "<space>ca", vim.lsp.buf.code_action, opts)
					vim.keymap.set("n", "gr", vim.lsp.buf.references, opts)
					vim.keymap.set("n", "<space>f", function()
						vim.lsp.buf.format({ async = true })
					end, opts)
				end,
			})
		end,
	},

	-- https://github.com/github/copilot.vim
	"github/copilot.vim",
})