local capabilities = vim.lsp.protocol.make_client_capabilities()
capabilities = require('cmp_nvim_lsp').update_capabilities(capabilities)
local lsp_installer = require "nvim-lsp-installer"


-- Mappings.
-- See `:help vim.diagnostic.*` for documentation on any of the below functions
local keyOpts = { noremap = true, silent = true }
-- vim.api.nvim_set_option('omnifunc', 'v:lua.vim.lsp.omnifunc')
vim.api.nvim_set_keymap('n', '<C-]>', '<cmd>lua vim.lsp.buf.definition()<CR>', keyOpts)
vim.api.nvim_set_keymap('n', '<space>f', '<cmd>lua vim.lsp.buf.formatting()<CR>', keyOpts)
vim.api.nvim_set_keymap('n', 'gi', '<cmd>lua vim.lsp.buf.implementation()<CR>', keyOpts)
vim.api.nvim_set_keymap('n', 'e[', '<cmd>lua vim.diagnostic.goto_prev()<CR>',keyOpts)
vim.api.nvim_set_keymap('n', 'e]', '<cmd>lua vim.diagnostic.goto_next()<CR>', keyOpts)



-- 安装列表
-- https://github.com/williamboman/nvim-lsp-installer#available-lsps
-- { key: 语言 value: 配置文件 }
-- pyright 不支持autoformat
local servers = {
	sumneko_lua = require "lsp.lua", -- /lua/lsp/lua.lua
	gopls = require "lsp.base",
	volar = require "lsp.base",
	basels = require "lsp.base",
	cssls = require "lsp.base",
	eslint = require "lsp.eslint",
	tsserver = require "lsp.base",
	prosemd_lsp = require "lsp.base",
	pyright = require "lsp.base",
	rust_analyzer = require "lsp.base",
	tailwindcss = require "lsp.base",
	efm = require "lsp.efm"
}

-- 自动安装 LanguageServers
for name, _ in pairs(servers) do
	local server_is_found, server = lsp_installer.get_server(name)
	if server_is_found then
		if not server:is_installed() then
			print("Installing " .. name)
			server:install()
		end
	end
end

lsp_installer.on_server_ready(function(server)
	local opts = servers[server.name]
	opts.capabilities = capabilities
	opts.flags = {
		debounce_text_changes = 150,
	}
	server:setup(opts)
end)

-- luasnip setup
local luasnip = require 'luasnip'

local cmp_autopairs = require('nvim-autopairs.completion.cmp')
require('nvim-ts-autotag').setup()

-- nvim-cmp setup
local cmp = require 'cmp'
cmp.event:on('confirm_done', cmp_autopairs.on_confirm_done({ map_char = { tex = '' } }))

cmp.setup {
	snippet = {
		expand = function(args)
			luasnip.lsp_expand(args.body)
		end,
	},
	mapping = cmp.mapping.preset.insert({
		['<C-d>'] = cmp.mapping.scroll_docs(-4),
		['<C-f>'] = cmp.mapping.scroll_docs(4),
		['<C-Space>'] = cmp.mapping.complete(),
		['<CR>'] = cmp.mapping.confirm {
			behavior = cmp.ConfirmBehavior.Replace,
			select = true,
		},
		['<Tab>'] = cmp.mapping(function(fallback)
			if cmp.visible() then
				cmp.select_next_item()
			elseif luasnip.expand_or_jumpable() then
				luasnip.expand_or_jump()
			else
				fallback()
			end
		end, { 'i', 's' }),
		['<S-Tab>'] = cmp.mapping(function(fallback)
			if cmp.visible() then
				cmp.select_prev_item()
			elseif luasnip.jumpable(-1) then
				luasnip.jump(-1)
			else
				fallback()
			end
		end, { 'i', 's' }),
	}),
	sources = {
		{ name = 'nvim_lsp' },
		{ name = 'luasnip' },
		{ name = 'buffer' },
		{ name = 'path' }
	},
}