dotfiles/nvim/after/plugin/lsp.lua

require("neodev").setup({
    library = { plugins = { "nvim-dap-ui" }, types = true }
})


local lsp = require("lsp-zero")
-- lsp.preset("recommended")




-- use csharp_ls language server("https://github.com/razzmatazz/csharp-language-server")
-- i'm using this instead of Mason because the version of it is old in Mason,
-- the version here is maintained by dotnet tool and it's the latest
-- lsp.configure('csharp_ls', {
--     force_setup = true
-- })

lsp.configure('clangd', {
    cmd = { 'clangd', '--offset-encoding=utf-16' },
})
--
-- -- Fix Undefined global 'vim'
-- lsp.configure('lua-language-server', {
--     settings = {
--         Lua = {
--             diagnostics = {
--                 globals = { 'vim' }
--             }
--         }
--     }
-- })

-- this code makes it so that the css language server doesn't complain about tailwindcss classes
lsp.configure("cssls", {
    settings = {
        css = {
            lint = { unknownAtRules = "ignore" }
        },
        scss = {
            lint = { unknownAtRules = "ignore" }
        },
        less = {
            lint = { unknownAtRules = "ignore" }
        }
    }
})

lsp.set_server_config({
  capabilities = {
    textDocument = {
      foldingRange = {
        dynamicRegistration = false,
        lineFoldingOnly = true
      }
    }
  }
})


local cmp = require('cmp')
local cmp_action = lsp.cmp_action()
local cmp_format = lsp.cmp_format()

require('luasnip.loaders.from_vscode').lazy_load()

vim.opt.completeopt = {'menu', 'menuone', 'noselect'}

cmp.setup({
  formatting = cmp_format,
  preselect = 'item',
  completion = {
    completeopt = 'menu,menuone,noinsert'
  },
  window = {
    documentation = cmp.config.window.bordered(),
  },
  sources = {
    {name = 'path'},
    {name = 'nvim_lsp'},
    {name = 'nvim_lua'},
    {name = 'buffer', keyword_length = 3},
    {name = 'luasnip', keyword_length = 2},
  },
  mapping = cmp.mapping.preset.insert({
    -- confirm completion item
    ['<CR>'] = cmp.mapping.confirm({select = false, behavior = cmp.ConfirmBehavior.Insert}),
    ['<Tab>'] = cmp.mapping.confirm({select = false, behavior = cmp.ConfirmBehavior.Replace}),

    -- toggle completion menu
    ['<C-e>'] = cmp_action.toggle_completion(),

    -- tab complete
    -- ['<Tab>'] = cmp_action.tab_complete(),
    ['<S-Tab>'] = cmp.mapping.select_prev_item(),

    -- navigate between snippet placeholder
    ['<C-d>'] = cmp_action.luasnip_jump_forward(),
    ['<C-b>'] = cmp_action.luasnip_jump_backward(),

    -- scroll documentation window
    ['<C-f>'] = cmp.mapping.scroll_docs(5),
    ['<C-u>'] = cmp.mapping.scroll_docs(-5),
  }),
})


local navic = require("nvim-navic")

lsp.on_attach(function(client, bufnr)
    local opts = { buffer = bufnr, remap = false }
    lsp.default_keymaps({buffer = bufnr})
    if client.server_capabilities.documentSymbolProvider then
        navic.attach(client, bufnr)
    end
    vim.keymap.set("n", "gd", function() vim.lsp.buf.definition() end, opts)
    vim.keymap.set("n", "<leader>dc", function() vim.lsp.buf.hover() end, opts)
    vim.keymap.set("n", "<leader>vws", function() vim.lsp.buf.workspace_symbol() end, opts)
    vim.keymap.set("n", "<leader>ed", function() vim.diagnostic.open_float() end, opts)
    vim.keymap.set("n", "[d", function() vim.diagnostic.goto_next() end, opts)
    vim.keymap.set("n", "]d", function() vim.diagnostic.goto_prev() end, opts)
    -- for the code action key map to work you need to change key binding('.' symbol) of your terminal, otherwise it won't work
    vim.keymap.set("n", "<C-.>", function() vim.lsp.buf.code_action() end, opts)
    vim.keymap.set("n", "<leader>vrr", function() vim.lsp.buf.references() end, opts)
    vim.keymap.set("n", "<leader>vrn", function() vim.lsp.buf.rename() end, opts)
    vim.keymap.set("i", "<C-h>", function() vim.lsp.buf.signature_help() end, opts)
    -- sometimes lsp fails, we can restart it with this keymap
    vim.keymap.set('n', "<leader>lr", vim.cmd.LspRestart, opts)
end)

require("mason").setup({});
require("mason-lspconfig").setup({
    ensure_installed = {'tsserver', 'tailwindcss', 'svelte', 'lua_ls'},
    handlers = {
        lsp.default_setup,
        lua_ls = function()
            local lua_opts = lsp.nvim_lua_ls()
            require('lspconfig').lua_ls.setup(lua_opts)
        end,
    }
})


lsp.set_sign_icons({
  error = '✘',
  warn = '▲',
  hint = '⚑',
  info = ''
})

vim.diagnostic.config({
  virtual_text = false,
  severity_sort = true,
  float = {
    style = 'minimal',
    border = 'rounded',
    source = 'always',
    header = '',
    prefix = '',
  },
})

-- because we want to add another source, the ones that are set by lsp-zero will be lost,
-- we need to add them again together with the new one