-- LSP Configuration
return {
  {
    -- Lua LSP for Neovim config
    'folke/lazydev.nvim',
    ft = 'lua',
    opts = {
      library = {
        { path = '${3rd}/luv/library', words = { 'vim%.uv' } },
      },
    },
  },
  {
    -- Main LSP Configuration
    'neovim/nvim-lspconfig',
    dependencies = {
      { 'mason-org/mason.nvim', opts = {} },
      'mason-org/mason-lspconfig.nvim',
      'WhoIsSethDaniel/mason-tool-installer.nvim',
      { 'j-hui/fidget.nvim', opts = {} },
      'saghen/blink.cmp',
    },
    config = function()
      -- LSP attach autocmd for keymaps and features
      vim.api.nvim_create_autocmd('LspAttach', {
        group = vim.api.nvim_create_augroup('kickstart-lsp-attach', { clear = true }),
        callback = function(event)
          local map = function(keys, func, desc, mode)
            mode = mode or 'n'
            vim.keymap.set(mode, keys, func, { buffer = event.buf, desc = 'LSP: ' .. desc })
          end

          -- LSP keymaps
          map('grn', vim.lsp.buf.rename, '[R]e[n]ame')
          map('gra', vim.lsp.buf.code_action, '[G]oto Code [A]ction', { 'n', 'x' })
          map('grr', require('telescope.builtin').lsp_references, '[G]oto [R]eferences')
          map('gri', require('telescope.builtin').lsp_implementations, '[G]oto [I]mplementation')
          map('grd', require('telescope.builtin').lsp_definitions, '[G]oto [D]efinition')
          map('grD', vim.lsp.buf.declaration, '[G]oto [D]eclaration')
          map('gO', require('telescope.builtin').lsp_document_symbols, 'Open Document Symbols')
          map('gW', require('telescope.builtin').lsp_dynamic_workspace_symbols, 'Open Workspace Symbols')
          map('grt', require('telescope.builtin').lsp_type_definitions, '[G]oto [T]ype Definition')

          -- Helper function for method support check
          local function client_supports_method(client, method, bufnr)
            if vim.fn.has 'nvim-0.11' == 1 then
              return client:supports_method(method, bufnr)
            else
              return client.supports_method(method, { bufnr = bufnr })
            end
          end

          -- Document highlighting
          local client = vim.lsp.get_client_by_id(event.data.client_id)
          if client and client_supports_method(client, vim.lsp.protocol.Methods.textDocument_documentHighlight, event.buf) then
            local highlight_augroup = vim.api.nvim_create_augroup('kickstart-lsp-highlight', { clear = false })
            vim.api.nvim_create_autocmd({ 'CursorHold', 'CursorHoldI' }, {
              buffer = event.buf,
              group = highlight_augroup,
              callback = vim.lsp.buf.document_highlight,
            })

            vim.api.nvim_create_autocmd({ 'CursorMoved', 'CursorMovedI' }, {
              buffer = event.buf,
              group = highlight_augroup,
              callback = vim.lsp.buf.clear_references,
            })

            vim.api.nvim_create_autocmd('LspDetach', {
              group = vim.api.nvim_create_augroup('kickstart-lsp-detach', { clear = true }),
              callback = function(event2)
                vim.lsp.buf.clear_references()
                vim.api.nvim_clear_autocmds { group = 'kickstart-lsp-highlight', buffer = event2.buf }
              end,
            })
          end

          -- Inlay hints toggle
          if client and client_supports_method(client, vim.lsp.protocol.Methods.textDocument_inlayHint, event.buf) then
            map('<leader>th', function()
              vim.lsp.inlay_hint.enable(not vim.lsp.inlay_hint.is_enabled { bufnr = event.buf })
            end, '[T]oggle Inlay [H]ints')
          end
        end,
      })

      -- Diagnostic config
      vim.diagnostic.config {
        severity_sort = true,
        float = { border = 'rounded', source = 'if_many' },
        underline = { severity = vim.diagnostic.severity.ERROR },
        signs = vim.g.have_nerd_font and {
          text = {
            [vim.diagnostic.severity.ERROR] = '󰅚 ',
            [vim.diagnostic.severity.WARN] = '󰀪 ',
            [vim.diagnostic.severity.INFO] = '󰋽 ',
            [vim.diagnostic.severity.HINT] = '󰌶 ',
          },
        } or {},
        virtual_text = {
          source = 'if_many',
          spacing = 2,
          format = function(diagnostic)
            return diagnostic.message
          end,
        },
      }

      -- Get capabilities from blink.cmp
      local capabilities = require('blink.cmp').get_lsp_capabilities()

      -- Sourcekit setup for Swift
      local lspconfig = vim.lsp.config
      lspconfig('sourcekit', {
        capabilities = capabilities,
        root_dir = function(_, callback)
          callback(require('lspconfig.util').root_pattern 'Package.swift'(vim.fn.getcwd()) or require('lspconfig.util').find_git_ancestor(vim.fn.getcwd()))
        end,
        cmd = { vim.trim(vim.fn.system 'xcrun -f sourcekit-lsp') },
      })
      vim.lsp.enable 'sourcekit'

      -- Server configurations
      local servers = {
        clangd = {},
        gopls = {},
        rust_analyzer = {},
        jedi_language_server = {},
        ts_ls = {},
        lua_ls = {
          settings = {
            Lua = {
              completion = {
                callSnippet = 'Replace',
              },
            },
          },
        },
      }

      -- Setup mason tools
      local ensure_installed = vim.tbl_keys(servers or {})
      vim.list_extend(ensure_installed, { 'stylua' })
      require('mason-tool-installer').setup { ensure_installed = ensure_installed }

      require('mason-lspconfig').setup {
        ensure_installed = {},
        automatic_installation = false,
        handlers = {
          function(server_name)
            local server = servers[server_name] or {}
            server.capabilities = vim.tbl_deep_extend('force', {}, capabilities, server.capabilities or {})
            require('lspconfig')[server_name].setup(server)
          end,
        },
      }
    end,
  },
  { -- Autoformat
    'stevearc/conform.nvim',
    event = { 'BufWritePre' },
    cmd = { 'ConformInfo' },
    keys = {
      {
        '<leader>f',
        function()
          require('conform').format { async = true, lsp_format = 'fallback' }
        end,
        mode = '',
        desc = '[F]ormat buffer',
      },
    },
    opts = {
      notify_on_error = false,
      format_on_save = function(bufnr)
        local disable_filetypes = { c = true, cpp = true }
        if disable_filetypes[vim.bo[bufnr].filetype] then
          return nil
        else
          return {
            timeout_ms = 500,
            lsp_format = 'fallback',
          }
        end
      end,
      formatters_by_ft = {
        lua = { 'stylua' },
        html = { 'djlint' },
      },
    },
  },
}