vim.list_extend(lvim.lsp.automatic_configuration.skipped_servers, { "clangd" })

-- some settings can only passed as commandline flags, see `clangd --help`
local clangd_flags = {
  "--background-index",
  "--fallback-style=Google",
  "--all-scopes-completion",
  "--clang-tidy",
  "--log=error",
  "--suggest-missing-includes",
  "--cross-file-rename",
  "--completion-style=detailed",
  "--pch-storage=memory", -- could also be disk
  "--folding-ranges",
  "--enable-config", -- clangd 11+ supports reading from .clangd configuration file
  "--offset-encoding=utf-16", --temporary fix for null-ls
  -- "--limit-references=1000",
  -- "--limit-resutls=1000",
  -- "--malloc-trim",
  -- "--clang-tidy-checks=-*,llvm-*,clang-analyzer-*,modernize-*,-modernize-use-trailing-return-type",
  -- "--header-insertion=never",
  -- "--query-driver=<list-of-white-listed-complers>"
}

local provider = "clangd"

local custom_on_attach = function(client, bufnr)
  require("lvim.lsp").common_on_attach(client, bufnr)

  local opts = { noremap = true, silent = true, buffer = bufnr }
  vim.keymap.set("n", "<leader>lh", "<cmd>ClangdSwitchSourceHeader<cr>", opts)
  vim.keymap.set("x", "<leader>lA", "<cmd>ClangdAST<cr>", opts)
  vim.keymap.set("n", "<leader>lH", "<cmd>ClangdTypeHierarchy<cr>", opts)
  vim.keymap.set("n", "<leader>lt", "<cmd>ClangdSymbolInfo<cr>", opts)
  vim.keymap.set("n", "<leader>lm", "<cmd>ClangdMemoryUsage<cr>", opts)

  require("clangd_extensions.inlay_hints").setup_autocmd()
  require("clangd_extensions.inlay_hints").set_inlay_hints()
end

local status_ok, project_config = pcall(require, "rhel.clangd_wrl")
if status_ok then
  clangd_flags = vim.tbl_deep_extend("keep", project_config, clangd_flags)
end

local custom_on_init = function(client, bufnr)
  require("lvim.lsp").common_on_init(client, bufnr)
  require("clangd_extensions.config").setup {}
  require("clangd_extensions.ast").init()
  vim.cmd [[
  command ClangdToggleInlayHints lua require('clangd_extensions.inlay_hints').toggle_inlay_hints()
  command -range ClangdAST lua require('clangd_extensions.ast').display_ast(<line1>, <line2>)
  command ClangdTypeHierarchy lua require('clangd_extensions.type_hierarchy').show_hierarchy()
  command ClangdSymbolInfo lua require('clangd_extensions.symbol_info').show_symbol_info()
  command -nargs=? -complete=customlist,s:memuse_compl ClangdMemoryUsage lua require('clangd_extensions.memory_usage').show_memory_usage('<args>' == 'expand_preamble')
  ]]
end

local opts = {
  cmd = { provider, unpack(clangd_flags) },
  on_attach = custom_on_attach,
  on_init = custom_on_init,
}

require("lvim.lsp.manager").setup("clangd", opts)

-- install codelldb with :MasonInstall codelldb
-- configure nvim-dap (codelldb)
lvim.builtin.dap.on_config_done = function(dap)
  dap.adapters.codelldb = {
    type = "server",
    port = "${port}",
    executable = {
      -- provide the absolute path for `codelldb` command if not using the one installed using `mason.nvim`
      command = "codelldb",
      args = { "--port", "${port}" },

      -- On windows you may have to uncomment this:
      -- detached = false,
    },
  }

  dap.configurations.cpp = {
    {
      name = "Launch file",
      type = "codelldb",
      request = "launch",
      program = function()
        local path
        vim.ui.input({ prompt = "Path to executable: ", default = vim.loop.cwd() .. "/build/" }, function(input)
          path = input
        end)
        vim.cmd [[redraw]]
        return path
      end,
      cwd = "${workspaceFolder}",
      stopOnEntry = false,
    },
  }

  dap.configurations.c = dap.configurations.cpp
end