local M = {}


M._keys = nil

function M.get()
  if not M._keys then
    M._keys = {
      { "<leader>cd", vim.diagnostic.open_float, desc = "Line Diagnostics" },
      { "<leader>cw", "<cmd>Telsecope diagnostics<cr>", desc = "Workspace diagnostics" },
      { "<leader>cl", "<cmd>LspInfo<cr>", desc = "Lsp Info" },
      { "gd", "<cmd>Telescope lsp_definitions<cr>", desc = "Goto Definition", has = "definition" },
      { "gr", "<cmd>Telescope lsp_references<cr>", desc = "References" },
      { "gD", vim.lsp.buf.declaration, desc = "Goto Declaration" },
      { "gI", "<cmd>Telescope lsp_implementations<cr>", desc = "Goto Implementation" },
      { "gt", "<cmd>Telescope lsp_type_definitions<cr>", desc = "Goto Type Definition" },
      { "K", vim.lsp.buf.hover, desc = "Hover", has = "hover" },
      { "gK", vim.lsp.buf.signature_help, desc = "Signature Help", has = "signatureHelp" },
      { "<c-k>", vim.lsp.buf.signature_help, mode = "i", desc = "Signature Help", has = "signatureHelp" },
      { "]d", M.diagnostic_goto(true), desc = "Next Diagnostic" },
      { "[d", M.diagnostic_goto(false), desc = "Prev Diagnostic" },
      { "]e", M.diagnostic_goto(true, "ERROR"), desc = "Next Error" },
      { "[e", M.diagnostic_goto(false, "ERROR"), desc = "Prev Error" },
      { "]w", M.diagnostic_goto(true, "WARN"), desc = "Next Warning" },
      { "[w", M.diagnostic_goto(false, "WARN"), desc = "Prev Warning" },
      { "<leader>ca", vim.lsp.buf.code_action, desc = "Code Action", mode = { "n", "v" }, has = "codeAction" },
      { "<leader>cr", vim.lsp.buf.rename, desc = "Rename", has = "rename" },
      {
        "<leader>cA",
        function()
          vim.lsp.buf.code_action({
            context = {
              only = {
                "source",
              },
              diagnostics = {},
            },
          })
        end,
        desc = "Source Action",
        has = "codeAction",
      },
    }
  end
  return M._keys
end

function M.on_attach(client, buffer)
  local Keys = require("lazy.core.handler.keys")
  for _, keys in pairs(M.get()) do
    if not keys.has or client.server_capabilities[keys.has .. "Provider"] then
      local opts = Keys.opts(keys)
      ---@diagnostic disable-next-line: no-unknown
      opts.has = nil
      opts.silent = opts.silent ~= false
      opts.buffer = buffer
      vim.keymap.set(keys.mode or "n", keys[1], keys[2], opts)
    end
  end
end

function M.diagnostic_goto(next, severity)
  local go = next and vim.diagnostic.goto_next or vim.diagnostic.goto_prev
  severity = severity and vim.diagnostic.severity[severity] or nil
  return function() go({ severity = severity }) end
end

return M
