local M = {}

---@type vim.lsp.client.on_attach_cb
M.on_attach = function(client, bufnr)
    local telescope = require("telescope.builtin")
    local methods = vim.lsp.protocol.Methods

    ---@param bind string
    ---@param cmd function | string
    ---@param desc string
    local function nnoremap(bind, cmd, desc)
        local args = {
            buffer = bufnr,
            desc = "LSP: " .. desc,
        }
        vim.keymap.set("n", bind, cmd, args)
    end

    nnoremap("K", vim.lsp.buf.hover, "hover")
    nnoremap("<C-k>", vim.lsp.buf.signature_help, "signature help")
    nnoremap("gd", telescope.lsp_definitions, "goto definition(s) (telescope)")
    nnoremap("gu", telescope.lsp_references, "goto usage(s) (telescope)")
    nnoremap("<leader>ca", vim.lsp.buf.code_action, "code action")
    -- TODO: Maybe remove these or use the defaults?
    nnoremap("<leader>cl", vim.lsp.codelens.run, "run codelens")
    nnoremap("<leader>r", vim.lsp.buf.rename, "rename symbol")
    nnoremap("<leader>f", function() vim.lsp.buf.format { async = true } end, "format buffer")

    local filetype = vim.api.nvim_get_option_value("filetype", { buf = bufnr })
    if
        client:supports_method(methods.textDocument_inlayHint)
        -- Never start cabal with inlay hint request
        -- Related: https://github.com/mrcjkb/haskell-tools.nvim/discussions/485
        and filetype ~= "cabal"
    then
        vim.lsp.inlay_hint.enable(true, { bufnr = bufnr })
    end
end

local capabilities = vim.lsp.protocol.make_client_capabilities()
capabilities = require("cmp_nvim_lsp").default_capabilities(capabilities)
---@type lsp.ClientCapabilities
M.capabilities = capabilities

---@type string|(string|[string,string])[]
M.border = {
    { " ", "FloatBorder" },
    { " ", "FloatBorder" },
    { " ", "FloatBorder" },
    { " ", "FloatBorder" },
    { " ", "FloatBorder" },
    { " ", "FloatBorder" },
    { " ", "FloatBorder" },
    { " ", "FloatBorder" },
}

return M