vim.api.nvim_create_autocmd('LspAttach', {
    group = vim.api.nvim_create_augroup('UserLspConfig', {}),
    callback = function(ev)
        -- Enable completion triggered by <c-x><c-o>
        vim.bo[ev.buf].omnifunc = 'v:lua.vim.lsp.omnifunc'

        -- Buffer local mappings.
        -- See `:help vim.lsp.*` for documentation on any of the below functions
        local opts = { buffer = ev.buf }
        vim.keymap.set('n', 'gD', vim.lsp.buf.declaration, opts)
        vim.keymap.set('n', 'gd', vim.lsp.buf.definition, opts)
        vim.keymap.set('n', 'K', vim.lsp.buf.hover, opts)
        vim.keymap.set('n', 'gi', vim.lsp.buf.implementation, opts)
        vim.keymap.set('n', '<C-k>', vim.lsp.buf.signature_help, opts)
        vim.keymap.set('n', '<space>wa', vim.lsp.buf.add_workspace_folder, opts)
        vim.keymap.set('n', '<space>wr', vim.lsp.buf.remove_workspace_folder, opts)
        vim.keymap.set('n', '<space>wl', function()
            print(vim.inspect(vim.lsp.buf.list_workspace_folders()))
        end, opts)
        vim.keymap.set('n', '<space>D', vim.lsp.buf.type_definition, opts)
        vim.keymap.set('n', '<space>rn', vim.lsp.buf.rename, opts)
        vim.keymap.set({ 'n', 'v' }, '<space>ca', vim.lsp.buf.code_action, opts)
        vim.keymap.set('n', 'gr', vim.lsp.buf.references, opts)
        vim.keymap.set('n', '<space>f', function()
            vim.lsp.buf.format { async = true }
        end, opts)
    end,
})

return {
    {
        "neovim/nvim-lspconfig",
        dependencies = {
            "hrsh7th/cmp-nvim-lsp",
        },
        config = function()
            local lspconfig = require("lspconfig")

            local capabilities = require("cmp_nvim_lsp").default_capabilities();

            lspconfig.pyright.setup({
                capabilities = capabilities,
            })

            lspconfig.rust_analyzer.setup({
                capabilities = capabilities,
            })

            lspconfig.lua_ls.setup({
                capabilities = capabilities,
                settings = {
                    Lua = {
                        runtime = {
                            -- Tell the language server which version of Lua you're using (most likely LuaJIT in the case of Neovim)
                            version = "LuaJIT",
                        },
                        workspace = {
                            -- Make the server aware of Neovim runtime files
                            library = vim.api.nvim_get_runtime_file("", true),
                        },
                        -- Do not send telemetry data containing a randomized but unique identifier
                        telemetry = {
                            enable = false,
                        },
                    },
                },
            })
        end
    },
    {
        "simrat39/rust-tools.nvim",
        dependencies = {
            "nvim-lua/plenary.nvim",
            {
                "Saecki/crates.nvim",
                tag = 'stable',
            },
        },
        opts = {
            server = {
                on_attach = function(_, bufnr)
                    local rt = require("rust-tools");
                    -- Hover actions
                    vim.keymap.set("n", "<C-space>", rt.hover_actions.hover_actions, { buffer = bufnr })
                    -- Code action groups
                    vim.keymap.set("n", "<Leader>a", rt.code_action_group.code_action_group, { buffer = bufnr })
                end,
            },
        },
        event = { "LspAttach *.rs" },
    }
}