-- Native LSP — no nvim-lspconfig plugin required.
-- Server configs live in ~/.config/nvim/lsp/
-- Servers must be on your PATH (install via npm/pip/dnf etc.)

-- Global capabilities applied to every server
vim.lsp.config("*", {
  capabilities = {
    textDocument = {
      completion = {
        completionItem = {
          snippetSupport = true,
          resolveSupport = {
            properties = { "documentation", "detail", "additionalTextEdits" },
          },
        },
      },
    },
  },
})

-- Enable servers (configs are in lsp/ directory)
vim.lsp.enable({
  "ts_ls",
  "bashls",
  "cssls",
  "eslint",
  "html",
  "jsonls",
  "ruff",
  "pyright",
  "yamlls",
  "marksman",
  "clangd",
})

-- Per-buffer setup on attach
vim.api.nvim_create_autocmd("LspAttach", {
  group = vim.api.nvim_create_augroup("user.lsp", { clear = true }),
  callback = function(ev)
    local client = vim.lsp.get_client_by_id(ev.data.client_id)
    local buf = ev.buf

    -- Native completion (0.12)
    if client and client:supports_method("textDocument/completion") then
      vim.lsp.completion.enable(true, client.id, buf, { autotrigger = true })
    end

    -- Format on save
    if client and client:supports_method("textDocument/formatting") then
      vim.api.nvim_create_autocmd("BufWritePre", {
        group = vim.api.nvim_create_augroup("user.lsp.format." .. buf, { clear = true }),
        buffer = buf,
        callback = function()
          vim.lsp.buf.format({ bufnr = buf, id = client.id })
        end,
      })
    end

    -- Keymaps (replaces lspsaga bindings)
    -- 0.12 provides gra, grn, grr, gri, gO, K globally by default.
    -- These add your existing <leader> bindings on top:
    local map = function(keys, fn, desc)
      vim.keymap.set("n", keys, fn, { buffer = buf, desc = desc })
    end

    map("gd",         vim.lsp.buf.definition,   "Go to definition")
    map("<leader>gf", vim.lsp.buf.definition,   "Go to definition (alt)")
    map("<leader>g",  vim.lsp.buf.definition,   "Peek definition (native fallback)")
    map("<leader>K",  vim.lsp.buf.hover,        "Hover doc")
    map("<leader>y",  vim.lsp.buf.references,   "References")
    map("<leader>rn", vim.lsp.buf.rename,       "Rename")
    map("<leader>b",  vim.lsp.buf.code_action,  "Code action")
    map("<leader>r",  vim.diagnostic.open_float,"Show line diagnostics")
    map("[d",         vim.diagnostic.goto_prev, "Previous diagnostic")
    map("]d",         vim.diagnostic.goto_next, "Next diagnostic")
  end,
})