-- =============================================================================
-- ui.lua — UI 美化套件（VSCode 风格核心）
-- =============================================================================
-- 【全新文件】这是从参考配置提取 + 定制的 UI 套件。
-- 包含：bufferline（标签栏）、lualine（状态栏）、noice（命令行）、
--       nvim-notify（通知）、dashboard（启动页）、dressing（输入框）。
-- 【修复】🔧 bufferline/lualine/dashboard 改为 lazy=false 立即加载，
--         避免 nvim . 打开目录时 UI 不显示。

return {

  -- ─────────────────────────────────────────────
  -- bufferline: 顶部标签栏（VSCode 核心）
  -- ─────────────────────────────────────────────
  {
    "akinsho/bufferline.nvim",
    version = "*",
    -- 🔧 修复：去掉 event = "BufReadPre"，改为立即加载
    lazy = false,
    dependencies = {
      "nvim-tree/nvim-web-devicons",
      -- ✅ 新增：提供 Bdelete 命令，让 close_command 能正常工作
      "famiu/bufdelete.nvim",
    },
    config = function()
      require("bufferline").setup({
        options = {
          mode = "buffers",
          style_preset = require("bufferline").style_preset.default,
          themable = true,
          numbers = "none",
          close_command = "Bdelete!",
          right_mouse_command = "Bdelete!",
          indicator = { style = "icon", icon = "▎" },
          buffer_close_icon = "󰅖",
          modified_icon = "●",
          close_icon = "",
          left_trunc_marker = "",
          right_trunc_marker = "",
          max_name_length = 18,
          max_prefix_length = 15,
          truncate_names = true,
          tab_size = 18,
          diagnostics = "nvim_lsp",
          diagnostics_update_in_insert = false,
          -- ✅ 适配 oil.nvim 和 nvim-tree：左侧文件浏览器偏移
          offsets = {
            {
              filetype = "oil",
              text = "文件浏览器",
              highlight = "Directory",
              text_align = "left",
            },
            {
              filetype = "NvimTree",
              text = "文件树",
              highlight = "Directory",
              text_align = "left",
            },
          },
          color_icons = true,
          show_buffer_icons = true,
          show_buffer_close_icons = true,
          show_close_icon = false,
          show_tab_indicators = true,
          persist_buffer_sort = true,
          separator_style = "thin",
          enforce_regular_tabs = false,
          always_show_bufferline = true,
          hover = {
            enabled = true,
            delay = 200,
            reveal = { "close" },
          },
        },
      })
    end,
  },

  -- ─────────────────────────────────────────────
  -- lualine: 底部状态栏（VSCode 核心）
  -- ─────────────────────────────────────────────
  {
    "nvim-lualine/lualine.nvim",
    -- 🔧 修复：改为立即加载，确保一打开就有状态栏
    lazy = false,
    dependencies = {
      "nvim-tree/nvim-web-devicons",
    },
    opts = {
      options = {
        component_separators = "|",
        section_separators = "",
        globalstatus = true,
        theme = "tokyonight",
      },
      sections = {
        lualine_a = { "mode" },
        lualine_b = { "branch", "diff", "diagnostics" },
        lualine_c = { { "filename", path = 1 } },
        lualine_x = { "encoding", "fileformat", "filetype" },
        lualine_y = { "progress" },
        lualine_z = { "location" },
      },
    },
  },

  -- ─────────────────────────────────────────────
  -- noice.nvim: 命令行美化
  -- ─────────────────────────────────────────────
  {
    "folke/noice.nvim",
    event = "VeryLazy",
    opts = {
      cmdline = {
        view = "cmdline_popup",
        format = {
          search_down = { icon = " " },
          search_up   = { icon = " " },
        },
      },
      messages = {
        enabled = true,
        view = "notify",
        view_error = "notify",
        view_warn = "notify",
      },
      popupmenu = {
        enabled = true,
        backend = "nui",
      },
      presets = {
        bottom_search = false,
        command_palette = true,
        long_message_to_split = true,
        inc_rename = true,
        lsp_doc_border = true,
      },
    },
    dependencies = {
      "MunifTanjim/nui.nvim",
      "rcarriga/nvim-notify",
    },
  },

  -- ─────────────────────────────────────────────
  -- nvim-notify: 通知美化
  -- ─────────────────────────────────────────────
  {
    "rcarriga/nvim-notify",
    lazy = false,  -- 🔧 修复：立即加载，让 noice 能用
    opts = {
      timeout = 3000,
      max_width = 50,
      render = "compact",
      stages = "fade",
    },
    config = function(_, opts)
      local notify = require("notify")
      notify.setup(opts)
      vim.notify = notify
    end,
  },

  -- ─────────────────────────────────────────────
  -- dressing.nvim: 输入框美化
  -- ─────────────────────────────────────────────
  {
    "stevearc/dressing.nvim",
    event = "VeryLazy",
    opts = {},
  },

  -- ─────────────────────────────────────────────
  -- dashboard-nvim: 启动首页
  -- ─────────────────────────────────────────────
  {
    "nvimdev/dashboard-nvim",
    lazy = false,  -- 🔧 修复：必须立即加载才能在启动时显示
    dependencies = { "nvim-tree/nvim-web-devicons" },
    opts = {
      theme = "doom",
      config = {
        header = {
          "",
          "  ███╗   ██╗███████╗ ██████╗ ██╗   ██╗██╗   ██╗██╗███╗   ███╗",
          "  ████╗  ██║██╔════╝██╔═══██╗██║   ██║██║   ██║██║████╗ ████║",
          "  ██╔██╗ ██║█████╗  ██║   ██║██║   ██║██║   ██║██║██╔████╔██║",
          "  ██║╚██╗██║██╔══╝  ██║   ██║╚██╗ ██╔╝╚██╗ ██╔╝██║██║╚██╔╝██║",
          "  ██║ ╚████║███████╗╚██████╔╝ ╚████╔╝  ╚████╔╝ ██║██║ ╚═╝ ██║",
          "  ╚═╝  ╚═══╝╚══════╝ ╚═════╝   ╚═══╝    ╚═══╝  ╚═╝╚═╝     ╚═╝",
          "",
        },
        center = {
          { icon = "  ", key = "f", desc = "查找文件",     action = "Telescope find_files" },
          { icon = "  ", key = "r", desc = "最近文件",     action = "Telescope oldfiles" },
          { icon = "  ", key = "g", desc = "全局搜索",     action = "Telescope live_grep" },
          { icon = "  ", key = "l", desc = "插件管理",     action = "Lazy" },
          { icon = "  ", key = "m", desc = "LSP 管理",     action = "Mason" },
          { icon = "  ", key = "q", desc = "退出",         action = "qa" },
        },
        footer = { "  atdunbg · Neovim" },
      },
    },
  },

  -- ─────────────────────────────────────────────
  -- 通用依赖（多个插件共用）
  -- ─────────────────────────────────────────────
  { "nvim-lua/plenary.nvim", lazy = true },
  { "MunifTanjim/nui.nvim",  lazy = true },
}