-- ============================================================================
-- 模糊搜索 (telescope)
-- ============================================================================

return {
    {
        "nvim-telescope/telescope.nvim",
        branch = "0.1.x",
        dependencies = {
            "nvim-lua/plenary.nvim",
            "nvim-telescope/telescope-ui-select.nvim",
        },
        cmd = "Telescope",
        keys = {
            { "<leader>ff", "<cmd>Telescope find_files<cr>",  desc = "查找文件" },
            { "<leader>fg", "<cmd>Telescope live_grep<cr>",   desc = "全局搜索" },
            { "<leader>fb", "<cmd>Telescope buffers<cr>",     desc = "切换缓冲区" },
            { "<leader>fh", "<cmd>Telescope help_tags<cr>",   desc = "帮助文档" },
            { "<leader>fk", "<cmd>Telescope keymaps<cr>",     desc = "查找键位" },
            { "<leader>fr", "<cmd>Telescope oldfiles<cr>",    desc = "最近文件" },
        },
        -- 启动即加载：ui-select 扩展需要全局接管 vim.ui.select，
        -- 懒加载会导致未触发 :Telescope 时（如 <leader>rr）回退到原生 UI
        lazy = false,
        opts = {
            defaults = {
                prompt_prefix   = " > ",
                selection_caret = " > ",
                layout_strategy = "flex",
            },
        },
        config = function(_, opts)
            local telescope = require("telescope")

            -- extensions 需要 require telescope.themes，必须在 config 里构造
            opts.extensions = {
                ["ui-select"] = {
                    require("telescope.themes").get_dropdown({}),
                },
            }

            telescope.setup(opts)
            -- 用 pcall 保护，避免 ui-select 扩展未安装时崩溃
            pcall(telescope.load_extension, "ui-select")
        end,
    },
}