-- ============================================================================
-- LSP 语言服务器
-- ============================================================================

return {
    -- Mason: 外部工具管理 (:Mason 打开管理界面)
    {
        "williamboman/mason.nvim",
        cmd = "Mason",
        opts = {},
    },

    -- Mason 与 LSP 桥接，自动安装指定服务器
    {
        "williamboman/mason-lspconfig.nvim",
        dependencies = { "williamboman/mason.nvim" },
        opts = {
            ensure_installed = {
                "lua_ls",    -- Lua
                "bashls",    -- Bash
                "clangd",    -- C/C++
                "neocmake",  -- CMake
            },
        },
    },

    -- LSP 配置（Neovim 0.11+ vim.lsp.config API）
    {
        "neovim/nvim-lspconfig",
        event = { "BufReadPre", "BufNewFile" },
        dependencies = {
            "williamboman/mason.nvim",
            "williamboman/mason-lspconfig.nvim",
            "saghen/blink.cmp",
        },
        config = function()
            -- LSP 附加时自动开启 inlay hints
            vim.api.nvim_create_autocmd("LspAttach", {
                callback = function(args)
                    local map = function(keys, func, desc)
                        vim.keymap.set("n", keys, func, { buffer = args.buf, desc = desc })
                    end
                    map("gd", vim.lsp.buf.definition, "跳转到定义")
                    map("gr", vim.lsp.buf.references, "查找引用")
                    map("K", vim.lsp.buf.hover, "悬浮文档")
                    map("<leader>rn", vim.lsp.buf.rename, "重命名")
                    map("<M-CR>", vim.lsp.buf.code_action, "代码操作")
                    map("<leader>d", vim.diagnostic.open_float, "行诊断")
                    map("[d", vim.diagnostic.goto_prev, "上一个诊断")
                    map("]d", vim.diagnostic.goto_next, "下一个诊断")

                    -- 开启 inlay hints
                    vim.lsp.inlay_hint.enable(true, { bufnr = args.buf })
                end,
            })

            local caps = require("blink.cmp").get_lsp_capabilities()

            -- Lua
            vim.lsp.config("lua_ls", {
                cmd = { "lua-language-server" },
                capabilities = caps,
                settings = {
                    Lua = {
                        runtime = { version = "Lua5.5" },
                        workspace = { checkThirdParty = false },
                        diagnostics = { globals = { "vim" } },
                    },
                },
            })

            -- Bash
            vim.lsp.config("bashls", {
                cmd = { "bash-language-server", "start" },
                capabilities = caps,
            })

            -- C/C++ (clangd)
            vim.lsp.config("clangd", {
                cmd = { "clangd" },
                capabilities = caps,
            })

            -- CMake
            vim.lsp.config("neocmake", {
                cmd = { "neocmakelsp", "stdio" },
                filetypes = { "cmake" },
                root_dir = vim.fs.root(0, { ".git", "CMakeLists.txt" }),
                single_file_support = true,
                init_options = {
                    format = { enable = true },
                    lint = { enable = true },
                },
            })

            -- 启用所有 LSP（Rust 由 rustaceanvim 管理，不在此启用）
            vim.lsp.enable({ "lua_ls", "bashls", "clangd", "neocmake" })
        end,
    },
}