-- The LSP stuff is excerpt from Lunarvim
local function attached_clients()
    local buf_clients = vim.lsp.get_active_clients { bufnr = 0 }
    if #buf_clients == 0 then
        return "LSP Inactive"
    end

    local buf_ft = vim.bo.filetype
    local buf_client_names = {}
    

    -- add client
    for _, client in pairs(buf_clients) do
        if client.name ~= "copilot" then
            table.insert(buf_client_names, client.name)
        end

    end


    -- Add linters (from nvim-lint)
    local lint_s, lint = pcall(require, "lint")
    if lint_s then
        for ft_k, ft_v in pairs(lint.linters_by_ft) do
            if (type(ft_v) == "table") then
                for _, linter in ipairs(ft_v) do
                    if buf_ft == ft_k then
                        table.insert(buf_client_names, linter)
                    end
                end
            elseif type(ft_v) == "string" then
                if buf_ft == ft_k then
                    table.insert(buf_client_names, ft_v)
                end
            end
        end
    end

    -- Add formatters (from formatter.nvim)
    local formatter_s, formatter = pcall(require, "formatter")
    if formatter_s then
        local formatter_config = require("formatter.config")
        local user_defined_formatters = formatter_config.values.filetype
        for formatter_filetype, formatter_functions in pairs(user_defined_formatters) do
            if formatter_filetype == "*" or buf_ft == formatter_filetype then
                for _, formatter_function in ipairs(formatter_functions) do
                    local formatter_info = formatter_function()
                    table.insert(buf_client_names, formatter_info.exe)
                end
            end
        end
    end


    local unique_client_names = table.concat(buf_client_names, ", ")
    local language_servers = string.format("[%s]", unique_client_names)

    return language_servers
end

return {
    "nvim-lualine/lualine.nvim",
    event = { "VimEnter", "BufReadPost", "BufNewFile" },
    config = function()
        local lsp_component = {
            attached_clients,
            color = {
                gui = "bold"
            }
        }
        require("lualine").setup({
            options = {
                theme = "auto",
                globalstatus = true,
                component_separators = { left = "|", right = "|" },
            },


            sections = {
                lualine_b = { "branch", "diff" },
                lualine_x = { "diagnostics", lsp_component, "filetype" },

            }
        })
    end,
}