-- -@diagnostic disable: unused-local, unused-function, lowercase-global
local M = {}

local replace_rules = require("Trans.conf.default").replace_rules

local star_format = [[
local def, usr = default_conf.%s, user_conf.%s
if def and usr then
    for k, v in pairs(usr) do
        def[k] = v
        usr[k] = nil
    end
end
]]

local plain_format = [[
default_conf.%s = user_conf.%s or default_conf.%s
]]

local function pre_process()
    if replace_rules then
        for _, v in ipairs(replace_rules) do
            local start = v:find('.*', 1, true)
            local operation
            if start then
                -- 替换表内所有键
                v = v:sub(1, start - 1)
                -- print('v is :', v)
                operation = string.format(star_format, v, v)
            else
                operation = plain_format:format(v, v, v)
            end
            -- print(operation)
            pcall(loadstring(operation))
        end
    end
end



M.load_conf = function(conf)
    if #M.loaded_conf == 0 then
        user_conf = conf or {}
        default_conf  = require("Trans.conf.default").conf
        pre_process()
        M.loaded_conf = vim.tbl_deep_extend('force', default_conf, user_conf)
        user_conf = nil
        default_conf = nil
    else
        vim.notify('Configuration has been loaded...')
    end
end

M.loaded_conf = {}

return M