local Util = require("lazyvim.util")

---@class LazyVimConfig: LazyVimOptions
local M = {}

---@class LazyVimOptions
local defaults = {
  -- colorscheme can be a string like `catppuccin` or a function that will load the colorscheme
  ---@type string|fun()
  colorscheme = function()
    require("tokyonight").load()
  end,
  -- load the default settings
  defaults = {
    autocmds = true, -- lazyvim.config.autocmds
    keymaps = true, -- lazyvim.config.keymaps
    -- lazyvim.config.options can't be configured here since that's loaded before lazyvim setup
    -- if you want to disable loading options, add `package.loaded["lazyvim.config.options"] = true` to the top of your init.lua
  },
  -- icons used by other plugins
  icons = {
    misc = {
      dots = "󰇘",
    },
    dap = {
      Stopped = { "󰁕 ", "DiagnosticWarn", "DapStoppedLine" },
      Breakpoint = " ",
      BreakpointCondition = " ",
      BreakpointRejected = { " ", "DiagnosticError" },
      LogPoint = ".>",
    },
    diagnostics = {
      Error = " ",
      Warn = " ",
      Hint = " ",
      Info = " ",
    },
    git = {
      added = " ",
      modified = " ",
      removed = " ",
    },
    kinds = {
      Array = " ",
      Boolean = " ",
      Class = " ",
      Codeium = "󰘦 ",
      Color = " ",
      Constant = " ",
      Constructor = " ",
      Copilot = " ",
      Enum = " ",
      EnumMember = " ",
      Event = " ",
      Field = " ",
      File = " ",
      Folder = " ",
      Function = " ",
      Interface = " ",
      Key = " ",
      Keyword = " ",
      Method = " ",
      Module = " ",
      Namespace = " ",
      Null = " ",
      Number = " ",
      Object = " ",
      Operator = " ",
      Package = " ",
      Property = " ",
      Reference = " ",
      Snippet = " ",
      String = " ",
      Struct = " ",
      Text = " ",
      TypeParameter = " ",
      Unit = " ",
      Value = " ",
      Variable = " ",
    },
  },
}

---@type LazyVimOptions
local options

---@param opts? LazyVimOptions
function M.setup(opts)
  options = vim.tbl_deep_extend("force", defaults, opts or {}) or {}

  -- autocmds can be loaded lazily when not opening a file
  local lazy_autocmds = vim.fn.argc(-1) == 0
  if not lazy_autocmds then
    M.load("autocmds")
  end

  local group = vim.api.nvim_create_augroup("LazyVim", { clear = true })
  vim.api.nvim_create_autocmd("User", {
    group = group,
    pattern = "VeryLazy",
    callback = function()
      if lazy_autocmds then
        M.load("autocmds")
      end
      M.load("keymaps")
      Util.format.setup()
    end,
  })

  Util.track("colorscheme")
  Util.try(function()
    if type(M.colorscheme) == "function" then
      M.colorscheme()
    else
      vim.cmd.colorscheme(M.colorscheme)
    end
  end, {
    msg = "Could not load your colorscheme",
    on_error = function(msg)
      Util.error(msg)
      vim.cmd.colorscheme("habamax")
    end,
  })
  Util.track()
end

---@param name "autocmds" | "options" | "keymaps"
function M.load(name)
  local function _load(mod)
    if require("lazy.core.cache").find(mod)[1] then
      Util.try(function()
        require(mod)
      end, { msg = "Failed loading " .. mod })
    end
  end
  -- always load lazyvim, then user file
  if M.defaults[name] or name == "options" then
    _load("lazyvim.config." .. name)
  end
  _load("config." .. name)
  if vim.bo.filetype == "lazy" then
    -- HACK: LazyVim may have overwritten options of the Lazy ui, so reset this here
    vim.cmd([[do VimResized]])
  end
  local pattern = "LazyVim" .. name:sub(1, 1):upper() .. name:sub(2)
  vim.api.nvim_exec_autocmds("User", { pattern = pattern, modeline = false })
end

M.did_init = false
function M.init()
  if M.did_init then
    return
  end
  M.did_init = true
  local plugin = require("lazy.core.config").spec.plugins.LazyVim
  if plugin then
    vim.opt.rtp:append(plugin.dir)
  end

  package.preload["lazyvim.plugins.lsp.format"] = function()
    Util.deprecate([[require("lazyvim.plugins.lsp.format")]], [[require("lazyvim.util").format]])
    return Util.format
  end

  -- delay notifications till vim.notify was replaced or after 500ms
  require("lazyvim.util").lazy_notify()

  -- load options here, before lazy init while sourcing plugin modules
  -- this is needed to make sure options will be correctly applied
  -- after installing missing plugins
  M.load("options")

  Util.plugin.fix_imports()
  Util.plugin.fix_renames()
  Util.plugin.lazy_file()
end

setmetatable(M, {
  __index = function(_, key)
    if options == nil then
      return vim.deepcopy(defaults)[key]
    end
    ---@cast options LazyVimConfig
    return options[key]
  end,
})

return M