1 files changed, 154 insertions, 0 deletions
diff --git a/.config/nvim/lua/bootstrap.lua b/.config/nvim/lua/bootstrap.lua
new file mode 100644
index 0000000..e8794d6
--- /dev/null
+++ b/.config/nvim/lua/bootstrap.lua
@@ -0,0 +1,154 @@
+local M = {}
+
+local in_headless = #vim.api.nvim_list_uis() == 0
+
+---Join path segments that were passed as input
+---@return string
+function _G.join_paths(...)
+  local uv = vim.loop
+  local path_sep = "/"
+  local result = table.concat({ ... }, path_sep)
+  return result
+end
+
+---Get the full path to `$LUNARVIM_RUNTIME_DIR`
+---@return string
+function _G.get_runtime_dir()
+  -- when nvim is used directly
+  return vim.fn.stdpath "config"
+end
+
+---Get the full path to `$LUNARVIM_CONFIG_DIR`
+---@return string
+function _G.get_config_dir()
+  return vim.fn.stdpath "config"
+end
+
+function _G.get_data_dir()
+  return vim.fn.stdpath "data"
+end
+
+---Get the full path to `$LUNARVIM_CACHE_DIR`
+---@return string
+function _G.get_cache_dir()
+  return vim.fn.stdpath "cache"
+end
+
+---Initialize the `&runtimepath` variables and prepare for startup
+---@return table
+function M:init()
+  self.runtime_dir = get_runtime_dir()
+  self.config_dir = get_config_dir()
+  self.cache_path = get_cache_dir()
+  self.data_dir = get_data_dir()
+  self.repo_dir = join_paths(self.runtime_dir, "nvim")
+
+  self.pack_dir = join_paths(self.data_dir, "site", "pack")
+  self.packer_install_dir = join_paths(
+    self.data_dir,
+    "site",
+    "pack",
+    "packer",
+    "start",
+    "packer.nvim"
+  )
+  self.packer_cache_path = join_paths(self.config_dir, "plugin", "packer_compiled.lua")
+  vim.fn.mkdir(vim.fn.stdpath "cache", "p")
+
+  local config = require "config"
+  config:init {
+    path = join_paths(self.config_dir, "config.lua"),
+  }
+
+  require("plugin-loader"):init {
+    package_root = self.pack_dir,
+    install_path = self.packer_install_dir,
+  }
+
+  return self
+end
+
+---Update LunarVim
+---pulls the latest changes from github and, resets the startup cache
+function M:update()
+  M:update_repo()
+  M:reset_cache()
+  require("lsp.templates").generate_templates()
+  if not in_headless then
+    vim.schedule(function()
+      require("packer").install()
+      -- TODO: add a changelog
+      vim.notify("Update complete", vim.log.levels.INFO)
+    end)
+  end
+end
+
+local function git_cmd(subcmd)
+  local Job = require "plenary.job"
+  local Log = require "core.log"
+  local repo_dir = join_paths(get_runtime_dir(), "nvim")
+  local args = { "-C", repo_dir }
+  vim.list_extend(args, subcmd)
+
+  local stderr = {}
+  local stdout, ret = Job
+    :new({
+      command = "git",
+      args = args,
+      cwd = repo_dir,
+      on_stderr = function(_, data)
+        table.insert(stderr, data)
+      end,
+    })
+    :sync()
+
+  if not vim.tbl_isempty(stderr) then
+    Log:debug(stderr)
+  end
+
+  if not vim.tbl_isempty(stdout) then
+    Log:debug(stdout)
+  end
+
+  return ret
+end
+
+---pulls the latest changes from github
+function M:update_repo()
+  local Log = require "core.log"
+  local sub_commands = {
+    fetch = { "fetch" },
+    diff = { "diff", "--quiet", "@{upstream}" },
+    merge = { "merge", "--ff-only", "--progress" },
+  }
+  Log:info "Checking for updates"
+
+  local ret = git_cmd(sub_commands.fetch)
+  if ret ~= 0 then
+    error "Update failed! Check the log for further information"
+  end
+
+  ret = git_cmd(sub_commands.diff)
+
+  if ret == 0 then
+    Log:info "nvim is already up-to-date"
+    return
+  end
+
+  ret = git_cmd(sub_commands.merge)
+
+  if ret ~= 0 then
+    error "Error: unable to guarantee data integrity while updating your branch"
+    error "Please pull the changes manually instead."
+  end
+end
+
+---Reset any startup cache files used by Packer and Impatient
+---Tip: Useful for clearing any outdated settings
+function M:reset_cache()
+  _G.__luacache.clear_cache()
+  _G.__luacache.save_cache()
+  require("plugin-loader"):cache_reset()
+end
+
+return M