1 files changed, 158 insertions, 0 deletions
diff --git a/lua/lvim/utils/git.lua b/lua/lvim/utils/git.lua
new file mode 100644
index 00000000..73ba7c96
--- /dev/null
+++ b/lua/lvim/utils/git.lua
@@ -0,0 +1,158 @@
+local M = {}
+
+local Log = require "lvim.core.log"
+
+local function git_cmd(opts)
+  local plenary_loaded, Job = pcall(require, "plenary.job")
+  if not plenary_loaded then
+    vim.cmd "packadd plenary.nvim"
+  end
+
+  opts = opts or {}
+  opts.cwd = opts.cwd or get_lvim_base_dir()
+
+  local stderr = {}
+  local stdout, ret = Job
+    :new({
+      command = "git",
+      args = opts.args,
+      cwd = opts.cwd,
+      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, stdout
+end
+
+local function safe_deep_fetch()
+  local ret, result = git_cmd { args = { "rev-parse", "--is-shallow-repository" } }
+  if ret ~= 0 then
+    Log:error "Git fetch failed! Check the log for further information"
+    return
+  end
+  -- git fetch --unshallow will cause an error on a a complete clone
+  local fetch_mode = result[1] == "true" and "--unshallow" or "--all"
+  ret = git_cmd { args = { "fetch", fetch_mode } }
+  if ret ~= 0 then
+    Log:error "Git fetch failed! Check the log for further information"
+    return
+  end
+  return true
+end
+
+---pulls the latest changes from github
+function M.update_base_lvim()
+  Log:info "Checking for updates"
+
+  local ret = git_cmd { args = { "fetch" } }
+  if ret ~= 0 then
+    Log:error "Update failed! Check the log for further information"
+    return
+  end
+
+  ret = git_cmd { args = { "diff", "--quiet", "@{upstream}" } }
+  if ret == 0 then
+    Log:info "LunarVim is already up-to-date"
+    return
+  end
+
+  ret = git_cmd { args = { "merge", "--ff-only", "--progress" } }
+  if ret ~= 0 then
+    Log:error "Update failed! Please pull the changes manually instead."
+    return
+  end
+end
+
+---Switch Lunarvim to the specified development branch
+---@param branch string
+function M.switch_lvim_branch(branch)
+  if not safe_deep_fetch() then
+    return
+  end
+  local ret = git_cmd { args = { "switch", branch } }
+  if ret ~= 0 then
+    Log:error "Unable to switch branches! Check the log for further information"
+    return
+  end
+end
+
+---Get the current Lunarvim development branch
+---@return string|nil
+function M.get_lvim_branch()
+  local ret, branch = git_cmd { args = { "branch", "--show-current" } }
+  if ret ~= 0 or (not branch or branch[1] == "") then
+    Log:error "Unable to retrieve the name of the current branch. Check the log for further information"
+    return
+  end
+  return branch[1]
+end
+
+---Get currently checked-out tag of Lunarvim
+---@param type string can be "short"
+---@return string|nil
+function M.get_lvim_tag(type)
+  type = type or ""
+  local ret, results = git_cmd { args = { "describe", "--tags" } }
+  local lvim_full_ver = results[1] or ""
+
+  if ret ~= 0 or string.match(lvim_full_ver, "%d") == nil then
+    Log:error "Unable to retrieve current tag. Check the log for further information"
+    return nil
+  end
+  if type == "short" then
+    return vim.fn.split(lvim_full_ver, "-")[1]
+  else
+    return string.sub(lvim_full_ver, 1, #lvim_full_ver - 1)
+  end
+end
+
+---Get the commit hash of currently checked-out commit of Lunarvim
+---@param type string can be "short"
+---@return string|nil
+function M.get_lvim_version(type)
+  type = type or ""
+  local branch = M.get_lvim_branch()
+  if branch == "master" then
+    return M.get_lvim_tag(type)
+  end
+  local ret, log_results = git_cmd { args = { "log", "--pretty=format:%h", "-1" } }
+  local abbrev_version = log_results[1] or ""
+  if ret ~= 0 or string.match(abbrev_version, "%d") == nil then
+    Log:error "Unable to retrieve current version. Check the log for further information"
+    return nil
+  end
+  if type == "short" then
+    return abbrev_version
+  end
+  return branch .. "-" .. abbrev_version
+end
+
+function M.generate_plugins_sha(output)
+  local list = {}
+  output = output or "commits.lua"
+
+  local core_plugins = require "lvim.plugins"
+  for _, plugin in pairs(core_plugins) do
+    local name = plugin[1]:match "/(%S*)"
+    local url = "https://github.com/" .. plugin[1]
+    print("checking: " .. name .. ", at: " .. url)
+    local retval, latest_sha = git_cmd { args = { "ls-remote", url, "origin", "HEAD" } }
+    if retval == 0 then
+      -- replace dashes, remove postfixes and use lowercase
+      local normalize_name = (name:gsub("-", "_"):gsub("%.%S+", "")):lower()
+      list[normalize_name] = latest_sha[1]:gsub("\tHEAD", "")
+    end
+  end
+  require("lvim.utils").write_file(output, "local commit = " .. vim.inspect(list), "w")
+end
+return M