open_commit_or_default_open.lua

local M = {}

function M.open_commit_url()
  local cwd = vim.fn.getcwd()

  local function is_sha()
    local word = vim.fn.expand '<cword>'
    return word:match '^[0-9a-fA-F]+$'
  end

  local function get_github_repo_url()
    local handle = io.popen('git -C ' .. cwd .. ' remote get-url origin')
    if handle == nil then
      return nil
    end

    local result = handle:read '*a'
    if handle:close() == nil then
      return nil
    end

    if result then
      result = result:gsub('%s+$', '')
      local repo_path = result:match 'github.com[:/](.+)%.git'
      return repo_path
    end

    return nil
  end

  local repo_path = get_github_repo_url()

  if repo_path and is_sha() then
    local sha = vim.fn.expand '<cword>'
    local url = 'https://github.com/' .. repo_path .. '/commit/' .. sha
    os.execute('open ' .. url)
  else
    local uri = vim.fn.expand '<cfile>'
    vim.ui.open(uri)
  end
end

vim.api.nvim_create_user_command('OpenCommitOrDefaultOpen', M.open_commit_url, {})
vim.keymap.set('n', 'gx', ':OpenCommitOrDefaultOpen<CR>', { desc = 'Open commit or default open' })

return {}