content: (*
  Copyright (c) 2015-present, Facebook, Inc.
  This source code is licensed under the MIT license found in the
  LICENSE file in the root directory of this source tree.
  *)
  
  property targetTab: null
  property targetTabIndex: -1
  property targetWindow: null
  
  on run argv
      set theURL to item 1 of argv
  
      tell application "Chrome"
  
          if (count every window) = 0 then
              make new window
          end if
  
          -- 1: Looking for tab running debugger
          -- then, Reload debugging tab if found
          -- then return
          set found to my lookupTabWithUrl(theURL)
          if found then
              set targetWindow's active tab index to targetTabIndex
              tell targetTab to reload
              tell targetWindow to activate
              set index of targetWindow to 1
              return
          end if
  
          -- 2: Looking for Empty tab
          -- In case debugging tab was not found
          -- We try to find an empty tab instead
          set found to my lookupTabWithUrl("chrome://newtab/")
          if found then
              set targetWindow's active tab index to targetTabIndex
              set URL of targetTab to theURL
              tell targetWindow to activate
              return
          end if
  
          -- 3: Create new tab
          -- both debugging and empty tab were not found
          -- make a new tab with url
          tell window 1
              activate
              make new tab with properties {URL:theURL}
          end tell
      end tell
  end run
  
  -- Function:
  -- Lookup tab with given url
  -- if found, store tab, index, and window in properties
  -- (properties were declared on top of file)
  on lookupTabWithUrl(lookupUrl)
      tell application "Chrome"
          -- Find a tab with the given url
          set found to false
          set theTabIndex to -1
          repeat with theWindow in every window
              set theTabIndex to 0
              repeat with theTab in every tab of theWindow
                  set theTabIndex to theTabIndex + 1
                  if (theTab's URL as string) contains lookupUrl then
                      -- assign tab, tab index, and window to properties
                      set targetTab to theTab
                      set targetTabIndex to theTabIndex
                      set targetWindow to theWindow
                      set found to true
                      exit repeat
                  end if
              end repeat
  
              if found then
                  exit repeat
              end if
          end repeat
      end tell
      return found
  end lookupTabWithUrl