Migrate git repos from Azure Devops to github

migrategitfromazuredevopstogithub.ps1

# how i moved all of my git repos from azure devops to github

# prereqs
# azure cli - https://docs.microsoft.com/en-us/cli/azure
# github cli - https://cli.github.com/

# note: you can get away with neither of these if you want
#  to manually make some lists and repos yourself

# we'll be creating local clones of everything to work with
#  i'm going to use an empty directory i already have created c:\gh
#  let's switch over there before we start...
cd \gh

# login 
az login

# get a list of projects, so we can get all the repos
$projects = (az devops project list | convertfrom-json).value

# get repos from each project
$repos = foreach($project in $projects){
	az repos list --project $project.name |
	convertfrom-json | %{$_}
}

#output a sorted version of this
$repos | sort weburl | select weburl,name | epcsv repos.csv

#cleanup repos.csv to taste, i had a lot of archived items to skip

# get a wip list of repos
$wiprepos = ipcsv repos.csv

# clone each repo using weburl, this may take a few moments
$wiprepos.weburl | %{git clone $_}

#in my case, some of my repos were using master for the default branch
# i have this changed for some and on github i am already using main
# but a lot of these are old repos and are using master and i wanted
# to swap it, so i'll go ahead and do that here first.
# i suppose this is a mini 'how-to' for switching all of your repos on
# on devops to main from master

$wiprepos.name | %{
    
  #switch to the current repo
	cd $_

  #get the current branch
  # this should be the default since we just cloned all of these
  # that means if master is default, we'll be in it currently
  $cb = git branch --show-current

  #if our current branch is master, convert to main and update az repos
  # you may want to echo the following commands, i have already copy
  # and pasted these a bunch of times previously while changing some of these
  if($cb -eq 'master'){
    git branch -m master main
    git push -u origin main
    git push origin --delete master
    az repos update --repository (split-path .\ -leaf) --default-branch main
  }
  
  #switch back to our wip dir
	cd \gh
  
}


#now that our branches and default branch are done, it's time to setup our github repos
$org = 'yourgithuborg' # you can leave out org and it will just create them in your user
$wiprepos.name | %{
    
  #switch to the current repo
  cd $_

  # remove old origin, create a repo, reassociate and push
  git remote rm origin
  gh repo create $org/$_ --private --confirm
  git push --set-upstream origin main
   
  #switch back to our wip dir
	cd \gh
    
}