create_pr_from_cli.sh

# Create pull request from your branch to target branch

# USAGE
# Switch for branch you want to make Pull request
# bash create_pr_from_cli.sh <target_branch> <OPTIONAL_pr_message>

# Limitation one script allows you to make PR for one repository.
# You can change this easily.
# TODO
PROJECTNAME="ProjectName"

# Also There is way to get this variable automatically
# but it's not necessary since that not going to change so much
# TODO
USERNAME="~Yourusername"


# TODO Write your domain here
DOMAIN="https://example.net"

TARGETBRANCH=$1
COMMITDESCRIPTION=$2

# Get current branch name
CURRENTBRANCH=$(git branch | grep \* | cut -d ' ' -f2)

# Get the repository name
# NOTE I assume you use same folder name as main project another case you need to also fix here.
REPOSITORYNAME="$( basename `git rev-parse --show-toplevel` )"


# If there is not any pr_message Branch name will be description
if [ -z "$COMMITDESCRIPTION"];
then
    COMMITDESCRIPTION=$CURRENTBRANCH
    echo $COMMITDESCRIPTION
fi

# TODO Change with your reviewers
# NOTE may some parts of the json is not necessary(like active, approved, status)
# I didn't test what it can be without them so I leave it how I use.
# Maybe you can make test and inform me about it :)
generate_post_data()
{
    cat <<EOF
{
 "title": "$COMMITDESCRIPTION",
  "description": "$COMMITDESCRIPTION",
  "state": "OPEN",
  "open": true,
  "closed": false,
  "reviewers": [
    {
      "user": {
        "name": "user1",
        "emailAddress": "[email protected]",
        "id": 1984,
        "displayName": "User1 LastName1",
        "active": true,
        "slug": "example",
        "type": "NORMAL",
        "links": {
          "self": [
            {
              "href": "https://example.net/git/users/example"
            }
          ]
        }
      },
      "role": "REVIEWER",
      "approved": false,
      "status": "UNAPPROVED"
    },
   {
      "user": {
        "name": "user2",
        "emailAddress": "[email protected]",
        "id": 1984,
        "displayName": "User2 LastName2",
        "active": true,
        "slug": "example2",
        "type": "NORMAL",
        "links": {
          "self": [
            {
              "href": "https://example.net/git/users/example2"
            }
          ]
        }
      },
      "role": "REVIEWER",
      "approved": false,
      "status": "UNAPPROVED"
    }
  ],
  "fromRef": {
    "id": "refs/heads/$CURRENTBRANCH",
    "repository": {
      "slug": "$REPOSITORYNAME",
      "name": null,
      "project": {
        "key": "$USERNAME"
      }
    }
  },
  "toRef": {
    "id": "refs/heads/$TARGETBRANCH",
    "repository": {
      "slug": "$REPOSITORYNAME",
      "name": null,
      "project": {
        "key": "$PROJECTNAME"
      }
    }
  },
  "close_source_branch": false
}
EOF

}

echo "Base Branch             >>>> $CURRENTBRANCH"
echo "Target  Branch          >>>> $TARGETBRANCH"
echo "Repository name         >>>> $REPOSITORYNAME"
echo "Commit Message will be  >>>> $COMMITDESCRIPTION"
read -p "Press Enter to continue" </dev/tty

# TODO
curl -u YourAweomeUsername:YourAwesomePassword $DOMAIN/git/rest/api/1.0/projects/$PROJECTNAME/repos/$REPOSITORYNAME/pull-requests \
             --request POST \
             --header 'Content-Type: application/json' \
             --data "$(generate_post_data)"