Bump version for git project with npm package.json file

bump_version

#!/usr/bin/env bash

bump_version () {
    LOCKFILE="/var/lock/bump_version_for_$(basename `pwd`).lock"
    trap "{ rm -f $LOCKFILE ; return 255; }" EXIT
    
    if [[ -f $LOCKFILE ]]; then
        echo "Lockfile ${LOCKFILE} exists, clean it fist"
        return 1 
    fi
    touch $LOCKFILE
        
    if [[ ! -d ./.git ]]; then 
        echo "Neither git repository or root of the project"
        return 1
    fi
    if [[ `git status --porcelain -uno` ]]; then
        echo "Repository is not clean, clean your repo first!"
        return 1
    fi
    local LEVEL=$1
    if [[ -z ${LEVEL} ]]; then
        LEVEL="patch"
    fi
    case ${LEVEL} in 
        patch|minor|major)
            ;;
        *)
            echo "Wrong type for semver update, available only patch|minor|major"
            return 1
            ;;
    esac
    if [[ ! -e ./package.json ]]; then
        echo "File package.json is missing in the directory `pwd`"
        return 1
    fi
    git fetch origin
    if [[ $? -ne 0 ]]; then
        echo "There is origin?!"
        return 1
    fi
    git checkout develop
    git pull origin develop
    if [[ $? -ne 0 ]]; then
        echo "Failed to clean pull develop, check conflicts"
        return 1
    fi
    npm version ${LEVEL} --no-git-tag-version
    VERSION=$(cat package.json|python -c 'import json,sys;obj=json.load(sys.stdin);print(obj["version"])')
    git commit -am "chore(package): Bump version up to ${VERSION}"
    git push origin develop
    if [[ $? -ne 0 ]]; then
        echo "Failed to push develop to origin, maybe some1 did push before you?"
        return 1
    fi
    git tag "$VERSION"
    if [[ $? -ne 0 ]]; then
        echo "Failed to tag version: ${VERSION}, take a look what happen!"
        return 1
    fi
    echo "Yes Master, I'm your slave!"
    git checkout master
    git pull origin master
    if [[ $? -ne 0 ]]; then
        echo "Failed to clean pull master, did you put your dirty fingers on holly master?!"
        return 1
    fi
    git merge --no-ff --no-edit develop
    if [[ $? -ne 0 ]]; then
        echo "Failed to clean merge develop to master, check conflicts"
        return 1
    fi
    git push origin master
    if [[ $? -ne 0 ]]; then
        echo "Failed to push master to origin, some1 did it before you"
    fi
    git push --tags
    git checkout develop
}

export -f bump_version