#!/usr/bin/env bash
# Git-related helpers.

# --- Checkout master
master () {
  # Get back to master branch
  git checkout master
  # Update local master
  git pull
}

# --- Create a new feature branch
feat () {
  # Check if the argument is set
  if [ "$1" = "" ]; then
    echo "Usage: $0 <feature-name>" 1>&2
    return
  fi
  # Make sure we start from master
  git checkout master
  # And make sure our local master is up to date
  git pull
  # Then create new branch
  git checkout -b "feat/$1"
}

# --- Open in browser (GitHub/GitLab)
browse () {
  # Open browser
  open "$(_git_repo_url)"
}

# --- Open new PR/MR for current branch
pr () {
  # Get Git remote
  REMOTE=$(git remote get-url --push origin)
  # Depending on github.com/gitlab.com being present, open correct URL
  if [[ "$REMOTE" == *"gitlab.com"* ]]; then
    open "$(_git_repo_url)/-/merge_requests/new?merge_request%5Bsource_branch%5D=$(git rev-parse --abbrev-ref HEAD)"
  else
    open "$(_git_repo_url)/compare/$(git rev-parse --abbrev-ref HEAD)?expand=1"
  fi
}

# --- Clean branches
cleanbranches () {
  # Fetch and prune
  git fetch --all --prune --prune-tags
  # Delete merged brances
  git branch --merged | egrep -v "(^\*|master|dev|release)" | xargs git branch -d
  # Run garbage collection
  git gc
}

# --- Helper function to determine repo URL
_git_repo_url () {
  # Get remote URL for origin
  REMOTE="$(git remote get-url --push origin)"
  # Check for HTTP/HTTPS urls
  if [[ "${REMOTE}" == *"https://"* ]]; then
    echo "${REMOTE%.git}"
  elif [[ "${REMOTE}" == *"http://"* ]]; then
    echo "${REMOTE%.git}"
  # Or gitlab SSH-style origin
  elif [[ "${REMOTE}" == *"gitlab.com"* ]]; then
    REMOTE="${REMOTE##*:}"
    echo "https://gitlab.com/${REMOTE%.git}"
  # Or github SSH-style origin
  elif [[ "${REMOTE}" == *"github.com"* ]]; then
    REMOTE="${REMOTE##*:}"
    echo "https://github.com/${REMOTE%.git}"
  fi
}