#!/bin/bash

# Usage notes for gpush script
#
# This script automates the process of committing and pushing changes to a git repository.
# It also supports creating and pushing tags.
#
# Features:
# - Automatically detects if you're in a git repository
# - Shows current repository info (URL, tag, branch)
# - Allows custom commit messages
# - Supports custom remote and branch targets
# - Option to create and push tags
#
# Usage:
#   ./gpush [default_commit_message]
#
# Examples:
#   ./gpush                           # Run with no default commit message
#   ./gpush "Fixed bug in login flow" # Run with a default commit message
#
# The script will prompt for:
# - Commit message (uses default if provided, can be changed)
# - Remote name (defaults to 'origin')
# - Branch name (defaults to current branch)
# - Tag name (optional, no tag created if left blank)
#
# After confirming the actions, it will:
# 1. Add all changes (git add .)
# 2. Commit with your message (git commit -am "message")
# 3. Push to your specified remote/branch (git push remote branch)
# 4. Create and push tag if specified

# Check if the current directory is a git repository
if ! git rev-parse --is-inside-work-tree > /dev/null 2>&1; then
    echo "Error: Not a git repository."
    exit 1
fi

# Gather info
# Note: not capturing git log message because of colour loss.
repo=$(git remote get-url origin)
currTag=$(git describe --tags)
currBranch=$(git rev-parse --abbrev-ref HEAD) # $(git branch | sed -n -e 's/^\* \(.*\)/\1/p')
inputCommit=$1
if [ -z $currBranch ]
then
    currBranch='master'
fi

echo "Commit Changes and Push to Git Repository"
echo "--------------------------------------------------------------------------------"
git log -1
echo ""
echo "Repository : $repo"
echo "Current Tag: $currTag"
echo "--------------------------------------------------------------------------------"
echo "Commands will be executed in batch at the after confirmation."
echo "Press Ctrl-C at any point to cancel all actions."
echo ""
read -p "Input commit message (default: $inputCommit): " commit
read -p "Input remote (default: origin): " remote
read -p "Input branch (current: $currBranch): " branch
read -p "Input tag (default: no tag): " tag
remote=${remote:-origin}
branch=${branch:-$currBranch}
commit=${commit:-$inputCommit}
echo "--------------------------------------------------------------------------------"
echo "Prepared command(s):"
echo ""
if [ "$commit" ]
then
    echo "  git add .";
    echo "  git commit -am \"$commit\""
fi
echo "  git push $remote $branch";
if [ "$tag" ]
then
    echo "  git tag \"$tag\""
    echo "  git push $remote --tags"
fi
echo ""
echo "Enter to execute:"
read confirm
echo "--------------------------------------------------------------------------------"
if [ "$commit" ]
then
    git add .
    git commit -am "$commit"
    git push "$remote" "$branch"
    if [ "$tag" ]; then
        git tag "$tag"
        git push "$remote" "$tag"
    fi
    #git push $remote $branch --tags
fi