#!/bin/bash

# Initializes a git repository and pushes to a remote using credentials from a config file
#
# Usage: ./git-init-from-config.sh <config-file>
#
# Config file format (one value per line):
#   GIT_URL=https://github.com/user/repo.git
#   GIT_USER=username
#   GIT_TOKEN=your_token_or_password
#
# The branch name will be read from the VERSION file (first line)

set -e

if [ -z "$1" ]; then
    echo "Usage: $0 <config-file>"
    echo ""
    echo "Config file format:"
    echo "  GIT_URL=https://github.com/user/repo.git"
    echo "  GIT_USER=username"
    echo "  GIT_TOKEN=your_token_or_password"
    echo "  GIT_BRANCH=main (optional)"
    exit 1
fi

CONFIG_FILE="$1"

if [ ! -f "$CONFIG_FILE" ]; then
    echo "Error: Config file '$CONFIG_FILE' not found"
    exit 1
fi

# Load config file
source "$CONFIG_FILE"

# Validate required fields
if [ -z "$GIT_URL" ]; then
    echo "Error: GIT_URL not defined in config file"
    exit 1
fi

if [ -z "$GIT_USER" ]; then
    echo "Error: GIT_USER not defined in config file"
    exit 1
fi

if [ -z "$GIT_TOKEN" ]; then
    echo "Error: GIT_TOKEN not defined in config file"
    exit 1
fi

# Read version from VERSION file (first line)
if [ ! -f "VERSION" ]; then
    echo "Error: VERSION file not found in current directory"
    exit 1
fi

GIT_BRANCH=$(head -n 1 VERSION)

if [ -z "$GIT_BRANCH" ]; then
    echo "Error: VERSION file is empty"
    exit 1
fi

echo "Version detected: $GIT_BRANCH"

# Build authenticated URL
# Extract protocol and rest of URL
if [[ "$GIT_URL" == https://* ]]; then
    URL_WITHOUT_PROTOCOL="${GIT_URL#https://}"
    AUTH_URL="https://${GIT_USER}:${GIT_TOKEN}@${URL_WITHOUT_PROTOCOL}"
elif [[ "$GIT_URL" == http://* ]]; then
    URL_WITHOUT_PROTOCOL="${GIT_URL#http://}"
    AUTH_URL="http://${GIT_USER}:${GIT_TOKEN}@${URL_WITHOUT_PROTOCOL}"
else
    echo "Error: URL must start with http:// or https://"
    exit 1
fi

echo "Initializing git repository..."
git init

echo "Adding all files..."
git add .

echo "Creating initial commit..."
git commit -m "Initial commit" || echo "Nothing to commit or already committed"

echo "Setting branch to $GIT_BRANCH..."
git branch -M "$GIT_BRANCH"

echo "Adding remote origin..."
git remote remove origin 2>/dev/null || true
git remote add origin "$AUTH_URL"

echo "Pushing to remote..."
git push -u origin "$GIT_BRANCH"

echo ""
echo "Done! Repository pushed to $GIT_URL on branch $GIT_BRANCH"