example.sh

#!/bin/bash
# Example workflow demonstrating MVCS functionality

set -e

echo "=== MVCS Example Workflow ==="
echo

# Save the mvcs directory
MVCS_DIR="$(pwd)"
MVCS_BIN="$MVCS_DIR/mvcs"

# Build MVCS
echo "Step 1: Building MVCS..."
make clean && make
if [ $? -ne 0 ]; then
    echo "Build failed!"
    exit 1
fi
echo

# Create a test directory
echo "Step 2: Creating test directory..."
rm -rf /tmp/mvcs-demo
mkdir -p /tmp/mvcs-demo
cd /tmp/mvcs-demo
echo

# Initialize repository
echo "Step 3: Initializing repository..."
$MVCS_BIN init
echo

# Create some files
echo "Step 4: Creating files..."
echo "This is the README file." > README.md
echo "print('Hello, World!')" > hello.py
echo "int main() { return 0; }" > main.c
ls -l
echo

# Add files to staging
echo "Step 5: Adding files to staging area..."
export MVCS_AUTHOR="John Doe <john@example.com>"
$MVCS_BIN add README.md
$MVCS_BIN add hello.py
$MVCS_BIN add main.c
echo

# Check index
echo "Step 6: Checking staging area (index file)..."
cat .mvcs/index
echo

# Create first commit
echo "Step 7: Creating first commit..."
$MVCS_BIN commit "Initial commit with project files"
echo

# Modify a file
echo "Step 8: Modifying a file..."
echo "print('Hello, MVCS!')" > hello.py
echo

# Stage the change
echo "Step 9: Staging the modification..."
$MVCS_BIN add hello.py
echo

# Create second commit
echo "Step 10: Creating second commit..."
export MVCS_AUTHOR="Jane Smith <jane@example.com>"
$MVCS_BIN commit "Update hello.py with MVCS greeting"
echo

# View commit history
echo "Step 11: Viewing commit history..."
$MVCS_BIN log
echo

# Inspect objects
echo "Step 12: Inspecting objects..."
echo

# Get hash of hello.py
HASH=$($MVCS_BIN hash-object hello.py)
echo "Hash of hello.py: $HASH"
echo

# View the blob
echo "Blob content:"
$MVCS_BIN cat-file $HASH
echo

# Get first commit hash (from log output)
echo "Step 13: Viewing commit and tree objects..."
# Find the second (first) commit hash from refs
if [ -f .mvcs/refs/heads/master ]; then
    CURRENT_COMMIT=$(cat .mvcs/refs/heads/master)
    echo "Current commit: $CURRENT_COMMIT"
    echo
    echo "Commit object:"
    $MVCS_BIN cat-file $CURRENT_COMMIT
    echo
fi

echo "Step 14: Repository structure..."
echo "Directory tree:"
find .mvcs -type f | sort
echo

echo "=== Demo Complete ==="