#!/bin/bash

# create-new-feature.sh - Spec-Driven Development Feature Initialization
# Usage: create-new-feature.sh --json "feature-name"

set -e

# Parse arguments
JSON_OUTPUT=false
FEATURE_NAME=""

while [[ $# -gt 0 ]]; do
    case $1 in
        --json)
            JSON_OUTPUT=true
            shift
            ;;
        *)
            FEATURE_NAME="$1"
            shift
            ;;
    esac
done

if [[ -z "$FEATURE_NAME" ]]; then
    echo "Error: Feature name is required"
    exit 1
fi

# Clean feature name for branch
BRANCH_NAME=$(echo "$FEATURE_NAME" | sed 's/[^a-zA-Z0-9-]/-/g' | sed 's/--*/-/g' | sed 's/^-\|-$//g' | tr '[:upper:]' '[:lower:]')
SPEC_FILE="$(pwd)/.specify/specs/${BRANCH_NAME}.md"

# Ensure we're in the right directory
if [[ ! -d ".git" ]]; then
    echo "Error: Must be run from git repository root"
    exit 1
fi

# Create specs directory if it doesn't exist
mkdir -p .specify/specs

# Create and checkout new branch
git checkout -b "spec/${BRANCH_NAME}" 2>/dev/null || {
    echo "Branch spec/${BRANCH_NAME} may already exist, switching to it..."
    git checkout "spec/${BRANCH_NAME}"
}

# Create initial spec file
cat > "$SPEC_FILE" << 'EOF'
# Feature Specification Template

This file will be populated with the complete specification.

## Status
- **Created**: $(date +%Y-%m-%d)
- **Branch**: spec/BRANCH_NAME
- **Status**: Draft

## Placeholder
This is a placeholder file created by create-new-feature.sh
The complete specification will be written by the spec creation process.
EOF

# Output results
if [[ "$JSON_OUTPUT" == "true" ]]; then
    cat << EOF
{
  "status": "success",
  "branch_name": "spec/${BRANCH_NAME}",
  "spec_file": "$SPEC_FILE",
  "feature_name": "$FEATURE_NAME",
  "created_at": "$(date -Iseconds)"
}
EOF
else
    echo "✅ Feature branch created: spec/${BRANCH_NAME}"
    echo "✅ Spec file initialized: $SPEC_FILE"
    echo "Ready for specification writing."
fi