#!/bin/bash

# create-new-feature.sh - Spec-Driven Development Feature Creator
# Usage: ./create-new-feature.sh --json "feature description"

set -e

FEATURE_DESCRIPTION=""
JSON_OUTPUT=false

# Parse arguments
while [[ $# -gt 0 ]]; do
    case $1 in
        --json)
            JSON_OUTPUT=true
            FEATURE_DESCRIPTION="$2"
            shift 2
            ;;
        *)
            FEATURE_DESCRIPTION="$1"
            shift
            ;;
    esac
done

if [ -z "$FEATURE_DESCRIPTION" ]; then
    echo "Error: Feature description required"
    exit 1
fi

# Generate branch name from feature description
BRANCH_NAME=$(echo "$FEATURE_DESCRIPTION" | \
    tr '[:upper:]' '[:lower:]' | \
    sed 's/[^a-z0-9]/-/g' | \
    sed 's/--*/-/g' | \
    sed 's/^-\|-$//g' | \
    cut -c1-50)

# Add feature prefix if not present
if [[ ! "$BRANCH_NAME" =~ ^feature\/ ]]; then
    BRANCH_NAME="feature/$BRANCH_NAME"
fi

# Get current directory (should be repo root)
REPO_ROOT=$(pwd)
SPEC_FILE="$REPO_ROOT/.specify/specs/${BRANCH_NAME#feature/}.md"

# Create directories if they don't exist
mkdir -p "$(dirname "$SPEC_FILE")"

# Create and checkout new branch
git checkout -b "$BRANCH_NAME" 2>/dev/null || git checkout "$BRANCH_NAME"

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

## Overview
[Feature description will be populated]

## Requirements
[Requirements will be populated]

## Technical Design
[Technical design will be populated]

## Implementation Plan
[Implementation plan will be populated]

## Testing Strategy
[Testing strategy will be populated]

EOF

# Output results
if [ "$JSON_OUTPUT" = true ]; then
    echo "{\"BRANCH_NAME\":\"$BRANCH_NAME\",\"SPEC_FILE\":\"$SPEC_FILE\"}"
else
    echo "Branch created: $BRANCH_NAME"
    echo "Spec file: $SPEC_FILE"
fi