#!/bin/bash
# PHP Linting Script for Weedops Projects
# Usage: ./lint-php.sh [path-to-check]

set -euo pipefail

TARGET="${1:-.}"
SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
PHPCS_CONFIG="$SCRIPT_DIR/../linting/.phpcs.xml"

echo "Weedops PHP Linter"
echo "==================="
echo "Target: $TARGET"
echo ""

# Check for PHP syntax errors first
echo "--- PHP Syntax Check ---"
SYNTAX_ERRORS=0
while IFS= read -r -d '' file; do
    if ! php -l "$file" &>/dev/null; then
        echo "SYNTAX ERROR: $file"
        php -l "$file" 2>&1 | tail -1
        ((SYNTAX_ERRORS++))
    fi
done < <(find "$TARGET" -name "*.php" -not -path "*/vendor/*" -not -path "*/node_modules/*" -print0)

if [ "$SYNTAX_ERRORS" -eq 0 ]; then
    echo "All PHP files pass syntax check."
else
    echo ""
    echo "Found $SYNTAX_ERRORS file(s) with syntax errors!"
    exit 1
fi

echo ""

# Run PHPCS if available
echo "--- WordPress Coding Standards ---"
if command -v phpcs &> /dev/null; then
    if [ -f "$PHPCS_CONFIG" ]; then
        phpcs --standard="$PHPCS_CONFIG" "$TARGET" || true
    else
        phpcs --standard=WordPress --extensions=php --ignore=vendor,node_modules "$TARGET" || true
    fi
else
    echo "phpcs not found. Install with: composer global require squizlabs/php_codesniffer"
    echo "Running basic checks instead..."
    echo ""

    # Basic checks without PHPCS
    echo "Checking for common issues..."
    ISSUES=0

    # Check for short PHP tags
    SHORT_TAGS=$(grep -rn '<?[^p=]' "$TARGET" --include="*.php" 2>/dev/null | grep -v "<?php" | grep -v "<?=" || true)
    if [ -n "$SHORT_TAGS" ]; then
        echo "WARNING: Short PHP tags found:"
        echo "$SHORT_TAGS"
        ((ISSUES++))
    fi

    # Check for direct database queries
    DIRECT_DB=$(grep -rn '\$wpdb->query\|mysql_query\|mysqli_query' "$TARGET" --include="*.php" 2>/dev/null || true)
    if [ -n "$DIRECT_DB" ]; then
        echo "WARNING: Direct database queries found (use prepared statements):"
        echo "$DIRECT_DB"
        ((ISSUES++))
    fi

    # Check for eval usage
    EVAL_USAGE=$(grep -rn '\beval\s*(' "$TARGET" --include="*.php" 2>/dev/null || true)
    if [ -n "$EVAL_USAGE" ]; then
        echo "WARNING: eval() usage found:"
        echo "$EVAL_USAGE"
        ((ISSUES++))
    fi

    if [ "$ISSUES" -eq 0 ]; then
        echo "No common issues found."
    fi
fi

echo ""
echo "Done."