#!/usr/bin/env bash

#!/bin/bash

# Check if a directory argument was provided
if [ "$#" -ne 1 ]; then
    echo "Usage: $0 <directory>"
    exit 1
fi

SEARCH_DIR="$1"

# Validate that the directory exists
if [ ! -d "$SEARCH_DIR" ]; then
    echo "Error: Directory '$SEARCH_DIR' does not exist"
    exit 1
fi

echo "Starting search and replace in directory: $SEARCH_DIR"

# Function to process a file
process_file() {
    local file="$1"
    echo "Processing file: $file"
    
    # Create a backup of the original file
    cp "$file" "${file}.bak"
    
    # Use sed to perform the replacements
    # For three-item pattern: [text1', 'text2', 'text3] -> [[text1]], [[text2]], [[text3]]
    sed -i -E 's/\[(([^,'\'']*)[^,]*'\''[[:space:]]*,[[:space:]]*'\''([^,'\'']*)[^,]*'\''[[:space:]]*,[[:space:]]*'\''([^,'\'']*)[^]]*)\]/[[\2]], [[\3]], [[\4]]/g' "$file"
    
    # For two-item pattern: [text1', 'text2] -> [[text1]], [[text2]]
    sed -i -E 's/\[(([^,'\'']*)[^,]*'\''[[:space:]]*,[[:space:]]*'\''([^,'\'']*)[^]]*)\]/[[\2]], [[\3]]/g' "$file"
    
    # Check if any changes were made
    if cmp -s "$file" "${file}.bak"; then
        echo "  No changes made to $file"
        rm "${file}.bak"
    else
        echo "  Updated $file"
    fi
}

# Find all text files recursively and process them
find "$SEARCH_DIR" -type f -not -path "*/\.*" | while read -r file; do
    # Check if file contains the pattern before processing
    if grep -q "\[.*'.*,.*'.*\]" "$file" 2>/dev/null; then
        process_file "$file"
    fi
done

echo "Search and replace operation completed"