// Extension initialization
chrome.runtime.onInstalled.addListener(() => {
    console.log("Word Replacer Addon installed.");
    
    // Set default replacements if they don't already exist
    chrome.storage.local.get('wordReplacements', (data) => {
        if (!data.wordReplacements) {
            chrome.storage.local.set({
                wordReplacements: {
                    "oldWord1": "newWord1",
                    "oldWord2": "newWord2",
                    "oldWord3": "newWord3"
                }
            });
        }
    });
});

// Data cleanup when possible
function cleanupStorageData() {
    chrome.storage.local.clear(() => {
        console.log("Extension storage cleared.");
    });
}

// For Firefox we can use onSuspend which is called when the extension process
// is terminated (can happen on deactivation or uninstallation)
chrome.runtime.onSuspend.addListener(() => {
    console.log("Word Replacer Addon terminated.");
    // Uncomment the following line if you want to remove all data on suspension
    // cleanupStorageData();
});

// Add a command to manually clean the data
chrome.runtime.onMessage.addListener((message, sender, sendResponse) => {
    if (message.action === 'getReplacements') {
        chrome.storage.local.get('wordReplacements', (data) => {
            sendResponse(data.wordReplacements || {});
        });
        return true; // Required for asynchronous sendResponse
    }
    
    // New command to clean the data
    if (message.action === 'clearStorageData') {
        cleanupStorageData();
        sendResponse({success: true});
        return true;
    }
});