/**
 * Generates sendRuntimeMessage() function for injection into execution contexts.
 * Provides unified messaging API that works in both sandbox iframe and user script contexts.
 */
// biome-ignore lint/complexity/noStaticOnlyClass: fine
export class RuntimeMessageBridge {
    /**
     * Generate sendRuntimeMessage() function as injectable string.
     * Returns the function source code to be injected into target context.
     */
    static generateBridgeCode(options) {
        if (options.context === "sandbox-iframe") {
            return RuntimeMessageBridge.generateSandboxBridge(options.sandboxId);
        }
        else {
            return RuntimeMessageBridge.generateUserScriptBridge(options.sandboxId);
        }
    }
    static generateSandboxBridge(sandboxId) {
        // Returns stringified function that uses window.parent.postMessage
        return `
window.__completionCallbacks = [];
window.sendRuntimeMessage = async (message) => {
    const messageId = 'msg_' + Date.now() + '_' + Math.random().toString(36).substring(2, 9);

    return new Promise((resolve, reject) => {
        const handler = (e) => {
            if (e.data.type === 'runtime-response' && e.data.messageId === messageId) {
                window.removeEventListener('message', handler);
                if (e.data.success) {
                    resolve(e.data);
                } else {
                    reject(new Error(e.data.error || 'Operation failed'));
                }
            }
        };

        window.addEventListener('message', handler);

        window.parent.postMessage({
            ...message,
            sandboxId: ${JSON.stringify(sandboxId)},
            messageId: messageId
        }, '*');

        // Timeout after 30s
        setTimeout(() => {
            window.removeEventListener('message', handler);
            reject(new Error('Runtime message timeout'));
        }, 30000);
    });
};
window.onCompleted = (callback) => {
    window.__completionCallbacks.push(callback);
};
`.trim();
    }
    static generateUserScriptBridge(sandboxId) {
        // Returns stringified function that uses chrome.runtime.sendMessage
        return `
window.__completionCallbacks = [];
window.sendRuntimeMessage = async (message) => {
    return await chrome.runtime.sendMessage({
        ...message,
        sandboxId: ${JSON.stringify(sandboxId)}
    });
};
window.onCompleted = (callback) => {
    window.__completionCallbacks.push(callback);
};
`.trim();
    }
}
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