/*---------------------------------------------------------------------------------------------
 *  Copyright (c) Microsoft Corporation. All rights reserved.
 *--------------------------------------------------------------------------------------------*/

/**
 * Generates SDK protocol version constants for all SDK languages.
 *
 * Reads from sdk-protocol-version.json and generates:
 * - nodejs/src/sdkProtocolVersion.ts
 * - go/sdk_protocol_version.go
 * - python/copilot/_sdk_protocol_version.py
 * - dotnet/src/SdkProtocolVersion.cs
 * - rust/src/sdk_protocol_version.rs
 * - java/sdk/src/main/java/com/github/copilot/SdkProtocolVersion.java
 *
 * Run this script whenever the protocol version changes.
 */

import fs from "node:fs";
import path from "node:path";
import { fileURLToPath } from "node:url";
import versionFile from "../../sdk-protocol-version.json" with { type: "json" };

const __filename = fileURLToPath(import.meta.url);
const __dirname = path.dirname(__filename);
const rootDir = path.join(__dirname, "..", "..");

const version = versionFile.version;

console.log(`Generating SDK protocol version constants for version ${version}...`);

// Generate TypeScript
const tsCode = `/*---------------------------------------------------------------------------------------------
 *  Copyright (c) Microsoft Corporation. All rights reserved.
 *--------------------------------------------------------------------------------------------*/

// Code generated by update-protocol-version.ts. DO NOT EDIT.

/**
 * The SDK protocol version.
 * This must match the version expected by the copilot-agent-runtime server.
 */
export const SDK_PROTOCOL_VERSION = ${version};

/**
 * Gets the SDK protocol version.
 * @returns The protocol version number
 */
export function getSdkProtocolVersion(): number {
    return SDK_PROTOCOL_VERSION;
}
`;
fs.writeFileSync(path.join(rootDir, "nodejs", "src", "sdkProtocolVersion.ts"), tsCode);
console.log("  ✓ nodejs/src/sdkProtocolVersion.ts");

// Generate Go
const goCode = `// Code generated by update-protocol-version.ts. DO NOT EDIT.

package copilot

// SDKProtocolVersion is the SDK protocol version.
// This must match the version expected by the copilot-agent-runtime server.
const SDKProtocolVersion = ${version}

// GetSDKProtocolVersion returns the SDK protocol version.
func GetSDKProtocolVersion() int {
	return SDKProtocolVersion
}
`;
fs.writeFileSync(path.join(rootDir, "go", "sdk_protocol_version.go"), goCode);
console.log("  ✓ go/sdk_protocol_version.go");

// Generate Python
const pythonCode = `# Code generated by update-protocol-version.ts. DO NOT EDIT.

"""
SDK Protocol Version for the Copilot SDK.

This must match the version expected by the copilot-agent-runtime server.
"""

SDK_PROTOCOL_VERSION = ${version}


def get_sdk_protocol_version() -> int:
    """
    Gets the SDK protocol version.

    Returns:
        The protocol version number
    """
    return SDK_PROTOCOL_VERSION
`;
fs.writeFileSync(path.join(rootDir, "python", "copilot", "_sdk_protocol_version.py"), pythonCode);
console.log("  ✓ python/copilot/_sdk_protocol_version.py");

// Generate C#
const csharpCode = `// Code generated by update-protocol-version.ts. DO NOT EDIT.

namespace GitHub.Copilot;

/// <summary>
/// Provides the SDK protocol version.
/// This must match the version expected by the copilot-agent-runtime server.
/// </summary>
internal static class SdkProtocolVersion
{
    /// <summary>
    /// The SDK protocol version.
    /// </summary>
    private const int Version = ${version};

    /// <summary>
    /// Gets the SDK protocol version.
    /// </summary>
    public static int GetVersion() => Version;
}
`;
fs.writeFileSync(path.join(rootDir, "dotnet", "src", "SdkProtocolVersion.cs"), csharpCode);
console.log("  ✓ dotnet/src/SdkProtocolVersion.cs");

// Generate Rust
const rustCode = `// Code generated by update-protocol-version.ts. DO NOT EDIT.

//! The SDK protocol version. Must match the version expected by the
//! copilot-agent-runtime server.

/// The SDK protocol version.
pub const SDK_PROTOCOL_VERSION: u32 = ${version};

/// Returns the SDK protocol version.
#[must_use]
pub const fn get_sdk_protocol_version() -> u32 {
    SDK_PROTOCOL_VERSION
}
`;
fs.writeFileSync(path.join(rootDir, "rust", "src", "sdk_protocol_version.rs"), rustCode);
console.log("  ✓ rust/src/sdk_protocol_version.rs");

const javaCode = `/*---------------------------------------------------------------------------------------------
 *  Copyright (c) Microsoft Corporation. All rights reserved.
 *--------------------------------------------------------------------------------------------*/

// Code generated by update-protocol-version.ts. DO NOT EDIT.

package com.github.copilot;

/**
 * Provides the SDK protocol version. This must match the version expected by
 * the copilot-agent-runtime server.
 *
 * @since 1.0.0
 */
public enum SdkProtocolVersion {

    LATEST(${version});

    private int versionNumber;

    private SdkProtocolVersion(int versionNumber) {
        this.versionNumber = versionNumber;
    }

    public int getVersionNumber() {
        return this.versionNumber;
    }

    /**
     * Gets the SDK protocol version.
     *
     * @return the protocol version
     */
    public static int get() {
        return LATEST.getVersionNumber();
    }
}
`;
fs.writeFileSync(
    path.join(rootDir, "java/sdk/src/main/java/com/github/copilot/SdkProtocolVersion.java"),
    javaCode
);
console.log("  ✓ java/sdk/src/main/java/com/github/copilot/SdkProtocolVersion.java");

console.log("Done!");