import { dirname, resolve } from 'node:path';
import { fileURLToPath } from 'node:url';
export async function resolveExtensionPath(flagPath, options = {}) {
    const cwd = options.cwd ?? process.cwd();
    const env = options.env ?? process.env;
    const moduleUrl = options.moduleUrl ?? import.meta.url;
    // 1. Explicit flag
    if (flagPath) {
        return resolve(cwd, flagPath);
    }
    // 2. Env var
    const envPath = env.AGENTUITY_CODER_EXTENSION;
    if (envPath) {
        return resolve(cwd, envPath);
    }
    // 3. Bundled with CLI package (require.resolve)
    try {
        const cliDir = fileURLToPath(new URL('.', moduleUrl));
        const entryPath = require.resolve('@agentuity/coder-tui', { paths: [cliDir] });
        let dir = dirname(entryPath);
        while (dir !== dirname(dir)) {
            if (await Bun.file(resolve(dir, 'package.json')).exists())
                return dir;
            dir = dirname(dir);
        }
    }
    catch {
        // require.resolve may fail in workspace/worktree setups — fall through to direct lookup
    }
    // 4. Direct node_modules lookup (workspace symlink fallback)
    try {
        const cliDir = fileURLToPath(new URL('.', moduleUrl));
        // Walk up from this file to the CLI package root, then check node_modules
        let dir = cliDir;
        for (let i = 0; i < 10; i++) {
            const candidate = resolve(dir, 'node_modules', '@agentuity', 'coder-tui');
            if (await Bun.file(resolve(candidate, 'package.json')).exists())
                return candidate;
            const parent = dirname(dir);
            if (parent === dir)
                break;
            dir = parent;
        }
    }
    catch {
        // ignore
    }
    return null;
}
export async function resolveExtensionRuntimeModulePath(extensionPath) {
    const sourceModulePath = resolve(extensionPath, 'src', 'remote-tui.ts');
    if (await Bun.file(sourceModulePath).exists())
        return sourceModulePath;
    const distModulePath = resolve(extensionPath, 'dist', 'remote-tui.js');
    if (await Bun.file(distModulePath).exists())
        return distModulePath;
    return null;
}
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