"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.resolveClaude = resolveClaude;
exports._resetResolveClaudeCache = _resetResolveClaudeCache;
const child_process_1 = require("child_process");
const util_1 = require("util");
const execFileAsync = (0, util_1.promisify)(child_process_1.execFile);
/** Cached result after first successful resolution. */
let cachedPath = null;
/**
 * Resolves the Claude CLI executable name or path.
 *
 * Resolution order:
 * 1. `CLAUDE_PATH` environment variable (absolute path or command name)
 * 2. PATH lookup via `where` (Windows) or `which` (Unix)
 *
 * The result is cached in-memory after the first successful call so
 * subsequent invocations are synchronous-cheap.
 *
 * On Windows, `claude` is installed as `claude.cmd`. `cross-spawn` handles
 * `.cmd` wrappers transparently, so returning the bare name `"claude"` is
 * correct — cross-spawn will find and invoke `claude.cmd` automatically.
 *
 * @throws {Error} with a clear installation hint if claude cannot be found.
 */
async function resolveClaude() {
    if (cachedPath !== null) {
        return cachedPath;
    }
    // 1. Explicit override via environment variable
    const envPath = process.env.CLAUDE_PATH;
    if (envPath && envPath.trim() !== "") {
        cachedPath = envPath.trim();
        return cachedPath;
    }
    // 2. PATH lookup
    const isWindows = process.platform === "win32";
    const lookupCmd = isWindows ? "where" : "which";
    try {
        const { stdout } = await execFileAsync(lookupCmd, ["claude"], {
            timeout: 5_000,
        });
        const firstLine = stdout.trim().split(/\r?\n/)[0].trim();
        if (firstLine) {
            cachedPath = firstLine;
            return cachedPath;
        }
    }
    catch {
        // where/which returned non-zero or was not found — fall through to error
    }
    throw new Error(`Claude Code CLI not found. Install it with:\n` +
        `  npm install -g @anthropic-ai/claude-code\n` +
        `Or set CLAUDE_PATH in your .env file to the full path of the claude executable.`);
}
/**
 * Resets the in-memory cache. Intended for use in tests only.
 */
function _resetResolveClaudeCache() {
    cachedPath = null;
}
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