"use strict";
/**
 * DispatchLogger interface + default implementation — issue #177 (ADR-0174 P1.3).
 *
 * Interface:
 *   { onEvent(event: DispatchEvent): void }
 *
 * Default behaviour (createDefaultLogger):
 *   1. Silent on success — no stdout/stderr when result.kind === 'ok'.
 *   2. Structured JSON to stderr on error — one line per dispatch error.
 *   3. Opt-in audit file — when GSD_AUDIT=1 OR config.audit.enabled===true,
 *      appends every event (success + error) as one JSON line to
 *      .planning/.gsd-trace.jsonl relative to `cwd`. Creates .planning/ if absent.
 *   4. Args redaction — args omitted by default; included when GSD_AUDIT_ARGS=1.
 *
 * No-op logger (createNoOpLogger):
 *   Silent on all events. Used as the Hub default when no logger is injected.
 *
 * ADR-457 build-at-publish: the hand-written bin/lib/observability/logger.cjs
 * collapsed to a TypeScript source of truth. Behaviour is preserved
 * byte-for-behaviour from the prior hand-written .cjs; only types are added.
 */
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
const node_fs_1 = __importDefault(require("node:fs"));
const node_path_1 = __importDefault(require("node:path"));
const redaction_cjs_1 = require("./redaction.cjs");
const AUDIT_FILE_NAME = '.gsd-trace.jsonl';
const PLANNING_DIR = '.planning';
// ─── helpers ─────────────────────────────────────────────────────────────────
/**
 * Safely serialise a value to JSON, falling back to a placeholder on circular refs.
 */
function _safeStringify(value) {
    try {
        return JSON.stringify(value);
    }
    catch {
        return JSON.stringify({ _serializationError: true });
    }
}
/**
 * Determine whether the audit file should be written to.
 */
function _isAuditEnabled(config) {
    if (process.env['GSD_AUDIT'] === '1')
        return true;
    if (config && config.audit && config.audit.enabled === true)
        return true;
    return false;
}
/**
 * Build the redacted plain object for the audit file.
 * Preserves the full DispatchEvent structure.
 */
function _toAuditRecord(event) {
    return (0, redaction_cjs_1.redactEvent)(event);
}
/**
 * Build the flattened stderr error line.
 *
 * Per ADR-0174 P1.3 contract: { "kind": "<variant>", "traceId": "<uuid>", ...typedPayload }
 * The result's kind is promoted to top-level and the typed payload fields are spread in.
 * The `result` wrapper is removed.
 */
function _toStderrRecord(event) {
    const redacted = (0, redaction_cjs_1.redactEvent)(event);
    const { result, ...eventWithoutResult } = redacted;
    // Flatten: top-level gets kind + typed payload fields from result
    const resultObj = result;
    const { kind, ...typedPayload } = resultObj;
    return Object.assign({}, eventWithoutResult, { kind }, typedPayload);
}
/**
 * Append one JSON line to the audit file.
 * Creates .planning/ directory if it does not exist.
 *
 * Uses synchronous fs API (crash-safe for v1 — dispatch is synchronous).
 */
function _appendAuditLine(cwd, event) {
    const planningDir = node_path_1.default.join(cwd, PLANNING_DIR);
    // Ensure the directory exists
    if (!node_fs_1.default.existsSync(planningDir)) {
        node_fs_1.default.mkdirSync(planningDir, { recursive: true });
    }
    const auditPath = node_path_1.default.join(planningDir, AUDIT_FILE_NAME);
    node_fs_1.default.appendFileSync(auditPath, _safeStringify(event) + '\n', 'utf8');
}
/**
 * Create a no-op logger. All events are silently dropped.
 * This is the Hub's default when no logger is injected by the caller.
 */
function createNoOpLogger() {
    return {
        onEvent(_event) {
            // intentionally empty
        },
    };
}
/**
 * Create the default DispatchLogger.
 */
function createDefaultLogger({ cwd = process.cwd(), config } = {}) {
    return {
        /**
         * @param event - A DispatchEvent from the Hub.
         */
        onEvent(event) {
            const resultObj = event && event['result'];
            const isOk = resultObj && resultObj['kind'] === 'ok';
            // ── Audit file (both ok and error) ────────────────────────────────────
            if (_isAuditEnabled(config)) {
                try {
                    const auditRecord = _toAuditRecord(event);
                    _appendAuditLine(cwd, auditRecord);
                }
                catch (auditErr) {
                    // Audit errors must not surface to callers
                    process.stderr.write(_safeStringify({
                        level: 'warn',
                        source: 'DispatchLogger',
                        message: 'audit file write failed: ' + String(auditErr?.message ?? auditErr),
                    }) + '\n');
                }
            }
            // ── Stderr on error ───────────────────────────────────────────────────
            if (!isOk) {
                try {
                    const stderrRecord = _toStderrRecord(event);
                    process.stderr.write(_safeStringify(stderrRecord) + '\n');
                }
                catch (stderrErr) {
                    // Last-resort: we cannot throw from the logger
                    process.stderr.write(_safeStringify({
                        level: 'warn',
                        source: 'DispatchLogger',
                        message: 'stderr emit failed: ' + String(stderrErr?.message ?? stderrErr),
                    }) + '\n');
                }
            }
            // ── Silent on success (no else branch needed) ─────────────────────────
        },
    };
}
module.exports = { createDefaultLogger, createNoOpLogger };