/**
 * Config loading — thin wrappers over the unified loader.
 *
 * These functions preserve the existing snake_case return shapes
 * (`OrchestratorConfig`, `TaskRunnerConfig` from types.ts) so all
 * downstream consumers remain unchanged during the JSON migration.
 *
 * The unified loader (`loadProjectConfig`) handles JSON-first loading
 * with YAML fallback and defaults merging.
 *
 * @module orch/config
 */

import {
	loadProjectConfig,
	toOrchestratorConfig,
	toTaskRunnerConfig,
	hasConfigFiles,
} from "./config-loader.ts";
export { hasConfigFiles, resolveConfigRoot } from "./config-loader.ts";
import type { OrchestratorConfig, TaskRunnerConfig } from "./types.ts";
import type { SupervisorConfig } from "./supervisor.ts";
import { DEFAULT_SUPERVISOR_CONFIG } from "./supervisor.ts";

// ── Config Loading ───────────────────────────────────────────────────

/**
 * Load orchestrator config.
 *
 * Reads `.pi/orchid-config.json` first; falls back to
 * `.pi/task-orchestrator.yaml` + `.pi/task-runner.yaml`; then defaults.
 *
 * In workspace mode, `pointerConfigRoot` (from the resolved pointer file)
 * is inserted into the config resolution chain between cwd-local and
 * TASKPLANE_WORKSPACE_ROOT. See `resolveConfigRoot()` in config-loader.ts.
 *
 * Returns the legacy `OrchestratorConfig` (snake_case) shape.
 */
export function loadOrchestratorConfig(
	cwd: string,
	pointerConfigRoot?: string,
): OrchestratorConfig {
	const unified = loadProjectConfig(cwd, pointerConfigRoot);
	return toOrchestratorConfig(unified);
}

/**
 * Load task-runner config (orchestrator subset: task_areas + reference_docs).
 *
 * Reads `.pi/orchid-config.json` first; falls back to
 * `.pi/task-runner.yaml`; then defaults.
 *
 * In workspace mode, `pointerConfigRoot` (from the resolved pointer file)
 * is inserted into the config resolution chain between cwd-local and
 * TASKPLANE_WORKSPACE_ROOT. See `resolveConfigRoot()` in config-loader.ts.
 *
 * Returns the legacy `TaskRunnerConfig` (snake_case) shape.
 */
export function loadTaskRunnerConfig(cwd: string, pointerConfigRoot?: string): TaskRunnerConfig {
	const unified = loadProjectConfig(cwd, pointerConfigRoot);
	return toTaskRunnerConfig(unified);
}

/**
 * Load supervisor config from unified project config.
 *
 * Extracts the `orchestrator.supervisor` section from the unified config.
 * Falls back to defaults if the section is missing (backward compatibility
 * with configs created before TP-041).
 *
 * @since TP-041
 */
export function loadSupervisorConfig(cwd: string, pointerConfigRoot?: string): SupervisorConfig {
	const unified = loadProjectConfig(cwd, pointerConfigRoot);
	const section = unified.orchestrator.supervisor;
	if (!section) return { ...DEFAULT_SUPERVISOR_CONFIG };
	return {
		model: section.model ?? DEFAULT_SUPERVISOR_CONFIG.model,
		autonomy: section.autonomy ?? DEFAULT_SUPERVISOR_CONFIG.autonomy,
	};
}