/**
 * 金蝶业务项目初始化和产品画像路径。
 * 产品画像存储在 .trellis/spec/shared/project-context.md 中。
 */
import * as fs from "node:fs";
import * as path from "node:path";

export const TRELLIS_SPEC_DIR = path.join(".trellis", "spec");
export const TRELLIS_PROJECT_SPEC = path.join(TRELLIS_SPEC_DIR, "shared", "project-context.md");

/** @deprecated 仅兼容读取旧 Trellis spec 路径 */
export const LEGACY_TRELLIS_PROJECT_SPEC = path.join(TRELLIS_SPEC_DIR, "project", "index.md");

/** @deprecated 仅兼容读取旧项目 */
export const OPENSPEC_DIR = "OpenSpec";

/** @deprecated 仅兼容读取旧 OpenSpec */
export function openspecDir(cwd: string): string {
	return path.join(cwd, OPENSPEC_DIR);
}

/** @deprecated 仅兼容读取旧 OpenSpec */
export function openspecProjectMdPath(cwd: string): string {
	return path.join(openspecDir(cwd), "project.md");
}

/** @deprecated 仅兼容读取旧 OpenSpec */
export function openspecRoadmapPath(cwd: string): string {
	return path.join(openspecDir(cwd), "roadmap.md");
}

/** 读取产品画像：Trellis spec → legacy Trellis spec → OpenSpec */
export function resolveProjectMdPath(cwd: string): string | undefined {
	const trellis = path.join(cwd, TRELLIS_PROJECT_SPEC);
	if (fs.existsSync(trellis)) return trellis;
	const legacyTrellis = path.join(cwd, LEGACY_TRELLIS_PROJECT_SPEC);
	if (fs.existsSync(legacyTrellis)) return legacyTrellis;
	const openSpec = openspecProjectMdPath(cwd);
	if (fs.existsSync(openSpec)) return openSpec;
	return undefined;
}

/** 写入产品画像：已有优先，否则新建 .trellis/spec/shared/project-context.md */
export function projectMdWritePath(cwd: string): string {
	const trellis = path.join(cwd, TRELLIS_PROJECT_SPEC);
	if (fs.existsSync(trellis)) return trellis;
	const legacyTrellis = path.join(cwd, LEGACY_TRELLIS_PROJECT_SPEC);
	if (fs.existsSync(legacyTrellis)) return legacyTrellis;
	const openSpec = openspecProjectMdPath(cwd);
	if (fs.existsSync(openSpec)) return openSpec;
	return trellis;
}