export type KdProduct = "unknown" | "flagship" | "xinghan" | "cangqiong" | "enterprise";
export type KdPlatform = "unknown" | "cosmic" | "enterprise-csharp" | "enterprise-python";
export type KdTechStack = "unknown" | "java-bos" | "java-cosmic" | "csharp-bos" | "python-bos" | "ksql";
export type KdLanguage = "unknown" | "java" | "csharp" | "python" | "sql";
export type KnowledgeScope = "common" | "flagship" | "enterprise" | "enterprise-python" | "cosmic" | "xinghan" | "cangqiong";

export interface ProductProfile {
	product: KdProduct;
	displayName: string;
	platform: KdPlatform;
	techStack: KdTechStack;
	language: KdLanguage;
	knowledgeScope: KnowledgeScope;
	requiresMetadataVerification: boolean;
	notes: string[];
}

const PROFILES: Record<KdProduct, ProductProfile> = {
	unknown: {
		product: "unknown",
		displayName: "unknown",
		platform: "unknown",
		techStack: "unknown",
		language: "unknown",
		knowledgeScope: "common",
		requiresMetadataVerification: true,
		notes: ["尚未选择产品；禁止假设插件技术栈、BOS/Cosmic 平台规则或 KSQL/SQL 交付规则。"],
	},
	flagship: {
		product: "flagship",
		displayName: "金蝶星空旗舰版",
		platform: "cosmic",
		techStack: "java-cosmic",
		language: "java",
		knowledgeScope: "flagship",
		requiresMetadataVerification: true,
		notes: [
			"星空旗舰版基于苍穹/Cosmic 平台。使用平台元数据、插件生命周期、SDK 和后置检查约束，但接口可能存在旗舰版差异。",
			"当前工作区存在 code/ 目录时，产品代码必须放在 code/ 下。",
			"创建或编辑代码前，必须检查 code/ 下真实项目结构，并跟随其实际布局；可能按云、按应用组织，也可能不分模块。",
		],
	},
	xinghan: {
		product: "xinghan",
		displayName: "金蝶星瀚",
		platform: "cosmic",
		techStack: "java-cosmic",
		language: "java",
		knowledgeScope: "xinghan",
		requiresMetadataVerification: true,
		notes: ["星瀚基于苍穹/Cosmic 平台。默认按平台 Java 插件处理，但接口可能存在星瀚差异。"],
	},
	cangqiong: {
		product: "cangqiong",
		displayName: "金蝶苍穹",
		platform: "cosmic",
		techStack: "java-cosmic",
		language: "java",
		knowledgeScope: "cangqiong",
		requiresMetadataVerification: true,
		notes: ["Cosmic 在 KCode 中按苍穹平台语境处理。使用苍穹/Cosmic 平台插件、SDK、元数据、KSQL/SQL 和生命周期规则。"],
	},
	enterprise: {
		product: "enterprise",
		displayName: "金蝶企业版",
		platform: "enterprise-csharp",
		techStack: "csharp-bos",
		language: "csharp",
		knowledgeScope: "enterprise",
		requiresMetadataVerification: true,
		notes: ["使用企业版 C# 技术栈。Java 插件规则和 Cosmic API 不适用。"],
	},
};

const PRODUCT_ALIASES: Array<[RegExp, KdProduct]> = [
	[/企业版|enterprise|csharp|c#|\.net/i, "enterprise"],
	[/星瀚|xinghan/i, "xinghan"],
	[/苍穹|cangqiong/i, "cangqiong"],
	[/cosmic|云苍穹/i, "cangqiong"],
	[/星空旗舰版|星空旗舰|旗舰版|旗舰|flagship/i, "flagship"],
];

const ENTERPRISE_PYTHON_PATTERN =
	/(?:python|py)\s*(?:插件|plugin)|(?:python|py).*?(?:插件|plugin)|ironpython|(?:企业版|enterprise|星空|金蝶云星空|BOS).*?python\s*脚本|python\s*脚本.*?(?:企业版|enterprise|星空|金蝶云星空|BOS)/i;

function enterprisePythonProfile(): ProductProfile {
	return {
		...PROFILES.enterprise,
		platform: "enterprise-python",
		techStack: "python-bos",
		language: "python",
		knowledgeScope: "enterprise-python",
		notes: [
			"只有用户明确要求 Python 插件或 IronPython 脚本时，才使用金蝶云企业版 / BOS IronPython 插件模式。",
			"企业版默认插件开发仍按 C# 处理，除非用户明确要求 Python 插件。",
			"Python 插件通过 BOS 中的 IronPython 运行，并调用 Kingdee.BOS .NET 程序集；编码前必须确认插件类型、事件、FormId、字段标识和注册步骤。",
		],
	};
}

export function profileForProduct(product: KdProduct | undefined): ProductProfile {
	return PROFILES[product ?? "unknown"] ?? PROFILES.unknown;
}

export function resolveProductProfile(input: string | undefined): ProductProfile {
	const text = input?.trim();
	if (!text) return profileForProduct("unknown");

	if (ENTERPRISE_PYTHON_PATTERN.test(text)) return enterprisePythonProfile();

	for (const [pattern, product] of PRODUCT_ALIASES) {
		if (pattern.test(text)) return profileForProduct(product);
	}

	return profileForProduct("unknown");
}

export function normalizeProduct(value: string | undefined): KdProduct {
	return resolveProductProfile(value).product;
}

export function isKnownProduct(product: KdProduct | undefined): boolean {
	return Boolean(product && product !== "unknown");
}

export function formatProductProfile(profile: ProductProfile | undefined): string {
	const resolved = profile ?? profileForProduct("unknown");
	return `${resolved.product}/${resolved.platform}/${resolved.techStack}/${resolved.language}`;
}