import type { KdCompiledWorkflowContext } from "./context-compiler.ts";

export interface ContextValidationResult {
	passed: boolean;
	errors: string[];
	warnings: string[];
}

export function validateCompiledWorkflowContext(packet: KdCompiledWorkflowContext): ContextValidationResult {
	const errors: string[] = [];
	const warnings: string[] = [];
	const focus = packet.controlFrame.focus;

	if (!packet.status.trim()) errors.push("缺少 Harness 状态。");
	if (!packet.budgetReport.includes(`focus：${focus}`)) errors.push("预算报告未匹配 control frame focus。");
	if (!packet.workingSet.trim() || packet.workingSet === "无。") errors.push("缺少 Working Set。");
	if (focus === "consistency" && packet.controlFrame.consistency.errors.length === 0) {
		errors.push("control frame focus=consistency，但 consistency report 没有 errors。");
	}
	if (focus === "blocking-question" && !packet.controlFrame.openQuestion) {
		errors.push("focus=blocking-question，但 control frame 缺少 openQuestion。");
	}
	if (focus === "blocking-question" && !/未回答问题|未回答阻断问题|Q-\d+/.test(packet.questionFacts)) {
		errors.push("focus=blocking-question，但 questionFacts 未包含 open question。");
	}
	if (focus === "resume-snapshot" && !packet.controlFrame.resumeSnapshot) {
		errors.push("focus=resume-snapshot，但 control frame 缺少 resumeSnapshot。");
	}
	if (packet.recentEvents.includes("tool.succeeded") && packet.toolResults === "无。") {
		warnings.push("ledger 存在 tool.succeeded，但 Tool Result Contracts 为空。");
	}
	if (packet.phaseArtifacts.includes("[...已截断") && !packet.budgetReport.includes("truncated=yes")) {
		warnings.push("阶段资料发生截断，但预算报告未显示截断。");
	}
	return { passed: errors.length === 0, errors, warnings };
}

export function formatContextValidation(result: ContextValidationResult): string {
	if (result.passed && result.warnings.length === 0) return "[OK] Context Pack Validation passed.";
	const lines = ["Context Pack Validation"];
	for (const error of result.errors) lines.push(`[ERROR] ${error}`);
	for (const warning of result.warnings) lines.push(`[WARN] ${warning}`);
	return lines.join("\n");
}