import { inspectGate } from "./gates.ts";
import type { ActiveRun } from "./types.ts";
import { buildControlFrame } from "./control-frame.ts";
import { evaluateRequiredFactsContract } from "./data-source-policy.ts";
import { formatNextAction } from "./next-action.ts";

export function formatPlanReadiness(cwd: string, run: ActiveRun): string {
	const blockers: string[] = [];
	const openQuestions = (run.questions ?? []).filter((question) => question.status === "open" && question.blocking);
	if (openQuestions.length > 0) blockers.push(`存在 open blocking question：${openQuestions.map((question) => question.id).join(", ")}`);
	const gate = inspectGate(cwd, run);
	if (!gate.passed) blockers.push(`当前门禁阻塞：${gate.reason ?? "未说明原因"}`);
	const factsContract = evaluateRequiredFactsContract(cwd, run);
	for (const issue of factsContract.issues.slice(0, 5)) {
		blockers.push(`${issue.contract} 缺口：${issue.missing.slice(0, 3).join("、")}`);
	}
	const canCode = run.phase === "execute" && blockers.length === 0;
	const frame = buildControlFrame(cwd, run, "readiness");
	return [
		`status：${canCode ? "ready-to-execute" : "not-ready"}`,
		`phase：${run.phase}`,
		`policy：代码修改前必须先完成访谈式澄清、事实契约、PLAN 批准文件、写入边界和验证策略。`,
		"blockers：",
		blockers.length > 0 ? blockers.map((item) => `- ${item}`).join("\n") : "- 无。",
		"structuredNextAction：",
		formatNextAction(frame.nextAction),
		"nextAction：",
		canCode ? "- 按 PLAN.md 批准文件执行，并记录 evidence。" : `- ${frame.nextAction.instruction}`,
	].join("\n");
}