/*
 * 文件定位：Agent 运行态实现层 / 自修复面。
 * 核心目的：承载 repair Rollback Guard 这一能力位点。
 * 能力要求1：需要把文件名表达的能力落实成清晰的类型、输入输出和最小行为。
 * 能力要求2：如果后续发现语义不足，应优先补接口契约，而不是把逻辑散落到相邻文件。
 * 边界：承托和治理运行态，不吞并执行引擎、模型适配器或官方模块内部实现。
 * 对接：需要服务 applicationSurface、officialModuleSurface、governancePlane、invocationMethod 和 inspection/debug 等运行面。
 * 实现提示：先补稳定类型契约、最小可测行为和清晰错误边界，再接入真实执行逻辑。
 */
export const runtimeRepairRollbackGuardDescriptor = {
    surface: "runtime.selfRepair",
    capability: "repairRollbackGuard",
    purpose: "guard rollback points and conditions without executing rollback operations",
    unsafeSideEffects: false,
};
function hasText(value) {
    return typeof value === "string" && value.trim().length > 0;
}
function cleanList(values) {
    return [...new Set((values ?? []).map((value) => value.trim()).filter(Boolean))];
}
function failure(code, message, boundary) {
    return {
        ok: false,
        error: {
            code,
            message,
            boundary,
            safeForRuntimeInspection: true,
            internalDetailExposed: false,
        },
        events: ["runtime.selfRepair.repairRollbackGuard.rejected"],
    };
}
export function guardRepairRollback(request) {
    if (request === undefined || !hasText(request.runtimeId)) {
        return failure("MISSING_RUNTIME_ID", "repair rollback guard requires a runtimeId", "input");
    }
    if (request.plan === undefined) {
        return failure("MISSING_REPAIR_PLAN", "repair rollback guard requires a repair plan", "input");
    }
    const rollbackPoint = request.rollbackPoint?.trim() || request.sandboxRun?.rollbackPoint;
    if (!hasText(rollbackPoint)) {
        return failure("MISSING_ROLLBACK_POINT", "repair rollback guard requires a rollback point", "input");
    }
    if (request.runtimeReady === false) {
        return failure("RUNTIME_NOT_READY", "repair rollback can only be guarded through a ready runtime host", "runtime-state");
    }
    if (request.contract?.accepted === false) {
        return failure("CONTRACT_REJECTED", request.contract.reason ?? "repair rollback guard was rejected by contract surface", "contract");
    }
    if (request.governance?.accepted === false) {
        return failure("GOVERNANCE_REJECTED", request.governance.reason ?? "repair rollback guard was rejected by governance", "governance");
    }
    const knownRollbackPoints = cleanList(request.plan.rollbackPoints);
    if (!knownRollbackPoints.includes(rollbackPoint)) {
        return failure("ROLLBACK_POINT_NOT_FOUND", `rollback point ${rollbackPoint} is not declared by the repair plan`, "rollback");
    }
    const allowedRollbackPoints = cleanList(request.allowedRollbackPoints);
    if (allowedRollbackPoints.length > 0 && !allowedRollbackPoints.includes(rollbackPoint)) {
        return failure("ROLLBACK_SCOPE_DENIED", `rollback point ${rollbackPoint} is outside the allowed rollback scope`, "scope");
    }
    const step = request.plan.steps.find((candidate) => candidate.rollbackPoint === rollbackPoint);
    const approvedRollbackPoints = cleanList(request.approvedRollbackPoints);
    const requiresApproval = request.plan.risk === "high" || request.plan.approvalRequired;
    const status = requiresApproval && !approvedRollbackPoints.includes(rollbackPoint) ? "requires-approval" : "allow";
    const trigger = request.trigger ?? (request.sandboxRun === undefined ? "operator-request" : "sandbox-failed");
    return {
        ok: true,
        decision: {
            status,
            runtimeId: request.runtimeId.trim(),
            planId: request.plan.planId,
            rollbackPoint,
            stepId: step?.stepId,
            stepKind: step?.kind,
            risk: request.plan.risk,
            trigger,
            reason: status === "requires-approval"
                ? "rollback point is valid but requires explicit approval"
                : "rollback point passed dry-run guard checks",
            rollbackPrepared: true,
            rollbackExecuted: false,
            audit: {
                dryRun: true,
                unsafeSideEffects: false,
                guard: "runtime.selfRepair.repairRollbackGuard",
                contractChecked: true,
                governanceChecked: true,
            },
        },
        events: [`runtime.selfRepair.repairRollbackGuard.${status}`],
    };
}
