/*
 * 文件定位：Agent 运行态实现层 / 自修复面。
 * 核心目的：承载 fault Classifier 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 runtimeFaultClassifierDescriptor = {
    surface: "runtime.selfRepair",
    capability: "faultClassifier",
    purpose: "classify runtime fault envelopes and report repairability without executing repair actions",
    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.faultClassifier.rejected"],
    };
}
function categoryFromSignal(signal) {
    const kind = signal.kind?.trim().toLowerCase() ?? "";
    const source = signal.source?.trim().toLowerCase() ?? "";
    if (signal.contractRejected || kind.includes("contract") || source.includes("contract")) {
        return "contract";
    }
    if (signal.governanceRejected || kind.includes("governance") || source.includes("governance")) {
        return "governance";
    }
    if (signal.runtimeReady === false || kind.includes("ready") || kind.includes("state")) {
        return "runtime-state";
    }
    if (signal.moduleMounted === false || kind.includes("module")) {
        return "module-attachment";
    }
    if (signal.providerAdapter !== undefined || kind.includes("provider") || kind.includes("adapter")) {
        return "provider-adapter";
    }
    if (signal.executionPhase !== undefined || kind.includes("execution") || kind.includes("invoke")) {
        return "execution";
    }
    return "unknown";
}
function severityFromSignal(signal, category) {
    if (signal.severity !== undefined) {
        return signal.severity;
    }
    if (signal.externalSideEffect === true || category === "contract" || category === "governance") {
        return "critical";
    }
    if (signal.runtimeReady === false || signal.moduleMounted === false) {
        return "degraded";
    }
    return signal.retryable === false ? "degraded" : "recoverable";
}
function repairabilityFromSignal(signal, category, severity) {
    if (signal.externalSideEffect === true || severity === "critical") {
        return "requires-escalation";
    }
    if (category === "contract" || category === "governance") {
        return "requires-approval";
    }
    if (category === "unknown" || signal.retryable === false) {
        return "not-repairable";
    }
    return "auto-repairable";
}
function recommendedNextStep(repairability) {
    if (repairability === "auto-repairable") {
        return "build-plan";
    }
    if (repairability === "requires-approval") {
        return "request-approval";
    }
    if (repairability === "requires-escalation") {
        return "escalate";
    }
    return "observe-only";
}
export function classifyRuntimeFault(request) {
    if (request === undefined || !hasText(request.runtimeId)) {
        return failure("MISSING_RUNTIME_ID", "fault classification requires a runtimeId", "input");
    }
    if (request.signal === undefined) {
        return failure("MISSING_FAULT_SIGNAL", "fault classification requires a runtime fault signal", "input");
    }
    if (!hasText(request.signal.kind)) {
        return failure("MISSING_FAULT_KIND", "fault classification requires the signal to declare a fault kind", "input");
    }
    if (request.runtimeReady === false) {
        return failure("RUNTIME_NOT_READY", "fault classification can only run through a ready runtime host", "runtime-state");
    }
    if (request.contract?.accepted === false) {
        return failure("CONTRACT_REJECTED", request.contract.reason ?? "fault classification was rejected by contract surface", "contract");
    }
    if (request.governance?.accepted === false) {
        return failure("GOVERNANCE_REJECTED", request.governance.reason ?? "fault classification was rejected by governance", "governance");
    }
    const kind = request.signal.kind.trim();
    const allowedFaultKinds = cleanList(request.allowedFaultKinds);
    if (allowedFaultKinds.length > 0 && !allowedFaultKinds.includes(kind)) {
        return failure("FAULT_SCOPE_DENIED", `fault kind ${kind} is outside self-repair scope`, "scope");
    }
    const runtimeId = request.runtimeId.trim();
    const category = categoryFromSignal(request.signal);
    const severity = severityFromSignal(request.signal, category);
    const repairability = repairabilityFromSignal(request.signal, category, severity);
    const faultId = request.signal.faultId?.trim() || `${runtimeId}:fault:${kind}`;
    return {
        ok: true,
        classification: {
            runtimeId,
            faultId,
            kind,
            category,
            severity,
            repairability,
            recoverable: repairability === "auto-repairable" || repairability === "requires-approval",
            reason: request.signal.message?.trim() || `${kind} classified as ${category}`,
            source: request.signal.source?.trim() || "runtime.selfRepair",
            observedAt: request.observedAt?.trim() || "dry-run",
            evidenceTags: cleanList(request.signal.tags),
            recommendedNextStep: recommendedNextStep(repairability),
            contractChecked: true,
            governanceChecked: true,
            unsafeSideEffects: false,
        },
        events: [`runtime.selfRepair.faultClassifier.${repairability}`],
    };
}
