/*
 * 文件定位：Agent 运行态实现层 / 自适应运行面。
 * 核心目的：承载 adaptation Decision Surface 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 adaptationDecisionSurfaceDescriptor = {
    surface: "runtime.adaptiveRuntime",
    capability: "adaptationDecisionSurface",
    purpose: "choose a dry-run adaptation decision from registered policies and collected signals",
    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 normalizeCaller(caller) {
    const normalized = {
        kind: caller.kind,
        id: caller.id.trim(),
    };
    const moduleId = caller.moduleId?.trim();
    if (moduleId !== undefined && moduleId.length > 0) {
        normalized.moduleId = moduleId;
    }
    const sessionId = caller.sessionId?.trim();
    if (sessionId !== undefined && sessionId.length > 0) {
        normalized.sessionId = sessionId;
    }
    return normalized;
}
function failure(code, message, boundary) {
    return {
        ok: false,
        error: {
            code,
            message,
            boundary,
            safeForRuntimeInspection: true,
            internalDetailExposed: false,
        },
        events: ["runtime.adaptiveRuntime.decisionSurface.rejected"],
    };
}
function firstValidSignalId(signals) {
    const signalIds = cleanList(signals.map((signal) => signal.signalId ?? ""));
    if (signalIds.length === 0) {
        return failure("MISSING_SIGNAL_ID", "adaptation decision surface requires at least one signal id", "signal");
    }
    return signalIds;
}
function choosePolicy(policies) {
    for (const policy of policies) {
        if (!hasText(policy.policyId)) {
            return failure("MISSING_POLICY_ID", "adaptation decision surface requires every policy ref to include policyId", "policy");
        }
        if (!hasText(policy.action)) {
            return failure("MISSING_POLICY_ACTION", "adaptation decision surface requires every policy ref to include an action", "policy");
        }
    }
    const enabledPolicies = policies.filter((policy) => policy.enabled !== false);
    if (enabledPolicies.length === 0) {
        return failure("NO_ENABLED_POLICY", "adaptation decision surface needs at least one enabled policy", "policy");
    }
    return [...enabledPolicies].sort((left, right) => (right.priority ?? 0) - (left.priority ?? 0))[0];
}
export function decideAdaptationSurface(request) {
    if (request === undefined || !hasText(request.runtimeId)) {
        return failure("MISSING_RUNTIME_ID", "adaptation decision surface requires a runtimeId", "input");
    }
    if (request.caller === undefined || !hasText(request.caller.id)) {
        return failure("MISSING_CALLER", "adaptation decision surface requires an application, module, or runtime caller", "input");
    }
    if (!hasText(request.decisionId)) {
        return failure("MISSING_DECISION_ID", "adaptation decision surface requires a decisionId for auditability", "input");
    }
    if (request.runtimeReady === false) {
        return failure("RUNTIME_NOT_READY", "adaptation decisions can only be planned through a ready runtime host", "runtime-state");
    }
    if (request.contract?.accepted === false) {
        return failure("CONTRACT_REJECTED", request.contract.reason ?? "adaptation decision was rejected by contract surface", "contract");
    }
    if (request.governance?.accepted === false) {
        return failure("GOVERNANCE_REJECTED", request.governance.reason ?? "adaptation decision was rejected by governance", "governance");
    }
    if ((request.policies ?? []).length === 0) {
        return failure("MISSING_POLICIES", "adaptation decision surface requires registered policy refs", "policy");
    }
    if ((request.signals ?? []).length === 0) {
        return failure("MISSING_SIGNALS", "adaptation decision surface requires collected signal refs", "signal");
    }
    const selectedPolicy = choosePolicy(request.policies ?? []);
    if ("ok" in selectedPolicy) {
        return selectedPolicy;
    }
    const signalIds = firstValidSignalId(request.signals ?? []);
    if ("ok" in signalIds) {
        return signalIds;
    }
    const runtimeId = request.runtimeId.trim();
    const decisionId = request.decisionId.trim();
    const maxSignalWeight = Math.max(1, ...(request.signals ?? []).map((signal) => signal.weight ?? 1));
    const selectedPriority = selectedPolicy.priority ?? 0;
    const confidence = Math.min(1, Number(((selectedPriority + maxSignalWeight) / (selectedPriority + maxSignalWeight + 1)).toFixed(4)));
    return {
        ok: true,
        decision: {
            decisionId,
            runtimeId,
            caller: normalizeCaller(request.caller),
            route: "runtime.adaptiveRuntime.adaptationDecisionSurface",
            selectedPolicyId: selectedPolicy.policyId?.trim() ?? "",
            action: selectedPolicy.action?.trim() ?? "observe",
            consideredPolicyIds: cleanList((request.policies ?? []).map((policy) => policy.policyId ?? "")),
            signalIds,
            confidence,
            mode: "dry-run-decision",
            contractChecked: true,
            governanceChecked: true,
            unsafeSideEffects: false,
        },
        events: ["runtime.adaptiveRuntime.decisionSurface.decided"],
    };
}
