// charter-std/src/constitution_interface.charter
// NAC公链 Charter 智能合约宪法接口
// Issue #70 | 版本: 1.0 | 2026-03-07
// 
// 本文件定义 Charter 合约访问宪法层的标准接口：
// - 宪法条款查询接口（A44-A52）
// - 节点共享合规验证绑定
// - 跨辖区资源分配查询
// - 辖区身份验证接口

// ============================================================
// 标准库导入（Charter 原生）
// ============================================================

import std::types::{ Address, Hash, Bytes48, Uint16, Uint64, Bool, String }
import std::acc20::{ AssetId, AssetRecord }
import std::cr::{ ConstitutionalReceipt, DualConstitutionalReceipt }
import std::jurisdiction::{ JurisdictionId, JurisdictionProof }

// ============================================================
// 宪法条款查询接口
// ============================================================

/// 宪法条款层级
enum ClauseTier {
    Eternal,      // 永恒级（索引1-100）
    Strategic,    // 战略级（索引101-1000）
    Tactical,     // 战术级（索引1001+）
}

/// 宪法条款记录
struct ConstitutionalClause {
    clause_index: Uint64,
    title: String,
    tier: ClauseTier,
    is_active: Bool,
    effective_from: Uint64,
    clause_hash: Bytes48,
}

/// 节点共享宪法条款（A44-A52）
struct NodeSharingClause {
    clause_index: Uint64,
    name: String,
    tier: ClauseTier,
    // 条款核心谓词（CNNL形式化表达）
    predicate_hash: Bytes48,
    // 违规处理动作
    violation_action: String,
    is_active: Bool,
}

// ============================================================
// 宪法接口（内置合约，地址 0x0000...CONST）
// ============================================================

/// NAC宪法内置合约接口
/// 合约地址：0x0000000000000000000000000000000000000001
interface IConstitution {
    
    // --- 条款查询 ---
    
    /// 查询宪法条款是否激活
    /// @param clause_index 条款索引（如 A44 = 44）
    /// @returns 条款是否处于激活状态
    fn is_clause_active(clause_index: Uint64) -> Bool
    
    /// 获取条款详情
    /// @param clause_index 条款索引
    /// @returns 条款记录（不存在时 panic）
    fn get_clause(clause_index: Uint64) -> ConstitutionalClause
    
    /// 获取节点共享条款（A44-A52）
    /// @param clause_index 条款索引（44-52）
    /// @returns 节点共享条款记录
    fn get_node_sharing_clause(clause_index: Uint64) -> NodeSharingClause
    
    // --- 节点共享合规验证（A44）---
    
    /// 验证节点是否满足物理共享逻辑隔离要求（A44）
    /// @param node_did 节点DID
    /// @param container_id 容器实例ID（不能为空）
    /// @param network_namespace 网络命名空间（不能为空）
    /// @returns 是否合规
    fn verify_node_sharing_isolation(
        node_did: String,
        container_id: String,
        network_namespace: String,
    ) -> Bool
    
    // --- 跨辖区双CR验证（A45）---
    
    /// 验证跨辖区交易的双CR（A45）
    /// @param source_cr 源辖区宪法收据
    /// @param target_cr 目标辖区宪法收据
    /// @returns 双CR是否有效
    fn verify_dual_cr(
        source_cr: ConstitutionalReceipt,
        target_cr: ConstitutionalReceipt,
    ) -> Bool
    
    /// 获取当前区块的 jurisdiction_merkle_root（A45）
    /// @returns 当前区块的辖区默克尔树根（无跨辖区交易时返回零哈希）
    fn get_jurisdiction_merkle_root() -> Bytes48
    
    // --- 资源配额查询（A46）---
    
    /// 查询辖区当前资源配额（A46）
    /// @param jurisdiction 辖区ID
    /// @returns (cpu_share, memory_share, bandwidth_share, storage_share) 定点数1e4
    fn get_jurisdiction_quota(jurisdiction: JurisdictionId) -> (Uint64, Uint64, Uint64, Uint64)
    
    /// 检查辖区是否超出资源配额（A46）
    /// @param jurisdiction 辖区ID
    /// @returns 是否超出配额
    fn is_quota_exceeded(jurisdiction: JurisdictionId) -> Bool
    
    // --- 节点身份辖区绑定（A47）---
    
    /// 验证节点DID的辖区绑定（A47）
    /// @param node_did 节点DID
    /// @param jurisdiction 声明的辖区ID
    /// @returns 绑定是否有效
    fn verify_node_jurisdiction_binding(
        node_did: String,
        jurisdiction: JurisdictionId,
    ) -> Bool
    
    /// 验证节点加载的插件哈希是否已授权（A47）
    /// @param node_did 节点DID
    /// @param plugin_hash 插件哈希（SHA3-384）
    /// @returns 插件是否已授权
    fn verify_plugin_hash_authorized(
        node_did: String,
        plugin_hash: Bytes48,
    ) -> Bool
    
    // --- WASM沙箱验证（A48）---
    
    /// 验证插件是否在WASM沙箱中执行（A48）
    /// @param plugin_hash 插件哈希
    /// @returns 是否在WASM沙箱中执行
    fn verify_wasm_sandbox_execution(plugin_hash: Bytes48) -> Bool
    
    /// 检查插件哈希是否已上链（A48）
    /// @param plugin_hash 插件哈希
    /// @returns 是否已上链
    fn is_plugin_hash_on_chain(plugin_hash: Bytes48) -> Bool
    
    // --- CEE集群查询（A49）---
    
    /// 获取支持指定辖区的CEE节点列表（A49）
    /// @param jurisdiction 辖区ID
    /// @returns CEE节点DID列表
    fn get_cee_nodes_for_jurisdiction(jurisdiction: JurisdictionId) -> Array<String>
    
    /// 获取负载最低的CEE节点（A49，用于跨辖区交易路由）
    /// @param source_jurisdiction 源辖区
    /// @param target_jurisdiction 目标辖区
    /// @returns 最优CEE节点DID（无可用节点时返回空字符串）
    fn get_optimal_cee_node(
        source_jurisdiction: JurisdictionId,
        target_jurisdiction: JurisdictionId,
    ) -> String
    
    // --- 争议状态查询（A50）---
    
    /// 查询辖区间是否存在未解决争议（A50）
    /// @param jurisdiction_a 辖区A
    /// @param jurisdiction_b 辖区B
    /// @returns 是否存在未解决争议
    fn has_pending_dispute(
        jurisdiction_a: JurisdictionId,
        jurisdiction_b: JurisdictionId,
    ) -> Bool
    
    // --- CSNP路由验证（A51）---
    
    /// 验证CSNP辖区感知路由是否启用（A51）
    /// @returns 是否启用
    fn is_csnp_jurisdiction_routing_enabled() -> Bool
    
    // --- 存储加密验证（A52）---
    
    /// 验证存储节点是否满足加密要求（A52）
    /// @param storage_node_did 存储节点DID
    /// @returns 是否满足A52要求
    fn verify_storage_encryption_compliance(storage_node_did: String) -> Bool
}

// ============================================================
// 示例合约：使用宪法接口的 RWA 资产跨辖区转移合约
// ============================================================

/// RWA资产跨辖区转移合约（集成A44-A52宪法条款）
contract RwaAssetCrossJurisdictionTransfer {
    
    // 宪法内置合约地址
    const CONSTITUTION_ADDRESS: Address = 0x0000000000000000000000000000000000000001
    
    // 状态变量
    state {
        owner: Address,
        asset_id: AssetId,
        source_jurisdiction: JurisdictionId,
        target_jurisdiction: JurisdictionId,
        transfer_status: TransferStatus,
        source_cr: ConstitutionalReceipt,
        target_cr: ConstitutionalReceipt,
        initiated_at: Uint64,
    }
    
    enum TransferStatus {
        Pending,
        CrVerified,
        Completed,
        Failed,
    }
    
    // 构造函数
    constructor(
        asset_id: AssetId,
        source_jurisdiction: JurisdictionId,
        target_jurisdiction: JurisdictionId,
    ) {
        self.owner = msg.sender
        self.asset_id = asset_id
        self.source_jurisdiction = source_jurisdiction
        self.target_jurisdiction = target_jurisdiction
        self.transfer_status = TransferStatus::Pending
        self.initiated_at = block.timestamp
    }
    
    /// 提交双CR并验证（A45）
    /// 调用者必须提供源辖区和目标辖区的宪法收据
    fn submit_dual_cr(
        source_cr: ConstitutionalReceipt,
        target_cr: ConstitutionalReceipt,
    ) -> Bool {
        // 仅资产所有者可提交
        require(msg.sender == self.owner, "仅资产所有者可提交双CR")
        require(self.transfer_status == TransferStatus::Pending, "转移状态不正确")
        
        // 调用宪法内置合约验证双CR（A45）
        let constitution = IConstitution(CONSTITUTION_ADDRESS)
        let is_valid = constitution.verify_dual_cr(source_cr, target_cr)
        
        if !is_valid {
            self.transfer_status = TransferStatus::Failed
            emit DualCrVerificationFailed(self.asset_id, block.timestamp)
            return false
        }
        
        // 检查辖区间是否有未解决争议（A50）
        let has_dispute = constitution.has_pending_dispute(
            self.source_jurisdiction,
            self.target_jurisdiction,
        )
        require(!has_dispute, "A50: 辖区间存在未解决争议，转移被暂停")
        
        // 检查目标辖区资源配额（A46）
        let quota_exceeded = constitution.is_quota_exceeded(self.target_jurisdiction)
        require(!quota_exceeded, "A46: 目标辖区资源配额已超出，请稍后重试")
        
        self.source_cr = source_cr
        self.target_cr = target_cr
        self.transfer_status = TransferStatus::CrVerified
        
        emit DualCrVerified(self.asset_id, self.source_jurisdiction, self.target_jurisdiction)
        return true
    }
    
    /// 执行跨辖区转移（A45验证通过后）
    fn execute_transfer(recipient: Address) -> Bool {
        require(msg.sender == self.owner, "仅资产所有者可执行转移")
        require(self.transfer_status == TransferStatus::CrVerified, "双CR未验证")
        
        let constitution = IConstitution(CONSTITUTION_ADDRESS)
        
        // 验证接收方节点的辖区绑定（A47）
        // 注：实际实现中需要通过 NRPC4.0 查询接收方节点DID
        
        // 验证CSNP路由是否启用（A51）
        let routing_enabled = constitution.is_csnp_jurisdiction_routing_enabled()
        require(routing_enabled, "A51: CSNP辖区感知路由未启用，无法执行跨辖区转移")
        
        // 执行ACC-20资产转移（NAC原生标准）
        // 注：使用 std::acc20 而非 ERC-20
        let transfer_result = acc20::transfer_cross_jurisdiction(
            self.asset_id,
            self.owner,
            recipient,
            self.source_cr,
            self.target_cr,
        )
        
        if transfer_result {
            self.transfer_status = TransferStatus::Completed
            emit TransferCompleted(
                self.asset_id,
                self.owner,
                recipient,
                self.source_jurisdiction,
                self.target_jurisdiction,
                block.timestamp,
            )
        } else {
            self.transfer_status = TransferStatus::Failed
            emit TransferFailed(self.asset_id, block.timestamp)
        }
        
        return transfer_result
    }
    
    // 事件定义
    event DualCrVerificationFailed(asset_id: AssetId, timestamp: Uint64)
    event DualCrVerified(
        asset_id: AssetId,
        source_jurisdiction: JurisdictionId,
        target_jurisdiction: JurisdictionId,
    )
    event TransferCompleted(
        asset_id: AssetId,
        from: Address,
        to: Address,
        source_jurisdiction: JurisdictionId,
        target_jurisdiction: JurisdictionId,
        timestamp: Uint64,
    )
    event TransferFailed(asset_id: AssetId, timestamp: Uint64)
}

// ============================================================
// 示例合约：节点共享注册合约（A44/A47）
// ============================================================

/// 节点共享注册合约
/// 用于在链上记录节点的物理共享状态和辖区绑定
contract NodeSharingRegistry {
    
    const CONSTITUTION_ADDRESS: Address = 0x0000000000000000000000000000000000000001
    
    state {
        admin: Address,
        // 节点DID → 共享节点记录
        nodes: Map<String, SharedNodeOnChain>,
        // 辖区 → 节点DID列表
        jurisdiction_nodes: Map<JurisdictionId, Array<String>>,
        total_nodes: Uint64,
    }
    
    struct SharedNodeOnChain {
        node_did: String,
        jurisdiction: JurisdictionId,
        physical_host_id: String,
        container_id: String,
        network_namespace: String,
        plugin_hashes: Array<Bytes48>,
        is_active: Bool,
        registered_at: Uint64,
        jurisdiction_proof_hash: Bytes48,
    }
    
    constructor() {
        self.admin = msg.sender
        self.total_nodes = 0
    }
    
    /// 注册共享节点（A44 + A47 双重验证）
    fn register_shared_node(
        node_did: String,
        jurisdiction: JurisdictionId,
        physical_host_id: String,
        container_id: String,
        network_namespace: String,
        plugin_hashes: Array<Bytes48>,
        jurisdiction_proof_hash: Bytes48,
    ) -> Bool {
        let constitution = IConstitution(CONSTITUTION_ADDRESS)
        
        // A44: 验证节点逻辑隔离
        let isolation_ok = constitution.verify_node_sharing_isolation(
            node_did,
            container_id,
            network_namespace,
        )
        require(isolation_ok, "A44: 节点未满足逻辑隔离要求")
        
        // A47: 验证节点辖区绑定
        let binding_ok = constitution.verify_node_jurisdiction_binding(node_did, jurisdiction)
        require(binding_ok, "A47: 节点辖区绑定验证失败")
        
        // A47: 验证所有插件哈希已授权
        for hash in plugin_hashes {
            let authorized = constitution.verify_plugin_hash_authorized(node_did, hash)
            require(authorized, "A47: 存在未授权的辖区规则插件")
        }
        
        // A48: 验证插件在WASM沙箱中执行
        for hash in plugin_hashes {
            let wasm_ok = constitution.verify_wasm_sandbox_execution(hash)
            require(wasm_ok, "A48: 插件必须在WASM沙箱中执行")
            
            let on_chain = constitution.is_plugin_hash_on_chain(hash)
            require(on_chain, "A48: 插件哈希必须已上链验证")
        }
        
        // 记录节点信息
        let record = SharedNodeOnChain {
            node_did: node_did,
            jurisdiction: jurisdiction,
            physical_host_id: physical_host_id,
            container_id: container_id,
            network_namespace: network_namespace,
            plugin_hashes: plugin_hashes,
            is_active: true,
            registered_at: block.timestamp,
            jurisdiction_proof_hash: jurisdiction_proof_hash,
        }
        
        self.nodes[node_did] = record
        self.jurisdiction_nodes[jurisdiction].push(node_did)
        self.total_nodes += 1
        
        emit NodeRegistered(node_did, jurisdiction, block.timestamp)
        return true
    }
    
    /// 查询辖区节点数量
    fn get_jurisdiction_node_count(jurisdiction: JurisdictionId) -> Uint64 {
        return self.jurisdiction_nodes[jurisdiction].length() as Uint64
    }
    
    event NodeRegistered(node_did: String, jurisdiction: JurisdictionId, timestamp: Uint64)
}