package com.ruoyi.blockchain.controller;

import java.util.Map;

import org.springframework.security.access.prepost.PreAuthorize;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

import com.ruoyi.common.annotation.Log;
import com.ruoyi.common.core.controller.BaseController;
import com.ruoyi.common.core.domain.AjaxResult;
import com.ruoyi.common.enums.BusinessType;

/**
 * 区块链集成API控制器
 * 
 * 提供数据上链存储、验证、智能合约执行等RESTful API接口
 * 
 * @author ruoyi
 * @date 2025-12-19
 */
@RestController
@RequestMapping("/api/blockchain")
public class BlockchainController extends BaseController
{
    // 注意：这里需要注入实际的区块链服务，暂时用注释表示
    // @Autowired
    // private IBlockchainService blockchainService;

    /**
     * 数据上链存储
     * 
     * @param data 要存储的数据
     * @return 存储结果
     */
    @PreAuthorize("@ss.hasPermi('blockchain:data:store')")
    @Log(title = "区块链数据", businessType = BusinessType.INSERT)
    @PostMapping("/store")
    public AjaxResult storeOnChain(@RequestBody Map<String, Object> data)
    {
        try {
            // 这里需要实现实际的区块链存储逻辑
            // String txHash = blockchainService.storeOnChain(data);
            String txHash = "0x" + System.currentTimeMillis(); // 临时模拟
            return AjaxResult.success("数据上链成功", txHash);
        } catch (Exception e) {
            logger.error("数据上链失败", e);
            return error("数据上链失败: " + e.getMessage());
        }
    }

    /**
     * 验证链上数据
     * 
     * @param hash 数据哈希
     * @return 验证结果
     */
    @PreAuthorize("@ss.hasPermi('blockchain:data:verify')")
    @GetMapping("/verify/{hash}")
    public AjaxResult verifyOnChain(@PathVariable("hash") String hash)
    {
        try {
            // 这里需要实现实际的链上数据验证逻辑
            // boolean isValid = blockchainService.verifyOnChain(hash);
            boolean isValid = true; // 临时模拟
            return AjaxResult.success("数据验证完成", isValid);
        } catch (Exception e) {
            logger.error("验证链上数据失败", e);
            return error("验证链上数据失败: " + e.getMessage());
        }
    }

    /**
     * 执行智能合约
     * 
     * @param contractAddress 合约地址
     * @param methodName 方法名
     * @param parameters 参数
     * @return 执行结果
     */
    @PreAuthorize("@ss.hasPermi('blockchain:contract:execute')")
    @Log(title = "智能合约", businessType = BusinessType.OTHER)
    @PostMapping("/contract/execute")
    public AjaxResult executeSmartContract(
            @RequestParam("contractAddress") String contractAddress,
            @RequestParam("methodName") String methodName,
            @RequestBody Map<String, Object> parameters)
    {
        try {
            // 这里需要实现实际的智能合约执行逻辑
            // String result = blockchainService.executeSmartContract(contractAddress, methodName, parameters);
            String result = "执行成功"; // 临时模拟
            return AjaxResult.success("智能合约执行成功", result);
        } catch (Exception e) {
            logger.error("执行智能合约失败", e);
            return error("执行智能合约失败: " + e.getMessage());
        }
    }

    /**
     * 部署智能合约
     * 
     * @param contractCode 合约代码
     * @param constructorParams 构造函数参数
     * @return 部署结果
     */
    @PreAuthorize("@ss.hasPermi('blockchain:contract:deploy')")
    @Log(title = "智能合约", businessType = BusinessType.INSERT)
    @PostMapping("/contract/deploy")
    public AjaxResult deploySmartContract(
            @RequestParam("contractCode") String contractCode,
            @RequestBody Map<String, Object> constructorParams)
    {
        try {
            // 这里需要实现实际的智能合约部署逻辑
            // String contractAddress = blockchainService.deploySmartContract(contractCode, constructorParams);
            String contractAddress = "0x" + System.currentTimeMillis(); // 临时模拟
            return AjaxResult.success("智能合约部署成功", contractAddress);
        } catch (Exception e) {
            logger.error("部署智能合约失败", e);
            return error("部署智能合约失败: " + e.getMessage());
        }
    }

    /**
     * 查询链上事件
     * 
     * @param contractAddress 合约地址
     * @param eventName 事件名称
     * @param fromBlock 起始区块
     * @param toBlock 结束区块
     * @return 事件列表
     */
    @PreAuthorize("@ss.hasPermi('blockchain:event:query')")
    @GetMapping("/events")
    public AjaxResult queryChainEvents(
            @RequestParam(value = "contractAddress", required = false) String contractAddress,
            @RequestParam(value = "eventName", required = false) String eventName,
            @RequestParam(value = "fromBlock", required = false) Long fromBlock,
            @RequestParam(value = "toBlock", required = false) Long toBlock)
    {
        try {
            // 这里需要实现实际的链上事件查询逻辑
            // List<Map<String, Object>> events = blockchainService.queryChainEvents(contractAddress, eventName, fromBlock, toBlock);
            return AjaxResult.success("查询链上事件成功", null); // 临时模拟
        } catch (Exception e) {
            logger.error("查询链上事件失败", e);
            return error("查询链上事件失败: " + e.getMessage());
        }
    }

    /**
     * 查询交易详情
     * 
     * @param txHash 交易哈希
     * @return 交易详情
     */
    @PreAuthorize("@ss.hasPermi('blockchain:transaction:query')")
    @GetMapping("/transaction/{txHash}")
    public AjaxResult getTransactionDetails(@PathVariable("txHash") String txHash)
    {
        try {
            // 这里需要实现实际的交易查询逻辑
            // Map<String, Object> transaction = blockchainService.getTransactionDetails(txHash);
            return AjaxResult.success("查询交易详情成功", null); // 临时模拟
        } catch (Exception e) {
            logger.error("查询交易详情失败", e);
            return error("查询交易详情失败: " + e.getMessage());
        }
    }

    /**
     * 获取区块链网络状态
     * 
     * @return 网络状态
     */
    @PreAuthorize("@ss.hasPermi('blockchain:network:query')")
    @GetMapping("/network/status")
    public AjaxResult getNetworkStatus()
    {
        try {
            // 这里需要实现实际的网络状态查询逻辑
            // Map<String, Object> status = blockchainService.getNetworkStatus();
            Map<String, Object> status = new java.util.HashMap<>();
            status.put("connected", true);
            status.put("blockHeight", 12345L);
            status.put("networkId", "mainnet"); // 临时模拟
            return AjaxResult.success("网络状态", status);
        } catch (Exception e) {
            logger.error("获取区块链网络状态失败", e);
            return error("获取网络状态失败: " + e.getMessage());
        }
    }

    /**
     * 获取账户余额
     * 
     * @param address 账户地址
     * @return 账户余额
     */
    @PreAuthorize("@ss.hasPermi('blockchain:account:query')")
    @GetMapping("/account/{address}/balance")
    public AjaxResult getAccountBalance(@PathVariable("address") String address)
    {
        try {
            // 这里需要实现实际的账户余额查询逻辑
            // BigDecimal balance = blockchainService.getAccountBalance(address);
            return AjaxResult.success("账户余额", "0"); // 临时模拟
        } catch (Exception e) {
            logger.error("获取账户余额失败", e);
            return error("获取账户余额失败: " + e.getMessage());
        }
    }
}