//! 模拟适配器实现
//!
//! 由于底层模块的API尚未完全实现，这里提供模拟实现
//! 后续可以逐步替换为真实的底层API调用

use crate::error::{OnboardingError, Result};
use crate::types::*;
use chrono::Utc;
use rust_decimal::Decimal;
use std::str::FromStr;
use tracing::{info, warn};

/// 模拟AI合规审批
pub async fn mock_compliance_verify(submission: &AssetSubmission) -> Result<ComplianceResult> {
    info!("【模拟】AI合规审批: {}", submission.asset_name);
    
    // 模拟审批延迟
    tokio::time::sleep(tokio::time::Duration::from_millis(500)).await;
    
    // 简单的合规检查
    let passed = !submission.asset_name.is_empty() 
        && !submission.jurisdiction.is_empty()
        && submission.initial_valuation_usd > 0.0;
    
    let score = if passed { 85 } else { 45 };
    
    Ok(ComplianceResult {
        passed,
        score,
        zk_proof: format!("0x{}", "a".repeat(96)),
        report: format!("模拟合规报告: 资产{}通过{}层验证", submission.asset_name, if passed { 7 } else { 3 }),
        timestamp: Utc::now(),
    })
}

/// 模拟AI估值
pub async fn mock_valuation_appraise(submission: &AssetSubmission) -> Result<ValuationResult> {
    info!("【模拟】AI估值: {}", submission.asset_name);
    
    tokio::time::sleep(tokio::time::Duration::from_millis(500)).await;
    
    // 简单估值：USD * 1.2 转换为XTZH
    let valuation_xtzh = Decimal::from_f64_retain(submission.initial_valuation_usd * 1.2)
        .ok_or_else(|| OnboardingError::ValuationError("无效的估值".to_string()))?;
    
    Ok(ValuationResult {
        valuation_xtzh,
        confidence: 0.85,
        model_results: vec![
            "ChatGPT: 85%".to_string(),
            "DeepSeek: 87%".to_string(),
            "Doubao: 83%".to_string(),
        ],
        timestamp: Utc::now(),
    })
}

/// 模拟DNA生成
pub async fn mock_dna_generate(submission: &AssetSubmission) -> Result<DNAResult> {
    info!("【模拟】DNA生成: {}", submission.asset_name);
    
    tokio::time::sleep(tokio::time::Duration::from_millis(300)).await;
    
    // 生成模拟DNA哈希（48字节）
    use sha3::{Digest, Sha3_384};
    let mut hasher = Sha3_384::new();
    hasher.update(submission.asset_name.as_bytes());
    hasher.update(submission.asset_type.as_bytes());
    let dna_hash = format!("0x{}", hex::encode(hasher.finalize()));
    
    // 生成模拟GNACS编码
    let gnacs_code = format!("GNACS-{}-{}-{:08X}", 
        &submission.asset_type[..3.min(submission.asset_type.len())].to_uppercase(),
        &submission.jurisdiction[..2.min(submission.jurisdiction.len())].to_uppercase(),
        rand::random::<u32>()
    );
    
    Ok(DNAResult {
        dna_hash,
        gnacs_code,
        asset_instance_id: uuid::Uuid::new_v4().to_string(),
        timestamp: Utc::now(),
    })
}

/// 模拟托管对接
pub async fn mock_custody_arrange(submission: &AssetSubmission, dna_hash: &str) -> Result<CustodyResult> {
    info!("【模拟】托管对接: {}", submission.asset_name);
    
    tokio::time::sleep(tokio::time::Duration::from_millis(400)).await;
    
    let custodian = match submission.jurisdiction.as_str() {
        "US" => "Bank of New York Mellon",
        "EU" => "Euroclear Bank",
        "China" => "China Securities Depository",
        _ => "Global Custodian Inc",
    };
    
    use sha3::{Digest, Sha3_384};
    let mut hasher = Sha3_384::new();
    hasher.update(dna_hash.as_bytes());
    hasher.update(custodian.as_bytes());
    let certificate_hash = format!("0x{}", hex::encode(hasher.finalize()));
    
    Ok(CustodyResult {
        custodian: custodian.to_string(),
        custody_certificate: format!("CERT-{}", uuid::Uuid::new_v4()),
        certificate_hash,
        timestamp: Utc::now(),
    })
}

/// 模拟XTZH铸造
pub async fn mock_xtzh_mint(valuation: &ValuationResult, dna_hash: &str) -> Result<XTZHResult> {
    info!("【模拟】XTZH铸造: {} XTZH", valuation.valuation_xtzh);
    
    tokio::time::sleep(tokio::time::Duration::from_millis(600)).await;
    
    // 生成模拟交易哈希
    use sha3::{Digest, Sha3_256};
    let mut hasher = Sha3_256::new();
    hasher.update(dna_hash.as_bytes());
    hasher.update(valuation.valuation_xtzh.to_string().as_bytes());
    let mint_tx_hash = format!("0x{}", hex::encode(hasher.finalize()));
    
    // 生成模拟XTZH地址（32字节）
    let xtzh_address = format!("0x{}", "b".repeat(64));
    
    Ok(XTZHResult {
        xtzh_amount: valuation.valuation_xtzh,
        xtzh_address,
        mint_tx_hash,
        timestamp: Utc::now(),
    })
}

/// 模拟代币发行
pub async fn mock_token_issue(submission: &AssetSubmission, xtzh_amount: Decimal) -> Result<TokenResult> {
    info!("【模拟】代币发行: {}", submission.asset_name);
    
    tokio::time::sleep(tokio::time::Duration::from_millis(500)).await;
    
    // 生成代币符号
    let token_symbol = format!("{}RWA", 
        submission.asset_name
            .chars()
            .filter(|c| c.is_alphabetic())
            .take(3)
            .collect::<String>()
            .to_uppercase()
    );
    
    // 生成模拟合约地址（32字节）
    let token_address = format!("0x{}", "c".repeat(64));
    
    // 生成模拟交易哈希
    use sha3::{Digest, Sha3_256};
    let mut hasher = Sha3_256::new();
    hasher.update(token_symbol.as_bytes());
    let deploy_tx_hash = format!("0x{}", hex::encode(hasher.finalize()));
    
    Ok(TokenResult {
        token_symbol,
        token_address,
        total_supply: xtzh_amount,
        deploy_tx_hash,
        timestamp: Utc::now(),
    })
}

/// 模拟区块链集成
pub async fn mock_blockchain_submit(dna_hash: &str, token_address: &str) -> Result<BlockchainResult> {
    info!("【模拟】区块链集成");
    
    tokio::time::sleep(tokio::time::Duration::from_millis(700)).await;
    
    // 生成模拟区块哈希（48字节）
    use sha3::{Digest, Sha3_384};
    let mut hasher = Sha3_384::new();
    hasher.update(dna_hash.as_bytes());
    hasher.update(token_address.as_bytes());
    let block_hash = format!("0x{}", hex::encode(hasher.finalize()));
    
    // 生成模拟交易哈希
    let mut tx_hasher = Sha3_384::new();
    tx_hasher.update(block_hash.as_bytes());
    let transaction_hash = format!("0x{}", hex::encode(tx_hasher.finalize()));
    
    Ok(BlockchainResult {
        block_number: rand::random::<u32>() as u64 + 1000000,
        block_hash,
        transaction_hash,
        timestamp: Utc::now(),
    })
}