// 区块链网络抽象接口统一实现
package blockchain

import (
	"fmt"
	"log"
	"sync"
)

type IChainServer interface {
	Listen() error
	ListenMsg()
	Transfer(from, to, symbol string, amount, fee float64) error
	Stop()
}

type BlockChainServer struct {
	mu     sync.Mutex
	chains map[string]IChainServer
}

func NewBlockChainServer() *BlockChainServer {
	return &BlockChainServer{
		chains: make(map[string]IChainServer),
	}
}

func (b *BlockChainServer) RegisterChain(name string, chain IChainServer) {
	b.mu.Lock()
	defer b.mu.Unlock()
	b.chains[name] = chain
}

func (b *BlockChainServer) Listen(chain string, ch chan any) error {
	if srv, ok := b.chains[chain]; ok {
		go func() {
			err := srv.Listen()
			if err != nil {
				log.Printf("Start Listen error: %v", err)
				return
			}
		}()
		return nil
	}
	return fmt.Errorf("链未注册: %s", chain)
}

func (b *BlockChainServer) ListenMsg(chain string) error {
	if srv, ok := b.chains[chain]; ok {
		go func() {
			srv.ListenMsg()
		}()
		return nil
	}
	return fmt.Errorf("链未注册: %s", chain)
}

func (b *BlockChainServer) Transfer(chain, from, to, symbol string, amount, fee float64) error {
	if srv, ok := b.chains[chain]; ok {
		fmt.Printf("💸 发起转账: Chain(%s)-Symbol(%s), From(%s), To(%s), Amount(%f)\n", chain, symbol, from, to, amount)
		go func() {
			err := srv.Transfer(from, to, symbol, amount, fee)
			if err != nil {
				log.Printf("Transfer Error: %v\n Transfer has Exited", err)
				return
			}
		}()
		return nil
	}
	return fmt.Errorf("链未注册: %s", chain)
}

func (b *BlockChainServer) Stop(chain string) {
	if srv, ok := b.chains[chain]; ok {
		fmt.Printf("💸 关闭服务: %+v\n", chain)
		srv.Stop()
		return
	}
	fmt.Printf("链未注册: %s", chain)
}