const ipfsClient = require('ipfs-http-client');
const ssbClient = require('ssb-client');
const FS = require('fs');
const Path = require('path');
const pull  = require('pull-stream');
const sbotOpts = {host:"oasis", port:8008};
const ipfsOpts = { host: 'ipfs', port: '5001', protocol: 'http' };
const homePath = "/root/.zen";
const ipfsWebUiHash = "bafybeidatpz2hli6fgu3zul5woi27ujesdf5o5a7bu622qj6ugharciwjq";

let clearSwarmPeers = async(ipfs) => {
    const peersInfo = await ipfs.swarm.addrs();
    peersInfo.forEach((peer) => {
        ipfs.swarm.disconnect(peer.addrs[0]).then(() => {
            console.log(`${peer.id} disconnected`)
        }).catch((err) => {
            console.log(`${peer.id} not disconnect : ${err.message}`)
        } )
    });

}

let clearBootstrapPeers = async(ipfs) => {
    const bootstraps = await ipfs.bootstrap.list()
    bootstraps.Peers.forEach((bootstrap) => {
        ipfs.bootstrap.rm(bootstrap)
            .then((done) => {console.log(`${bootstrap} disconnected`)})
            .catch((err) => {console.log(`${bootstrap} not diconnect : ${error.message}`)})
    });
}

let connectOnSwarm = async(ipfs, addr) => {
    ipfs.swarm.connect(addr)
    .then((done) => {console.log(`${addr} connected`)})
    .catch((err) => { console.log(`${addr} not connected error : ${err.message}`)})
}

let whoami = () => {
    return new Promise((resolve, reject) => {
        ssbClient(sbotOpts, (err, sbot) => {
            if(err) reject(err);
            sbot.whoami((err, id) => {
                if(err) reject(err);
                sbot.close();
                resolve(id);
            })
        });
    })
}

let ssbRequest = (query) => {
    return new Promise((resolve, reject) => {
        ssbClient(sbotOpts, (err, sbot) => {
            if(err) reject(err);
            pull(sbot.query.read(query), pull.collect((error, results) => {
                if(error) reject(error);
                sbot.close();
                resolve(results);
            }));
        });
    });
}

let ssbFriends = () => {
    return new Promise((resolve, reject) => {
        ssbClient(sbotOpts, (err, sbot) => {
            if(err) reject(err);
            pull(sbot.friends.createFriendStream(), pull.collect((err, friends) => {
                if(err) reject(err);
                sbot.close();
                resolve(friends);
            }));
        });
    });
};

let findRecent = (arr) => {
    let recent = arr[0];
    arr.forEach((a) => {
        if(a.timestamp > recent.timestamp) {
            recent = a;
        }
    });
    return recent;
}

excludeLan = (addrs) => {
    return addrs.filter((a) => !a.toString().match( /(127\.)|(10\.)|(172\.1[6-9]\.)|(172\.2[0-9]\.)|172\.3[0-1]\.|(192\.168\.)/gm))
}

let publish = (message) => {
    return new Promise((resolve, reject) => {
        ssbClient(sbotOpts, (err, sbot) => {
            if(err) reject(err);
            sbot.publish(message)
                .then((d) => { 
                    console.log(`your message : ${JSON.stringify(message)} plubished`);
                    sbot.close();
                    resolve();
                })
                .catch((err) => {
                    reject(err)
                });
        })
    });
}

let main = async() => {
    const ipfs = ipfsClient(ipfsOpts);
    let identity = await ipfs.id();
    let addrs = await ipfs.swarm.localAddrs();
    let ipfsWebUIpinSet = await ipfs.pin.add(ipfsWebUiHash);
    let wholeAddrs = excludeLan(addrs);
    let ssbId = await whoami();
    let friends = await ssbFriends();
    let localRepositoryPath = Path.join(homePath, identity.id);
    console.log(`Checking local repository ${localRepositoryPath}`)
    console.log(`pin set webui ${JSON.stringify(ipfsWebUIpinSet)}`)
    if(!FS.existsSync(localRepositoryPath)){
        console.log(`Create ${localRepositoryPath}`)
        FS.mkdirSync(localRepositoryPath);
        FS.mkdirSync(Path.join(localRepositoryPath, 'G1SSB'))
    }else {
        console.log(`${localRepositoryPath} exist`)
    }
    
    let ipfsNodeIdRequest = await ssbRequest({"query":[{"$filter":{"value":{"content":{"type":"ipfsnodeid"}}}}]});
    publish({"type":"ipfsnodeid", "text": identity.id});
    
    for(var i = 0; i < wholeAddrs.length; i++) {
        publish({"type": "ipfstryme", "text": wholeAddrs[i].toString() + "/p2p/"+identity.id})
    }

    console.log(`${identity.id} checking bootstrap peer`);
    clearBootstrapPeers(ipfs);
    console.log(`${identity.id} checking swarm peers`);
    clearSwarmPeers(ipfs);
    console.log(`${identity.id} all bootstrap peers and swarm peers are disconnected`)
    console.log(`your ssb id ${ssbId.id}`)
    for(var i = 0; i < friends.length; i++) {
        console.log(`checking ${friends[i]} have ipfs node`);
        let ipfsTryMes = await ssbRequest({"query":[{"$filter":{"value":{"author": friends[i], "content":{"type":"ipfstryme"}}}}]});
        let recentIpfsTryMe = findRecent(ipfsTryMes);
        if(recentIpfsTryMe)
            connectOnSwarm(ipfs, recentIpfsTryMe.value.content.text);
        else
            console.log(`checking ${friends[i]} haven't ipfs node`)
    }
}

main();