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const fs = require("fs");
const config = require("../../config");
/*
* Gets the local latest zblock
*
* Returns:
* - JSON object
* { zlatest: "Qm..." }
*
*/
function fetchZblock(zblock, res){
res.writeHead(200, { 'Content-Type': 'application/json'});
var path = config.workDir+"/ipfs/"+zblock;
res.end(JSON.stringify(JSON.parse(fs.readFileSync(path))));
};
module.exports = (req, res) => {
console.log(req.query)
if ( (req.query.ipfs) && typeof req.query.ipfs === "string" && req.query.ipfs.length === 46 ){
let ipfs = req.query.ipfs;
regex= /Qm[A-Za-z0-9]{44}/;
if (regex.test(ipfs)){
if (ipfs === "QmbFMke1KXqnYyBBWxB74N4c5SBnJMVAiMNRcGu6x1AwQH" ){
res.writeHead(200, { 'Content-Type': 'application/json'});
res.end(JSON.stringify({error:"Genesis block"}));
} else {
fetchZblock(ipfs,res);
}
} else {
res.writeHead(404, { 'Content-Type': 'application/json'});
res.end(JSON.stringify({error:"Invalid data: regexp failed to pass"}));
}
} else {
res.writeHead(404, { 'Content-Type': 'application/json'});
res.end(JSON.stringify({error:"Invalid data: no valid zblock was provided"}));
}
}
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