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ICOracle.mo
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ICOracle.mo
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/**
* Module : ICOracle.mo
* Author : ICOracle Team
* Stability : Experimental
* Description: Decentralized oracle network on IC blockchain.
* Refers : https://github.com/eleven-cat/ICOracle
*/
import Array "mo:base/Array";
import Blob "mo:base/Blob";
import Hash "mo:base/Hash";
import Int "mo:base/Int";
import Int64 "mo:base/Int64";
import Iter "mo:base/Iter";
import List "mo:base/List";
import Char "mo:base/Char";
import Nat "mo:base/Nat";
import Nat32 "mo:base/Nat32";
import Nat64 "mo:base/Nat64";
import Float "mo:base/Float";
import Option "mo:base/Option";
import Principal "mo:base/Principal";
import Cycles "mo:base/ExperimentalCycles";
import Text "mo:base/Text";
import T "./lib/ICOracle";
import Time "mo:base/Time";
import Debug "mo:base/Debug";
import Error "mo:base/Error";
import Trie "./lib/Trie";
import Tools "./lib/ICLighthouse/Tools";
import Minting "./lib/CyclesMinting";
import ICHTTP "./lib/ICHTTP";
import DRC207 "./lib/ICLighthouse/DRC207";
import IC "./lib/IC";
import ICSRouter "./lib/ICLighthouse/ICSwapRouter";
import ICSwap "./lib/ICLighthouse/ICSwap";
import ICDex "./lib/ICLighthouse/ICDexTypes";
import Sonic "./lib/Sonic/Sonic";
import ICPSwap "./lib/ICPSwap/ICPSwap";
// import CertifiedData "mo:base/CertifiedData";
shared(installMsg) actor class ICOracle() = this {
type Provider = T.Provider;
type SeriesId = T.SeriesId;
type HeartbeatId = T.HeartbeatId; // interval: [start, end)
type Timestamp = T.Timestamp; // seconds
type SeriesInfo = T.SeriesInfo;
type DataItem = T.DataItem;
type RequestLog = T.RequestLog;
type Log = T.Log;
type DataResponse = T.DataResponse;
type SeriesDataResponse = T.SeriesDataResponse;
type VolatilityResponse = T.VolatilityResponse;
// Variables
private let version_: Text = "0.5";
private let name_: Text = "ICOracle";
private let tokenCanister = "imeri-bqaaa-aaaai-qnpla-cai"; // $OT
private let icswapRouter = "j4d4d-pqaaa-aaaak-aanxq-cai";
private let icdexRouter = "ltyfs-qiaaa-aaaak-aan3a-cai";
private let sonicRouter = "3xwpq-ziaaa-aaaah-qcn4a-cai";
private let MAX_RESPONSE_BYTES = 2 * 1024 * 1024;
private stable var setting_apilayer: T.OutCallAPI = { name="";host="";url="";key=""; };
private stable var setting_binance: T.OutCallAPI = { name="";host="";url="";key=""; };
private stable var setting_coinmarketcap: T.OutCallAPI = { name="";host="";url="";key=""; };
private stable var setting_coinbase: T.OutCallAPI = { name="";host="";url="";key=""; };
private stable var fee: Nat = 0; // 100000000 OT
private stable var owner: Principal = installMsg.caller;
private stable var providers = List.nil<(Provider, [SeriesId], [Principal])>();
private stable var workloads: Trie.Trie<Provider, (score: Nat, invalid: Nat)> = Trie.empty();
private stable var index: Nat = 3;
private stable var seriesInfo: Trie.Trie<SeriesId, (SeriesInfo, Timestamp)> = Trie.empty();
private stable var seriesData: Trie.Trie2D<SeriesId, HeartbeatId, DataItem> = Trie.empty();
private stable var requestLogs: Trie.Trie2D<SeriesId, HeartbeatId, Log> = Trie.empty();
private stable var seriesDataRapid: Trie.Trie2D<SeriesId, HeartbeatId, DataItem> = Trie.empty(); // TODO
private stable var requestLogsRapid: Trie.Trie2D<SeriesId, HeartbeatId, Log> = Trie.empty(); // TODO
private stable var dexs: Trie.Trie<Text, Principal> = Trie.empty();
// query from trie
private func triePage<V>(_trie: Trie.Trie<Nat,V>, _start: Nat, _page: Nat, _period: Nat) : [(Nat, V)] {
if (_page < 1 or _period < 1){
return [];
};
let offset = Nat.sub(_page, 1) * _period;
if (offset >= _start){
return [];
};
let start = Nat.sub(_start, offset);
var end: Nat = 0;
if (start > _period){
end := Nat.sub(start, _period);
};
let trie = Trie.filter<Nat, V>(_trie, func (k:Nat, v:V): Bool{ k >= end and k <= start });
return Iter.toArray(Trie.iter(trie));
// let arr = Array.filter(Iter.toArray(Trie.iter(_trie)), func (t:(Nat,V)): Bool{ t.0 >= end and t.0 <= start; });
// return arr;
};
private func _natToFloat(_n: Nat) : Float{
return Float.fromInt64(Int64.fromNat64(Nat64.fromNat(_n)));
};
private func keyb(t: Blob) : Trie.Key<Blob> { return { key = t; hash = Blob.hash(t) }; };
private func keyp(t: Principal) : Trie.Key<Principal> { return { key = t; hash = Principal.hash(t) }; };
private func keyn(t: Nat) : Trie.Key<Nat> { return { key = t; hash = Tools.natHash(t) }; };
private func keyt(t: Text) : Trie.Key<Text> { return { key = t; hash = Text.hash(t) }; };
private func _now() : Timestamp{
return Int.abs(Time.now() / 1000000000);
};
private func _onlyOwner(_caller: Principal) : Bool {
return _caller == owner;
};
private func _onlyProvider(_caller: Provider, _sid: SeriesId) : Bool {
if (_caller == Principal.fromActor(this)){ return true; };
return Option.isSome(List.find(providers, func (t: (Provider, [SeriesId], [Principal])): Bool{
(_caller == t.0 or Option.isSome(Array.find(t.2, func (s:Principal):Bool{ _caller == s })))
and Option.isSome(Array.find(t.1, func (s:SeriesId):Bool{ _sid == s or s == 0 }))
}));
};
private func _onlyAnon(_caller: Principal) : Bool{
return Tools.principalForm(_caller) == #AnonymousId;
};
private func _isCanister(_caller: Principal) : Bool{
return Tools.principalForm(_caller) == #OpaqueId;
};
private func _getProvider(_caller: Principal) : Provider{
switch(List.find(providers, func (t: (Provider, [SeriesId], [Principal])): Bool{
_caller == t.0 or Option.isSome(Array.find(t.2, func (s:Principal):Bool{ _caller == s }))
})){
case(?(item)){ return item.0 };
case(_){ assert(false) };
};
return Principal.fromActor(this);
};
private func _clearCache(_sid: SeriesId) : (){
var info: SeriesInfo = _getSeriesInfo(_sid);
if (info.heartbeat == 0){
return ();
};
switch(Trie.get(seriesData, keyn(_sid), Nat.equal)){
case(?(trie)){
let temp = Trie.filter(trie, func (k:HeartbeatId, v:DataItem): Bool{ _now() < k * info.heartbeat + info.cacheDuration });
seriesData := Trie.put(seriesData, keyn(_sid), Nat.equal, temp).0;
};
case(_){};
};
switch(Trie.get(requestLogs, keyn(_sid), Nat.equal)){
case(?(trie)){
let temp = Trie.filter(trie, func (k:HeartbeatId, v:Log): Bool{ _now() < k * info.heartbeat + info.conDuration });
requestLogs := Trie.put(requestLogs, keyn(_sid), Nat.equal, temp).0;
};
case(_){};
};
};
private func _chargeFee(_account: Principal, _num: Nat) : (){
// TODO
// free for whiltelist
// balance[_account] - _num*fee;
};
private func _categoryCheck(_cat: T.Category, _sid: Nat) : Bool{
switch(_cat){
case(#Crypto){ _sid >= 0 and _sid <= 999 };
case(#Currency){ _sid >= 1000 and _sid <= 1999 };
case(#Commodity){ _sid >= 2000 and _sid <= 2999 };
case(#Stock){ _sid >= 3000 and _sid <= 9999 };
case(#Economy){ _sid >= 10000 and _sid <= 19999 };
case(#Weather){ _sid >= 20000 and _sid <= 29999 };
case(#Other){ _sid >= 30000 and _sid <= 99999 };
case(#Sports){ _sid >= 100000 and _sid <= 999999 };
case(#Social){ _sid >= 1000000 and _sid <= 9999999 };
};
};
private func _getSeries(_sid: SeriesId, _page: Nat, _periodSeconds: Nat): [(Timestamp, Nat)]{
var info: SeriesInfo = _getSeriesInfo(_sid);
if (info.heartbeat == 0){
return [];
};
var start: Nat = _now() / info.heartbeat;
var period = _periodSeconds / info.heartbeat + 1;
switch(Trie.get(seriesData, keyn(_sid), Nat.equal)){
case(?(trie)){
return Array.map<(HeartbeatId, DataItem), (Timestamp, Nat)>(triePage<DataItem>(trie, start, _page, period),
func (t: (HeartbeatId, DataItem)): (Timestamp, Nat){ (t.1.timestamp, t.1.value) }
);
};
case(_){
return [];
};
};
};
private func _getDataItem(_sid: SeriesId, _ts: Timestamp): ?(Timestamp, Nat){
var info: SeriesInfo = _getSeriesInfo(_sid);
if (info.heartbeat == 0){
return null;
};
var pid = _ts / info.heartbeat;
switch(Trie.get(seriesData, keyn(_sid), Nat.equal)){
case(?(trie)){
while(pid >= _getSeriesCreationTime(_sid) / info.heartbeat){
switch(Trie.get(trie, keyn(pid), Nat.equal)){
case(?(v)){ return ?(v.timestamp, v.value); };
case(_){
pid -= 1;
};
};
};
return null;
};
case(_){
return null;
};
};
};
private func _setDataItem(_sid: SeriesId, _pid: HeartbeatId, _value: DataItem): (){
seriesData := Trie.put2D(seriesData, keyn(_sid), Nat.equal, keyn(_pid), Nat.equal, _value);
_clearCache(_sid);
};
private func _getLog(_sid: SeriesId, _pid: HeartbeatId): ?Log{
switch(Trie.get(requestLogs, keyn(_sid), Nat.equal)){
case(?(trie)){
switch(Trie.get(trie, keyn(_pid), Nat.equal)){
case(?(v)){
return ?v;
};
case(_){
return null;
};
};
};
case(_){
return null;
};
};
};
private func _requestData(_sid: SeriesId, _pid: HeartbeatId, _item: RequestLog): (){
switch(_getLog(_sid, _pid)){
case(?(log)){
requestLogs := Trie.put2D(requestLogs, keyn(_sid), Nat.equal, keyn(_pid), Nat.equal, {
confirmed = log.confirmed;
requestLogs = Tools.arrayAppend(log.requestLogs, [_item]);
});
};
case(_){
requestLogs := Trie.put2D(requestLogs, keyn(_sid), Nat.equal, keyn(_pid), Nat.equal, {
confirmed = false;
requestLogs = [_item];
});
};
};
_clearCache(_sid);
};
private func _confirmData(_sid: SeriesId, _pid: HeartbeatId): (){
switch(_getLog(_sid, _pid)){
case(?(log)){
requestLogs := Trie.put2D(requestLogs, keyn(_sid), Nat.equal, keyn(_pid), Nat.equal, {
confirmed = true;
requestLogs = log.requestLogs;
});
};
case(_){};
};
};
private func _setWorkload(_account: Principal, _score: ?Nat, _invalid: ?Nat) : (){
switch(Trie.get(workloads, keyp(_account), Principal.equal)){
case(?(work)){
let score = work.0 + Option.get(_score, 0);
let invalid = work.1 + Option.get(_invalid, 0);
workloads := Trie.put(workloads, keyp(_account), Principal.equal, (score, invalid)).0;
};
case(_){
let score = Option.get(_score, 0);
let invalid = Option.get(_invalid, 0);
workloads := Trie.put(workloads, keyp(_account), Principal.equal, (score, invalid)).0;
};
};
};
private func _getSeriesInfo(_sid: SeriesId): SeriesInfo{
var info: SeriesInfo = {
name = "";
base = "";
quote = "";
decimals = 0;
heartbeat = 0; // seconds
conMaxDevRate = 0; // ‱ permyriad
conMinRequired = 0;
conDuration = 0;
cacheDuration = 0;
sourceType = #HybridOracle;
sourceName = "";
};
switch(Trie.get(seriesInfo, keyn(_sid), Nat.equal)){
case(?(item)){ return item.0 };
case(_){ assert(false); return info; };
};
};
private func _getSeriesCreationTime(_sid: SeriesId): Nat{
switch(Trie.get(seriesInfo, keyn(_sid), Nat.equal)){
case(?(item)){ return item.1 };
case(_){ return 0; };
};
};
private func _setData(_account: Principal, _sid: SeriesId, _request: RequestLog) : (confirmed: Bool){
var info: SeriesInfo = _getSeriesInfo(_sid);
if (info.heartbeat == 0){
assert(false);
};
let pid = _request.request.timestamp / info.heartbeat;
//check
assert(_now() < _request.request.timestamp + info.conDuration);
_setWorkload(_account, ?1, null);
var puted : Bool = false;
switch(_getLog(_sid, pid)){
case(?(log)){
if (Option.isSome(Array.find(log.requestLogs, func (t:RequestLog):Bool{ t.provider == _request.provider }))) { puted := true; };
if (log.confirmed) { return true; };
};
case(_){};
};
//put
if (not(puted)){
_requestData(_sid, pid, _request);
};
//cons
return _consensus(_sid, pid);
};
private func _consensus(_sid: SeriesId, _pid: HeartbeatId) : (confirmed: Bool){
var info: SeriesInfo = _getSeriesInfo(_sid);
if (info.heartbeat == 0){
assert(false);
};
switch(_getLog(_sid, _pid)){
case(?(log)){
if (log.confirmed) { return true; }
else{
var count: Nat = 0;
var sum: Nat = 0;
for (request in log.requestLogs.vals()){
count += 1;
sum += request.request.value;
};
var avg = sum / count;
var confirmed: Nat = 0;
var newSum: Nat = 0;
for (request in log.requestLogs.vals()){
if (request.request.value >= avg and Nat.sub(request.request.value, avg) * 10000 / avg <= info.conMaxDevRate ){
confirmed += 1;
newSum += request.request.value;
} else if (request.request.value < avg and Nat.sub(avg, request.request.value) * 10000 / avg <= info.conMaxDevRate ){
confirmed += 1;
newSum += request.request.value;
};
};
if (confirmed >= info.conMinRequired){
_confirmData(_sid, _pid);
_setDataItem(_sid, _pid, {timestamp = _now(); value = newSum / confirmed });
for (request in log.requestLogs.vals()){
if (request.request.value >= avg and Nat.sub(request.request.value, avg) * 10000 / avg <= info.conMaxDevRate ){
_setWorkload(request.provider, ?1, null);
} else if (request.request.value < avg and Nat.sub(avg, request.request.value) * 10000 / avg <= info.conMaxDevRate ){
_setWorkload(request.provider, ?1, null);
}else{
_setWorkload(request.provider, null, ?1);
};
};
return true;
}else{
return false;
};
};
};
case(_){ return false; };
};
};
// auto request
private func _requestFromICSwap(_sid: SeriesId, _pair: Principal, _reverse: Bool): async (){
let dex: ICSwap.Self = actor(Principal.toText(_pair));
let provider = Principal.fromActor(this);
let liquid = await dex.liquidity(null);
switch(Trie.get(seriesInfo, keyn(_sid), Nat.equal)){
case(?(item)){
let decimals = item.0.decimals;
var conversionRate: Nat = 0;
if (not(_reverse) and liquid.value0 > 0){
conversionRate := (10**decimals) * liquid.value1 / liquid.value0;
}else if (liquid.value1 > 0){
conversionRate := (10**decimals) * liquid.value0 / liquid.value1;
};
if (conversionRate > 0){
var req : RequestLog = {
request = { value = conversionRate; timestamp = _now(); };
provider = provider;
time = _now();
signature = null;
};
ignore _setData(provider, _sid, req);
};
};
case(_){};
};
};
private func _requestFromDex(_sid: SeriesId, _dexName: Text, _pair: Principal, _reverse: Bool) : async (){
if (_dexName == "icswap"){
await _requestFromICSwap(_sid, _pair, _reverse);
};
};
private func _requestFromDexByTokens(_sid: SeriesId, _dexName: Text, _token0: Principal, _token1: Principal, _reverse: Bool) : async (){
if (_dexName == "icswap"){
let router: ICSRouter.Self = actor(icswapRouter);
let temp = await router.route(_token0, _token1, ?_dexName);
if (temp.size() > 0){
await _requestFromICSwap(_sid, temp[0].0, _reverse);
};
};
};
private func _requestIcpXdr() : async (){
var sid: Nat = 1;
let provider = Principal.fromActor(this);
let minting: Minting.Self = actor("rkp4c-7iaaa-aaaaa-aaaca-cai");
let icpXdr = await minting.get_icp_xdr_conversion_rate();
var req : RequestLog = {
request = { value = Nat64.toNat(icpXdr.data.xdr_permyriad_per_icp); timestamp = Nat64.toNat(icpXdr.data.timestamp_seconds); };
provider = provider;
time = _now();
signature = null;
};
ignore _setData(provider, sid, req);
sid := 2;
switch(_getDataItem(0, _now())){
case(?(xdrUsd)){
req := {
request = { value = req.request.value * xdrUsd.1 / 10000; timestamp = Nat64.toNat(icpXdr.data.timestamp_seconds); };
provider = provider;
time = _now();
signature = null;
};
ignore _setData(provider, sid, req);
};
case(_){};
};
};
// https outcalls
private func _textToNat(txt : Text) : Nat {
assert (txt.size() > 0);
let chars = txt.chars();
var num : Nat = 0;
for (v in chars) {
if (Char.toNat32(v) == 10 or Char.toNat32(v) == 13 or Char.toNat32(v) == 32 or Char.toNat32(v) == 44 or Char.toNat32(v) == 95){
// \n \r (space) , _
//skip
}else {
let charToNum = Nat32.toNat(Char.toNat32(v) - 48);
assert (charToNum >= 0 and charToNum <= 9);
num := num * 10 + charToNum;
};
};
return num;
};
private func _textToFloat(txt : Text) : Float {
//assert (txt.size() > 0);
let chars = txt.chars();
var num : Nat = 0;
var res : Float = 0.0;
var isDecimalPart : Bool = false;
var decimalsCount : Nat = 0;
for (v in chars) {
if (Char.toNat32(v) == 10 or Char.toNat32(v) == 13 or Char.toNat32(v) == 32 or Char.toNat32(v) == 44 or Char.toNat32(v) == 95){
// \n \r (space) , _
//skip
}else if (Char.toNat32(v) == 46){ //.
isDecimalPart := true;
res := _natToFloat(num);
}else if (Char.toNat32(v) >= 48 and Char.toNat32(v) <= 57 ) {
let charToNum = Nat32.toNat(Char.toNat32(v) - 48);
assert (charToNum >= 0 and charToNum <= 9);
if (not(isDecimalPart)){
num := num * 10 + charToNum;
}else{
decimalsCount += 1;
res += _natToFloat(charToNum) / _natToFloat(10 ** decimalsCount)
};
};
};
if (not(isDecimalPart)) { res := _natToFloat(num) };
return res;
};
private func _floatToNat(_data : Float, _decimals: Nat) : Nat {
return Int.abs(Float.toInt(_data * _natToFloat(10 ** _decimals)));
};
public query func _call_transform(raw : IC.CanisterHttpResponsePayload) : async IC.CanisterHttpResponsePayload {
let transformed : IC.CanisterHttpResponsePayload = {
status = raw.status;
body = raw.body;
headers = [
{ name = "Content-Security-Policy"; value = "default-src 'self'"; },
{ name = "Referrer-Policy"; value = "strict-origin" },
{ name = "Permissions-Policy"; value = "geolocation=(self)" },
{ name = "Strict-Transport-Security"; value = "max-age=63072000"; },
{ name = "X-Frame-Options"; value = "DENY" },
{ name = "X-Content-Type-Options"; value = "nosniff" },
];
};
return transformed;
};
private func _decodeTS(_result : IC.CanisterHttpResponsePayload) : (Text, Nat) {
var txt : Text = "";
switch (Text.decodeUtf8(Blob.fromArray(_result.body))) {
case null { assert(false); return ("", 0); };
case (?decoded) {
var i: Nat = 0;
for (entry in Text.split(decoded, #text("\"timestamp\": "))) {
if (i == 1){
var j: Nat = 0;
for (element1 in Text.split(entry, #text("\""))) {
if (j == 0) {
txt := element1;
};
j += 1;
};
if (j == 1){
j := 0;
for (element1 in Text.split(entry, #text("}"))) {
if (j == 0) {
txt := element1;
};
j += 1;
};
};
};
i += 1;
};
return (txt, _textToNat(txt));
};
};
};
private func _decodeFX(_result : IC.CanisterHttpResponsePayload, _curr: Text, _decimals: Nat) : (Text, Nat) {
var txt : Text = "";
switch (Text.decodeUtf8(Blob.fromArray(_result.body))) {
case null { assert(false); return ("", 0); };
case (?decoded) {
var i: Nat = 0;
for (entry in Text.split(decoded, #text("\""# _curr #"\": "))) {
if (i == 1){
var j: Nat = 0;
for (element1 in Text.split(entry, #text(","))) {
if (j == 0) {
txt := element1;
};
j += 1;
};
if (j == 1){
j := 0;
for (element1 in Text.split(entry, #text(" }"))) {
if (j == 0) {
txt := element1;
};
j += 1;
};
};
};
i += 1;
};
return (txt, _floatToNat(1 / _textToFloat(txt), _decimals));
};
};
};
private func _joinArgsFX() : Text{
let trie = Trie.filter(seriesInfo, func (k:SeriesId, v:(SeriesInfo, Timestamp)):Bool{
_categoryCheck(#Currency, k) and v.0.sourceName == "apilayer"
});
var args: Text = "";
for ((sid, (info,ts)) in Trie.iter(trie)){
if (args.size() > 0){ args #= "," };
args #= info.base;
};
return args;
};
private func _fetchFX() : async (Nat, Blob, Text,Nat){ // (Nat, Blob, Text,Nat)
// var n1: Nat = 0;
// var n2: Nat = 0;
let host : Text = setting_apilayer.host;
let request_headers = [
{ name = "Host"; value = host # ":443" },
{ name = "User-Agent"; value = "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/106.0.0.0 Safari/537.36" }, // Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/106.0.0.0 Safari/537.36
{ name = "apikey"; value = setting_apilayer.key },
//{ name = "User-Agent"; value = "PostmanRuntime/7.29.2" }
];
let request : IC.CanisterHttpRequestArgs = { // "https://api.apilayer.com/fixer/latest?base=USD&symbols=XDR,EUR,GBP,JPY,AUD,CHF,NZD,CAD,HKD,CNY,KRW"
url = Text.replace(setting_apilayer.url, #text("{SYMBOLS}"), _joinArgsFX()); //"https://api.apilayer.com/exchangerates_data/latest?base=USD&symbols=XDR,EUR,GBP,JPY,AUD,CHF,NZD,CAD,HKD,SGD,CNY,KRW,TRY,INR,RUB,MXN,ZAR,SEK,DKK,THB,VND,MYR,TWD,BRL";
max_response_bytes = ?Nat64.fromNat(MAX_RESPONSE_BYTES);
headers = request_headers;
body = null;
method = #get;
transform = ?(#function(_call_transform));
};
//try {
Cycles.add(220_000_000_000);
let ic : IC.Self = actor ("aaaaa-aa");
let response = await ic.http_request(request);
// n1 := response.body.size();
// n2 := response.status;
let provider = Principal.fromActor(this);
let ts = _decodeTS(response);
let timestamp = ts.1;
for((sid, (info,time)) in Trie.iter(seriesInfo)){
if (sid == 0 or (_categoryCheck(#Currency, sid) and info.sourceName == "apilayer")){
try{
let result = _decodeFX(response, info.base, info.decimals);
if (result.1 > 0){
var req : RequestLog = {
request = { value = result.1; timestamp = timestamp; };
provider = provider;
time = _now();
signature = null;
};
ignore _setData(provider, sid, req);
};
// return (response.status, Blob.fromArray(response.body), result.0, result.1);
} catch (err) {};
};
};
return (response.status, Blob.fromArray(response.body), request.url, ts.1);
// } catch (err) {
// Debug.print(Error.message(err));
// return (0, Blob.fromArray([]), "Error", 0);
// };
};
private func _decodeBA(_result : IC.CanisterHttpResponsePayload, _curr: Text, _decimals: Nat) : (Text, Nat) {
var txt : Text = "";
switch (Text.decodeUtf8(Blob.fromArray(_result.body))) {
case null { assert(false); return ("", 0); };
case (?decoded) {
var i: Nat = 0;
for (entry in Text.split(decoded, #text("\""# _curr #"\",\"price\":\""))) {
if (i == 1){
var j: Nat = 0;
for (element1 in Text.split(entry, #text("\"}"))) {
if (j == 0) {
txt := element1;
};
j += 1;
};
};
i += 1;
};
return (txt, _floatToNat(_textToFloat(txt), _decimals));
};
};
};
private func _joinArgsBA() : Text{
let trie = Trie.filter(seriesInfo, func (k:SeriesId, v:(SeriesInfo, Timestamp)):Bool{
_categoryCheck(#Crypto, k) and v.0.sourceName == "binance"
});
var args: Text = "";
for ((sid, (info,ts)) in Trie.iter(trie)){
if (args.size() > 0){ args #= "," };
args #= "%22"# info.base # info.quote #"%22";
};
return args;
};
private func _fetchBA() : async (Nat, Blob, Text,Nat){ // (Nat, Blob, Text,Nat)
// var n1: Nat = 0;
// var n2: Nat = 0;
let host : Text = setting_binance.host;
let request_headers = [
{ name = "Host"; value = host # ":443" },
{ name = "User-Agent"; value = "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/106.0.0.0 Safari/537.36" }, // Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/106.0.0.0 Safari/537.36
//{ name = "apikey"; value = setting_binance.key },
//{ name = "User-Agent"; value = "PostmanRuntime/7.29.2" }
];
let request : IC.CanisterHttpRequestArgs = { // Text.replace(setting_binance.url, #text("{SYMBOLS}"), _joinArgsBA()); //
url = Text.replace(setting_binance.url, #text("{SYMBOLS}"), _joinArgsBA()); // "https://api.binance.com/api/v3/ticker/price?symbols=[%22BTCUSDT%22,%22BNBUSDT%22]";
max_response_bytes = ?Nat64.fromNat(MAX_RESPONSE_BYTES);
headers = request_headers;
body = null;
method = #get;
transform = ?(#function(_call_transform));
};
//for debug // return (0, Blob.fromArray([]), request.url, 0);
//try {
Cycles.add(220_000_000_000);
let ic : IC.Self = actor ("aaaaa-aa");
let response = await ic.http_request(request);
// n1 := response.body.size();
// n2 := response.status;
let provider = Principal.fromActor(this);
let timestamp = _now();
for((sid, (info,time)) in Trie.iter(seriesInfo)){
if (_categoryCheck(#Crypto, sid) and info.sourceName == "binance"){
try {
let result = _decodeBA(response, info.base#info.quote, info.decimals);
if (result.1 > 0){
var req : RequestLog = {
request = { value = result.1; timestamp = timestamp; };
provider = provider;
time = _now();
signature = null;
};
ignore _setData(provider, sid, req);
};
// return (response.status, Blob.fromArray(response.body), result.0, result.1);
} catch (err) {};
};
};
return (response.status, Blob.fromArray(response.body), request.url, timestamp);
// } catch (err) {
// Debug.print(Error.message(err));
// return (0, Blob.fromArray([]), "Error", 0);
// };
};
private func _decodeCMC(_result : IC.CanisterHttpResponsePayload, _curr: Text, _decimals: Nat) : (Text, Nat) {
var txt : Text = "";
switch (Text.decodeUtf8(Blob.fromArray(_result.body))) {
case null { assert(false); return ("", 0); };
case (?decoded) {
var i: Nat = 0;
for (entry in Text.split(decoded, #text("\""# _curr #"\""))) {
if (i == 1){
var j: Nat = 0;
for (element1 in Text.split(entry, #text("\"price\":"))) {
if (j == 1) {
var k: Nat = 0;
for (element2 in Text.split(element1, #text(","))) {
if (k == 0){
txt := element2;
};
k += 1;
};
};
j += 1;
};
};
i += 1;
};
return (txt, _floatToNat(_textToFloat(txt), _decimals));
};
};
};
public query func _cmc_transform(raw : IC.CanisterHttpResponsePayload) : async IC.CanisterHttpResponsePayload {
var txt : Text = "";
switch (Text.decodeUtf8(Blob.fromArray(raw.body))) {
case null {};
case (?decoded) {
var i: Nat = 0;
for (entry in Text.split(decoded, #text("\"data\":"))) {
if (i == 1){
txt := entry;
};
i += 1;
};
};
};
let transformed : IC.CanisterHttpResponsePayload = {
status = raw.status;
body = Blob.toArray(Text.encodeUtf8(txt));
headers = [
{ name = "Content-Security-Policy"; value = "default-src 'self'"; },
{ name = "Referrer-Policy"; value = "strict-origin" },
{ name = "Permissions-Policy"; value = "geolocation=(self)" },
{ name = "Strict-Transport-Security"; value = "max-age=63072000"; },
{ name = "X-Frame-Options"; value = "DENY" },
{ name = "X-Content-Type-Options"; value = "nosniff" },
];
};
return transformed;
};
private func _fetchCMC() : async (Nat, Blob, Text,Nat){ // (Nat, Blob, Text,Nat)
// var n1: Nat = 0;
// var n2: Nat = 0;
let host : Text = setting_coinmarketcap.host;
let request_headers = [
{ name = "Host"; value = host # ":443" },
{ name = "User-Agent"; value = "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/106.0.0.0 Safari/537.36" }, // Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/106.0.0.0 Safari/537.36
{ name = "CMC_PRO_API_KEY"; value = setting_coinmarketcap.key },
//{ name = "User-Agent"; value = "PostmanRuntime/7.29.2" }
];
let request : IC.CanisterHttpRequestArgs = { // Text.replace(setting_coinmarketcap.url, #text("{SYMBOLS}"), _joinArgsCMC()); //
url = setting_coinmarketcap.url;
max_response_bytes = ?Nat64.fromNat(MAX_RESPONSE_BYTES);
headers = request_headers;
body = null;
method = #get;
transform = ?(#function(_cmc_transform));
};
//for debug // return (0, Blob.fromArray([]), request.url, 0);
//try {
Cycles.add(220_000_000_000);
let ic : IC.Self = actor ("aaaaa-aa");
let response = await ic.http_request(request);
// n1 := response.body.size();
// n2 := response.status;
let provider = Principal.fromActor(this);
let timestamp = _now();
for((sid, (info,time)) in Trie.iter(seriesInfo)){
if (_categoryCheck(#Crypto, sid) and info.sourceName == "coinmarketcap"){
try {
let result = _decodeCMC(response, info.base, info.decimals);
if (result.1 > 0){
var req : RequestLog = {
request = { value = result.1; timestamp = timestamp; };
provider = provider;
time = _now();
signature = null;
};
ignore _setData(provider, sid, req);
};
// return (response.status, Blob.fromArray(response.body), result.0, result.1);
} catch (err) {};
};
};
return (response.status, Blob.fromArray(response.body), request.url, timestamp);
// } catch (err) {
// Debug.print(Error.message(err));
// return (0, Blob.fromArray([]), "Error", 0);
// };
};
private func _decodeCB(_result : IC.CanisterHttpResponsePayload, _curr: Text, _decimals: Nat) : (Text, Nat) {
var txt : Text = "";
switch (Text.decodeUtf8(Blob.fromArray(_result.body))) {
case null { assert(false); return ("", 0); };
case (?decoded) {
var i: Nat = 0;
for (entry in Text.split(decoded, #text(","))) {
if (i == 4){
txt := entry;
};
i += 1;
};
return (txt, _floatToNat(_textToFloat(txt), _decimals));
};
};
};
private func _fetchCB() : async (Nat, Blob, Text,Nat){ // (Nat, Blob, Text,Nat)
// var n1: Nat = 0;
// var n2: Nat = 0;
let host : Text = setting_coinbase.host;
let request_headers = [
{ name = "Host"; value = host # ":443" },
{ name = "User-Agent"; value = "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/106.0.0.0 Safari/537.36" }, // Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/106.0.0.0 Safari/537.36
//{ name = ""; value = setting_coinbase.key },
//{ name = "User-Agent"; value = "PostmanRuntime/7.29.2" }
];
//try {
// n1 := response.body.size();
// n2 := response.status;
let provider = Principal.fromActor(this);
let timestamp = _now();
var status: Nat = 200;
var body: Blob = Blob.fromArray([]);
for((sid, (info,time)) in Trie.iter(seriesInfo)){
if (_categoryCheck(#Crypto, sid) and info.sourceName == "coinbase"){
var url = Text.replace(setting_coinbase.url, #text("{SYMBOL_BASE}"), info.base);
url := Text.replace(url, #text("{SYMBOL_QUOTE}"), info.quote);
let end = _now();
let start = Nat.sub(end, 180);
url := Text.replace(url, #text("{START}"), Nat.toText(start));
url := Text.replace(url, #text("{END}"), Nat.toText(end));
let request : IC.CanisterHttpRequestArgs = { // //
url = url;
max_response_bytes = ?Nat64.fromNat(MAX_RESPONSE_BYTES);
headers = request_headers;
body = null;
method = #get;
transform = ?(#function(_call_transform));
};
try {
Cycles.add(220_000_000_000);
let ic : IC.Self = actor ("aaaaa-aa");
let response = await ic.http_request(request);
let result = _decodeCB(response, info.base, info.decimals);
if (result.1 > 0){
var req : RequestLog = {
request = { value = result.1; timestamp = timestamp; };
provider = provider;
time = _now();
signature = null;
};
ignore _setData(provider, sid, req);
};
status := response.status;
body := Blob.fromArray(response.body);
// return (response.status, Blob.fromArray(response.body), result.0, result.1);
} catch (err) {
status := 0;
};
};
};
return (status, body, setting_coinbase.url, timestamp);
// } catch (err) {
// Debug.print(Error.message(err));
// return (0, Blob.fromArray([]), "Error", 0);
// };
};
// public methods
public query func getFee() : async Nat{
return fee;
};
public query func getSeriesInfo(_sid: SeriesId): async ?SeriesInfo{
switch(Trie.get(seriesInfo, keyn(_sid), Nat.equal)){
case(?(item)){ return ?item.0 };
case(_){ return null; };
};
};
public query(msg) func anon_getSeries(_sid: SeriesId, _page: ?Nat): async SeriesDataResponse{
assert(_onlyAnon(msg.caller));
var info: SeriesInfo = _getSeriesInfo(_sid);
if (info.heartbeat == 0){
return {name = info.name; sid = _sid; data = []; decimals = info.decimals};
};
let page = Option.get(_page, 1);
let periodSeconds = info.heartbeat * 500;
return {name = info.name; sid = _sid; data = _getSeries(_sid, page, periodSeconds); decimals = info.decimals};
};
public query(msg) func anon_get(_sid: SeriesId, _tsSeconds: ?Timestamp): async ?DataResponse{
assert(_onlyAnon(msg.caller));
var info: SeriesInfo = _getSeriesInfo(_sid);
let ts = Option.get(_tsSeconds, _now());
switch(_getDataItem(_sid, ts)){
case(?(res)){ return ?{name = info.name; sid = _sid; data = res; decimals = info.decimals}; };
case(_){ return null; };
};
};
public query(msg) func anon_latest(_cat: T.Category) : async [DataResponse]{
assert(_onlyAnon(msg.caller));
var res: [{name: Text; sid: SeriesId; decimals: Nat; data:(Timestamp, Nat)}] = [];
for ((sid, info) in Trie.iter(seriesInfo)){
if (_categoryCheck(_cat, sid)){
switch(_getDataItem(sid, _now())){
case(?(v)){ res := Tools.arrayAppend(res, [{name=info.0.name; sid=sid; decimals=info.0.decimals; data=v}]) };
case(_){};
};
};
};
return res;
};
public shared(msg) func getSeries(_sid: SeriesId, _page: ?Nat): async SeriesDataResponse{
var info: SeriesInfo = _getSeriesInfo(_sid);
if (info.heartbeat == 0){
return {name = info.name; sid = _sid; data = []; decimals = info.decimals};
};
_chargeFee(msg.caller, 2);
let page = Option.get(_page, 1);
let periodSeconds = info.heartbeat * 500; // page size = 500
return {name = info.name; sid = _sid; data = _getSeries(_sid, page, periodSeconds); decimals = info.decimals};
};
public shared(msg) func get(_sid: SeriesId, _tsSeconds: ?Timestamp): async ?DataResponse{
var info: SeriesInfo = _getSeriesInfo(_sid);
let ts = Option.get(_tsSeconds, _now());
switch(_getDataItem(_sid, ts)){
case(?(res)){
_chargeFee(msg.caller, 1);
return ?{name = info.name; sid = _sid; data = res; decimals = info.decimals};
};
case(_){ return null; };
};
};
public shared(msg) func latest(_cat: T.Category) : async [DataResponse]{
var res: [{name: Text; sid: SeriesId; decimals: Nat; data:(Timestamp, Nat)}] = [];
for ((sid, info) in Trie.iter(seriesInfo)){
if (_categoryCheck(_cat, sid)){
switch(_getDataItem(sid, _now())){
case(?(v)){
_chargeFee(msg.caller, 2);
res := Tools.arrayAppend(res, [{name=info.0.name; sid=sid; decimals=info.0.decimals; data=v}])
};
case(_){};
};
};
};
return res;
};
public shared(msg) func volatility(_sid: SeriesId, _period: Nat): async VolatilityResponse{
var info: SeriesInfo = _getSeriesInfo(_sid);
if (info.heartbeat == 0){
assert(false);
};
assert(_period <= info.heartbeat * 4320); // 1min*4320 = 3d 5min*4320 = 15d
let s = _getSeries(_sid, 1, _period);
var count: Nat = 0;
var sum: Nat = 0;
var open: Nat = 0;
var high: Nat = 0;
var low: Nat = 0;
var close: Nat = 0;
var avg: Nat = 0;
for ((ts,v) in s.vals()){
count += 1;
sum += v;
if (count == 1) { open := v; };
if (v > high) { high := v; };
if (v < low or low == 0){ low := v; };
close := v;
};
var res: Float = 0;
if (count > 0 and sum > 0){
avg := sum / count;
res := _natToFloat(high - low) / _natToFloat(avg);
_chargeFee(msg.caller, 3);
};