dekun
341 lines
10 KiB
JavaScript
341 lines
10 KiB
JavaScript
/**
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* 实盘下单：填完币种与止盈止损后，在表单下方显示预估风险 / 预估盈利 / 预估盈亏比。
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* 以损定仓：风险 = 当前交易基数 × risk%。
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* 全仓杠杆：风险 = 可用保证金×缓冲 × 杠杆 × |SL-入场|/入场（与开仓 calc_risk_amount_from_plan 一致）。
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*/
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(function (global) {
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"use strict";
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let debounceMs = 400;
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let minRr = 1.5;
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let debounceTimer = null;
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let fetchSeq = 0;
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function $(id) {
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return document.getElementById(id);
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}
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function num(v) {
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const n = Number(v);
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return Number.isFinite(n) ? n : null;
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}
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function formatRr(rr) {
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if (rr === null || typeof rr === "undefined") return "—";
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const n = Number(rr);
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if (!Number.isFinite(n)) return "—";
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const body = Number.isInteger(n) ? String(n) : String(parseFloat(n.toFixed(2)));
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return body + ":1";
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}
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function formatU(v) {
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if (v === null || typeof v === "undefined" || !Number.isFinite(Number(v))) return "—";
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return Number(v).toFixed(2) + "U";
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}
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function setMetric(el, label, valueText) {
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if (!el) return;
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el.innerHTML = label + "：<strong>" + valueText + "</strong>";
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}
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function sizingMode() {
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return (document.body && document.body.getAttribute("data-position-sizing-mode")) || "risk";
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}
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function isFullMarginMode() {
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return sizingMode() === "full_margin";
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}
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function fullMarginBuffer() {
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const n = Number(document.body && document.body.getAttribute("data-full-margin-buffer"));
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return Number.isFinite(n) && n > 0 ? n : 0.9;
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}
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function leverageForSymbol(sym) {
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const u = (sym || "").trim().toUpperCase();
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const btc = Number(document.body && document.body.getAttribute("data-btc-leverage"));
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const alt = Number(document.body && document.body.getAttribute("data-alt-leverage"));
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if (u.startsWith("BTC") || u.startsWith("ETH")) {
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return Number.isFinite(btc) && btc > 0 ? btc : 10;
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}
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return Number.isFinite(alt) && alt > 0 ? alt : 5;
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}
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function riskPercent() {
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const form = $("add-order-form");
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const raw =
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(form && form.getAttribute("data-risk-percent")) ||
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(document.body && document.body.getAttribute("data-risk-percent")) ||
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"";
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const n = Number(raw);
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return Number.isFinite(n) && n > 0 ? n : 1;
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}
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function calcRiskFraction(direction, entry, sl) {
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const e = num(entry);
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const s = num(sl);
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if (e === null || s === null || e <= 0 || s <= 0) return null;
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let risk = 0;
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if (direction === "short") {
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risk = s - e;
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} else {
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risk = e - s;
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}
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if (risk <= 0) return null;
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return risk / e;
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}
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function calcRr(direction, entry, sl, tp) {
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const e = num(entry);
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const s = num(sl);
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const t = num(tp);
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if (e === null || s === null || t === null) return null;
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if (direction === "short") {
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if (s <= e || t >= e) return null;
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return (e - t) / (s - e);
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}
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if (s >= e || t <= e) return null;
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return (t - e) / (e - s);
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}
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function calcRrFromPct(slPct, tpPct) {
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const sl = num(slPct);
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const tp = num(tpPct);
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if (sl === null || tp === null || sl <= 0 || tp <= 0) return null;
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return tp / sl;
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}
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function calcTpFromFixedRr(direction, entry, sl, rr) {
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const e = num(entry);
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const s = num(sl);
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const r = num(rr);
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if (e === null || s === null || r === null || r <= 0) return null;
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if (direction === "short") {
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if (s <= e) return null;
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return e - (s - e) * r;
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}
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if (s >= e) return null;
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return e + (e - s) * r;
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}
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function resolveSlPrice(mode, direction, entry) {
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if (mode === "pct") {
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const slPct = num($("order-sl-pct") && $("order-sl-pct").value);
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if (slPct === null || slPct <= 0) return null;
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if (direction === "short") return entry * (1 + slPct / 100);
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return entry * (1 - slPct / 100);
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}
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return num($("order-sl") && $("order-sl").value);
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}
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function currentMode() {
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return ($("sltp-mode") && $("sltp-mode").value) || "fixed_rr";
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}
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function currentDirection() {
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return ($("order-direction") && $("order-direction").value) || "long";
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}
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function currentSymbol() {
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return (($("order-symbol") && $("order-symbol").value) || "").trim();
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}
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function inputsComplete(m) {
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const dir = currentDirection();
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if (!currentSymbol() || !dir) return false;
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if (m === "pct") {
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const sl = num($("order-sl-pct") && $("order-sl-pct").value);
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const tp = num($("order-tp-pct") && $("order-tp-pct").value);
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return sl !== null && tp !== null && sl > 0 && tp > 0;
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}
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if (m === "fixed_rr") {
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const sl = num($("order-sl") && $("order-sl").value);
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const rr = num($("order-fixed-rr") && $("order-fixed-rr").value);
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return sl !== null && rr !== null && sl > 0 && rr > 0;
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}
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const sl = num($("order-sl") && $("order-sl").value);
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const tp = num($("order-tp") && $("order-tp").value);
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return sl !== null && tp !== null && sl > 0 && tp > 0;
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}
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function paintEmpty() {
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setMetric($("order-risk-preview"), "预估风险", "—");
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setMetric($("order-profit-preview"), "预估盈利", "—");
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setMetric($("order-rr-preview"), "预估盈亏比", "—");
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}
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function paintLoading() {
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setMetric($("order-risk-preview"), "预估风险", "计算中…");
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setMetric($("order-profit-preview"), "预估盈利", "计算中…");
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setMetric($("order-rr-preview"), "预估盈亏比", "计算中…");
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}
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function paintFail(kind) {
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const msg = kind === "fetch_fail" ? "取价失败" : "无效";
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setMetric($("order-risk-preview"), "预估风险", msg);
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setMetric($("order-profit-preview"), "预估盈利", msg);
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setMetric($("order-rr-preview"), "预估盈亏比", msg);
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}
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function paintOk(riskU, profitU, rr) {
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setMetric($("order-risk-preview"), "预估风险", formatU(riskU));
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setMetric($("order-profit-preview"), "预估盈利", formatU(profitU));
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const rrEl = $("order-rr-preview");
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const rrText = formatRr(rr);
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setMetric(rrEl, "预估盈亏比", rrText);
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if (rrEl && rr !== null && Number.isFinite(Number(rr))) {
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rrEl.classList.toggle("order-preview-rr-low", Number(rr) < minRr);
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rrEl.classList.toggle("order-preview-rr-ok", Number(rr) >= minRr);
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}
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}
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function plannedRiskFromRiskMode(capital) {
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const cap = num(capital);
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if (cap === null || cap <= 0) return null;
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return Math.round((cap * riskPercent()) / 100 * 100) / 100;
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}
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function plannedRiskFromFullMargin(availableUsdt, symbol, direction, entry, sl) {
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const avail = num(availableUsdt);
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if (avail === null || avail <= 0) return null;
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const slPx = num(sl);
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const entryPx = num(entry);
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if (slPx === null || entryPx === null) return null;
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const rf = calcRiskFraction(direction, entryPx, slPx);
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if (rf === null) return null;
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const margin = Math.round(avail * fullMarginBuffer() * 100) / 100;
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const lev = leverageForSymbol(symbol);
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return Math.round(margin * lev * rf * 100) / 100;
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}
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function resolvePreviewRr(m, dir, entry) {
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if (m === "pct") {
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return calcRrFromPct(
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$("order-sl-pct") && $("order-sl-pct").value,
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$("order-tp-pct") && $("order-tp-pct").value
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);
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}
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const sl = num($("order-sl") && $("order-sl").value);
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if (m === "fixed_rr") {
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const fixed = num($("order-fixed-rr") && $("order-fixed-rr").value);
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if (fixed !== null && fixed > 0) return fixed;
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const tp = calcTpFromFixedRr(dir, entry, sl, fixed);
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return calcRr(dir, entry, sl, tp);
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}
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const tp = num($("order-tp") && $("order-tp").value);
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return calcRr(dir, entry, sl, tp);
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}
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function refreshNow() {
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if (!$("order-plan-preview")) return;
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const m = currentMode();
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if (!inputsComplete(m)) {
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paintEmpty();
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return;
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}
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const sym = currentSymbol();
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const dir = currentDirection();
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const seq = ++fetchSeq;
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paintLoading();
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const defaultsP = fetch(
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"/api/order_defaults?symbol=" +
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encodeURIComponent(sym) +
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"&direction=" +
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encodeURIComponent(dir)
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).then(function (r) {
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return r.json();
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});
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const capitalP = fetch("/api/account_snapshot").then(function (r) {
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return r.json();
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});
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Promise.all([defaultsP, capitalP])
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.then(function (results) {
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if (seq !== fetchSeq) return;
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const data = results[0];
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const account = results[1] || {};
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if (!data.ok) {
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paintFail("fetch_fail");
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return;
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}
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const entry = num(data.last_price != null ? data.last_price : data.price);
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if (entry === null) {
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paintFail("fetch_fail");
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return;
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}
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const rr = resolvePreviewRr(m, dir, entry);
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if (rr === null) {
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paintFail("invalid");
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return;
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}
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let riskU = null;
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if (isFullMarginMode()) {
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const slPx = resolveSlPrice(m, dir, entry);
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const avail =
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data.available_trading_usdt != null
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? data.available_trading_usdt
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: account.available_trading_usdt;
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riskU = plannedRiskFromFullMargin(avail, sym, dir, entry, slPx);
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} else {
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riskU = plannedRiskFromRiskMode(account.current_capital);
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}
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if (riskU === null) {
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paintFail("fetch_fail");
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return;
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}
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const profitU = Math.round(riskU * rr * 100) / 100;
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paintOk(riskU, profitU, rr);
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})
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.catch(function () {
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if (seq !== fetchSeq) return;
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paintFail("fetch_fail");
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});
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}
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function schedule() {
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clearTimeout(debounceTimer);
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debounceTimer = setTimeout(refreshNow, debounceMs);
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}
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function wire(opts) {
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opts = opts || {};
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if (opts.minRr != null && Number.isFinite(Number(opts.minRr))) {
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minRr = Number(opts.minRr);
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}
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if (opts.debounceMs != null && Number.isFinite(Number(opts.debounceMs))) {
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debounceMs = Number(opts.debounceMs);
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}
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[
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"order-symbol",
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"order-direction",
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"sltp-mode",
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"order-sl",
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"order-tp",
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"order-sl-pct",
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"order-tp-pct",
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"order-fixed-rr",
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"order-leverage",
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].forEach(function (id) {
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const el = $(id);
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if (!el || el._rrPreviewBound) return;
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el._rrPreviewBound = true;
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el.addEventListener("input", schedule);
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el.addEventListener("change", schedule);
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});
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schedule();
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}
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global.ManualOrderRrPreview = {
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wire: wire,
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schedule: schedule,
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refresh: refreshNow,
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calcRr: calcRr,
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calcRrFromPct: calcRrFromPct,
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calcRiskFraction: calcRiskFraction,
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formatRr: formatRr,
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};
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})(typeof window !== "undefined" ? window : globalThis);
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