/* Copyright (c) 2025-2026 马建军. All rights reserved.
 * 专有软件 — 未经授权禁止复制、传播、转售。
 * 详见 LICENSE.zh-CN.txt
 */
(function () {
    var trendPayload = null;

    function jsonPost(url, body) {
        return fetch(url, {
            method: 'POST',
            headers: { 'Content-Type': 'application/json' },
            body: JSON.stringify(body || {})
        }).then(function (r) { return r.json(); });
    }

    function formData(form) {
        var fd = new FormData(form);
        var o = {};
        fd.forEach(function (v, k) { o[k] = v; });
        return o;
    }

    function showPreview(el, text, ok) {
        if (!el) return;
        if (!text) {
            el.hidden = true;
            el.textContent = '';
            return;
        }
        el.hidden = false;
        el.textContent = text;
        el.style.color = ok === false ? 'var(--loss)' : '';
    }

    function formatPlan(plan) {
        if (!plan) return '';
        var lines = [];
        if (plan.symbol) lines.push('品种：' + plan.symbol);
        if (plan.target_lots != null) lines.push('目标手数：' + plan.target_lots);
        if (plan.first_lots != null) lines.push('首仓：' + plan.first_lots + ' 手');
        if (plan.grid && plan.grid.length) {
            lines.push('补仓档位：' + plan.grid.map(function (g) { return g.price; }).join(' → '));
        }
        if (plan.message) lines.push(plan.message);
        return lines.length ? lines.join('\n') : JSON.stringify(plan, null, 2);
    }

    function formatRoll(preview) {
        if (!preview) return '';
        var lines = [];
        if (preview.add_lots != null) lines.push('加仓手数：' + preview.add_lots);
        if (preview.new_stop_loss != null) lines.push('新止损：' + preview.new_stop_loss);
        if (preview.total_lots != null) lines.push('合计手数：' + preview.total_lots);
        if (preview.worst_loss != null) lines.push('最坏亏损：' + preview.worst_loss + ' 元');
        if (preview.message) lines.push(preview.message);
        return lines.length ? lines.join('\n') : JSON.stringify(preview, null, 2);
    }

    var trendForm = document.getElementById('trend-form');
    var btnPreview = document.getElementById('btn-trend-preview');
    var btnExec = document.getElementById('btn-trend-exec');
    var previewEl = document.getElementById('trend-preview');

    if (btnPreview && trendForm) {
        btnPreview.addEventListener('click', function () {
            btnPreview.disabled = true;
            jsonPost('/api/strategy/trend/preview', formData(trendForm)).then(function (d) {
                if (!d.ok) {
                    showPreview(previewEl, d.error || '预览失败', false);
                    btnExec.hidden = true;
                    return;
                }
                trendPayload = formData(trendForm);
                showPreview(previewEl, formatPlan(d.plan), true);
                btnExec.hidden = false;
            }).finally(function () {
                btnPreview.disabled = false;
            });
        });
    }
    if (btnExec) {
        btnExec.addEventListener('click', function () {
            if (!trendPayload) return;
            btnExec.disabled = true;
            btnExec.textContent = '执行中…';
            jsonPost('/api/strategy/trend/execute', trendPayload).then(function (d) {
                if (!d.ok) { alert(d.error); return; }
                location.reload();
            }).finally(function () {
                btnExec.disabled = false;
                btnExec.textContent = '确认执行首仓';
            });
        });
    }

    var rollForm = document.getElementById('roll-form');
    var btnRollP = document.getElementById('btn-roll-preview');
    var btnRollE = document.getElementById('btn-roll-exec');
    var rollPrev = document.getElementById('roll-preview');
    if (btnRollP && rollForm) {
        btnRollP.addEventListener('click', function () {
            btnRollP.disabled = true;
            jsonPost('/api/strategy/roll/preview', formData(rollForm)).then(function (d) {
                if (!d.ok) {
                    showPreview(rollPrev, d.error, false);
                    btnRollE.hidden = true;
                    return;
                }
                showPreview(rollPrev, formatRoll(d.preview), true);
                btnRollE.hidden = false;
            }).finally(function () {
                btnRollP.disabled = false;
            });
        });
    }
    if (btnRollE && rollForm) {
        btnRollE.addEventListener('click', function () {
            btnRollE.disabled = true;
            btnRollE.textContent = '执行中…';
            jsonPost('/api/strategy/roll/execute', formData(rollForm)).then(function (d) {
                if (!d.ok) { alert(d.error); return; }
                location.reload();
            }).finally(function () {
                btnRollE.disabled = false;
                btnRollE.textContent = '执行滚仓';
            });
        });
    }

    var btnStop = document.getElementById('btn-trend-stop');
    if (btnStop) {
        btnStop.addEventListener('click', function () {
            var pid = document.querySelector('#trend-stop-form input[name=plan_id]');
            jsonPost('/api/strategy/trend/stop', { plan_id: pid ? pid.value : 0 }).then(function (d) {
                if (!d.ok) { alert(d.error); return; }
                location.reload();
            });
        });
    }
})();