{% extends "base.html" %}

{% block title %}编辑方案 - 钢琴练习方案系统{% endblock %}

{% block page_css %}
<style>
.edit-plan-footer {
    display: flex;
    justify-content: flex-end;
    gap: 0.5rem;
    padding: 1rem;
    border-top: 1px solid #dee2e6;
    background: #f8f9fa;
    position: sticky;
    bottom: 0;
}
</style>
{% endblock %}

{% block content %}
<div class="d-flex justify-content-between align-items-center mb-4">
    <h4><i class="bi bi-edit"></i> 编辑方案</h4>
    <div>
        <a href="/plan/{{ plan_id }}" class="btn btn-outline-secondary" onclick="location.replace(this.href); return false;">
            <i class="bi bi-arrow-left"></i> 返回详情
        </a>
    </div>
</div>

<div class="card">
    <div class="card-body">
        <ul class="nav nav-tabs" id="editContentTabs" role="tablist">
            <li class="nav-item" role="presentation">
                <button class="nav-link active" id="aiReport-tab" data-bs-toggle="tab" data-bs-target="#aiReportPane" type="button">AI报告</button>
            </li>
            <li class="nav-item" role="presentation">
                <button class="nav-link" id="dailySchedule-tab" data-bs-toggle="tab" data-bs-target="#dailySchedulePane" type="button">每日练习计划</button>
            </li>
        </ul>
        <div class="tab-content mt-3" id="editContentTabContent">
            <div class="tab-pane fade show active" id="aiReportPane" role="tabpanel">
                <div class="alert alert-info">
                    <i class="bi bi-info-circle"></i> 使用 Markdown 格式编辑AI报告，支持标题、列表、加粗等格式
                </div>
                <textarea id="editAiReport" style="display:none;"></textarea>
                <div id="editAiReportEditor"></div>
            </div>
            <div class="tab-pane fade" id="dailySchedulePane" role="tabpanel">
                <div class="alert alert-info mb-2">
                    <i class="bi bi-info-circle"></i> 支持拖拽排序，双击单元格编辑、点击+添加行、点击×删除行
                </div>
                <div id="editDailyScheduleTable" style="height: 400px; max-height: 600px;"></div>
                <button type="button" class="btn btn-outline-primary btn-sm mt-2" onclick="addScheduleRow()">
                    <i class="bi bi-plus"></i> 添加一行
                </button>
            </div>
        </div>
    </div>
    <div class="edit-plan-footer">
        <button type="button" class="btn btn-secondary" onclick="location.replace('/plan/{{ plan_id }}')">取消</button>
        <button type="button" class="btn btn-primary" onclick="savePlanContent()">
            <i class="bi bi-save"></i> 保存
        </button>
    </div>
</div>
{% endblock %}

{% block extra_js %}
<script>
let planContentEditor = null;
let scheduleTable = null;
let editPlanOriginalState = { ai_report: '', scheduleData: [] };

window.pageInit = function() {
    loadPlanForEdit();
};

async function loadPlanForEdit() {
    const planId = {{ plan_id }};
    try {
        const resp = await fetch(`/api/plans/${planId}`);
        const data = await resp.json();
        window.currentStudentId = data.student_id;
        const content = typeof data.content === 'string' ? JSON.parse(data.content) : data.content;

        document.getElementById('editAiReport').value = content.ai_report || '';

        if (planContentEditor) {
            planContentEditor.toTextArea();
            planContentEditor = null;
        }
        planContentEditor = new EasyMDE({
            element: document.getElementById('editAiReport'),
            spellChecker: false,
            status: false,
            toolbar: ['bold', 'italic', 'heading', '|', 'code', 'quote', 'unordered-list', '|', 'side-by-side', 'fullscreen'],
            initialValue: content.ai_report || ''
        });

        const scheduleData = (content.daily_schedule || []).map(item => ({
            phase: item.phase || '',
            duration: item.duration || '',
            content: item.content || '',
            purpose: item.purpose || ''
        }));

        editPlanOriginalState.ai_report = content.ai_report || '';
        editPlanOriginalState.scheduleData = JSON.parse(JSON.stringify(scheduleData));

        if (scheduleTable) {
            scheduleTable.destroy();
            scheduleTable = null;
        }
        scheduleTable = new Tabulator("#editDailyScheduleTable", {
            height: "100%",
            data: scheduleData,
            layout: "fitColumns",
            movableRows: true,
            editable: true,
            addRowPos: "bottom",
            columns: [
                { title: "环节", field: "phase", editor: "input", width: 120 },
                { title: "时长", field: "duration", editor: "input", width: 100 },
                { title: "内容", field: "content", editor: "input", minWidth: 200 },
                { title: "目的", field: "purpose", editor: "input", minWidth: 150 },
                {
                    title: "操作",
                    width: 80,
                    formatter: function(cell) {
                        return "<button type='button' class='btn btn-sm btn-outline-danger'><i class='bi bi-trash'></i></button>";
                    },
                    cellClick: function(e, cell) {
                        cell.getRow().delete();
                    }
                }
            ]
        });

    } catch (e) {
        alert('加载方案失败: ' + e.message);
    }
}

function addScheduleRow() {
    if (scheduleTable) {
        scheduleTable.addRow({ phase: '', duration: '', content: '', purpose: '' });
    }
}

async function savePlanContent() {
    const planId = {{ plan_id }};
    const currentAiReport = planContentEditor ? planContentEditor.value() : document.getElementById('editAiReport').value;
    const tableData = scheduleTable ? scheduleTable.getData() : [];

    const hasChanges = currentAiReport !== editPlanOriginalState.ai_report ||
        JSON.stringify(tableData) !== JSON.stringify(editPlanOriginalState.scheduleData);

    if (!hasChanges) {
        alert('没有修改，无需保存');
        return;
    }

    if (!confirm('确定要保存修改吗？')) return;

    try {
        const resp = await fetch(`/api/plans/${planId}/content`, {
            method: 'PUT',
            headers: { 'Content-Type': 'application/json' },
            body: JSON.stringify({
                content: JSON.stringify({ ai_report: currentAiReport, daily_schedule: tableData })
            })
        });

        if (resp.ok) {
            // 保存后返回上一页（编辑页的上一页是方案详情，已从bfcache恢复）
            history.back();
        } else {
            alert('保存失败');
        }
    } catch (e) {
        alert('保存失败: ' + e.message);
    }
}
</script>
{% endblock %}