{% extends "base.html" %}

{% block content %}
<div class="d-flex justify-content-between align-items-center mb-4">
    <h2><i class="bi bi-file-earmark-text"></i> {{ '编辑审批模板' if template else '新建审批模板' }}</h2>
    <a href="{{ url_for('templates') }}" class="btn btn-outline-secondary">
        <i class="bi bi-arrow-left"></i> 返回
    </a>
</div>

<div class="card">
    <div class="card-body">
        <form method="post" id="templateForm">
            <div class="mb-3">
                <label class="form-label">模板名称 <span class="text-danger">*</span></label>
                <input type="text" name="name" class="form-control" value="{{ template.name if template else '' }}" required>
            </div>

            <div class="mb-3">
                <label class="form-label">审批层数 <span class="text-danger">*</span></label>
                <div class="d-flex align-items-center gap-3">
                    <input type="number" name="level" id="levelInput" class="form-control" 
                           value="{{ template.level if template else 3 }}" min="1" max="20" required style="width: 120px;">
                    <span class="text-muted">层（可随时调整）</span>
                </div>
                <small class="text-muted">调整层数会自动增加或删除审批行</small>
            </div>

            <div class="mb-3">
                <div class="d-flex justify-content-between align-items-center mb-2">
                    <label class="form-label mb-0">审批配置</label>
                    <button type="button" class="btn btn-sm btn-outline-primary" onclick="addApproverRow()">
                        <i class="bi bi-plus-circle"></i> 添加一行
                    </button>
                </div>
                <small class="text-muted d-block mb-2">
                    💡 <strong>角色名称</strong>：显示审批层级名称（如：部门主管、财务经理）<br>
                    💡 <strong>审批岗位</strong>：系统自动匹配对应岗位的人员
                </small>
                
                <!-- ===== 三个表头（居中对齐） ===== -->
                <div class="row g-2 mb-2 fw-bold" style="font-size: 13px; color: #6c757d;">
                    <div class="col-md-4 text-center">角色名称</div>
                    <div class="col-md-4 text-center">审批岗位</div>
                    <div class="col-md-3 text-center">审批人员</div>
                    <div class="col-md-1"></div>
                </div>

                <div id="approver_config_container">
                    {% set roles = template.roles if template else [] %}
                    {% set approver_roles = template.approver_roles if template else [] %}
                    {% set persons = template.persons if template else [] %}
                    {% set level = template.level if template else 3 %}
                    
                    {% for i in range(level) %}
                    <div class="row g-2 mb-2 approver-row" data-index="{{ i }}">
                        <div class="col-md-4">
                            <input type="text" name="role_{{ i }}" class="form-control" 
                                   placeholder="角色{{ i+1 }}" 
                                   value="{{ roles[i] if i < roles|length else '' }}">
                        </div>
                        <div class="col-md-4">
                            <select name="approver_role_{{ i }}" class="form-select">
                                <option value="经办人" {% if approver_roles[i] == '经办人' %}selected{% endif %}>
                                    经办人（申请人本人）
                                </option>
                                <option value="部门负责人" {% if approver_roles[i] == '部门负责人' %}selected{% endif %}>
                                    🔄 申请人所在部门负责人
                                </option>
                                <option value="直属上级" {% if approver_roles[i] == '直属上级' %}selected{% endif %}>
                                    🔄 申请人的直属上级
                                </option>
                                {% for pos in all_positions %}
                                <option value="{{ pos.name }}" {% if approver_roles[i] == pos.name %}selected{% endif %}>
                                    {{ pos.name }}
                                </option>
                                {% endfor %}
                            </select>
                        </div>
                        <div class="col-md-3">
                            <input type="text" name="person_{{ i }}" class="form-control" 
                                   placeholder="人员{{ i+1 }}（兼容旧版）" 
                                   value="{{ persons[i] if i < persons|length else '' }}">
                            <small class="text-muted">留空则自动匹配</small>
                        </div>
                        <div class="col-md-1">
                            <button type="button" class="btn btn-sm btn-outline-danger" onclick="removeApproverRow(this)" title="删除此行">
                                <i class="bi bi-trash"></i>
                            </button>
                        </div>
                    </div>
                    {% endfor %}
                </div>
                <div id="approver_empty" style="display: none;" class="text-center text-muted py-3">
                    <i class="bi bi-inbox" style="font-size: 24px; display: block;"></i>
                    暂无审批层级，点击「添加一行」创建
                </div>
            </div>

            <div class="alert alert-info">
                <i class="bi bi-info-circle"></i>
                <strong>说明：</strong>
                <ul class="mb-0 mt-1">
                    <li><strong>🔄 申请人所在部门负责人</strong> → 系统根据申请人所在部门，自动匹配该部门的负责人</li>
                    <li><strong>固定岗位</strong> → 系统查找该岗位的人员（如：总经理、财务经理）</li>
                    <li><strong>经办人</strong> → 申请本人（用于记录发起人）</li>
                    <li>如果找不到匹配的审批人，系统会自动转交给管理员</li>
                    <li>💡 需要添加新的岗位？去 <strong>「岗位管理」</strong> 添加即可，会自动出现在此下拉列表中</li>
                </ul>
            </div>

            <div class="mt-3">
                <button type="submit" class="btn btn-primary">
                    <i class="bi bi-check-circle"></i> 保存模板
                </button>
                <a href="{{ url_for('templates') }}" class="btn btn-outline-secondary">取消</a>
            </div>
        </form>
    </div>
</div>

<script>
// ==================== 添加一行 ====================
function addApproverRow() {
    const container = document.getElementById('approver_config_container');
    const currentCount = container.querySelectorAll('.approver-row').length;
    const newIndex = currentCount;
    
    const firstSelect = container.querySelector('.approver-row select');
    const selectOptions = firstSelect ? firstSelect.innerHTML : '';
    
    const div = document.createElement('div');
    div.className = 'row g-2 mb-2 approver-row';
    div.dataset.index = newIndex;
    div.innerHTML = `
        <div class="col-md-4">
            <input type="text" name="role_${newIndex}" class="form-control" placeholder="角色${newIndex+1}">
        </div>
        <div class="col-md-4">
            <select name="approver_role_${newIndex}" class="form-select">
                ${selectOptions}
            </select>
        </div>
        <div class="col-md-3">
            <input type="text" name="person_${newIndex}" class="form-control" placeholder="人员${newIndex+1}（兼容旧版）">
            <small class="text-muted">留空则自动匹配</small>
        </div>
        <div class="col-md-1">
            <button type="button" class="btn btn-sm btn-outline-danger" onclick="removeApproverRow(this)" title="删除此行">
                <i class="bi bi-trash"></i>
            </button>
        </div>
    `;
    container.appendChild(div);
    
    document.getElementById('levelInput').value = newIndex + 1;
    updateEmptyState();
}

// ==================== 删除一行 ====================
function removeApproverRow(btn) {
    const row = btn.closest('.approver-row');
    const container = document.getElementById('approver_config_container');
    
    if (container.querySelectorAll('.approver-row').length <= 1) {
        alert('至少保留一行审批配置');
        return;
    }
    
    if (confirm('确定要删除这一行吗？')) {
        row.remove();
        reindexRows();
        document.getElementById('levelInput').value = container.querySelectorAll('.approver-row').length;
        updateEmptyState();
    }
}

// ==================== 重新整理索引 ====================
function reindexRows() {
    const container = document.getElementById('approver_config_container');
    const rows = container.querySelectorAll('.approver-row');
    rows.forEach((row, index) => {
        row.dataset.index = index;
        const inputs = row.querySelectorAll('input');
        inputs.forEach(input => {
            const name = input.getAttribute('name');
            if (name) {
                input.setAttribute('name', name.replace(/_\d+$/, `_${index}`));
            }
        });
        const selects = row.querySelectorAll('select');
        selects.forEach(select => {
            const name = select.getAttribute('name');
            if (name) {
                select.setAttribute('name', name.replace(/_\d+$/, `_${index}`));
            }
        });
    });
}

// ==================== 更新空状态显示 ====================
function updateEmptyState() {
    const container = document.getElementById('approver_config_container');
    const empty = document.getElementById('approver_empty');
    if (container.querySelectorAll('.approver-row').length === 0) {
        empty.style.display = 'block';
    } else {
        empty.style.display = 'none';
    }
}

// ==================== levelInput变化时同步行数 ====================
document.getElementById('levelInput').addEventListener('change', function() {
    const container = document.getElementById('approver_config_container');
    const currentCount = container.querySelectorAll('.approver-row').length;
    const targetCount = parseInt(this.value) || 1;
    
    if (targetCount < 1) {
        this.value = 1;
        return;
    }
    
    if (targetCount > currentCount) {
        for (let i = currentCount; i < targetCount; i++) {
            addApproverRow();
        }
    } else if (targetCount < currentCount) {
        for (let i = currentCount - 1; i >= targetCount; i--) {
            const rows = container.querySelectorAll('.approver-row');
            if (rows.length > 1) {
                rows[rows.length - 1].remove();
            }
        }
        reindexRows();
        updateEmptyState();
    }
});

// ==================== 初始化 ====================
document.addEventListener('DOMContentLoaded', function() {
    updateEmptyState();
});

// ==================== 表单提交前同步行数 ====================
document.getElementById('templateForm').addEventListener('submit', function(e) {
    const container = document.getElementById('approver_config_container');
    const actualCount = container.querySelectorAll('.approver-row').length;
    document.getElementById('levelInput').value = actualCount;
});
</script>
{% endblock %}